Industrial Hydraulics FAQs

Industrial Hydraulics FAQs

Updated: JS_September2013

FAQ Title: Replacement of DBET(E) series 5X with SO-1 (-1) Category: Proportional & Servo Valves Sub-Category: Proportional and Servo Valves

Bosch Rexroth Corporation Hydraulics 2315 City Line Road Bethlehem, PA 18017 Tel (847) 645-3600

Question: What is the recommended replacement for the DBET(E) proportional pressure relief valve, series 5X valves with -1 code suffix? Example: R900951964, DBET-5X/100YG24K4M-1

Answer: The SO-1, or suffix “-1” indicated a 25 deg. cone and external “Y” drain port located on the top of the DBET(E)-5X valve housing. There are other SO’s which contain similar features, suffix “-27”, for example. (“-27” was the above + additional bleed screw on the former design proportional coil) Series 5X valves with suffix “-1”, have a metal plug in the “Y” port. When replacing the former valve, please confirm if the “Y” port was being utilized. If not, the replacement may not need to consider suffix “-1”. For example: R901000845 DBET-6X/100G24K4V may be suitable if the “Y” port was NOT being used. Valves without the model code “Y” option, are often more standard with respect to availability. If the “Y” port was utilized in the application, then the replacement valve should specify the Y option too; eg: R901065549 DBET-6X/100YG24K4V There are other replacement options; for example, DBET-6X….24-8 (code “24-8” = 800ma coil; example, R901344474 DBET-6X/100YG24-8K4V), which does not require an amplifier change, series 5X 6X. Or, select a valve with on-board electronics, DBET(E)-6X…. Both DBET-6X, code “24-8” (can be used with series 5X amplifier), or the on-board electronic version DBET(E)-6X are possible with or without the “Y” option. If replacing a former series on-board electronic DBET(E)-5X product, the pressure/flow curve for the DBET(E)-6X is equivalent the DBET(E) 5X with suffix “-1”. Attachments: DBET(E) 5X vs 6X Comparison.pdf re29162_2013-06_Proportional Pressure Relief Valve DBET DBETE.pdf re29165_2002-11_DBET 5X.pdf ic039.en.pdf re30115_2013-02_VT_VSPA1_2_1X.pdf re30116_2010-09_Plug in Proportional Amplifier VT-SSPA1-1-1X w M12 con. re30223_2012-02_Analog Amplifier Modules VT MSPA1-1

Industrial Hydraulics FAQs

Updated: JS_September2013

Contact: Bosch Rexroth Corp. 2315 City Line Road Bethlehem, PA 18017 (610)694-8300

1

DBET(E) Differences between series 5X and 6X

• Coils: o Series 5X used rectangular DC proportional solenoids

Coil resistance 19.5 ohm / 800mA max current o Series 6X uses pole tube with removable coils

Coil resistance 5.5 ohm / 1600mA max current

• Control Electronics for DBET o Series 5X used VT-VSPA1-1-1X (RE30111) or VT-2000 (RE29904)

Cardholder VT-3002-2X/32D (RE29928) Modular amplifier VT-11030 (RE29741)

o Series 6X uses VT-VSPA1-2-1X (RE30115) Cardholder VT-3002-2X/48F (RE29928) Modular amplifier VT-MSPA1-1-1X (RE30223)

• Ramp function for DBETE:

o 5X – ramp up and ramp down individual adjustments o 6X – no internal ramp functions; if required, an external ramp module

will be needed

• Control Input for DBETE o Series 5X – Pots are used to set minimum and maximum currents

0-10 volt only option o Series 6X – Only maximum current is adjustable

A1 = 0-10 volt F1 = 4-20mA

• Pins F and C for DBETE:

o Series 5X C & F = no connection

o Series 6X C = reference F = actual solenoid current (0 to 1.6V) mV=mA

Contact: Bosch Rexroth Corp. 2315 City Line Road Bethlehem, PA 18017 (610)694-8300

2

• Other points

o Manual override not available on series 6X o SO-1 in series 5X is standard in series 6X (threaded Y port G1/4 thread) o Viton seals are standard on series 6X o External Drain option Y available on both series o Mounting bolts

5X – M5 x 30 6X – M5 x 45

• Size differences DBETE:

RE 29162, edition: 2013-06, Bosch Rexroth AG

Proportional pressure relief valve, directly oper-ated, without/with integrated electronics (OBE)

Features

Directly operated valves for limiting a system pressure Operation by means of proportional solenoid Proportional solenoid with central thread and detach-

able coil For subplate mounting:

Porting pattern according to ISO 4401 Integrated electronics (OBE) with type DBETE:

Little manufacturing tolerance of the command value pressure characteristic curve

External control electronics with type DBET: Amplifier with modular design, Euro-card format and as plug-in amplifier, individually adjustable upwards and downwards ramp, fine adjustment of the command value pressure characteristic curve is possible

Contents

Features 1Ordering code 2Symbols 3Function, section 4Technical data 5, 6Electrical connection 7, 8Integrated electronics (OBE) 8Characteristic curves 9 ... 11Dimensions 12 ... 14Accessories 14

Size 6 Component series 6X Maximum operating pressure 420 bar Maximum flow: 2 l/min

RE 29162 Edition: 2013-06Replaces: 04.13Type DBET and DBETE

Inhalt

Features 1Contents 1Ordering code 2Symbols 3Function, section 4Technical data (for applications outside these parameters, please consult us.) 5Technical data (for applications outside these parameters, please consult us.) 6Electrical connection (dimensions in mm) 7Electrical connection 8Integrated integrated (OBE) with type DBETE 8Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C) 9Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C) 10Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C) 11Dimensions: Type DBET (dimensions in mm) 12Dimensions: Type DBETE (dimensions in mm) 13Dimensions 14Accessories (not included in the scope of delivery) 14

Inhalt

Features 1Contents 1Ordering code 2Symbols 3Function, section 4Technical data (for applications outside these parameters, please consult us.) 5Technical data (for applications outside these parameters, please consult us.) 6Electrical connection (dimensions in mm) 7Electrical connection 8Integrated integrated (OBE) with type DBETE 8Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C) 9Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C) 10Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C) 11Dimensions: Type DBET (dimensions in mm) 12Dimensions: Type DBETE (dimensions in mm) 13Dimensions 14Accessories (not included in the scope of delivery) 14

2/14 DBET(E) | Proportional pressure relief valve, directly operated

Bosch Rexroth AG, RE 29162, edition: 2013-06

Ordering code

01 Proportional pressure relief valve DBET

02 For external control electronics no codeWith integrated electronics E

03 Component series 60 to 69 (60 to 69: Unchanged installation and connection dimensions) 6X

Maximum pressure rating04 Up to 50 bar 50

Up to 100 bar 100Up to 200 bar 200Up to 315 bar 315Up to 350 bar 350Up to 420 bar 420

05 Pilot oil return internal no codePilot oil return, external Y

Supply voltage of the integrated electronics (OBE) 06 24 V DC voltage G24

07 1600 mA coil no code800 mA coil (only possible for DBET-6X (external control electronics)) –8 1)

Electrical connection08 For type DBET:

Without mating connector; connector DIN EN 175301-803 K4 2)

For type DBETE:Without mating connector; connector DIN EN 175201-804 K31 2)

Electronics interface09 Command value 0 to 10 V A1

Command value 4 to 20 mA F1with DBET no code

Seal material10 NBR seals M

FKM seals VAttention: Observe compatibility of seals with hydraulic fluid used! (Other seals upon request)

11 Further details in the plain text

1) Replacement for series 5X (for comparison, see characteristic curve on page 9). All hydraulic characteristics specified in the data sheet refer to the version with a 1600 mA coil.

2) Mating connectors, separate order, see pages 7 and 14.

01 02 03 04 05 06 07 08 09 10 11

DBET ― 6X / G24 *

Proportional pressure relief valve, directly operated | DBET(E) 3/14


Symbols

For external control electronics (type DBET) With integrated electronics (type DBETE)

Pilot oil return internal Pilot oil return internal

Pilot oil return, external (Y) Pilot oil return, external (Y)



General informationType DBET proportional pressure relief valves are remote control valves with seat design and are used to limit a sys-tem pressure. Operation by means of a proportional sole-noid with central thread and detachable coil. The interior of the solenoid is connected to port T or Y and is filled with the hydraulic fluid. Depending on the electric com-mand value, these valves can be used to smoothly set the system pressure to be limited.The valves mainly consist of the housing (1), the propor-tional solenoid (2), the valve seat (3) and the valve pop-pet (4).

Basic principleFor the setting of the system pressure, a command value is specified at the control electronics. Depending on the command value, the electronics actuate the solenoid with electric current. The proportional solenoid converts the electric current into mechanical force that acts on the valve poppet (4) via the armature plunger (5). The valve poppet (4) presses on the valve seat (3) and interrupts the connection between port P and T or Y. If the hydraulic force on the valve poppet (4) equals the solenoid force, the valve controls the set pressure by lifting the valve poppet (4) off the valve seat (3) and thus enabling hydrau-lic fluid to flow from port P to T or Y. If the command value is zero, the control electronics only applies the minimum control current to the proportional solenoid (2) and the minimum set pressure is applied.

Function, section

Type DBETType DBET...Y

Type DBETE

Pilot oil return, external

Type DBETE – with integrated electronics (OBE)In terms of function and design, these valves correspond to type DBET. On the proportional solenoid, there is a housing (6) with the control electronics. Supply and command value voltage are applied at the connec-tor (7). At the factory, the command value pressure character-istic curve is adjusted with little manufacturing tolerance.

For more information on the control electronics, see page 8.



Technical data (for applications outside these parameters, please consult us.)

hydraulic

Maximum operating pressure – Port P bar 420Maximum set pressure – Pressure rating 50 bar bar 50

– Pressure rating 100 bar bar 100– Pressure rating 200 bar bar 200– Pressure rating 315 bar bar 315– Pressure rating 350 bar bar 350– Pressure rating 420 bar bar 420

Minimum set pressure (at command value 0 V or 4 mA) bar See characteristic curves on page 11Return flow pressure Port T and/or Y bar Separately at zero pressure to the tankMaximum flow l/min 2 1)

Hydraulic fluid 1) See table on page 6Hydraulic fluid temperature range °C –20 to +80Viscosity range mm2/s 20 to 380, preferably 30 to 46Maximum permitted degree of contamination of the hydrau-lic fluid, cleanliness class according to ISO 4406 (c)

Class 20/18/15 2)

Hysteresis % < 4 of the maximum set pressureRange of inversion % < 0.5 of the maximum set pressureResponse sensitivity % < 0.5 of the maximum set pressureLinearity (flow 0.8 l/min) % ±3 of the maximum set pressureManufacturing tolerance of the command value pressure char-acteristic curve, related to 0.8 l/min; pressure increasing

at command value 20 % % < ±1.5 of the maximum set pressure 3)

at command value 100 % % < ±5 of the maximum set pressure (type DBET) 4)

< ±1.5 of the maximum set pressure (type DBETE)

Step response (Tu + Tg) 0 → 100 % or 100 % → 0 line volume < 20 cm3; Q = 0.8 l/min

ms 80 (depending on the system)

generalWeight – Type DBET kg 2.0

– Type DBETE kg 2.15Mounting orientation AnyAmbient temperature range °C –20 to +70 (DBET)

–20 to +50 (DBETE)

1) Observe flow limitation for pressure ratings 315, 350 and 420 bar (page 10).

2) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and at the same time increases the life cycle of the components.

For the selection of the filters, see www.boschrexroth.com/filter.3) Zero point calibration at the factory.4) Possible comparison of the external control electronics.



Technical data (for applications outside these parameters, please consult us.)

Notice!Information on the environment simulation testing for the areas EMC (electromagnetic compatibility), climate and mechanical load, see data sheet 29162-U (declaration on environmen-tal compatibility).

Hydraulic fluid Classification Suitable sealing materials StandardsMineral oils HL, HLP NBR, FKM DIN 51524Bio-degradable – Insoluble in water HEES FKM VDMA 24568

Flame-resistant – Water-free HFDU FKM ISO 12922– Containing water HFC (Fuchs Hydrotherm 46M,

Petrofer Ultra Safe 620)NBR ISO 12922

Important information on hydraulic fluids! For more information and data on the use of other hydraulic fluids refer to data sheet 90220 or contact us!

There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance inter-vals, etc.)!

The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature.

Flame-resistant – containing water: – The maximum pressure differential per control edge is 210 bar. Otherwise, there is increased cavitation erosion.

– Life cycle as compared to operation with mineral oil HLP 30 to 100 %

– Maximum fluid temperature 60 °C Bio-degradable: When using bio-degradable hydraulic fluids that are zinc-solving, zinc may accumulate in the fluid (700 mg zinc per pole tube).

electric G24 G24-8Minimum solenoid current mA ≤ 100 ≤ 100Maximum solenoid current mA 1600 ± 10 % 800 ± 5 %Solenoid coil resis-tance

– Cold value at 20 °C Ω 5,5 20,6– Maximum hot value Ω 8,05 33

Switch-on duration % 100 100

electric, integrated electronics (OBE)Supply voltage – Nominal voltage VDC 24

– Lower limit value VDC 21– Upper limit value VDC 35

Current consumption A ≤ 1,5Required fuse protection A 2, slow-blowingInputs – Voltage V 0 to 10

– Current mA 4 to 20Output – Actual current value mV 1 mV ≙ 1 mAProtection class of the valve according to EN 60529 IP 65 with mating connector mounted and locked



Electrical connection (dimensions in mm)

Type DBET

Connection at the connector Connection at mating connector

Mating connector (black) accord-ing to DIN EN 175301-803, material no. R901017011 (separate order)

Sealing material NBR

Type DBETE

Connector pin assignment Contact Allocation interface "A1" Allocation interface "F1"

Supply voltageA 24 VDC (u(t) = 21 V to 35 V); Imax ≤ 1.5 AB 0 V

Reference potential actual value C Reference contact F; 0 V Reference contact F; 0 V

Differential amplifier inputD 0 to 10 V; RE = 100 kΩ 4 to 20 mA; RE = 100 ΩE Reference potential command value

Measuring output (actual value) F 0 to 1.6 V actual value (1 mV ≙ 1 mA)

Load resistance > 10 kΩProtective ground PE Connected to solenoid and valve housing

Plastic version, material no. R900021267 (separate order)

Metal version, material no. R900223890 (separate order)

Mating connectors according to DIN EN 175201-804, solder contacts for line cross-section 0.5 to 1.5 mm2



Electrical connection

Length in mm →

Min

. sup

ply

volta

ge in

V→

FunctionThe electronics are supplied with voltage via ports A and B. The command value is applied to the differential amplifier ports D and E. Via the characteristic curve generator, the command value solenoid current characteristic curve is adjusted to the valve so that non-linearities in the hydraulic system are compensated and thus, a linear command value pressure characteristic curve is created.The current controller controls the solenoid current inde-pendently of the solenoid coil resistance.

The power stage of the electronics for controlling the proportional solenoid is a chopper amplifier with a cycle frequency of approx. 180 Hz to 400 Hz. The output signal is pulse-width modulated (PWM).In order to check the solenoid current, a voltage can be measured at the connector between pin F(+) and pin C(–) that is proportional to the solenoid current. 1 mV corre-sponds to 1 mA solenoid current.

Connection cable for type DBETE– Recommendation 6-wire, 0.75 or 1 mm2 plus

protective grounding conductor and screening – Only connect the screening to PE on the supply side– Maximum admissible length = 100 mThe minimum supply voltage at the power supply unit depends on the length of the supply line (see diagram).

Integrated integrated (OBE) with type DBETE

Chopper amplifierCurrent

controllerCharacteristic

curve generatorDifferential amplifier

Solenoid

Oscillator

Command value

Reference potential actual value

Reference potential command value

Actual value

GND

24 VDC

Supply

Block diagram



Characteristic curves (measured with HLP46, ϑOil = 40 ±5 °C)

1)

Pres

sure

in p

ort

P in

% →

Pressure in port P depending on the command value (flow = 0.8 l/min)

Pres

sure

in p

ort

P in

% →

Command value in % →

At 20 % zero point calibration at the factory

Type DBET Type DBETE

1) With valve type DBET, the manufacturing tolerance at the external amplifier (type and data sheet, see page 14) can be changed using the command value attenuator potenti-ometer "Gw". The digital amplifier is set using the param-eter "Limit". In this context, the control current according to the techni-cal data must not be exceeded. In order that several valves can be adjusted to the same characteristic curve, do not set the pressure higher than the maximum set pressure of the pressure rating with command value 100 %.

Pressure in port P depending on the command value

Pres

sure

in p

ort

P in

bar

→


Comparison DBET series 5X-6X / pressure rating 200 bar (with amplifier VT-VSPA1-1-1X with 800 mA coil)

Series 5X

Series 6X


Cur

rent

in A

→

Ambient temperature in °C →

Note!At increased temperature, the solenoid current drops, which results in a corresponding deviation of the set pressure.

Current drop as ambient temperature rises, 24 V and 100 % duty cycle



Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pressure in port P depending on the flow


Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pressure rating 50 bar Pressure rating 100 bar

Applicable for all pressure ratings:Curve 1 at 0 % of the command valueCurve 2 at 25 % of the command valueCurve 3 at 50 % of the command valueCurve 4 at 75 % of the command valueCurve 5 at 100 % of the command value 1; 2) The characteristic curves were measured without counter pressure in port T. (pT = 0 bar)

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pressure rating 200 bar Pressure rating 315 bar 1)

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pressure rating 350 bar 2) Pressure rating 420 bar 2)

Maximum operating pressure



1) In the case of characteristic curve 5, the command value may not exceed the maximum flow of 1.4 l/min

2) In the case of characteristic curve 5, the command value may not exceed the maximum flow of 0.8 l/min



Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Minimum set pressure in port P with command value 0 V and/or 4 mA depending on the flow


Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pressure rating 50 bar

NoticeThe characteristic curves were measured without counter pressure in port T. (pT = 0 bar)Minimum control current ≤ 100 mA(This current is reached with a command value of 0 V and/or 4 mA.)

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →


Pres

sure

in p

ort

P in

bar

→

Flow in l/min →

Pres

sure

in p

ort

P in

bar

→

Flow in l/min →


Pressure rating 100 bar



Dimensions: Type DBET (dimensions in mm)

For valve mounting screws and subplates, see page 14.

Required surface quality of the valve contact surface

1 Proportional solenoid2 Valve housing3 Name plate4 Identical seal rings for ports P, T, A and B 5 Mating connector according to DIN EN 175301-8036 Space required for removing the mating connector7 Blind counterbores A and B8 With version ..Y.. (external pilot oil return)

port Y is internally connected to port T. Port T is not plugged.

9 Machined valve contact surface, porting pattern according to ISO 4401-03-02-0-05Deviating from the standard: "A" and "B" channels not drilled locating pin not included in the scope of delivery



Dimensions: Type DBETE (dimensions in mm)

For valve mounting screws and subplates, see page 14.

Required surface quality of the valve contact surface

1 Proportional solenoid2 Valve housing3 Integrated electronics (OBE)4 Identical seal rings for ports P, T, A and B 5 Mating connectors according to

DIN EN 175301-8046 Space required for removing the mating connector7 Cable fastening8 Blind counterbores A and B9 With version ..Y.. (external pilot oil return)

port Y is internally connected to port T. Port T is not plugged.

10 Name plate11 Block diagram of the integrated electronics (OBE)12 Machined valve contact surface,

porting pattern according to ISO 4401-03-02-0-05Deviating from the standard: "A" and "B" channels not drilled locating pin not included in the scope of delivery



Bosch Rexroth AG HydraulicsZum Eisengießer 197816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 [email protected] www.boschrexroth.de

© This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.

Dimensions

Accessories (not included in the scope of delivery)

Hexagon socket head cap screws Material number

Size 6 4x ISO 4762 - M5 x 45 - 10.9-flZn-240h-L Tightening torque MA = 7 Nm ± 10 %

R913000140

Notice: The tightening torque of the hexagon socket head cap screws refers to the maximum operating pressure!

External control for type DBET Data sheet Material number

VT-MSPA1-1-1X/V0/... in modular design (analog)VT-VSPD-1-2X/V0/.-0-1 in euro-card format (digital)VT-VSPA1-2-1X/V0/...in euro-card format (analog)VT-SSPA1-1-1X/V0/0-24 as a plug-in amplifier (analog) Limitations: No linearization of the command value pressure charac-teristic curve, higher hysteresis and range of inversion

30223305233011530265

Mating connectors (details see page 7) Data sheet Material number

For type DBET: Mating connectors according to DIN EN 175301-803For type DBETE: Mating connectors according to DIN EN 175201-804

0800608006

R901017011R900021267 (plastic)R900223890 (metal)

Subplates Data sheet Material number

G 341/01 (G1/4)G 341/60 (G3/8)

4505245052

R900424447R901027119

External control for type DBET ...G24-8... Data sheet Material number

VT-2000-5X/... in euro-card formatVT-MSPA1-1-30 with modular design

2990430224

Bosch Rexroth AG HydraulicsZum Eisengießer 197816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 [email protected] www.boschrexroth.de

© This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.





© 2002by Bosch Rexroth AG, Industrial Hydraulics, D-97813 Lohr am Main

All rights reserved. No part of this document may be reproduced or stored, processed, duplicated or circulated usingelectronic systems, in any form or by means, without the prior written authorisation of Bosch Rexroth AG. In the event ofcontravention of the above provisions, the contravening party is obliged to pay compensation.

This document was prepared with the greatest of care, and all statements have been examined for correctness. Thisdocument is subject to alterations for reason of the continuing further developments of products. No liability can beaccepted for any incorrect or incomplete statements.

DBET; DBETE 1/10 RE 29 165/11.02

Overview of contents

RE 29 165/11.02

Replaces: 12.98

Proportional pressure relief valveTypes DBET and DBETE

Nominal size 6

Series 5X

Maximum operating pressure 350 bar

Maximum flow 2 L/min

Features

H/A

/D60

79/9

8

Contents Page

Features 1

Ordering details 2

Preferred types 2

Symbols 2

Function, section 3

Technical data 4 and 5

Control electronics 5 and 6

Electrical connections, plug-in connectors 5

Characteristic curves 7 and 8

Unit dimensions 9

Type DBETE-5X/.G24K31… with integrated control electronics

– Direct operated valve for the limitation of a system pressure

– Operation via proportional solenoids

– For subplate mounting:Porting pattern to DIN 24 340, Form A6Subplates to catalogue sheet RE 45 052,(separate order, see page 9)

– External control electronics for type DBET:• Analogue amplifier types VT-VSPA1-1 and VT 2000 in

Eurocard format (separate order, see page 5)

• Digital amplifier type VT-VSPD-1 in Eurocard format(separate order, see page 5)

• Analogue amplifier type VT 11030 of modular design(separate order, see page 5)

– Integrated control electronics for type DBETE:• Low example spread for the command value-pressure-

characteristic curve• Independently adjustable up and down ramps

– Special protection types on request!For details regarding the sea water resistant version seecatalogue sheet RE 29 165-M

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RE 29 165/11.02 2/10 DBET; DBETE

T

P

T

P

Ordering details

Symbols

Preferred types

Type DBETE

Material No. Type

R900528808 DBETE-5X/50G24K31M

R900560201 DBETE-5X/100G24K31M

R900946670 DBETE-5X/200G24K31M

R900936987 DBETE-5X/315G24K31M

For external control electronics (type DBET)

Further details in clear text

M = NBR seals,suitable for mineral oil

(HL, HLP) to DIN 51 524V = FKM seals

Electrical connectionsFor DBET:

K4 = Without plug-in connector, withcomponent plug to DIN EN 175 301-803

Plug-in connector – separate order,see page 5

For DBETE:K31 = Without plug-in connector, with

component plug to E DIN 43 563-AM6-3Plug-in connector – separate order,

see page 5

G24 = Supply voltage for thecontrol electronics 24 V DC

Proportionalpressure relief valve

For external control electronics = No codeWith integrated control electronics = E

Series 50 to 59 = 5X(50 to 59: unchanged installation and connection dimensions)

Pressure stageUp to 50 bar = 50Up to 100 bar = 100Up to 200 bar = 200Up to 315 bar = 315Up to 350 bar = 350

Special protection types on request!

DBET – 5X G24 *

With integrated control electronics (type DBETE)

Further preferred types and standard units areto be found in the EPS (Standard Price List).

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DBTE; DBETE 3/10 RE 29 165/11.02RE 29 165/12.98

P

T

2 1 4 3 3.1

5

6

Function, section

Type DBET (for external control electronics)

The type DBET proportional pressure relief valves are remote controlvalves of poppet design and are used to limit a system pressure. Theyare operated by a proportional solenoid. With these valves, the systempressure to be limited can be infinitely set in relationship to theelectrical command value.

These valves consist of the housing (1), a proportional solenoid (2),the valve seat (3) and the valve poppet (4).

The proportional solenoid converts electrical current proportionallyinto a mechanical force. An increase in the current causes aproportionally higher solenoid force. The armature chamber of thesolenoid is filled with pressure fluid and is pressure tight.

The setting of the system pressure is carried out command valuedependent via the proportional solenoid (2). The solenoid forcepushes the valve poppet onto the seat (3). The pressure present inport P of the system acts on the valve poppet (4) and thus againstthe force of the proportional solenoid. If the hydraulic force on thevalve poppet (4) is equal to the solenoid force then the valve controlsthe set pressure by lifting the valve poppet off the valve seat (3),and thus permitting pressure fluid to flow from P to T. With minimumcontrol current, which relates to a zero command value, the minimumsettable pressure is set.

Type DBETE (with integrated control electronics)

The function and design of these valves is the same as the type DBET.The proprtional solenoids are fitted with an additional housing (5)which contains the control electronics. Supply and command valuevoltages are applied at the component plug (6).

The command value-pressure-characteristic curve (zero point at valveseat (3.1) and the increase at the Imax potentiometer (R30) in thecontrol electronics) are factory pre-set with a low example spread.

The ramp time for pressure increase and decrease may be setindpendently from each other at two potentiometers.

For further details regarding the integrated electronics see page 6.- In

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RE 29 165/11.02 4/10 DBET; DBETE

Technical data (for applications outside these parameters, please consult us!)

General

Installation Optional

Storage temperature range °C – 20 to + 80

Ambient temperature range DBET °C – 20 to + 70

DBETE °C – 20 to + 50

Weight DBET kg 2.0

DBETE kg 2.1

Hydraulic (measured with HLP 46; ϑoil = 40 °C ± 5 °C )

Max. operating pressure Port P bar 350

Max. settable pressure Pressure stage 50 bar bar 50

Pressure stage 100 bar bar 100




Min. settable pressure with a zero command value bar See characteristic curves on page 8

Return pressure Port T Separate and at zero pressure to tank

Max. flow L/min 2

Pressure fluid Mineral oil (HL, HLP) to DIN 51 524

Further pressure fluids on request!

Pressure fluid temperature range °C – 20 to + 80

Viscosity range mm2/s 15 to 380

Cleanliness class to ISO code Maximum permissible degree of contamination of the pressurefluid is to ISO 4406 (c) class 20/18/15 1)

Hysteresis (see command value-pressure-characteristic curve) ± 1.5 % of max. settable pressure

Repeatability < ± 2 % of max. settable pressure

Linearity ± 3.5 % of max. settable pressure

Example spread of the command value- DBET ± 2.5 % of max. settable pressurepressure-char. curve, referring to thehysteresis-char. curve, pressure increasing DBETE ± 1.5 % of max. settable pressure

Switching time ms 30 to 150 (system dependent)

1) The cleanliness class stated for the components must be adhered too in hydraulic systems. Effective filtration prevents faults fromoccurring and at the same time increases the component service life.For the selection of filters see catalogue sheets RE 50 070, RE 50 076 and RE 50 081.

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DBTE; DBETE 5/10 RE 29 165/11.02

PE

1 2

PE

1 230

27,5

30

36

5327,5

Ø22,5

Ø6

,5…

Ø1

1

AF

ED

C

BØ2

7

91


Electrical

Supply voltage 24 V DC

Min. control current DBET and DBETE mA 100

Max. control current DBET mA 800

DBETE mA 1600

Coil resistance Cold value at 20°C Ω 19.5 for DBET; 5.4 Ω for DBETE

Max. warm value Ω 28.8 for DBET; 7.8 Ω for DBETE

Duty % 100

Electrical connections DBET With component plug to DIN EN 175 301-803

1) Separate order, Plug-in connector to DIN EN 175 301-803 1)

see below DBETE With component plug to E DIN 43 563-AM6-3

Plug-in connector to E DIN 43 563-BF6-3/Pg11 1)

Valve protection to DIN 40 050 IP 65 with mounted and fixed plug-in connector

Control electronics– For DBETE Integrated into the valve, see page 6

– For DBET• Amplifier in Eurocard format Analogue VT-VSPA1-1 to catalogue sheet RE 30 111

(separate order) VT 2000 to catalogue sheet RE 29 904

Digital VT-VSPD-1 to catalogue sheet RE 30 123

• Amplifier of modular design (separate order) Analogue VT 11030 to catalogue sheet RE 29 741

Electrical connections, plug-in connectors

For type DBET (for external control electronics)

For type DBETE (with integrated control electronics)

For pin allocation see block circuit diagram on page 6

Plug-in connector to E DIN 43 563-BF6-3/Pg11Separate order under Material No. R900021267(plastic version)

Plug-in connector to DIN EN 175 301-803Separate order under Material No. R900074684

Connections at plug-in connector

To amplifier

Connections at component plug

Note: For details regarding the environmental simulation test covering EMC (electro-magnetic compatibility), climate andmechanical loading see RE 29 165-U (declaration regarding environmental compatibility).

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RE 29 165/11.02 6/10 DBET; DBETERE 29 165/07.97

R 30 R 43

ImaxR 13+

–

0 V

+U

+7,5 V

-7,5 V

+

R 14

+U

=

=

I

D

E

F

C

B

A

n.c.

IminU

U

300 Hz

=

MP1

MP2

n.c.

1,6 A =

0,352 V

22

24

26

28

30

20 40 60 80 100

0,75 mm2

1 mm2

Integrated control electronics for type DBETE

Supply voltage

Power supply with rectification

Single phase rectification or three phase bridge: Ueff = 22 to 33 V

Residual ripple at power supply: < 5 %

Output current: Ieff = max. 1.4 A

Supply cable: – Recommended 5 core 0.75 or 1 mm2 withprotective conductor and screen

– Outside diameter 6.5 to 11 mm

– Screen at 0 V power supply

– Max. permissible length 100 m

The minimum power supply voltage at the power supply is dependenton the length of the supply cable (see diagram).

For lengths > 50 m a capacitor with a value of 2200 µF must befitted in the supply cable near to the valve.

0V ref. potential

Block circuit diagram / pin allocation of the integrated control electronics

The control of the integrated electronics is at the two differentialamplifier ports D and E.

The ramp generator produces from a command value jump (0 to 10 Vor 10 to 0 V) a delayed increase or decrease in the solenoid current. Atpotentiometer R14 the rate of increase in time and at potentiometerR13 the rate of decrease in time of the solenoid current can be set.

Only over the full command value range is the maximum ramp timeof 5 s possible. With smaller command value changes the ramp timeis accordinlgy shortened.

Via the characteristic curve generator, the command value-solenoidcurrent characteristic curve is so matched to the valve, that non-linearities in the hydraulics are compensated for, so that a linearcommand value-pressure-characteristic curve is obtained.

The current controller controls the solenoid current independentlyfrom the solenoid coil resistance.

At potentiometer R30, the increase rate of the command value-current-characteristic curve, and thereby also the increase rate of thecommand value-pressure-characteristic curve of the proportionalpressure valve can be changed.

The potentiometer R43 is used to adjust the biasing current. Thisadjustment should not be changed. If required, the zero point of thecommand value-pressure-characteristic curve is adjustable at the valveseat.

The power stage of the electronics for the control of the proportionalsolenoid forms a chopper amplifier. It is pulse width modulated witha pulse frequency of 300 Hz.

The solenoid current may be measured at the two measurementsockets MP1 and MP2. A voltage drop of 0.352 V at the measurementresistor relates to a solenoid current of 1.6 A.

Function

Com. value 0 to 10 V

Supply voltage:

Ueff: 22 to 33 V

Chopperamplifier

Ramp"up"

Ramp"down"

Internal ref. point

Measuringresistance

R = 0,22 Ω

Oscillator

Solenoid

Power supply

Rampgenerator

Differentialamplifier

Char. curvegenerator

Currentcontroller

0 V

Length of supply cable in m →

Min

. sup

ply

volta

ge in

V→

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DBTE; DBETE 7/10 RE 29 165/11.02

0 20 40 60 80 100

20

40

60

80

100

0 20 40 60 80 100

20

40

60

80

100

0 0,4 0,8 1,2 1,6 2,0

10

20

30

40

50

60

0 0,4 0,8 1,2 1,6 2,0

20

40

60

80

100

120

0 0,4 0,8 1,2 1,6 2,0

40

80

120

160

200

240

280

0 0,4 0,8 1,2 1,6 2,0

40

80

120

160

200

240

280

320350

0 0,4 0,8 1,2 1,6 2,0

50

100

150

200

250

300

350

400

Characteristic curves (measured with HLP 46; ϑoil = 40 °C ± 5 °C )

Pressure in port P in relation to the command value (qV = 0.8 L/min)

Pressure stage 50 bar

Flow in L/min →





The characteristic curves were measuredwithout back pressue in port T.

Pres

sure

in p

ort

P in

bar→

Pres

sure

in p

ort

P in

%→

Pres

sure

in p

ort

P in

%→

Command value in % → Command value in % →

DBETEDBET

Pressure in port P in relation to the flow

Flow in L/min →

Pres

sure

in p

ort

P in

bar→

Flow in L/min →

Pres

sure

in p

ort

P in

bar→

Flow in L/min →

Pres

sure

in p

ort

P in

bar→

Flow in L/min →

Pres

sure

in p

ort

P in

bar→

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RE 29 165/11.02 8/10 DBET; DBETE

0 0,4 0,8 1,2 1,6 2,0

0,5

1,0

1,5

2,0

2,5

0 0,4 0,8 1,2 1,6 2,0

0,5

1,0

1,5

2,0

2,5

0 0,4 0,8 1,2 1,6 2,0

0,5

1,0

1,5

2,0

2,5

0 0,4 0,8 1,2 1,6 2,0

1

2

3

4

5

0 0,4 0,8 1,2 1,6 2,0

1

2

3

4

5

Characteristic curves (measured with HLP 46; ϑoil = 40 °C ± 5 °C )

Min. settable pressure in port P with a zero command value

Flow in L/min →

Min

. set

tabl

e pr

essu

re in

bar→






Flow in L/min →

Min

. set

tabl

e pr

essu

re in

bar→

Flow in L/min →

Min

. set

tabl

e pr

essu

re in

bar→

Flow in L/min →

Min

. set

tabl

e pr

essu

re in

bar→

Flow in L/min →

Min

. set

tabl

e pr

essu

re in

bar→

The characteristic curves were measuredwithout back pressure in port T.

Note: So that the minimum settable pressure can be achieved the bias current must not exceed 100 mA.

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DBTE; DBETE 9/10 RE 29 165/11.02

0,01/100mm

R 4max

6 5

21 4

7

75

22

49

86

15

Ø19

,5

9

T

P

78

3147

38

16,5

18,5

Ø 5,5

Ø 10

177,5

245,5

40,5±0,1

0,7

5

45

1,5

31±

0,1

31,7

5±

0,1

T

P

8

20 40,5

0,7

531,7

5

Unit dimensions (dimensions in mm)

Required surface finish of themating piece

1 Proportional solenoid

2 Valve housing

3 Name plate

4 Identical seal rings for ports P, T andblind counterbore (Pos.8)

5 Space required to remove the plug-in connector

6 Plug-in connector for type DBET(separate order, see page 5)

7 Integrated control electronics with component plugand plug-in connector for type DBETE(separate order, see page 5)

8 Blind counterbore

9 Porting pattern to DIN 24 340; Form A6

Subplates to catalogue sheet RE 45 052 and valve fixing screwsmust be ordered separately.Subplates: G 341/01 (G 1/4)

G 342/01 (G 3/8)G 502/01 (G 1/2)

Valve fixing screws: M5 x 30 DIN 912-10.9; MA = 8.9 Nm

(with integrated control electronics)

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RE 29 165/12.98 10/10 DBET; DBETE

Bosch Rexroth AGIndustrial Hydraulics

D-97813 Lohr am MainZum Eisengießer 1 • D-97816 Lohr am MainTelefon 0 93 52 / 18-0Telefax 0 93 52 / 18-23 58 • Telex 6 89 418-0eMail [email protected] www.boschrexroth.de

The data specified above only serves to describethe product. No statements concerning a certaincondition or suitability for a certain applicationcan be derived from our information. It must beremembered that our products are subject to anatural process of wear and ageing.

Bosch Rexroth Limited

Cromwell Road, St Neots,Cambs, PE19 2ESTel: 0 14 80/22 32 56Fax: 0 14 80/21 90 52E-mail: [email protected]

RD 29 165/12.98

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1 Bosch Rexroth AG Industrial Hydraulics 293 May_June 2004

Valves and Electronics« Valves » « Electronic Components, Systems and Accessories »

IC

Proportional pressure relief valve type DBET(E)– series changed from 5X to 6X

From June 1, 2004 on, proportional pressure relief valve type DBET(E)-6X will be avail-able as series product and will replace series 5X. The associated data sheet is currently being revised.

This change of series results in the following technical changes:

Features:

– Series 6X – proportional solenoid with detachable coil

– Series 6X – better damping characteristics

– Series 6X – longer service life thanks to better magnet armature support

– Series 6X – bleeding of the solenoid is no longer required before commissioning

– Series 6X – when compared with series 5X, integrated electronics without ramp func-tions. These functions can be provided with the help of an external ramp module or a corresponding command value feedforward.

– When DBET-5X is to be substituted with DBET-6X, the valve must be replaced together with the associated amplifier.

Technical data – electrical:

– Solenoid current (control current) DBET-5X: Imax 800mA

DBET-6X: Imax 1600mA

Consequently, external amplifiers for DBET-5X and DBET-6X are not interchangeable.

– Control electronics:

DBETE-5X Integrated in the valve

For DBET-5X

• Amplifier in Euro-card format (separate order)

Analogue: VT-VSPA1-1 to RE 30111

VT 2000 to RE 29904

Digital: VT-VSPD-1 to RE 30123

• Amplifier of modular design (separate order) Analogue: VT 11030 to RE 29741

DBETE-6X Integrated in the valve 1)

For DBET-6X

• Amplifier in Euro-card format

Analogue: VT-VSPA1-2-1X 1)

VT-VSPA1K-2-1X 1)

(separate order) to RE 30115

• Amplifier of modular design Analogue: VT-MSPA1-1-1X 2)

(separate order) to RE 30223 1) Command value 0-10 V or 4-20 mA possible 2) Command value 0-10 V possible

– Electrical connection, plug-in connectors:

With the DBETE-5X/6X the electrical connection, the pin assignment and the plug-in connector are identical. With series 6X, pins “C” and “F” are used as actual value output.

Norberto Thiesing BRI-IC/PMT1 Tel. +49 (0) 93 52 18 28 73 eMail: [email protected] 97816 Lohr am Main Germany

039

krgasker

Text Box

Series 6X

Series 5X

Series 6XSeries 5X

2 Bosch Rexroth AG Industrial Hydraulics 293 May_June 2004

Valves and Electronics« Valves » « Electronic Components, Systems and Accessories »

IC

Characteristic curves:

– Command value/pressure characteristic curve:For DBETE-5X and 6X identical at 0.8 L/min.DBET-5X not linearised.DBET-6X linearised. This results in the fact that when the series is changed from 5X to 6X a command value adjustment is required to achieve identical pressures.

– Pressure/flow characteristicsTo improve the damping characteristics, series 6X generally features higher damping.DBET(E)-5X/... cone with a 40° cone angleDBET(E)-5X/...SO1 cone with a 25° cone angleThe pressure/flow relationship of the DBET-6X features a somewhat steeper gradient than that of the DBET-5X.The pressure/flow relationship of the DBET(E)-6X is identical with that of DBET(E)-5X/...-SO1.

DBETE-6X with integrated amplifier:

– For the DBETE-6X the command value/pressure characteristic curve is matched in the factory. The manufacturing toler-ance is ±1.5 %.

DBET with external amplifier:

– The command value/pressure characteristic curve is matched in the factory.Command value 20 % – ±1.5 % of the max. pressure settingCommand value 100 % – ±5 % of the max. pressure setting

– The matching potentiometer “GW“ on the external amplifiers is accessible externally. The customer can use this potenti-ometer to match the command value/pressure characteristic curve at a 100% command value.

Porting pattern / valve fixing screws

– The porting pattern of series 5X and 6X is identical .

– Valve fixing screws Series 5X: M5 x 30

Series 6X: M5 x 45For the changes of size, see drawing.

Norberto Thiesing BRI-IC/PMT1 Tel. +49 (0) 93 52 18 28 73 eMail: [email protected] 97816 Lohr am Main Germany

039

krgasker

Text Box


Valve amplifier for proportional pressure valves

Features

Diff erential input (0 ... +10 V) Current input (4 ... 20 mA) Ramp generator with separately adjustable ramp times

"up/down" External ramp time presetting Enable input Clocked power output stage "Ready for operation" message Reverse polarity protection of the supply voltage Short-circuit protection and cable break detection of the

solenoid conductor

Contents

Features 1Ordering code 2Function 2Block diagram 4Setting and operating controls 5Technical data 6Unit dimensions 7Project planning information/maintenance instructions/additional information 7

Component series 1X Analog, Euro-card format Suitable for controlling proportional pressure valves:

– DBET-6X, – DBEM...-7X

RE 30115 Edition: 2013-02Replaces: 02.06Type VT-VSPA1-2

tb0185_d

2/8 VT-VSPA1-2 | Valve amplifier


Ordering code

01 Valve amplifi er for proportional pressure valves, analog, Euro-card format VT-VSPA1

02 For controlling direct operated proportional pressure valves DBET-6X and DBEM...-7X 2

03 Component series 10 to 19 (10 to 19: Unchanged technical data and pin assignment) 1X

04 Version: Standard V0

05 Option: Standard 0Option: 4 command value call-ups A4

06 Further details in the plain text (additional functions on request) *

01 02 03 04 05 06

VT-VSPA1 – 2 – 1X / V0 / / *

Function

Power supply unit (1)The amplifier has a power supply unit with making current limiter. This unit supplies all internally required positive and negative supply voltages.

Command value specifi cation (2), (3), (4) 1), (5), (6)The internal command value signal is calculated from the total (6) of the external command value signal or the called-up signal (4) 1) available at the differential input (2) or at the current input (3) and the zero point offset (5) (zero point potentiometer "Zw").The following applies:Standard values Current

inputDiff erential input

Command value socket

0 % 4 mA 0 V 0 V

+100 % 20 mA +10 V +10 V

There is no switch-over between current and voltage input. The inputs are permanently available (see block diagram).

Command value call-ups (4) 1)

Four command value call-ups "w1" to "w4" can be called up. The external voltages (command values 1 to 4) are either defined directly by the voltage output +10 V or by external potentiometers. If these command value inputs are directly connected to the regulated voltage, the command values are set at the potentiometers "w1" to "w4". When using external potentiometers, the internal potentiometers will function as attenuators or limiters.

Only one call-up can be operated at the same time. If sev-eral call-ups are operated simultaneously, call-up "w1" has the lowest priority and call-up "w4" has the highest priority.The active call-up is indicated by a yellow LED.

Enable function (7)The enable function (7) enables the power output stage and forwards the internal command value signal to the ramp generator (8). The enable signal is indicated by an LED. If the release is connected (via 24 V input or jumper J1), the internal command value is changed (with any kind of command value specification) by the set ramp time. Thus, a controlled valve does not open abruptly.

Ramp generator (8)The ramp generator (8) limits the rise of the control output. The downstream amplitude limiter (12) does not extend or shorten the ramp time. Using the jumper J3, the ramp time is changed by the factor 10.

The following applies:

J3 Usocket /V 2 1 0.2 0.1 0.02

Open* t/ms 50 100 500 1000 5000

Closed t/s 0.5 1 5 10 50

* Basic setting (condition as supplied)

Open card holder VT 3002-1-2X/48F (see data sheet 29928)

Accessories

1) Only with option A4

Valve amplifier | VT-VSPA1-2 3/8


Formula:

t =100 ms

Usocket / V

Ramp on/off (9)Using jumper J2 or the "Ramp on/off" input (9) (see terminal assignment), the ramp time is set to a minimum (< 50 ms). An activated ramp is indicated by an LED.

"Ramp on/off " input J2 LED "T" Ramp

0 V Open On On

+24 V Open Off Off

0 V Closed Off Off

+24 V Closed On On

Ramp time setting external (10)Using an external potentiometer or an external voltage presetting (according to the formula in section "Ramp generator"), the internally set ramp time can be extended. The setting can be verified at the measuring sockets. In case of a cable break, the internal default setting will be valid automatically.

The following applies to the external potentiometer:Setting range*

R Min. ramp time(potentiometer at left turn)

Max. ramp time (rotary angle of potentiome-ter at approx. 95 %)

1 kΩ 100 ms 1 s

100 Ω 1 s 10 s

* The minimum ramp time can only be reached if the internally set ramp time is lower, i.e. the corresponding potentiometer is at the left turn. The specified ramp times are true for J3 = open.

Characteristic curve generator (11)The maximum current for the solenoid is set using the "Gw" (12) potentiometer. In the characteristic curve gen-erator (11), the command value signal is changed so that a linear command value pressure characteristic curve (cor-rection characteristic curve for DBET-6X and DBEM...-7X) results. For this purpose, jumper J4 has to be closed and jumper J5 has to be opened.In order to deactivate the correction characteristic curve, jumper J4 has to be opened and jumper 5 has to be closed.

Amplitude limiter (12)The internal command value is limited to approx. +120 % of the nominal range.

Command value output (13)0 % ≙ 0 V +100 % ≙ +10 V

Clock generator (14)In the clock generator (14), a frequency for the output stage is generated. The frequency is influenced by the supply voltage.

A frequency dependent on the command value signal is generated using the jumper J6 (for DBET-6X and DBEM...-7X). For a universal use, jumper J6 is to be opened.A frequency adjustment via the "frequency" potentiometer can be realized by means of jumper J7.Example 1:(frequency adjustment via "frequency" potentiometer – without command value dependency; J6 = open, J7 = closed)Setting range: 210 Hz ... 310 Hz ± 15 %

Example 2:(command-value dependent frequency – J6 closed)

450

050

100150200250300350400

0 20 40 60 80 100

18 V24 V28 V34 VUB

Freq

uenc

y in

Hz

*

Command value in %* Tolerance: ±15 %

Via the "frequency" potentiometer, the frequency can be corrected by > ±10 % (J6 and J7 closed).

Power output stage (15)The power output stage creates a clocked solenoid current for the proportional valve. The output stage output is de-energized in case of an inter-nal fault signal or if the release is missing. The output stage output is short-circuit-proof.

Actual value output (16)1 mA (Isolenoid) ≙ 1 mV (actual value output)

Fault recognition (17)The solenoid conductor is monitored for cable break and short-circuits. If there is no fault, a voltage > 16 V is output at the "ready-for-operation" output and the "ready-for-operation" LED is illuminated. In case of a fault, the voltage is < 1 V and the LED flashes.

z2d30 z4 d32

d20

d22

b32

d26

b28

z20

z10

UU

UU

IU

100k

100k

100k

100k

100>50k

>50k

10k

-1

max

t

~ &

U

IPW

M

f (y,

z)

DC

DC

b12

d24

d28

b14

b16

b22

b24

b8 b6 b4 b2 d8 d6 d4 d2 d18

z30

z32

w1w2

w3w4

w1w2

w3w4

Zw

T

t<t>

t<t>

J35

50

Gw

t

ok

ok

J6f (z)

f (z, y)

UL

W

11

10

9

1

2

3

4

1215

14

13

5

6

78

16

8

8

17

J2

+15V

J3

J1 L0

+ 7,5

V+ 1

0 VM0 – 7

,5 V

J8

J5

J4

J6

J7

I

UL

UL

ok

“z”

“y”

+ – + – + –



Block diagramIn

tern

al c

omm

and

valu

e Sole

noid

Actu

al v

alue

Rese

rved

Rese

rved

Read

y fo

r op

erat

ion

+10

V/25

mA

Refe

renc

e ex

tern

al

Syst

em e

arth

"fre

quen

cy"

PWM

freq

uenc

y

Enab

le

Erro

r de

tect

ion

Rese

rve

jum

per

t ra

mp

max

/sec

up/d

own

Ram

p tim

e se

lec-

tion

logi

cs

Com

man

d va

lue

sele

c-tio

n lo

gics

Ram

p on

/off

Ram

p tim

e ex

tern

al

Com

man

d va

lue

5:

0...+

10 V

Com

man

d va

lue

6:

4...2

0 m

A

Com

man

d va

lue

call-

up 4

1)

Com

man

d va

lue

call-

up 3

1)

Com

man

d va

lue

call-

up 2

1)

Com

man

d va

lue

call-

up 1

1)

Enab

le

24 V 0 V

1) O

nly

with

opt

ion

A4

1Po

wer

sup

ply

unit

7En

able

13C

omm

and

valu

e ou

tput

2D

iff er

entia

l inp

ut8

Ram

p ge

nera

tor

14C

lock

gen

erat

or

3C

urre

nt in

put

9Ra

mp

on/o

ff 15

Pow

er o

utpu

t st

age

4C

omm

and

valu

e ca

ll-up

s10

Ram

p tim

e ex

tern

al16

Actu

al v

alue

out

put

5Ze

ro p

oint

set

ting

11C

hara

cter

istic

cur

ve g

ener

ator

17Fa

ult

reco

gniti

on

6C

omm

and

valu

e su

mm

atio

n12

Ampl

itude

lim

iter

Com

man

d va

lue

4 1)

C

omm

and

valu

e 3

1)

Com

man

d va

lue

2 1)

C

omm

and

valu

e 1

1)

J3 J5 J2

J7 J6J4

J8 J1VSPA1-2

t>

t<

w4

w3

w2

w1

Gw

Zw

t< t>wI

f

Rexroth



Setting and operating controls

Ready for operationEnable

Ramp activated

Zero point calibration "Zw"Amplitude attenuator "Gw"Command value 1 "w1" 1)

Command value 2 "w2" 1)



Ramp up "t <"Ramp down "t >"

Measuring sockets

"frequency" potentiometer

Nam

e pl

ate

Fuse 2 A medium time-lag

Measuring socketst < Ramp time "Ramp up"t > Ramp time "Ramp down"w Command value output (0...10 V)I Actual value (1 mV ≙ 1 mA )f Clock frequency of the output stage⊥ Reference for outputs

Additional potentiometer"frequency" Frequency setting (to be activated using J7)

LED Ready-for-operation LED

Enable LED ("enable")

T "Ramp on active" LEDw1-w4 "Command value call-up" LEDs (only with

A4 variant)

JumpersJ1 Open

Closed• No enabled

Enable activatedJ2 Ramp function on/off (• = open)

(see table under "Ramp on/off " on page 3)J3 Open

Closed• Ramp time 20 ms ... 5 s

Ramp time 200 ms ... 50 sJ4 Open

Closed •Command value pressure characteristic curve correction inactiveCommand value pressure characteristic curve correction active J4 and J5 must not be

simultaneously closed.J5 OpenClosed

• Command value pressure characteristic curve correction activeCommand value pressure characteristic curve correction inactive

J6 OpenClosed •

Command value-dependent frequency deactivatedCommand value-dependent frequency activated (for DBET-6X and DBEM...-7X)

J7 OpenClosed

• Frequency adjustment via "frequency" potentiometer deactivatedFrequency adjustment via "frequency" potentiometer activated

J8 Closed • Reserve jumper

• = Jumper condition as supplied

1) Only with option A4




Operating voltage UB 24 VDC + 40 % – 20 %

Operating range

Upper limit value uB(t)max 35 V

Lower limit value uB(t)min 18 V

Power consumption PS < 24 VA

Current consumption I < 2 A

Fuse IS 2 A medium time-lag, exchangeable

Inputs, analog

Command values 1 to 4 (potentiometer inputs) * Ue 0 ... +10 V, Re > 100 kΩDifferential input Ue 0 ... +10 V, Re > 50 kΩCurrent input Ie 4 ... 20 mA, load RB = 100 ΩRamp time external Ue 0 ... +5 V, Re > 10 kΩ

Inputs, digital

Command value call-ups (only with option A4) U 8.5 V ... UB –> call-up operated, Re > 100 kΩU 0 ... 6.5 V –> no call-up, Re > 100 kΩ

Ramp on/off U 8.5 V ... UB –> ramp on, Re > 100 kΩU 0 V ... 6.5 V –> ramp off, Re > 100 kΩ

Release U 8.5 V ... UB –> ON, Re > 100 kΩU 0 ... 6.5 V –> OFF, Re > 100 kΩ

Clock frequency f 250 Hz ± 10 % (J6 and J7 = open)

Setting ranges

Zero adjustment (potentiometer "Zw") +30 %

Command values (potentiometers "w1" to "w4") 0 ... 100 %

Ramp times (potentiometer "t <" and "t >") t 20 ms ... 5 s, switchable to 0.2 s ... 50 s

Amplitude attenuator (potentiometer "Gw") 0 ... +120 %

Frequency adjustment with "frequency" potentiometer (J7 operated) f See explanation: Clock generator, page 3

Outputs

Command value signal U 0 ... +10 V ± 2 %, Imax = 2 mA

Actual value signal U 0 ... +10 V ± 2 %, Imax = 2 mA

Ready for operation U > 16 V, Imax = 50 mA

(in case of faults: U < 1 V, Ri = 10 kΩRegulated voltage U +10 V ± 2 %, Imax = 25 mA, short-circuit-proof

Ramp signals measuring socket U +100 mV ... +5 V ± 10 %,

+10 mV ... +100 mV ± 50 %

Power output stage I 0 ... 1.9 A, short-circuit-proof, clocked

Type of connection 48-pin male multipoint connector, DIN 41612, design F

Card dimensions Euro-card 100 x 160 mm, DIN 41494

Operating temperature range ϑ 0 ... 50 °C

Storage temperature range ϑ –25 ...+85 °C

Weight m 0.15 kg (net)




VSPA1-2

t>

t<

w4

w3

w2

w1

Gw

Zw

t< t>wf

4TE(20,3)

3HE

(128

,4)

165182

72

Ø8

100

89

Rexroth

Project planning information/maintenance instructions/additional information

In the condition as supplied the parameters are set as follows: Correction characteristic curve and command value-dependent frequency = active (for valves DBET-6X and DBEM...-7X), max. ramp time = 5 s, pilot current = 100 mA, max. output current = 1.6 A.

The amplifi er card may only be assembled when de-energized. No connectors with free-wheeling diodes or LED displays must be used for the solenoid connection. Only carry out measurements at the card using instruments Ri > 100 kΩ. For switching command values, relays with gold-plated contacts have to be used (small voltages, low currents). Always shield command value lines, connect shielding to earth on the card-side, other side open. If no system earth

exists, connect 0 V operating voltage.Recommendation:Shield solenoid conductors as well. For solenoid conductors up to 50 m in length, use the line type LiYCY 1.5 mm2. With greater lengths, please contact us.

The distance to aerial lines, radios, and radar systems has to be 1 m at least. Do not lay solenoid conductors and signal lines near power lines. If the diff erential input is used, both inputs must always be connected or disconnected at the same time.

Bosch Rexroth AGHydraulicsZum Eisengießer 197816 Lohr am Main, GermanyPhone +49 (0) 93 52 / [email protected]

© This document, as well as the data, specifi cations and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be repro-duced or given to third parties without its consentThe data specifi ed above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verifi cation. It must be remembered that our products are subject to a natural process of wear and aging.



Notes

1/8Plug-in proportional amplifier

Type VT-SSPA1-1, VT-SSPA1-5, VT-SSPA1-50, VT-SSPA1-100, VT-SSPA1-150

Component series 1X

RE 30116/09.10Replaces: 06.10

Table of contentsContent PageFeatures 1Ordering code 2Possible applications 3Block circuit diagram 4Characteristic curve 4Function 4Technical data 5Electrical connection 6Control elements / dimensions 7Engineering / maintenance notes / supplementary information 8

Features– Used for controlling solenoid operated pressure control and

directional valves without closed-loop position control– Proportional command value / current characteristic curves

for command values from 0 % to 100 %– Regulated, adjustable maximum current for a command

value greater than approx. 120 % (only with differential input)– Differential input, optional current input– Ramp generator, separate for up/down – Zero potentiometer / biasing current– Command value attenuator / maximum current– Dither frequency potentiometer– Operating voltage 24 V

HAD 7072HAD 7645

with M12 component connector with cable gland

2/8 Bosch Rexroth AG Hydraulics VT-SSPA1-1(5, 50 ,100, 150) RE 30116/09.10

Ordering code

for DBET / DRE = 1for KBPS...8 = 5Universal, 2.5 A = 50for KKDSR = 100Universal, 0.8 A = 150

No code = With cable glandK24 = With M12 component connector

24 = 24 V operating voltage0 = Voltage input

VT SSPA1 1X V0 0 24

Overview of types

Accessories for type .../K24

Type Mat. no. UB Inom f at Inom Command value For valve SolenoidVT-SSPA1-1-1X/V0/0-24 R900779643 24 V 1,6 A 340 Hz 0...10 V/24 V DBET / DRE 5,5 Ω 1,6 AVT-SSPA1-1-1X/V0/0-24/K24 R901238534 24 V 1,6 A 340 Hz 0...10 V/24 V DBET / DRE 5,5 Ω 1,6 AVT-SSPA1-5-1X/V0/0-24 R901024331 24 V 1,2 A 200 Hz 0...10 V/24 V KBPS...8 4,77 Ω 1,2 A VT-SSPA1-5-1X/V0/0-24/K24 R901238530 24 V 1,2 A 200 Hz 0...10 V/24 V KBPS...8 4,77 Ω 1,2 A VT-SSPA1-50-1X/V0/0-24 R901005414 24 V 2,5 A 305 Hz 0...10 V/24 V universal > 2 Ω 2,5 AVT-SSPA1-50-1X/V0/0-24/K24 R901238532 24 V 2,5 A 305 Hz 0...10 V/24 V universal > 2 Ω 2,5 AVT-SSPA1-100-1X/V0/0-24 R901030116 24 V 1,2 A 150 Hz 0...10 V/24 V KKDSR1 7,2 Ω 1,2 AVT-SSPA1-100-1X/V0/0-24/K24 R901238528 24 V 1,2 A 150 Hz 0...10 V/24 V KKDSR1 7,2 Ω 1,2 AVT-SSPA1-150-1X/V0/0-24 R901104644 24 V 0,8 A 150 Hz 1) 0...10 V universal 19,5 Ω 0,8 AVT-SSPA1-150-1X/V0/0-24/K24 R901263782 24 V 0,8 A 150 Hz 1) 0...10 V universal 19,5 Ω 0,8 A

1) With a solenoid resistance of R = 19.5 Ω and a solenoid current of I = 100 mA

Description Designation Mat. no.Ready-to-connect cable with straight mating connector KABELSATZ VT-SSPA1-1X/M12/1/V00 R901241656

20

Ø15

44,55000 ±75

Cable sheat: PVC, blackCable diameter: 6.4 mmWire cross-section: 4 x 0.75 mm2

Cable and mating connector are shieldedElectrical connection, see page 6

Ready-to-connect cable with angled mating connector KABELSATZ VT-SSPA1-1X/M12/2/V00 R901241651

5000 ±75

20

Ø1539

32Cable sheat: PVC, blackCable diameter: 6.4 mmWire cross-section: 4 x 0.75 mm2

Cable and mating connector are shieldedElectrical connection, see page 6

UI

UU

DCDC

Z

Gt< t>

f

1

210uF

IN+

IN–

UB = 24 V

0 V

PE

+UB

0V

UI

UU

DCDC

Z

G

f

1

210uF

UB = 24 V

0 V

PE

US = 24 V IN+

IN–

+UB

0V

t< t>

UI

UU

DCDC

Z

G

f

1

210uF

24 V

PE

0...10 V / 24 VU

U

t< t>

IN+

IN–

+UB

0V

Hydraulics Bosch Rexroth AGRE 30116/09.10 VT-SSPA1-1(5, 50 ,100, 150) 3/8

Possible applications

2-conductor technology (only with differential input)– Switching applications with constant-current regulation– Ramp function when switched onThe “IN+“ input is to be bridged with the supply voltage (+UB) in the plug-in connector, the “IN–“ input is to be bridged with the supply voltage (0 V) in the plug-in connector. The maximum current must usually be matched according to the solenoid data using potentiometer “G“. The ram p time “ramp up“ (t <) can be adjusted within the range of tmin ms to 5 s.

3-conductor technology (only with differential input)– Switching applications with constant-current regulation– Switching with low control power– Ramp function, when the control voltage is switched on or

off, can be separately adjustedThe “IN+” input is to be connected to the control voltage (US = 24 V), the “IN–” input is to be bridged with the supply voltage (0 V) in the plug-in connector.The maximum current must usually be matched according to the solenoid data using potentiometer “G“. In the de-energized condition (“IN+“ = 0 V or “IN+“ = open) a biasing current can be set on “Z“. This biasing current can be used to reduce the switch-on delay, especially in conjunction with a ramp. If required, a value of between approx. 20 mA and ap-prox. 15 % of the nominal current can be set. The ramp times “ramp up“ (t <) and “ramp down“ – (t >) can be adjusted within the range of tmin to 5 s.

4-conductor technology– The “IN+“ input is to be connected to the control signal

(US = 0... 10 V/24 V), the “IN–“ input is to be connected to the reference potential of the control voltage.

The biasing current and the maximum current have to be adjusted by means of potentiometers “Z“ and “G“ before com-missioning. The current can then be adjusted proportionally between the set biasing current and the set maximum current according to the control voltage. The biasing current can be adjusted within the range of approx. 0 mA to approx. 15 % of the nominal current, the maximum current within the range of 0 to Imax (see technical data on page 5)..

UI

UU

DCDC

Z

G

f

1

210uF

PE

24 V

0 V (1)

(2)

(3)

(4)

(5)

(6)

(7)

t< t>

IN+

IN–

+UB

0V


Actual value

Imax

Inom (100 %)10

0 %

Appr

ox. 1

10 % UBCommand value

Adju

stm

ent r

ange

With factory setting

Max

. com

man

d va

lue

= 35

V

Characteristic curve

Block circuit diagram

(1): Internal voltage adjustment(2): Command value input(3): Zero point potentiometer “Z“ / biasing current I (IN = 0%)(4): Command value attenuator “G“ / maximum current I (IN = 100%)(5): Ramp time potentiometers “t <” and “t >“(6): Frequency range correction “f“ (7): Current output stage

FunctionThe plug-in amplifier is suitable for mounting onto a valve connection base according to EN 175301-803. By turning the plug insert and the electronics in the housing, the plug-in am-plifier can be mounted on the solenoid in 90° increments.

Command value feedforwardThe command value range is between 0 and UB. In the com-mand value range 0...10 V the solenoid current is proportion-al to the command value. From a command value of approx. 12 V up to UB the solenoid current is almost constant accord-ing to the Imax setting (switching application).

Ramp generatorRamp generator (5) limits the gradient of the control variable. The ramp times can be adjusted separately for up and down ramps. In switching applications, the ramps can be used to dampen the switch-on and switch-off impulse (in the case of switching off, with 3-conductor connection only, i.e. switching signal and supply are connected separately). This character-istic also depends on the valve and solenoid type. The down-stream command value attenuator (4) has no influence on the ramp time.

IB (0 %)0 %Note:

Depending on the type, the biasing current can also be “0“.

Characteristic curveUp to a command value of approx. 110 % the transfer char-acteristic curve rises linearly. The zero point can be corrected by means of potentiometer “Z“, the maximum value using po-tentiometer “G“.

Current output stageOutput stage (7) is self-clocking. The clock frequency de-pends on the current intensity, the operating voltage and the impedance of the controlled solenoid. The clock frequency can be re-adjusted by means of potentiometer “f“. The current output stage generates a regulated current signal according to the control variable provided by summator (3). Too high a clock frequency results in an increase in the valve hysteresis. Too low a clock frequency increases the noise level of the hy-draulic system.

Com-mand value



Type VT-SSPA1-1 VT-SSPA1-5 VT-SSPA1-50 VT-SSPA1-100 VT-SSPA1-150Operating voltage 24 V UB 24 VDC

u(t)max 35 Vu(t)min 18 V

Maximum cable inductance 1) Lmax 100 µHCurrent / power consumption (depending on solenoid data)

I [A] < 1.7 < 1.7 < 2.6 < 1.7 < 1.2Pmax [VA] < 40 < 40 < 60 < 40 < 30

Recommended back-up fuse I [A] 2; slow-blow 2; slow-blow 3,15; slow-blow

2; slow-blow 1.5; slow-blow

Minimum coil inductance Lmin [mH] 15 15 10 15 15Biasing current (adjustment range) IB [ mA] 0...300 0...300 0...350 0...250 0...200Biasing current (factory setting) IB [ mA] 100 0 100 0 100Nominal current (factory setting) I [A] 1.6 1.2 2.5 1.2 0.8Maximum current (adjustment range) Imax [A] IB...1,7 IB...1.8 IB...2.6 IB...1.7 IB...0.8Clock frequency at Imax f [Hz] 340 200 305 150 150 2)

Command value input (voltage)Proportional range U 0...10 VSwitching range U 12 V...UB

Resistance R 20 kΩRamp time (adjustment range) t 100 ms...5 s 60 ms...5 s

Type of connection (cable gland) 4 screw terminalsCable diameter 4,5 … 11 mmType of connection (M12 component connector) Component connector, 4-pin, M12x1Type of connection (solenoid) Base to EN 175301-803Number of pins (solenoid) 2 + PEDimensions see page 7Type of mounting M3 x 40 mmPermissible operating temperature range (amplifier with cable gland) ϑ [°C] –25 … +70 –25 … +70 –25 … +60 –25 … +70 –25 … +70

Permissible operating temperature range (amplifier with M12 component connector) ϑ [°C] –25 … +70 –25 … +70 –25 … +50 –25 … +70 –25 … +70

Storage temperature range ϑ –25 … +85 °CType of protection IP65 to EN 60529 with cable mounted/mating connector mountedWeight m 0.125 kg

1) Usually corresponds to a cable length of less than 100 m2) With a solenoid resistance of R = 19.5 Ω and a solenoid current

of I = 100 mA

0 V

+UBIN–IN+

1

2

4

3

BN

WH

BU

BK

2

1

4

3


Electrical connection

Terminal / Pin Terminal / Pin

+UB / 1 Operating voltage UB24 V IN+ / 2 command value input

24 V; 0...10 V

0 V / 3 0 V ground IN– / 4 Reference potential wfor command value

The protective earth conductor connection is accessible after the electronic printed-circuit board was removed.Connection cross-section:4 x 0.75 mm2 shielded or 5 x 0.5 mm2 shielded (connect shield in control cabinet)For VT-SSPA1-50:4 x 1.5 mm2 shielded (connect shield in control cabinet)Cable diameter: 4.5 … 11 mm

Terminal connection

Risk of malfunction in the case of EMC/ESD interference on the connection cableDo not route command value connection cables through this section!

2

1

4

3

A protective earthing conductor connection is not provided

Connection cross-section: 4 x 0.75 mm2 shielded (connect shield in control cabinet)

M12 plug-in connector connection

Component connector on amplifier

Mating connector and wire color of ready-to-connect cable kitPlease order cable kit separately, see page 2

brown +UB

white IN+

black IN–

blue 0 VShield

34

ca. 3

85,

5

25

G Z f 0 V

+UBIN–IN+61,75

ca. 71

34

t> t<

61,75

76,5


Control elements / dimensions (dimensions in mm)

Top view on open housing:G: Command value attenuator / maximum currentZ: Zero point potentiometer / biasing currentt <: Ramp time “up“t >: Ramp time “down“f: Frequency range

Cable gland PG11 Component connector M12 x 1

Bosch Rexroth AGHydraulicsZum Eisengießer 197816 Lohr am Main, GermanyTelefon +49 (0) 93 52 / 18-0Telefax +49 (0) 93 52 / 18-23 [email protected]

© This document, as well as the data, specifications and other informa-tion set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.The data specified above only serve to describe the product. No state-ments concerning a certain condition or suitability for a certain applica-tion can be derived from our information. The information given does not release the user from the obligation of own judgment and verifica-tion. It must be remembered that our products are subject to a natural process of wear and aging.

8/8 Bosch Rexroth AG Hydraulics VT-SSPA1-1(5, 50 ,100,150) RE 30116/09.10

– The plug-in amplifier may only be wired when disconnected from the power supply. – Do not lay cables near power cables!– The distance to aerial lines, radio sources and radar equipment must be at least 1m.– Use a measuring adapter for adjusting the potentiometers and for checking the current values, and measure currents electri-

cally isolated.– The specified maximum solenoid currents must not be exceeded.– Do not use solenoids with integrated free-wheeling diodes.– The supply voltage must be protected by means of a fuse - see technical data.

Note:The solenoids are controlled with a clocked voltage. The intensity of the solenoid voltage impulse corresponds to the applied operating voltage (+UB).Solenoids with integrated EMC suppressor circuit may only be used, if the permissible solenoid voltage - both, for positive and negative voltage - is greater than the actual operating voltage.Please observe the manufacturer’s information.

Note:– In the case of strongly fluctuating operating voltage, it may be required to provide an external smoothing capacitor having a

capacitance of approx. 470 µF to 2200 µF.– The cable length should not exceed 50 m. For longer lines, a capacitor with C ≥ 100 µF has to be connected between UB and

0 V. The line between capacitor and plug-in amplifier must not be longer than 50 m.Recommendation: Capacitor module VT 11110 (see RE 30750) sufficient for up to 5 plug-in amplifiers

Engineering / maintenance notes / supplementary information

1/6Analog amplifier module

Types VT-MSPA1-1, VT-MSPA1-10, VT-MSPA1-11

Component series 1X

RE 30223/02.12Replaces: 08.10

Table of contents Features– Suitable for controlling direct operated proportional pressure

control valves:• Type DBET…, component series 6X• Type 3DRE(M) 10…, component series 7X• Type 3DRE(M) 16…, component series 7X• Type (Z)DRE 6…, component series 1X• Type ZDRE 10…, component series 2X• Type (Z)DBE6..., component series 2X• Type DRE(M) 10, 25, 32 ..., component series 6X

– Reverse polarity protection of the operating voltage– Differential input for command value voltage +10 V– Ramp generator, separately adjustable for up and down ramps– Zero point potentiometer– 1 command value attenuator– Characteristic curve generator– Clocked current output stage – Output short-circuit-proof– LED indicator lamp: • Ready (green)– Measuring sockets for: • Pressure command value

• Actual current value– Dither generator with command value and operating voltage-

related frequency

H6833_d

Contents PageFeatures 1Ordering code 2Functional description 2Block circuit diagram 3Terminal assignment / drawing 3Technical data 4Output characteristic curves 5Unit dimensions 5Engineering / maintenance notes / supplementary information 6

2/6 Bosch Rexroth AG Hydraulics VT-MSPA1-1 RE 30223/02.12

Ordering code

Analog amplifier moduleFor controlling valves of type DBET..., component series 6X = 1For controlling valves of type (Z)DRE 6..., component series 1X = 10For controlling valves of type 3DRE(M) 10..., component series 7X, 3DRE(M) 16..., component series 7X, ZDRE 10..., component series 2X,(Z)DBE6..., component series 2xand DRE(M) 10, 25, 32 ..., component series 6x = 11Component series 10 to 19 = 1X(10 to 19: unchanged technical data and pin assignment)

Further details in clear textV0 = Standard version

VT-MSPA1 1X V0 *

Functional description

Analog amplifier for controlling pressure valves without elec-trical feedback. The modular design allows simple mounting on hat rails, which are commonly provided in control cabinet.

Command value input: 4The amplifier module is controlled with a standard com-mand value signal of 0 to +10 V. Any zero point offsets can be corrected by means of zero point trimming potentiometer (Zw) (6).

Ramp generator: 5Ramp generator (5) limits the gradient of the control output. Trimming potentiometer “t <“ (7) is provided for adjusting the time of the rising command value signal, trimming potentiom-eter “t >“ (8) for the falling command value voltage. The ad-justable time can be found in the technical data.

Characteristic curve generator: 10The nominal current of 1.6 A for the solenoid can be adjust-ed by means of trimming potentiometer “Gw“ (9). Character-istic curve generator (10) changes the command value signal in a way that a linear command value/pressure characteristic curve is obtained.

Clock pulse generator: 12Clock pulse generator (12) generates a frequency for the out-put stage, which is adapted to the command value.

Current output stage: 11-14On the basis of the control output provided by characteristic curve generator (10) and the clock frequency the current out-put stage generates a PWM signal, which is supplied to the solenoid. The solenoid current is measured and compared with the control output by current regulator (11), and the dif-ference is corrected.

Fault recognition: 15Monitors the solenoid cables for cable break and short-circuit and the output stage for overcurrent. If a fault is present, the green “ready” indicator lamp goes out.

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Hydraulics Bosch Rexroth AGRE 30223/02.12 VT-MSPA1-1 3/6

Block circuit diagram

1 Fuse2 Suppressor diode3 Power supply4 Command value input5 Ramp generator6 Zero point potentiometer

7 Up ramp potentiometer8 Down ramp potentiometer9 Potentiometer Imax

10 Characteristic curve generator11 Current regulator12 Clock pulse generator

13 Schmitt trigger14 Output stage15 Fault recognition16 Measuring socket

Terminal assignment / drawing

Command value

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Terminal1 +UB

2 Ground3 –Ucomm

4 Solenoid +5 Solenoid –6 +Ucomm

Terminal assignment Drawing

Potentiometers: “Gw” Pressure command value

“Zw” Zero point“t <” Ramp time “up”“t >” Ramp time “down”

Sockets: “w“ Pressure command value

“I” Actual current value"⊥” Measurement zero

F on front panel



VT-MSPA1-1 VT-MSPA1-10 VT-MSPA1-11Operating voltage UB 24 VDC +40 % –10 %Operating range::– Upper limit value uB(t)max 35 V– Lower limit value uB(t)min 21 VPower consumption Pmax < 50 VACurrent consumption Imax < 1.3 AFuse Is Electronic overload fuse and SMD fuse (soldered in)Inputs:– Command value (differential input) Usoll 0 to +10 V; Ri = 100 kΩOutputs: Imin 0.1 A– Solenoid current/resistance Imax 1.9 A; R20 = 5.5 Ω 1.9 A; R20 = 5.2 Ω 1.9 A; R20 = 5.5 Ω– Frequency f 180 to 450 Hz 330 Hz ±10 % 180 to 450 HzAdjustment ranges:GW: Solenoid current I 100 mA…1.9 AZW: ±25 %t >:t <: Ramp t 60 ms…5 s 120 ms…5 s

Measuring sockets:– Command value “w“ U 0 to 10 V– Actual current value “I“ U 1 mV 1 mA solenoid currentType of connection 6 screw terminalsType of mounting Hat rail TH 35–7.5 to EN 60715Type of protection to EN 60529 IP 20Dimensions (W x H x D) 25 x 79 x 85.5 mmPermissible operating temperature range ϑ 0 to +50 °CStorage temperature range ϑ –25 to +85 °CWeight m 0.15 kg

Note:For details regarding environmental simulation tests covering EMC (electro-magnetic compatibility), climate and mechanical loading see data sheet 30223-U.

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Output characteristic curve



Out

put c

urre

nt in

mA →

1 = VT-MSPA1-1 and VT-MSPA1-112 = VT-MSPA1-10

Bosch Rexroth AGHydraulicsZum Eisengießer 197816 Lohr am Main, GermanyPhone +49 (0) 93 52 / 18-0Fax +49 (0) 93 52 / 18-23 [email protected]



Engineering / maintenance notes / supplementary information

– The amplifier module may only be wired when disconnected from the power supply!– The distance to radio equipment must be sufficiently large (>> 1 m)!– Shield command value cables; do not install them in the vicinity of power cables; shield solenoid cables!– Do not use free-wheeling diodes in solenoid cables!– In the case of strongly fluctuating operating voltages, it may in some cases be required to install a smoothing capacitor hav-

ing a capacitance of at least 2200 µF. Recommendation: Capacitor module VT 11110 (see data sheet 30750); sufficient for up to 3 amplifier modules.




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