Christian Dürr DC-MH/SPS-MC1€¦ · DC-MH/SPS-MC1 | Nov. 2018 © Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution,

DC-MH/SPS-MC | Nov. 2018

© Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.1

M4 Christian Dürr

DC-MH/SPS-MC1



M4 - LS Control Block

RE 64276

RE 64283

RE 64279

Modular design

Low hysteresis

Load pressure-compensated

Programmable electronics

Adjustable via stroke limiter

Sandwich plate design

Type of operation:

hydraulic

mechanical

electro-hydraulic

CAN-BUS

Size: 12; 15; 22

Flow: 130; 210; 400

L/min

Pressure: 350/420 bar

Features

Customer benefit

DC-MH/SPS-MC1 | Nov. 2018


Product Overview - M4-12Technical Data M4-12

Max. Flow (pump/actuator):

200 / 130 l/min

Max. Pressure (pump/actuator):

350 / 420 bar

Applications:

Drilling Rigs, Cranes, Truck Cranes, Forestry

machines, Municipal Vehicles, Telehandler,

Firefighting Vehicles, Tippers, special vehicles,

etc.





300 / 210* l/min


350 / 420 bar

Applications:

Drilling Rigs, Cranes, Truck Cranes,

Forestry machines, Municipal Vehicles,

Telehandler, Firefighting Vehicles, Tippers,

special vehicles, etc.

*with standard pressure compensator 165 l/min for the actuator





600 / 400 l/min


350 / 420 bar

Applications:

Drilling Rigs, Cranes, Forestry machines

etc.

DC-MH/SPS-MC1 | Nov. 2018


Product Overview - M4 seriesFeatures (1)

Inlet plate

OC or CC variant

Integrated pilot oil supply

Directional valve

max. No. of valves

Size 12: 10 (20 with mid inlet)

Size 15: 9 (18 with mid inlet)

Size 22: 8

With or without pressure compensator

With or without load-holding valve

Adjustable LS pressure relief for each consumer port

Electro-proportional LS pressure cut-off for each

section



Product Overview - M4 seriesFeatures (2)

Types of operation:

Mechanical

Hydraulic with adjustable stroke limitation

(TH5/TH6)

Electrohydraulic proportional or on/off

Electrohydraulic proportional with On-Board

Electronics EPM2/CPM-1X

CAN-Bus interface

Optional position feedback

Override hand lever

non-following or following



M4 Components - M4-12 Product ConfigurationM4-12: Overall Valve Concept

Pilot Cover (A)

electrohydraulic

w/ integr. electr.

electrohydraulic

hydraulic

mechanic

End plates

P,T, LS ports

LS-unloading

standard

Lever

Pilot Cover (B)

tongue

Inlet plates

Open Center

Closed Center

Mid Inlet

servo-hydraulic

Compact Inlet,

w/ or w/o internal

Priority

Shock / Anti

Cavitation Valves

adjustable / fixed

Port sizes

G1/2, G3/4

flange

LS-Pressure Relief Valves

Fixed / el.prop



Inlet for fixed and variable displacement pumps

For variable displacement pumps

For fixed displacement pumps

Inlet element for fixed

displacement pumps can be

adjusted for use with variable

displacement pumps



Main Spool 18

(interchangeable)

LS-Ports

(A/B)

Shock / Anti

Cav. valve

Pressure

Compensator

M4 Components - Overview

Stroke Limiter

A and B

LS-Pressure Relief

Valves (A/B)

Section M4-12 with EPM2

EPM2



M4 Components – Main Spool

Spool variants

P TLS

BA MAMB

P TLS

BA MAMB

P TLS

BA MAMB

P TLS

BA MAMB

J

A/B T

E

A/B/T/P closed

Q

A/B T throttled

W

4-positioning

R

Regeneration



M4 Components – Main SpoolMain spool

The spool characteristics is

determined by the notch

geometry

Example of notch geometry from linear to linear smooth characteristics

Individual

adaption to

machine function

is possible up on

request




BA

T

P

X

Y

"b"

"a"

T

MA MB

LSP

Section M4-12

Measuring ports

LS pressure relief

Stroke limiter

Electro-hydr.

piloting

Pressure relief

plug

Pressure

compensator

LS shuttle valve

Pressure relief

valve



M4 Components – Pressure compensatorPressure compensator

M4-12 p

(pressure compensator)

1 shim : up to 138 psi

9,5 bar

2 shims : up to 167 psi

11,5 bar

0 shim : up to 102 psi

7 bar

M4-15p

(pressure compensator)

1 shim: up to 145 psi

10 bar

2 shims: up to 174 psi

12 bar

0 shim: up to 130 psi

9 bar

P



M4 Components – Pressure compensatorAdjustment of flow by the pressure compensator



M4-12 Hand Lever Positions




BA

T

P

X

Y

"b"

"a"

T

MA MB

LSP

Section M4-12

Measuring ports

LS pressure relief

Stroke limiter

Electro-hydr.

piloting

Pressure relief

plug

Pressure

compensator

LS shuttle valve

Pressure relief

valve



M4 Components – Electrohydraulic PilotingFunction Electrohydraulic Piloting

P T

A

Symbol

PT

AP

T

A

FTDRE2 FTWE2

Electro-hydraulic

proportional

Electro-hydraulic

switchable

With Gauze Filter Dirt resistant

Max. volume flow: 2,6 l/min

Pressure range: 0 - 18 bar



M4 Components – Electrohydraulic PilotingFTDRE2 with Gauze Filter

Gauze filter with 200µm wire mesh

protects the pilot valve from solid

contamination



Inlets with LS cut off function

For variable displacement pumps For fixed displacement pumps

LS-pumpLS-block

LS-block




BA

T

P

X

Y

"b"

"a"

T

MA MB

LSP

Section M4-12

Measuring ports

LS pressure relief

Stroke limiter

Electro-hydr.

piloting

Pressure relief

plug

Pressure

compensator

LS shuttle valve

Pressure relief

valve



M4 Components – LS pressure relief valveIndividual LS pressure relief valve on each slice

Adjustable versions are available

Adjustable versions are for: 0 – 150 bar

150 – 350 bar



M4 Components – KBPS (LS pressure relief valve)

By setting different pressure on El.-prop. LS-Relief Valve, machine can easily and flexibly cope

with different working conditions. (like drill a hole in sand soil or rocks…)




Rising curve: in case of electronics problems the pressure in the system and movement stops

Falling curve: in case of electronics problems the system pressure keep on high level

Rising and falling curve




Other option possible: LS shut off valve for machine safety requirement

cover plate or plug plate, keep the housing.



Safety Inlet Closed Center SJ



Safety Inlet Open Center SP



Selector axis: outrigger, stop, boom control

Outrigger

Boom control

For variable and fixed displacement

pumps

Pump pressure max = 400bar,

Qmax,

internal: 90l/min, external: 80l/min

Operating: all types of M4-12

Emergency stop via handlever

Maximum flow adjustable via stroke

limitation on covers

OC- or LS-consumer at external port C

possible

Position in control block is free-choosable

M4-12 Axis



M4 ConfiguratorM4 Configurator - Bosch Rexroth Online Tool

www.boschrexroth.com/m4

Gain access to:

• Technical data

• Hydraulic schematic

• 2D installation drawing

• 3D models

• List of Components

• Worldwide fast delivery

via our M-LOG partners

http://www.boschrexroth.com/m4configurator



CPM: New OBE for M4 control blocks



CPM: New OBE for M4 control blocksMotivation and premises for the Can-controlled Pilot Module

31

Some advantages of OBE control

One cable from controller to control block

Comprehensive options for customised parameterisation from the factory

Can be parameterised via CAN bus interface

Change of operation mode (parameters) while working

Electronic flow sharing with LS-valve

Selectable time ramp for shutdown in the event of a failure

Selectable monitoring limits for the operating voltage

Type of protection to DIN 40050 IP67, IP69K;

(only with plugged Bosch Compact 1 plug-in connectors)

Internal measurement of operating hours and internal saving of diagnosis data

31



CPM 1.x: Can controlled Pilot Module for M4 valves

Enhancement of the predecessor product EPM2

Performance improvement: precision

Performance improvement: dynamics

Serviceability improvement

Quality improvement

Easier application

Response to Megatrends

Electronification

Functional Safety (focus on boom control)

►► Develop a great valve actuation for an outstanding hydraulic valve ◄◄

Motivation and premises for the Can-controlled Pilot Module



CPM 1.x: Can controlled Pilot Module for M4Main product features

3333

Volumetric / closed loop control (new)

Improved dynamic behavior

Improved positioning accuracy

(e.g. regarding resolution and hysteresis)

Based on the proven Rexroth EHS technology

CAN interface / protocols: compatible to EPM2

CANOpen is the standard protocol for DC

Observance of EN/ISO 13849

applicable in PL=d systems (safe oil supply interruption)

Service / Commissioning :

Self diagnosis (electronic & hydraulic)

Error memory (new)

Secured interface for valve data (new)

Operation via BODAS for commissioning

and service (new)

Bosch AE

Automotive Electronics

Cooperation with Bosch AE (new)

Improved quality in the electronics

Guaranteed future for electronic

components

Implementation in M4 Configurator;

guided query of all relevant data (new)



CPM 1.x: Can controlled Pilot Module for M4EHS caracteristc-curve shape

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

90,0

100,0

0 10 20 30 40 50 60 70 80 90 100

Sollwert [%]

Öls

tro

m

[%]

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

Linear (x) to progressive

(x3) curve shape can be

chosen between

setpoint for oil flow and

control of the output

stages

Linear to progressive

Raising and lowering

separately

Choice of 16 shapes

For adapting the fine

control behavior

Curve shape

Predefined CPM functions



CPM 1.x: Can controlled Pilot Module for M4

EHS caracteristc-curve gradient

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

90,0

100,0

0 10 20 30 40 50 60 70 80 90 100

Sollwert[%]

Öls

tro

m [

%]

FE

FD

FC

E6

CF

B7

9F

88

6F

58

03

02

01

For adjusting the max.

oil flow

Raising and lowering

separately

0 - 100%

13 factors

Adjustment for

hydraulic cylinder or

hydraulic motor

Modulation




CPM 1.x: Can controlled Pilot Module for M4EHS time ramps

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

90,0

100,0

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3200

3400

3600

3800

4000

4200

4400

4600

4800

5000

Zeit [ms]

Öls

tro

m [

%]

0102030405060708090A0B0C0D0E0F102030405060708090A0B0C0D0E0F0FF

Oil flow is increased up

to 100% using ramp

time

31 curves

20 - 4000 ms

Close and/or switch off

during raising and/or

lowering

Switch off with ramp in

the event of an error

Time ramps


DC-MA/SMV2 | Nov. 2018


Chapter title (select multiple slides)

not more

than you

need

It is

than you

are used

to:

M4

Just more

M4 References

230106

Thank you

for

your attention

Documents

Christian Dürr DC-MH/SPS-MC1€¦ · DC-MH/SPS-MC1 | Nov. 2018 © Bosch Rexroth AG 2018. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution,