Electronic position transmitterRWG 4020

RWG 5020 Ex

Technical Information

2Features of the electronic position transmitter RWG

Electronic board

Conductiveplasticpotentiometer

Application

If a continuous feedback signal of thevalve position is required, an elec-tronic position transmitter RWG canbe used. The signal may be transmit-ted tol a remote position indicatorl an external positionerl an integral positioner (actuators

for modulating service with motorcontrols AUMA MATIC)

Two versions are available:l RWG 4020l RWG 5020 Ex (explosion proof)

The electronic position transmitterprovides a continuous current signal,which corresponds to the actualvalve position.

Areas of application

The electronic position transmittercan be employed in the followingAUMA multi-turn and part-turn actu-ators:l Version RWG 4020 in actuators

AUMA NORM:SA 07.1 to SA 48.1SAR 07.1 to SAR 30.1SG 05.1 to SG 12.1and in AUMA MATIC:SA 07.1 to SA 16.1SAMEx 07.1 to SAMEx 16.1SARMEx 07.1 to SARMEx 16.1SG 05.1 to SG 12.1

l Version RWG 5020 Ex in actua-tors AUMA NORM:SAEx 07.1 to SAEx 40.1SAREx 07.1 to SAREx 16.1SGEx 05 to SGEx 12

The version RWG 4020 can be oper-ated as a 2-wire, 3- or 4-wire system.The version RWG 5020 Ex is intrinsi-cally safe and can be operated as a2-wire system in hazardous areas.

Function & features

The electronic position transmittercontinuously monitors the valvetravel. The valve movement is trans-mitted via a reduction gearing1) withinthe actuator to a high quality precisionpotentiometer. In the electronic boardthe feedback is converted into ananalogue current signal, whoserange may be set to 0 - 20 mA or 4 - 20mA.

1) The reduction gearing must be selectedto suit the valve travel i.e. number ofturns or amount of swing angle.

A slip clutch protects the positiontransmitter from being damaged, inthe event of the potentiometers max.rotation being exceeded.

In multi-turn actuators for modulatingduty, the slip clutch is additionally fit-ted with a spring to minimise back-lash.

On-line setting with integratedmeasuring pointsMeasuring points on the electronicboard allow the connected RWG tobe adjusted without having to take itout of circuit.

SettingsZero and span can be adjusted inde-pendently at the electronic board viatrimmer potentiometers, which areeasily accessible in the control unit.

1006000

20

Signalin mA

4

Valve travel in %

3Technical Data

Version RWG 4020

Data 2-wire-system 3- and 4-wire-systemOutput signal Ia 4 - 20 mA 0 - 20 mA

4 - 20 mASupply voltage UV1) 14 V DC + (I x RB)

max. 30 V24 V DC15% smoothed

Current drawn max. 20 mA 24 mA(with 20 mA output current)

External resistance RB max.(U 14 V)

20mAV 600

Effect of supply voltage fluctuation 0,1% / V 0,02% / VEffect of external resistance 0,1% / 100 0,1% / (0 - 600 )Temperature drift < 0,3% / 10 K < 0,3% / 10 KLinearity variation(electronics and potentiometer)

1% 1%

EMC tests in accordance with EN 50 081-2 and EN 50 082-2 tested toget-her with motor controls AUMA MATIC and with power supply unitPS 01 resp. in the case of AUMA NORM actuators

Ambient temperature range:- Multi-turn actuators for open-close duty SA- Multi-turn actuators for modulating duty SAR- Part-turn actuators SG

40 C to +70 C40 C to +60 C40 C to +70 C

40 C to +70 C40 C to +60 C40 C to +70 C

1) Smoothed supply voltage; for actuators AUMA NORM we recommend our power supply unit PS 01.

Explosion-proof version RWG 5020 Ex

Data 2-wire-systemOutput signal Ia 4 - 20 mASupply voltage UV 10 - 28,5 V DCCurrent drawn max. 20 mA

External resistance RB max.(U 10 V)

20 mAV

Effect of supply voltage fluctuation 0,01% / VEffect of external resistance 0,1% / (0 - 600) Temperature drift < 0,1% / 10 KLinearity variation(electronics and potentiometer)

1%

EMC tests in accordamce withEN 50 081-2 and EN 50 082-2tested together with powersupply unit PS 01

Ambient temperature2) 20 C to +60 CExplosion protection EEx ib IIC T5Certificate of conformity PTB Nr. Ex-90.C.2017 X

2) AUMA actuators SAEx 07.1 to SAEx 40.1 and SAREx 07.1 to SAREx 16.1 are approved by PTBfor ambient temperature up to +40 C.Special rating of the actuators SAEx/SAREx for max. +60 C ambient temperature is possible.

4Installation and configuration

Electronic board

Precision potentiometerwith slip clutch

Control unit ofthe actuator Precision potentiometer with

slip clutch and anti-back lash spring(for modulating duty)

3- and 4-wire system

2-wire system

When changing over, the wiringhas to be modified, see page 5.

Measuringpoints

Installation

The electronic position transmittercan be installed in the control unit ofAUMA actuators as an option. Sub-sequent fitting is possible.

Configuration

Version RWG 4020 can be configured as:l 2-wire systeml 3- and 4-wire system.l Inverse signal 2-wire systeml Inverse signal 3- and 4-wire system

The explosion-proof version RWG5020 Ex is designed as a 2-wire-system. Inverse signal is possible.The RWG 5020 Ex cannot be used asa 3- or 4- wire system.

5Connection and wiring

Version RWG 4020

Connection:2-wire system

3-wire system

4-wire system

Internal wiring:2-wire system

3-wire system

4-wire system

Version RWG 5020 Ex

Connection: 2-wire system Internal wiring: 2-wire system

General Notes:

AUMA supplyRD = redBK = blackYE = yellow

l Use screened cables to theactuator

l For actuators AUMA NORM werecommend the use of our stabi-lized power supply unit PS 01.

l For actuators with motor controlsAUMA MATIC an internal voltagesupply is available at no extracost.

Important notes:for version RWG 5020 Ex

l The power supply unit has to beintrinsically safe or must beinstalled with a safety barrier.

l Observe applicable regulationsand installation instructions forintrinsically safe circuits.

RWG 4020

21 22 24

RWG-board

7 6 5

1 2RD BK 4 YE

5 k

RWG 4020

plug / socket forcustomer connections

4 20 mA

21 22 23 24

RWG 4020

0 20 mA4 20 mA

20 2221 23 24

+24 V 0 V

plug / socket forcustomer connections

RWG 4020

RWG-board

7 6 5

2423

1 RD 4 BK

5 k

RWG 4020

21 22 23 24

RWG-board

7 6 5

1 2 3RD BK BK 4 YE

5 k

RWG 5020 Ex

RWG-board

5 4 3

2423

1 RD 2 BK

5 k

RWG 4020

0 20 mA4 20 mA

20 2221 23 24

+24 V 0 V

plug / socket forcustomer connections

RWG 5020 Ex

+U

23 24

safetybarrier

For PTB-requirementsrefer to PTB certificate

voltage supply

4 20 mA

0 V

terminals forcustomer connections

6Settings and adjustment

N M

R2

Cover plateHousingMeasuring points0/4-20 mA

N0(4)

max(20 mA)

MR2

Settings and adjustmentThe electronic position transmitter isset at the factory according to the sig-nal range specified by the customer.For subsequent adjustments, e.g.with an indicator instrument, the set-

ting instructions below have to be fol-lowed.After mounting the actuator to thevalve or during commissioning, thesetting has to be checked and read-

justed, if necessary.Specific safety instructions as appli-cable for such equipment must beobserved.

Setting for 2-wire system 4 - 20 mA and 3-/4-wiresystem 0 - 20 mA

1. Move valve to end position CLOSED.2. Remove cover plate.3. Connect ammeter for 0 - 20 mA to measuring

points. In end position CLOSED for 3- and 4-wiresystem value is normally 0 mA, for 2-wire system4 mA.

4. Turn potentiometer (R2) clockwise to initial posi-tion. Turn potentiometer (R2) whilst observing adecreasing output signal until stop is felt.

5. Turn trimmer potentiometer (N) clockwise, untiloutput current starts to increase.

6. Turn back trimmer potentiometer (N), until a resid-ual current of approx. 0,1 mA (or 4,1 mA in thecase of a 2-wire system) is obtained. This ensuresthat the signal remains above the dead and livezero point.

7. Move valve to end position OPEN.8. Set to end value 20 mA with trimmer potentiome-

ter (M).9. Approach end position CLOSED anew and check

minimum value (0 mA or 4 mA). If necessary,readjust.

10. Refit cover plate.11. Clean sealing face, check O-Ring, apply a thin film

of non-acidic grease to sealing face.12. Fit and fasten switch compartment cover.

Setting for 3- and 4-wire system 4 - 20 mA1. Move valve to end position CLOSED.2. Remove cover plate.3. Connect ammeter to measuring points.4. Turn potentiometer (R2) clockwise to initial posi-

tion. Turn potentiometer (R2) whilst observing adecreasing output signal until stop is felt.

5. Turn trimmer potentiometer (N) clockwise, untiloutput current starts to increase.

6. Turn back trimmer potentiometer (N), until a resid-ual current of approx. 0,1 mA is obtained.

7. Move valve to end position OPEN.8. Set to end value 16 mA with trimmer potentiome-

ter (M).9. Move valve to end position CLOSED.10 Set trimmer potentiometer (N) to initial value

4 mA. This results in a simultaneous shift of theend value by 4 mA so that the range is now 4 -20 mA

11. Approach both end positions anew and check set-ting. If necessary, readjust.

12. Refit cover plate.13. Clean sealing face, check O-Ring, apply a thin film

of non-acidic grease to sealing face.14. Fit and fasten switch compartment cover.

On-line setting

At the connected RWG 4020 it ispossible to perform an on-line mea-surement of the transmitter output

signal on site by using the measuringpoints. The current circuit does nothave to be interrupted, the signal 0/4

- 20 mA appears directly in theammeter display.

7Notes

Inverse signalInterchange the connections red (RD) and black (BK) atthe potentiometer for inverse signal.

Note:If the maximum value of the output current 20 mA is notreached, check whether reduction gearing with correctratio has been fitted.

PTB Certificate of Conformity for RWG 5020Ex

automates valves

WERNER RIESTER GmbH & Co. KGArmaturen- und MaschinenantriebeP.O. Box 1362 D - 79373 MllheimTel 07631/809-0 Fax 07631/13218e-mail riester@auma.comhttp://www.auma.com

DO 01.01.006GB / 1.99

GermanyWERNER RIESTERGmbH & Co. KGFactory MllheimP.O.Box 13 62D-79373 Mllheim

Factory Ostfildern-NellingenP.O.Box 11 51D-73747 Ostfildern

Service-Centre CologneMathias-Brggen-Str.164D-50829 Kln

Service-Centre MagdeburgAm Stadtberg 1D-39167 Niederndodeleben

North OfficeD-29664 Walsrode

West OfficeD-45549 Sprockhvel

South-West OfficeD-69502 Hemsbach

Baden/Switzerland OfficeD-79373 Mllheim

Wrttemberg OfficeD-73747 Ostfildern

Bavaria OfficeD-93352 Rohr

East OfficeD-39167 Niederndodeleben

EuropeAUMA ArmaturenantriebeGesellschaft m.b.HA-2512 Tribuswinkel

AUMA (Switzerland) AGCH-8965 Berikon / AG

AUMA ServopohonyCZ-10 200 Praha 10

AUMA FranceF-95157 Taverny Cedex

OY AUMATOR ABFIN-02271 Espoo 27

AUMA ACTUATORS LtdGB-ClevedonNorth Somerset BS21 6QH

AUMA ITALIANA s.r.l.I-20020 Lainate / Milano

AUMA BENELUX B.V.NL-2314 XT Leiden

AUMA Polska SP. zo . oPL-40816 Katowice

GRNBECH & SNNERDK-2450 Kbenhavn SV

IBEROPLAN S.A.E-28027 Madrid

D. G. Bellos & Co. O.E.GR-10438 Athens

SIGURD SRUM A.S.N-1301 Sandvika

INDUSTRA Lda.P-2796 Linda A Velha

ERICHS ARMATUR ABS-20039 Malm

MEGA ENDSTRI KONTROLTR-06060 Ankara

AfricaAUMA South Africa (Pty) Ltd.ZA-Springs 1560

A.T.E.C.ET-Cairo

AsiaAUMA (INDIA) Ltd.IND-Bangalore 560 058

AUMA Beijing Representative OfficePRC-Beijing 100029

AUMA ACTUATORS(SINGAPORE) Pte. Ltd.SGP Singapore 318992

AUMA Middle East Representative OfficeUAE-Abu Dhabi

PERFECT CONTROLS Ltd.HK-Tsuen Wan,Kowloon, Hongkong

MORITANI & Co. Ltd.J-Tokyo 103

AL-ARFAJ Eng. Company W.L.L.KWT-Salmiyah 22004

BEHZAD TradingQ-Doha

K. Y. CONTROLS Ltd.ROC-Taipei, Taiwan

DONG WOO Valve Control Co. Ltd.ROK-Seoul, Korea

Sunny Valves and Intertrade Corp. Ltd.THA-Yannawa - Bangkok 10120

AustraliaBARRON GJM Pty. Ltd.AUS-Artarmon NSW 2064

North- and South AmericaAUMA ACTUATORS INC.USA-Pittsburgh, PA 15 205

ASVOTEC Termoindustrial Ltda.BR-04634 So Paulo SP

TROY-ONTOR Inc.CDN-Etobicoke, Ontario

TECNICA HANSA Ltd.RCH-Santiago de Chile 1

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FrontpageFeatures of the electronic position transmitter RWGApplicationRange of useFunction & features

Technical DataVersion RWG 4020Explosion-proof version RWG 5020 Ex

Installation and configurationInstallationConfiguration

Connection and wiringSettings and adjustmentVersions RWG 4020 and RWG 5020 ExVersion RWG 4020

PTB certificate of conformity for RWG 5020ExAUMA worldwide