EWG 01.1

Contactless and wear-free sensing of the valve position by means of Hall sensors for signalling the valve position.

Data 3-wire or 4-wire system 2-wire system

Output current IA 0 – 20 mA, 4 – 20 mA 4 – 20 mA

Power supply UV1) 24 V DC (18 – 32 V) 24 V DC (18 – 32 V)

Max. current consumption LED off = 26 mA, LED on = 27 mA 20 mA

Max. load RB 600 Ω (UV – 12 V)/20 mA

Impact of power supply 0.1 %

Load infl uence 0.1 %

Temperature impact < 0.1 ‰/K

Ambient temperature –60 °C to +80 °C2)/+90 °C2)

EWG 01.1

Plug/socket connector XKfor customer connection

4 – 20 mA

21 22 23 24

14

Wiring

2-wire system

EWG 01.1

Plug/socket connector XK for customer connection

0 – 20 mA4 – 20 mA

20 2221 23 24

+24 V 0 V

421

EWG 01.1

Plug/socket connector XKfor customer connection

0 – 20 mA4 – 20 mA

20 2221 23 24

+24 V 0 V

4321

3-wire system 4-wire system

Measuring point 1 (+)

Measuring point 2 (–) 0/4 – 20 mA

S1 (0/4 mA)

LEDS2 (20 mA)

3-wire and 4-wire system

2-wire system

Setting: Setting is performed via push buttons S1 (0/4 mA) and S2 (20 mA). Refer to operation instructions relating to actuator.

Notes on table

1) Power supply Power supply possible via: AC, AM controls or external power supply

2) Ambient temperature Depending on temperature range of the actuator: Refer to name plate

Inverse operation: Observe inversed assignment of push buttons S1 and S2 during setting.

EWG 01.1, RWG 4020, potentiometer

Technical data Electronic position transmitters/potentiometer

We reserve the right to alter data according to improvements made. Previous documents become invalid with the issue of this document.

Y004.388/001/en Issue 1.15 Page 1/3

RWG 4020

On the basis of the actual potentiometer value, the RWG generates a current signal for signalling the valve position.

Data 3-wire or 4-wire system 2-wire system

Output current IA 0 – 20 mA, 4 – 20 mA 4 – 20 mA

Power supply UV1) 24 V DC (18 – 32 V) 14 V DC + (I x RB), max. 30 V

Max. current consumption 24 mA at 20 mA output current 20 mA

Max. load RB 600 Ω (UV – 14 V)/20 mA

Impact of power supply 0.1 %/V 0.1 %/V

Load infl uence 0.1 %/(0 – 600 Ω) 0.1 %/100 Ω

Temperature impact < 0.3 ‰/K

Ambient temperature –60 °C to +80 °C2)/+90 °C2)

Transmitter potentiometer 5 kΩ

Notes on table

1) Power supply Power supply possible via: AC, AM controls or external power supply

2) Ambient temperature Depending on temperature range of the actuator: Refer to name plate

RWG 4020

Plug/socket connector XKfor customer connection

4 – 20 mA

21 22 23 24

Wiring

2-wire system

RWG 4020

Plug/socket connector XK for customer connection

0 – 20 mA4 – 20 mA

20 2221 23 24

+24 V 0 V

RWG 4020

Plug/socket connector XKfor customer connection

0 – 20 mA4 – 20 mA

20 2221 23 24

+24 V 0 V

3-wire system 4-wire system

Measuring point 1 (+)

Measuring point 2 (–) 0/4 – 20 mA

R2

(0/4 mA)

N

(20 mA)

M

3-wire and 4-wire system

2-wire system

Inverse operation:

Setting:

For inverse operation, exchange terminals 7 (red/RD) and 5 (black/BK) on position transmitter board.

Refer to the operation instructions relating to actuator.

EWG 01.1, RWG 4020, potentiometer

Technical data Electronic position transmitters/potentiometer

Y004.388/001/en Issue 1.15 Page 2/3

We reserve the right to alter data according to improvements made. Previous documents become invalid with the issue of this document.

Potentiometer

Travel sensor for recording the valve position.

Data Precision wire potentiometer

Precision fi lm potentiometer

Precision wire potentiometer in tandem version

Precision fi lm potentiometerin tandem version

Recommended for OPEN-CLOSE duty Modulating duty OPEN-CLOSE duty Modulating duty

Independent linearity ≤ 1 %

Resistance (standard) 0.2 kΩ 5 kΩ 0.2/0.2 kΩ 1 kΩ/5 kΩ

Resistance (option)3) 0.1 kΩ0.5 kΩ1.0 kΩ2.0 kΩ5.0 kΩ

1 kΩ 0.5/0.5 kΩ1.0/1.0 kΩ0.1/5.0 kΩ0.2/5.0 kΩ1.0/5.0 kΩ5.0/5.0 kΩ

1 kΩ/1 kΩ5 kΩ/5 kΩ

Resistance tolerance +/– 5 % +/– 10 % +/– 5 % +/– 10 %

Rated power 1.5 W 0.5 W 1.5 W 0.5 W

Max. wiper current 30 mA 0.1 mA 30 mA 0.1 mA

Lifetime 100,000 cycles 5•106 cycles 100,000 cycles 5•106 cycles

Synchronous operation – – +/– 1.5 % +/– 2.0 %

Ambient temperature2) – 60 to +120 °C – 60 to +90 °C – 60 to +120 °C – 60 to +90 °C

Notes on table

2) Ambient temperature Depending on temperature range of the actuator: Refer to name plate

3) Resistance (option) Further options on request

The position of the valve can be transmitted as a continuous signal by a potentiometer. The potentiometer is installed in the control unit of the actuator.

We recommend:Using the potentiometer as voltage divider. Depending on the supply voltage, suitable series resistors are to be provided. Please observe max. rated power.

For the tandem version, two signals can be evaluated by two potentiometers, e,g, one signal for external controls or one signal for AUMA AC integral controls.

EWG 01.1, RWG 4020, potentiometer

Technical data Electronic position transmitters/potentiometer

We reserve the right to alter data according to improvements made. Previous documents become invalid with the issue of this document.

Y004.388/001/en Issue 1.15 Page 3/3