GF EA25 Instruction Manual

Electric actuators type EA25-250:
Positioner
Instruction Manual
The technical data are not binding and not expressly
warranted characteristics of the goods. They are
subject to change. Our General Conditions of Sale apply.
Using the positioner, the instruction manual of the electric
actuator type EA25-250 must be observed.

Intended use

Accessory board Positioner
The positioner can be used with the electric actuators type EA25, EA45, EA120
and EA250, both with the 24V AC/DC as well as the 100-230V AC version. The
board is to be plugged into the housing of the actuator in the provided slots.
Description Technical data
Positioner Inputs with galvanic isolation

1 Function

The positioner controls a user-defined valve position proportional to a given
setpoint value. This can be 0 – 10 V or 4 – 20 mA. Feedback on the valve
position (actual value) is done via the integrated 4 – 20 mA position detection.
All signals can be inverted in any desired combination.
NOTE!
The inputs are galvanically isolated, so the power supply does not have to
be galvanically separated.
Additionally the monitoring card module „Motor current monitoring" is located
on the positioner (left BCD switch). See chapter 6 „Settings motor current
monitoring" for further settings.

2 Assembly of the positioner board

CAUTION!
Disconnect the actuator from the supply voltage.
1. Remove housing cover of the electric actuator (loosen the 4 screws,
open cover).
2. Take the positioner board out of the packaging and check for damages.
CAUTION!
Do not touch the board itself. Electrostatic discharge can damage the
components.
700 278 095
GFDO_6429/ DE EN / 02 (05.2022)
© Georg Fischer Piping Systems Ltd
CH-8201 Schaffhausen/Switzerland
Georg Fischer Piping Systems Ltd CH-8201 Schaffhausen
Phone +41 (0)52 631 30 26 / info.ps@georgfischer.com / www.gfps.com
3.
Code
Ensure that the board sits in the lateral guides and snaps.
199 190 603
4.
5.

3 Connecting the positioner and test functioning

Connect set point 4 – 20 mA (or 0 – 10 V) to terminals of the positioner, see 5
„Terminal assignment". Move actuator in positions OPEN and CLOSE, adjust
positions if necessary: set 4 mA (0 V) for CLOSE and 20 mA (10 V) for OPEN.
For general power supply in the positioner mode one of the power terminals
needs to be energized (1 or 2).
6.

4 Signal configuration

The signal configuration is performed via the right BCD-switch „Mode",
depending on switch position, the following signal configuration can be
achieved:
BCD
0 (factory setting)
1
2
3
4
5
6
7 (only as feedback)
8 (only as feedback)
9
If the feedback is not connected the error LED will show an actual value error. This can be
avoided by placing a resistor (supplied) between terminal 5 and 6 of the positioner.
Remove the resistor to use the feedback.

5 Terminal assignment

The cables are applied as follows via a plug (according to signal configuration):
Insert the board vertical on the backside of the main board onto the red
plug.
CAUTION!
Stick scheme label into the housing cover.
Set signal configuration and if necessary, motor current monitoring (see
chapter 4 „Signal configuration" and 6 „Settings motor current
monitoring").
Put the cover back in place and fasten it with the 4 screws.
Input
4-20 mA
0-10 V
4-20 mA (inverted)
0-10 V (inverted)
4-20 mA
0-10 V
-
-
-
-
Output
4-20 mA
4-20 mA
4-20 mA
4-20 mA
4-20 mA (inverted)
4-20 mA (inverted)
-
4-20 mA
4-20 mA (inverted)
-