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 monitoring, the instruction manual of the electric
actuator type EA 25-250 must be observed.
Intended use
Accessory board Fail-safe return unit
The monitoring 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.
The fail-safe return unit already includes the required battery; no external
wiring is necessary. (If required, the board is available without battery for
connecting an emergency external power source with 24 V DC.)
Description
Technical data
Code
Fail-safe return
unit
With integrated battery pack 199 190 601
Fail-safe return
unit external
Voltage supply implemented
externally (24 V DC)
199 190 604
External
Integrated
1
Function
In case of a failure of the supply voltage, the battery is electronically switched
on automatically after 5 s. With the selector switch on the board, the functions
"Move to CLOSE position" or "Move to OPEN position" can be selected.
Fail-safe return unit
Fail-safe return unit external
with battery
Switch position
Function
Switch left
Actuator moves to OPEN (counterclockwise)
Switch right (standard)
Actuator moves to CLOSE (clockwise)
The batteries are always stored charged. If the battery charge level drops
below 50 %, the actuator LED flashes yellow and the charge cycle starts. Once
U
Batt
rises above 50 %, the flashing stops.
During the charge cycle, the actuator can be operated normally. When
charging the internal Error LED displays “L”. The ready to operate signal stays.
2
Assembly of the fail-safe return unit board
The push button on the right side of the PCB is used to check the charge status
of the batteries. If status is “ok” the LED on the PCB will light up green after
pressing this button. If no green light occurs do not use this PCB.
CAUTION!
The board must not be plugged into the actuator while the green LED is
activated on the.PCB.
LED turns off after 30s, then the board is ready to be installed.
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 fail-safe return unit board out of the packaging and check for
damages.
CAUTION!
Do not touch the board itself. Electrostatic discharge can damage the
components.
3.
Insert board vertical on the backside of the main board onto the red plug.
CAUTION!
Ensure that the board sits in the lateral guides and snaps.
Fail-safe return unit with battery Fail-safe return unit external
Electric actuators type EA25-250:
Fail-safe return unit
Instruction Manual
700278093
GFDO_6428 / DE EN / 04 (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 / [email protected] / www.gfps.com
