EN
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
A 25-250 must be observed.
Intended use
Accessory board Fail-safe return unit
The monitoring can be used with the electric actuators type A25, A45,
A120 and A250, 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. The board is also available
without a battery for connecting an emergency external power source
with 24 V DC.
Description
DescriptionDescription
Description
Technical data
Technical dataTechnical data
Technical data
Code
CodeCode
Code
Fail-safe return unit With integrated battery pack 199 190 610
Fail-safe return unit
external
Voltage supply implemented
externally (24 V DC) 199 190 611
1Function
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 CLOS position" or "Move to OP N position" can
be selected.
Fail-safe return unit with battery Fail-safe return unit external
Switch position
Switch position Switch position
Switch position Failsafe
Failsafe Failsafe
Failsafe
return unit
return unitreturn unit
return unit
Function
FunctionFunction
Function
Switch left Actuator moves to OP N (counterclockwise)
Switch right (standard) Actuator moves to CLOS (clockwise)
The batteries are always stored charged. If the battery charges level
drops below 50 %, the actuator L D 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 rror L D displays “L”. The ready to operate signal
stays.
Switch posit
Switch positSwitch posit
Switch position fail
ion failion fail
ion fail-
--
-safe
safe safe
safe
rerturn unit external
rerturn unit externalrerturn unit external
rerturn unit external
Function
FunctionFunction
Function
Switch above Actuator moves to OP N (counterclockwise)
Switch below Actuator moves to CLOS (clockwise)
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 L D on the PCB will light up
green after pressing this button. If no green light occurs do not use this
PCB.
The board must not be plugged into the actuator while the green L D is
The board must not be plugged into the actuator while the green L D is The board must not be plugged into the actuator while the green L D is
The board must not be plugged into the actuator while the green L D is
activated
activatedactivated
activated
on the.
on the.on the.
on the.PCB.
PCB.PCB.
PCB.
L D turns off after 30s, then the board is ready to be installed.
Disconnect the actuator from the supply voltage.
Disconnect the actuator from the supply voltage.Disconnect the actuator from the supply voltage.
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.
Do not touch the board itself. lectrostatic discharge can damage the
Do not touch the board itself. lectrostatic discharge can damage the Do not touch the board itself. lectrostatic discharge can damage the
Do not touch the board itself. lectrostatic discharge can damage the
components.
components.components.
components.
3. Insert board vertical on the backside of the main board onto the red
plug.
nsure that the board sits in the lateral
nsure that the board sits in the lateral nsure that the board sits in the lateral
nsure that the board sits in the lateral guides and snaps.
guides and snaps.guides and snaps.
guides and snaps.
3Test functioning of the fail-safe return unit
Apply power to the actuator and move into position OP N. Remove power
to the actuator. Actuator moves after about 5s to CLOS position (or
reversed, depending on the setting of the switch).
4. Put the cover back in place and fasten it with the 4 screws.
4Error message
An error can triggers the following:
•The 7-segment display on the main board illuminates; see illustration
below.
•The ready-to-operate signal will be off (terminals 5,6 NO contact)
•L D flashes yellow (except in case of power outage)
Assignment of error codes for error messages
If the fail-safe return unit PCB is installed, the following error codes can
be displayed:
rror code
rror coderror code
rror code
Description
DescriptionDescription
Description
Signal „Ready
Signal „ReadySignal „Ready
Signal „Ready-
--
-
to
toto
to-
--
-operate“
operate“operate“
operate“
A re
A reA re
A response
sponsesponse
sponse
L Battery voltage < 50%
Yes Normal operation
A Battery faulty No Normal operation
For further error codes of the main board, see instruction manual of the electric
actuator type A 25-250.
Acknowledge error message
Acknowledge error messageAcknowledge error message
Acknowledge error message
Check the cause of fault, if necessary, carry out relevant maintenance.
The message can be eliminated while the supply voltage is still connected
The message can be eliminated while the supply voltage is still connected The message can be eliminated while the supply voltage is still connected
The message can be eliminated while the supply voltage is still connected
or the actuator is briefly disconnected from the mains voltage (does not
or the actuator is briefly disconnected from the mains voltage (does not or the actuator is briefly disconnected from the mains voltage (does not
or the actuator is briefly disconnected from the mains voltage (does not
work with cycle monitoring).
work with cycle monitoring).work with cycle monitoring).
work with cycle monitoring).
rror can be acknowledged via the „S T“button on the main board.
