Technical Data Sheet FSC-UFC24
Page 17 of 18
November 2017
Technical changes reserved
www.smtec-ag.ch
The FSC-UFC24 is equipped with an actuator run time monitoring function. This function monitors the time
required by the actuator from leaving of the one and reaching of the other end switch. If the actuator does
not reach the other end switch in the specified time an error message is sent.
The default value for the actuator run time is 90 seconds. This can be adapted via Modbus or BACnet from
0…360 seconds.
The FSC-UFC24 offers a ‘Full Auto Test’ function. This can be controlled through the Modbus or BACnet
controller.
Basis of the Functionality
Basis for this function is the run time monitoring of the actuator.
Fire Damper
To start the full auto test functionality, the corresponding bus-register hast to be activated via bus. By starting
the full auto test, the timer of the run time monitoring starts to count the time and the fire damper actuator is
closing (spring) and remains in the closed position until the timer of the set running time has reached the set
time. Then the actuator will open again automatically until the end switch has been reached. The timer of the
run time monitoring starts to count again as soon as the command ‘open’ has been sent. Once the timer of
the set running time has reached the set time, the FSC-UFC24 will go back into normal operation mode and a
feedback ”full auto test ok” is activated. If one of the end switches is not reached within the defined running
time, an error message is activated.
Smoke Extraction Damper
To start the full auto test functionality, the corresponding bus-register has to be activated via bus. By starting
the full auto test, the timer of the run time monitoring starts to count the time and the smoke extraction
damper actuator is moving to the opposite direction and remains in that position until the timer of the
set running time has reached the set time. Then the actuator will automatically move back to the original
position until the end switch has been reached. The timer of the run time monitoring starts to count again as
soon as the command ‘opposite direction’ has been sent. Once the timer of the set running time has reached
the set time, the FSC-UFC24 will go back into normal operation mode and a feedback ”full auto test ok” is
activated. If one of the end switches is not reached within the defined running time, an error message is
activated.
Run Time Monitoring of Actuator
Full Auto Test Application
