GFA TS981 - Page 50

50
Fault of door movement
Cause of the fault Fault correction
F
.
Display alternates between F and number
5.5
Fault of digital limit switch (DES).
Check the limit switch plug for firm seating.
Check the connection cable visually for damage.
Check the limit switch by replacing it with a properly
functioning DES.
5.6
Fault in door movement.
The door mechanism is stiff or
blocked.
Check door drive unit for stalling.
WARNING! Danger of the door dropping!
Do not release stalling when using a door drive unit with a
safety brake! Stalling may indicate a catch incident. Replace
the door drive unit.
Check the door mechanism for da
mage.
The final limit position OPEN is not
reached.
Check final limit position OPEN. When the door hits a cushion,
then correct the final limit position.
A supply phase is missing.
Check the mains supply of the door control. Establish the
correct power supply.
Brake does not release.
Check the brake and rectifier.
The limit switch is not driven.
Check the limit switch turn while the door is moving.
The running time is set incorrectly.
Only for FI-drive: frequency inverter
is not detected.
Check and correct the voltage supply of the door control.
Correct the running time (menu item 3.3)
For single-phase FI drives:
Check neutral on the mains supply.
Check the transformer bridge at the AC power connector of
the door control.
5.7
The rotating field of the supply
network has changed.
Establish a clockwise rotating field at the mains supply.
5.8
Incorrect door movement from idle
state.
Drive units with brake release:
Check whether the brake release lever has been activated.
Warning! Danger of the door dropping!
Only qualified personnel may operate the brake release.
Follow the instructions for the drive unit.
Drive units with gear release:
Check whether the gearbox is released and the door has been
moved by hand. Engage the gearbox and switch the door
control off and on.
Drive units with magnetic brake: brake without function. Check
whether the brake is supplied with voltage.
5.9
The door drive unit does not follow
the given travel direction.
The brake does not hold
the door: check the brake and rectifier
for defects, wear or moisture damage.
Measure the voltage at the motor plug and check its firm
seating.
Check the screws on the motor connection.