2
Created 11.08.2014:
Approved 11.08.2014:
Bodo Kiesewalter
2. Checklist in case of failure Drive unit C720 / 721
Error analysis by using the status LEDs
No LED active
Check the fuse of the steering, if necessary replace
it.
LED BUS is blinking or off
LED is blinking: Photocells are working
LED is off: Photocells doesn’t work, check wire
connection, if necessary replace the photocell.
LED FSW OP is off
Safety strip „OPEN“ doesn’t work. Check
OSE-S unit (Connection box guiding post)
(Status LED must be off) if status LED is
active, check light beam sensors of the
safety edge, if necessary replace the OSE-S
unit.
LED FSW CL is off
Safety strip „close“ doesn’t work. Check
OSE-S unit (Connection box guiding post)
(Status LED must be off) if status LED is
active, check light beam sensors of the
safety edge, if necessary replace the OSE-S
unit.
LED Stop is off
Check the wire connection of the
connection bar J3. Short circuit bridge must
be connected from 4 to 6.
LED status is ok, but motor doesn’t work
The drive is unlocked, the wing can move
with hand, drive must be locked.
Drive wants to start, wing does not move
Unlock the drive, if necessary disassembling
of the drive, move the wing with hand.
Wing must be movable without resistance
the whole distance in both directions.
checked
