59
Operation after a power failure
In the event of a power failure, the stored door data is retained.
However, the door must then be allowed to complete one full
opening cycle ("OPEN" reference travel cycle) with flashing
operator lighting. During this reference travel cycle it is impor-
tant that the belt carrier is engaged in the carriage. If this is not
the case, the belt carrier will travel into the drive wheel, and the
operator will then register this as its reference point.
If this should ever happen, allow the operator to travel in the
"CLOSE" direction until you can engage the belt carrier in the
carriage. After disconnecting the operator from the mains,
repeat the "OPEN" reference travel cycle.
Normal door travel cycles:
The operator responds exclusively to sequential
impulse control:
1st impulse: door opens
2nd impulse: door stops
3rd impulse: door closes
4th impulse: door stops
5th impulse: door opens etc.
Figure 22.1
"CLOSE" potentiometer: maximum closing force.
This potentiometer allows you to set the maximum closing force
that can be achieved. The factory pre-setting is the medium
setting.
Increasing the force in the clockwise direction is only necessary
for extremely sluggish doors.
Figure 22.2
"OPEN" potentiometer: maximum opening force.
This potentiometer allows you to set the maximum opening
force that can be achieved. The factory pre-setting is the medium
setting.
Increasing the force in the clockwise direction is only necessary
for extremely sluggish doors.
Diagnosis LED: Error and status display
The diagnosis LED is located on the control unit circuit board
(see fig. 12.1).
In its normal state the LED glows permanently and goes out
when an impulse command is given.
LED display: flashes slowly
Possible cause: 1. STOP circuit interrupted
2. STOP circuit open
Remedy: 1. Check wiring between terminals 4
and 5
2. Close STOP switch
LED display: flashes 2x in 4 secs.
Possible cause: Closing safeguard is/was activated
1. 8.2 k resistor inserted between
terminals 6 and 7?
2. Photocell or closing edge safety
device interrupted or actuated
Remedy: 1. Connect 8.2 k resistor to
terminals 6 and 7.
2. Check photocell or closing edge
safety device, if necessary replace.
LED display: flashes 3x in 5 secs.
Possible cause: 1. Closing force limit
Remedy: 1. Remove obstruction, if necessary
delete door data and repeat proce-
dure for putting into operation.
LED display: flashes 5x in 7 secs.
Possible cause: 1. Opening force limit
2. Door spring broken
Remedy: 1. Remove obstruction, if necessary
delete door data and repeat
procedure for putting into operation.
2. Replace door springs.
LED display: flashes 6x in 8 secs.
Possible cause: 1. Operator or installation faulty
Remedy: 1. Delete door data, repeat proce-
dure for putting into operation.
Check wiring, if necessary
replace operator.
LED display: flashes 7x in 9 secs.
Possible cause: 1. Operator has not yet been "taught"
Remedy: 1. Carry out "CLOSE" learn travel
cycle
LED display: flashes 8x in 10 secs.
Possible cause: 1. Operator has not yet carried out
any "OPEN" reference travel cycle
Remedy: 1. Carry out "OPEN" reference travel
cycle
ENGLISH
