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MICROSOFT WORD 2002 89-22091 / VERSION 1 / 13.03 2007
Functional description for control unit ED520
The table below is a problem solver in case of a failure occurs.
Error
Error
message
Cause for error Suggestions
0
• Power on for the first time
• Wear was activated
• Make a new run-in
1
• Stop circuit is broken • Check: Gear on/off, E-stop,
D-stop(stop foil button), lock switch,
door switch, etc.
5
• Memory error (program or data) • Turn the power off and on
• Replace ED520 functionboard
6
• Contactors are defective • Check for water in the DW box
• Check cable connections
• Replace ED400/500 mainboard
7
• Speed control encoder is defective
• Motor defective
• Fuses are missing
• Turn the power off and on
• Activate and deactivate E-stop
• Replace the speed control encoder
unit
• Replace the motor
• Replace the fuses
ED520 can’t be
operated
8
• Spring is broken
• Mechanical instability
• Verification of the mechanical
conditions
2
• Safety edge is not adjusted properly
• Safety edge is activated twice during a
cycle
• Safety edge is activated while the door is
partly open
• Safety edge is defective
• Turn the power off and on
• Adjust the safety edge
• Replace the safety edge
• Activate gear on/off
ED520 is in hold
to run mode
3
• Photocell interrupted
• Photocell defective
• Adjust the photocell
• Check photocell light
• Replace the photocell
Unexpected stops 9
• Anti crushing is activated • Activate the desired function
8 Power failure
In case of a power failure, the control unit reestablishes automatically the limit values when the power is
turned back on.
That is done by the following sequence:
• Turn on the power
• Push the up- or down button
• The door will start and move up for about 0.5 seconds
• After 2 seconds the door leaf will automatically move down until the pneumatic safety edge is
activated
• By the activation of the safety edge the values of the limits is restored
If the anti-crushing device is activated during that up sequence the door will stop and by the next push of
the buttons the door will automatically go down until the pneumatic safety edge is activated and the
limits are restored.
If the door is given a false bottom the following door cycle will activate the anti crushing device and by
the next push of the buttons the door will automatically go down until the pneumatic safety edge is
activated and the limits are restored.
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