32
QS
AVy -HGB
Failure alarms in the keypad display
FAILURE ALARM POSSIBLE CAUSES
Blank display on the keypad Check the cable connection between regulator board and keypad.
BU overload The braking duty cycle is out of the allowed range
Bus loss Failure in the Bus connection (only with interface Bus option card)
Check the Bus connection
EMC compatibility problem, check wiring.
Curr fbk loss Failure in the connection between regulation card and TA transformer.
Check the connection cable on XTA connector.
DSP error Processor program error
Switch off device and restart
If you are unsuccessful: probably an internal fault. Contact your service office.
Enable seqerr Drive is powered up or RESET* with ENABLE input connected to 24V (picked
up) and the Drive is configured to run from the terminals. Refer to CONFIGURA-
TION/Main Commands.
External fault External failure, reported on terminal 15
If the "External fault" message is not used: connection missing between terminals
16 and 18 (reference point) and/or 15 and 19.
If the "External fault" message is used:
- The signal on terminal 15 is missing (15 ... 30 V to terminal 16). With external
voltage supply: reference points must be connected with each other!
Failure supply Fault in voltage supply = the voltages are below the permitted value
CAUTION: switch off voltage before removing terminal strips.
In most cases the cause is in the external wiring. Pull out the plug-in terminal strips
of the regulator card and enter the Reset command. If no other failures are reported,
check your wiring for a short-circuit, in some cases with the cable shielding.
If this has not corrected the fault, try to RESET* once more.
If you are still unsuccessful: probably an internal fault. Contact your service office.
Heatsink ot (For sizes from 22kW ... and higher). Temperature of the heatsink drive too high.
Failure of device fan.
Failure in the IGBT module on power section.
Fast overload current duty cycle.
Heatsink sensor Ambient temperature too high
Failure of device fan
Dirty heatsink
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