Lenze EDB9300UES - Manual (Page 168)

Help in the event of errors
BA8230 163
6.5 Error log Errors basically cause the unit to shut down. Pulses are disabled immediately and the
main contactor (DC) is de-energised. When the error is corrected, the unit can only be
restarted after an acknowledgement is given. For this, if the AWE auto restart facility
is not switched on, a positive flank is required at terminal :5 “ON”, i.e. by pressing the
ON switch.
Each error is recorded in the error log with the time (hours, minutes, seconds,
milliseconds). Max. 32 errors are recorded in the log. If further errors occur, the oldest
error in each case is erased.
The contents of the error log can be examined by entering the error number on the
menu
08 DIAGNOSTICS
• OUTPUT ERROR NO:
The memory locations in the error log are counted through from 1 to 32. Location 32
contains the most recent error and location 1 contains the oldest.
6.6 Errors Errors cause the inverter to shut down and must be acknowledged.
Summary of errors:
Drive blocked Charging not successful
Field bus failure Encoder failure
Wire break 4-20mA Earth fault
External error DC contactor energised
Short circuit Short circuit 24V
Short circuit UCE Plug fault
Overload >60 s Overspeed
DC link overvoltage Link overvoltage
Overcurrent Heatsink overtemperature
Motor overtemperature UCE power dump
Drive blocked
Cause: If the speed control is at its limit for 2 s and the speed actual value is zero, this
error is triggered.
Remedy: Check whether the drive is blocked or is heavy to start. Check the current
limit settings responsible for limiting the speed control.
Note:
The monitor can be disabled with the parameter “Blocking monitor”. This can be
necessary if you want to apply torque at a standstill in the torque control structure.
Charging not successful
Cause: Link charging was interrupted because the voltage required on the link was
not reached within the specified time. Monitoring is in two stages: 40 V must be
exceeded 100 ms after starting charging and 470 V must be reached 3 s after starting
charging.
Remedy:
Check the mains fuses and phase voltages. A phase could have failed. Perhaps the
inverter was stored for too long and the link capacitors require re-forming.
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