Lenze EDB9300UES - Manual (Page 169)

Help in the event of errors
164 BA8230
Encoder failure
Cause: The encoder interface detected failure of both track signals for the incremental
encoder.
Remedy: Check the encoder interface wiring
Note:
The message “Encoder failure” also appears after changing the control structure to
“Operation with encoder”. To correct this error, switch the supply voltage off and on
again.
Wire break 4-20mA
Cause: One of the analog demand inputs, main demand :27/:28 or additional demand
:29/:30, is set as the line current interface 4..20 mA and a current of less than 2 mA is
flowing.
Remedy:
Check the wiring. The monitor can be disabled with the parameter “4-20 mA monitor”.
The event is then only recorded in the event log.
Earth fault
Cause: The sum of the momentary values of the three output currents is not zero.
Remedy:
Check the supply cables and the motor itself for an earth fault. In multiple motor drives
with long parallel cables the trigger may respond.
External error
Cause: The level at terminal :12 became LOW.
Remedy:
If you have created an external fault chain at this terminal, check the relevant
releases. Check the terminal strip wiring.
Short circuit
Cause: The momentary value of a phase current reached more than 3.1 times the
effective inverter rated current. A hardware trigger reported this.
Remedy:
Check the wiring of the inverter and the motor. Check the inverter and motor data
were entered correctly.
Short circuit 24V
Cause: The power supply for external wiring at the terminal strip is overloaded or
short-circuited.
Remedy:
Check the wiring at the terminal strip.
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