Lenze 9212, Operating Instructions Manual, Page: 81 / 86

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EEr External TRIP
The voltage at the TRIP-SET input X5 terminal 26 must be < 5V.
Otherwise, the external TRIP will be set.
SD2 Wire breakage resolver or resolver cable
The electrical resistance of the resolver cables is monitored. If the
line resistance is too high due to a line breakage or an interruption
in the resolver, fault SD2 "wire breakage" is displayed.
U15 Supply voltage interrupted
Check the Vcc-15V connection X5 terminal 20 for external short
circuit.
CCr System fault
Programme sequence error in the micro processor. A system fault
occurs with interference in the electronics caused by incorrect
screening or non-screened cables or due to ground or earth loops
in the wiring. The fault may also occur after short mains
interruptions (t < 1 min) if the controller was switched off while there
was another non-acknowledged fault.
Pr Parameter loss
Program sequence error in the microprocessor which is caused by
interference in the electronics due to incorrect screening or non-
screened cables or ground or earth current loops in the wiring. The
interference resulted the loss of the stored parameters. After TRIP
reset and before enabling the controller again, a new parameter
setting is required.
CEO
Communication error with the automation module. The error occurs
when the automation module is activated by C370-1, but the
communication is interrupted.
UEr Unknown fault
This fault occurs in the fault memory if the hardware monitoring
sets TRIP, however, the software cannot identify the fault (e.g. in
case of interrupted supply voltage.