Lenze EMB934x - Manual (Page 131)

Troubleshooting and fault elimination
Fault messages
7
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131 EDBMB9340 DE/EN/FR 12.0
7.2 Fault messages
The type of fault is indicated via the status of terminals A1 and A2, if the external voltage
supply is not interrupted during faulty operation:
A1 = LOW collective error message (all faults)
A2 = LOW faults of the supply system.
)
Note!
ƒ Response time of the fault messages in case of mains errors: < 20 ms.
ƒ Reaction time of reconnection (switch on): < 0.5s.
Terminal X2/ Operating behaviour Possible cause Remedy Fault reset
A1 A2
HIGH HIGH Supply and feedback
operation possible; no fault
is active
LOW HIGH Supply operation is still
possible, feedback
operation is inhibited Overtemperature Automatically after cool
down of the regenerative
power supply module
l Ambient temperature
too high l Reduce ambient
temperature
l Overload of the
regenerative power
supply module l Check dimensioning, if
necessary, use
additional braking units
l Heatsink dirty l Clean heatsink
Feedback operation is
inhibited Overvoltage in the DC bus,
regenerative energy
exceeds the regenerative
power Check the dimensioning of
the drive system Automatically, if the
DC−bus voltage is within
the permissible range
LOW LOW Operation not possible Mains voltage
< 320 V or > 528 V Check mains voltage;
For isolated operation with
generator: Check
dimensioning of the
generator Automatically, if the mains
voltage is within the
permissible range
All−pole mains failure Switch on the mains
Supply operation is still
possible, feedback
operation is inhibited Mains error or connection
error detected by mains
synchronisation Check connection for
in−phase wiring Automatically, with
in−phase wiring
Mains frequency
< 48 Hz or > 62 Hz Check mains frequency;
For isolated operation with
generator: Check
dimensioning of the
generator Automatically, if the mains
voltage is within the
permissible range
Single pole phase failure
L1, L2 or L3 by defective
fuse Replace fuse when no
voltage is applied After replacing the fuse
and reconnection