Troubleshooting for the MAG.DRIVE L
68
GA 05.130/3.02 - 05/98
Warning Message
on Display
PK communication
Converter does not commu-
nicate with the memory chip
inside of the pump.
max. power
max. frequency
Kin. Buffer
The converter works in
generator mode.
Corrective Action
Check BEARING cable and connectors.
Replace pump.
Check pressures.
Set parameter max. Accel. time to default
1000 s.
Set parameter Normal Operation to default
95 %.
See Section 4.5.3/4.6.3 Settings pump.
Motor current decreases to 0 Amp. The rotor
frequency decreases to the normal operati-
on range via gas friction.
Switch the mains power on. Locate and eli-
minate the cause of the mains failure. The
pump should handle numerous power failu-
res.
Possible Cause
BEARING cable not connected or damaged.
Memory chip inside magnetic bearing car-
tridge is damaged.
Backing or inlet pressure too high.
Process flows too high.
Parameters max. Accel. time or Normal
Operation not set properly.
Frequency exceeds the setpoint for more
than 2 Hz.
Mains power off.
6.1.3 Warning messages
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