05.2006 Faults and Alarms
Siemens AG 6SE7087-2JD60
SIMOVERT MASTERDRIVES Operating Instructions 14-7
Number / Fault Cause Counter-measure
F051
Speed encoder
Digital tachometer or analog tachometer
sensing are faulty
Check the parameters:
- P130 Src SpdActV
- P151 Pulse #
- P138 AnalogTachScale
- P109 Motor #PolePairs
The product of P109 and P138 must be
smaller than 19200. Check or replace
tachometer. Check connection to tachometer.
- Replace CU (-A10), or replace the unit
(Compact PLUS type)
F052
n-Cntr.Input
Control track input (-X103/27, or -X104/27
Compact PLUS) is not high:
- Tachometer line broken
- Tachometer fault
The fault input on the TSY was activated.
Unselect tachometer with control track (P130
select motor encoder)
Check control track connection (-X103/27, or
X104/27 Compact PLUS)
Exchange TSY
F053
Tachometer dn/dt
The permissible change value of the speed
encoder signal P215 dn(act,perm) has been
doubly exceeded.
Check tachometer cables for interruptions.
Check earthing of tachometer shield.
- The shield must be connected both at the
motor and the converter side.
- The encoder cable must not be interrupted.
- The encoder cable must not be laid together
with the power cables.
- Only recommended encoders should be
used.
- In the case of a signal fault, the DT1 board
may have to be used. If necessary, change
P215
- With P806
(observe parameter description) it is possible
during operation to switch over to encoder-free
operation.
F054
Sensor board
initialization fault
A fault has occurred during initialization of the
encoder board.
Fault value r949
1. Board code incorrect
2. TSY not compatible
3. SBP not compatible
7. Board double
20: TSY board double
60: Internal error
F056
SIMOLINK telegram
failure
Communication on the SIMOLINK ring is
disturbed.
- Check the fiber-optic cable ring
- Check whether an SLB in the ring is without
voltage
- Check whether an SLB in the ring is faulty
- Check P741 (SLB TlgOFF)
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