Fault and Alarm Messages
09.02
7-4
Siemens AG 6SE7087-6AK85-1AA0
Rectifier/Regenerating Unit Operating Instructions
Fault
No.
Fault description
Fault
value
Meaning
Possible causes
Countermeasures
F033
DC Bus Open
The monitor responds if the following
conditions obtain for longer than 30sec in
the "RUN“ status:
- DC link current <1%
-
Output voltage of the thyristor bridge
oscillates severely
-
-
- Rectifier fuse defective
- No inverter connected
F034 Par
PwrSectF
Fault in power sections connected in
parallel
At least one parallel power section is
connected, has been selected with
parameter P076 and reports the fault
message "Current asymmetry between
rectifier/regenerating unit and parallel
power section".
1
Current asymmetry (overcurrent or
undercurrent in the parallel power
section compared with the current
in the rectifier/regenerating unit)
|I
basic
| - |I
parallel
| > 21 %
|I
parallel
| - |I
basic
| > 14 %
for 300 ms
- One of the thyristors is not firing
- Different current ripple in the
rectifier/regenerating unit and
parallel power section due to
different commutating reactors
- Cable connection between the
rectifier/regenerating unit and a
parallel power section is
interrupted or faulted
F035
Ext Fault 1
External fault 1
A parameter-programmable fault input has
become active.
-
-
- There is an "External fault 1"
signal at the selected binary input
(P575/source for "Ext. fault 1")
- The line to the corresponding
binary input is interrupted.
F036
Ext Fault 2
External fault 2
Active in the "RUN“ when the pre-charging
time (P329) + 3s (200 ms for SW<3.0) has
elapsed.
A parameter-programmable fault input has
been activated.
-
-
- There is an "External fault 2"
signal at the selected binary input
(P586/source for "Ext. fault 2")
- The line to the corresponding
binary input is interrupted..
F038
Ext Fault 3
External fault 3
A parameter-programmable fault input has
been activated.
-
-
- There is an "External fault 3"
signal at the selected binary input
(P573/source for "Ext. fault 3")
- The line to the corresponding
binary input is interrupted..
F041 EEprom-Fault
Parameter range fault
Software monitoring of the permissible
value range of the parameters and the
functionality of the EEPROM chip
(permanent memory) on electronic module
CUR (type: X28C64, 8192 bytes)
1
"Parameter value outside the
permissible range".
- Software has been replaced
- Excessive interference (e.g. by
contactors without RC elements,
unshielded cables, faulty
shielding connections ...)
- Countermeasures:
Acknowledge the fault
Check EMC measures
Set MLFB (Section 4.3.9.2)
Establish factory setting (Section
4.3.9.1)
Repeat system start-up (Section
4.2.3)
2
"EEPROM location defective"
- Hardware defect
- Severe EMC noise
- Countermeasures:
Replace the CUR module
Check EMC measures.
3
"EEPROM fault"
- As for 1
F042 Buffer
OFlow
Internal buffer overflow
Software monitoring of various software
buffers.
-
-
- CUR module faulted
- Excessive interference (e.g. by
contactors without RC elements,
unshielded cables, faulty
shielding connections ...)
F047 Int
Fault
Non-permissible microprocessor status
The microprocessor is monitored by
internal hardware for non-permissible
states
-
-
- CUR module faulted
- Excessive interference (e.g. by
contactors without RC elements,
unshielded cables, faulty
shielding connections ...)
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