Fault and Alarm Messages
09.02
7-8
Siemens AG 6SE7087-6AK85-1AA0
Rectifier/Regenerating Unit Operating Instructions
Fault
No.
Fault description
Fault
value
Meaning
Possible causes
Countermeasures
F103 Thy/Grnd
Flt
Fault when conducting the
thyristor/ground-fault test
This fault message can only occur if the
thyristor/ground-fault test is activated with
parameters P353 / P354.
A software check is made to see whether
all thyristors have blocking capability,
whether they can be fired, and whether
there is a ground fault
Identification of the firing lines and the
associated thyristors should always be
made with the aid of the relevant wiring
diagram (see Section 3-5 "Power
terminals").
1
2
3
4
5
6
Short-circuit of thyristor V11 or V24
Short-circuit of thyristor V12 or V25
Short-circuit of thyristor V13 or V26
Short-circuit of thyristor V14 or V21
Short-circuit of thyristor V15 or V22
Short-circuit of thyristor V16 or V23
- Thyristor defective
- Thyristor externally shorted
(e.g. by ground fault in grounded
system and ground fault in the
motor)
- Connection to DC link interrupted
(e.g. fuse blown)
Possible reasons for the thyristor
being defective:
- Interruption in the RC circuit
- Converter and compensation
control not optimized (excessive
current peaks)
- Cooling not guaranteed (e.g. fan
not running, ambient temperature
too high, to little air intake, heat
sink severely contaminated)
- Excessive voltage peaks in
supply system
8
Ground fault in DC link or in motor /
rectifier fuse defective
- Ground fault
- Connection to DC link interrupted
(e.g. fuse blown)
9
I = 0 - Message defective
- CUR module defect
11
12
13
14
15
16
Thyristor cannot be fired (X11)
Thyristor cannot be fired (X12)
Thyristor cannot be fired (X13)
Thyristor cannot be fired (X14)
Thyristor cannot be fired (X15)
Thyristor cannot be fired (X16)
- Firing pulse line to relevant
thyristor interrupted
- Ribbon cable X109 not correctly
plugged in or interrupted (and
ribbon cable X27 in the case of
power section connected in
parallel)
- Defect in electronics and/or
power interface module
- internal interruption on the gate
line in the thyristor module
17
2 or more thyristors of the rectifier
bridge cannot be fired
- Connection to DC link interrupted
(e.g. fuse blown)
- As under 11 to 16
21
22
23
24
25
26
Thyristor cannot be fired (X21)
Thyristor cannot be fired (X22)
Thyristor cannot be fired (X23)
Thyristor cannot be fired (X24)
Thyristor cannot be fired (X25)
Thyristor cannot be fired (X26)
- As under 11 to 16
27
2 or more thyristors of the
regenerative bridge cannot be fired
- Parameter P076 wrong
- As under 11 to 16
31
32
33
34
35
36
Thyristor cannot block
(gate X11 or X21)
Thyristor cannot block
(gate X12 or X22)
Thyristor cannot block
(gate X13 or X23)
Thyristor cannot block
(gate X14 or X24)
Thyristor cannot block
(gate X15 or X25)
Thyristor cannot block
(gate X16 or X26)
- As under 1 to 6
F116
to
F150
Fault on the intelligent I/O module
See User's Manual of the TB module
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