Siemens 6RA7086-6KS22 Operating Instructions Manual page 440

Faults / Alarms
Fault
No.
Cause as a function of fault value
(r047.001, r949.001 or r949.009 with acknowledged error)
F005 Fault in the field circuit
(active in operating states of ≤ o5)
The line voltage RMS value calculated from the area of each network half-wave (rectification average value * peak factor) must
be greater than the response value for phase failure monitoring
P078.002 ∗
The distance between two identical network zero passages of the voltage for the field converter must not exceed 450 degrees.
The actual field current K0265 equals < 50% of the required field current setpoint K0268 for more than 500ms. This monitoring
function is effective only if the field current setpoint corresponds to >2% of the converter rated field current.
[In SW 1.9 and later, the percentage (50%) and time (500ms) can be altered in P396 and P397 respectively]
If one of the fault conditions described persists in operation (or ≤ o4) for longer than the "restart" time set in P086, the fault
message is output.
After the converter is switched on, it waits in operating state o5 for a period not exceeding the setting in P089 for the field supply
voltage or sufficiently high field current before this fault message is activated.
Monitoring for timeout as the field decays or builds up after initiation of field reversal (fault values 6 and 7) is not implemented
until SW 1.7 and later.
Possible fault causes
♦ Threshold for phase failure (P353) set incorrectly
♦ Undervoltage / overvoltage threshold (P351, P352) set incorrectly
♦ Field phase failed
♦ Line contactor opened during operation
♦ Fuse blown in the field circuit
♦ Field current controller and/or field current precontrol not optimized or badly optimized (check P112, P253 to P256; possibly
execute current controller optimization)
♦ Check P396 (field current monitoring threshold) and P397 (field current monitoring time)
♦ If the fault value is 6: Offset fault in the actual field current value sensing, relevant parameter: P825.i01-i03 (Offset depends
on P076.i02) or P394, P395 (Threshold and hysteresis for message I_field < I_field_min) must be checked
♦ If the fault value is 7: Circuit for the "new" field direction is interrupted (e.g. because the contactor for "new" field direction
does not pick up), P398, P399 (Threshold and hysteresis for message I_field < I_field_x) must be checked
Fault value:
1 Voltage failure occurred in the field supply (terminals 3U1 and 3W1) (if P086 = 0)
2 Delay time according to P089 elapsed in state o5.1. Wait until the voltage on the field power section is inside the tolerance
range (P351, P352, P353).
3 Delay time according to P089 elapsed in state o5.0
(waiting until I field act (K0265) is > 50% of the instantaneous field current setpoint K0268)
[threshold settable in P396 as of SW 1.9]
After P086 > 0 has elapsed (time for automatic restart) in operating state ≤ o4:
4
Voltage failure in the field supply or I field act (K0265) < 50% I field set (K0268) for longer than 500 ms
[settable via P396 and P397 as of SW 1.9]
When P086 = 0 (no automatic restart) in operating state ≤ o4:
5
I field act (K0265) < 50% I field set (K0268) for longer than 500 ms
[settable via P396 and P397 as of SW 1.9]
If field reduction before field reversal, I_field ≤ I_field_min (P394) is not reached within 30 s
6
7 If field build-up after field reversal, I_field > I_field_x (P398) is not reached within 30 s
F006 Undervoltage
(active in operating states of ≤ o4)
The voltage at terminals 1U1, 1V1 or 1W1 and 3U1, 3W1 is lower than the response threshold for longer than the "restart time"
set in P086.
Response threshold for armature supply voltage:
∗
P078.001
Response threshold for field supply voltage:
∗
P078.002
Possible fault causes
♦ Line undervoltage
♦ Monitoring values set too sensitively or incorrectly (P351, P078)
10-4
P353
100%
P351
+
(1
)
100%
P351
+
(1 )
100%
Description
Further information (r047.002 to r047.016)
SIMOREG DC Master
05.05
SIEMENS AG 6RX1700-0AD76
Operating Instructions