Siemens Simovert 6SE70 Series Operating Instructions Manual page 209

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09.02
Fault Fault description
No.
F048 RAM Fault
RAM defective
Software-based checking of the
functionality of the RAM chips on the CUR
module
F049 Watchdog!
Watchdog timer has triggered a Reset
An internal hardware counter in the
microprocessor checks to see whether the
program for calculating the firing pulses is
executed at least about every 400 ms (on
average, it is executed every 2.7 to 3.3
ms). If this is not the case, the counter
triggers a Reset. F047 then appears.
F060 No MLFB
P070=0
F061 WrongPar Set
Parameter wrong or not yet set
Note about fault value 4, 5:
The U d reduction is then considered to be
"selected" if while the basic setting
P571.i001 ≠ 0 active or while the standby
setting P571.i002 ≠ 0 active, or if P323=1.
Autotransformer connected incorrectly
F065 SST1 Telegr.
USS telegram to SST1 failed
Active from the first reception of a valid
protocol in all operating states
Following receipt of a valid telegram, no
further telegrams were received for longer
than the time set with parameter
P687.i001
Siemens AG 6SE7087-6AK85-1AA0
Rectifier/Regenerating Unit Operating Instructions
AoteWell LTD
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Fault Meaning
value
- -
- -
- -
3 P141 (Rectifier Induct.), P143
(Inverter Induct.) or P144 (C of DC
link) are = 0.00
4 P318 is too large (with U
selected) or P776 is set too small
to facilitate constant regenerative
operation with continuous DC link
current for the current ratio of
rectifier/regenerating supply
voltage.
5 P318 is too large (with U
selected) to facilitate constant
regenerative operation with
pulsating DC link current for the
current ratio of
rectifier/regenerating supply
voltage.
6
U
Supply,
U
7 P076 ≠ 0xx UND Unit is an E unit
(P070 ≥ 101)
8 P076 = 10x, 20x or 21x
(i.e. more parallel recovery power
sections are parameterized than
parallel feed power sections)
- -
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reduction
d
reduction
d
1
regenerati ng
<
1,1
Supply, rectifier
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Fault and Alarm Messages
Possible causes
Countermeasures
- RAM defective (replace the CUR
module)
- CUR module defective
- Excessive interference (e.g. by
contactors without RC elements,
unshielded cables, faulty
shielding connections)
- After acknowledging in
BOOTSTRAP, enter a suitable
parameter value for the unit with
P070 MLFB (6SEE70..) (only
possible with the corresponding
access stages of the two access
parameters; see Section 4.3.9.2).
- Carry out circuit identification
(P052 = 21)
As the inverter step limit P776 with
respect to the commutation
duration (depending on u value of
K
the network) has an upper limit,
P318 has to be set lower, or U
reduction has to be activated via
P571if it is not currently active.
The following must apply:
U
Supply, reg.
≤
P318 100% cosP776
U
Supply, rect.
or.
if operating without U reduction:
d
U
Supply, reg.
≤
100% 100% cosP776
U
Supply, rect.
P318 has to be set lower, or U
reduction has to be activated via
P571if it is not currently active.
The following must apply:
U
supply, regenerati ng
≤
P318 87
U
Supply, rectifier
or
if operating without U reduction:
d
U
Supply, regenerati ng
≤
100% 8 , 7
U
Supply, rectifier
- Set P076 correctly
- Set P076 correctly
- Cable break
- Fault in the USS master
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d
d
, 62 %
62 %
7-5