Siemens SIMOTRAS 6SG7050 Operating Instructions Manual page 346

Faults / alarms
Alarm
A027 External fault 7
(active in all operating states < o6 if P497=1)
A log. "0" signal has been on terminal 213 for more than 40s.
A028 External fault 8
(active in all operating states ≤ o6 if P498=1)
A log. "0" signal has been on terminal 214 for more than 10s.
A029 Motor overtemperature
(active in all operating states)
Selection via P493=1 or 3 (thermostat at terminals 22 / 23) or
P494=1 or 3 (thermostat at terminals 204 / 205)
When parameter P490.01=1 (KTY84 at terminals 22 / 23) or P490.02=1 (KTY84 at terminals 204 / 205):
The alarm is activated if the motor temperature reaches or exceeds the values set in parameter P492.
When parameter P490.01=2, 3, 4 or 5 (PTC thermistor at terminals 22 / 23) or P490.02=2, 3, 4 or 5 (PTC thermistor at terminals
204 / 205):
The alarm is activated if the motor temperature reaches or exceeds the trip value of the selected PTC.
A031 Speed controller monitoring
(active in operating states of – –, I, II)
The monitor responds when the difference between the connectors selected in P590 and P591 (factory setting: Setpoint/actual
value difference of speed controller) exceeds the limit set in parameter P388 for longer than the time set in parameter P390.
Possible causes of fault
•
Control loop interrupted
•
Controller is not optimized
•
P590 or P591 is not correctly parameterized
A033 Alarm message from free function block FB8
(active in all operating states)
The binector connected via parameter U106 Index.001 is in the log. "1" state
A034 Alarm message from free function block FB9
(active in all operating states)
The binector connected via parameter U107 Index.001 is in the log. "1" state
A035 Drive blocked
(active in operating states of – –, I, II)
The monitoring function responds if the following conditions are fulfilled for longer than the time set in parameter P355:
•
Positive or negative current limit reached
•
Stator current is greater than 1% of converter rated DC current
•
The actual speed value is less than 0.4% of maximum speed
A036 No stator current can flow
(active in operating states of – –, I, II)
This monitoring function responds if the firing angle is at 0° for more than 500 ms and the stator current is less than 1% of the
converter rated DC current.
I 2 t motor monitor has responded
A037
(active in operating states of – –, I, II)
The alarm is activated when the calculated I 2 t value of the motor reaches the value which corresponds to the final temperature
at 100% of permissible continuous motor current (= P113*P100).
A038 Overspeed
(active in operating states of – –, I, II)
The monitoring function responds if the actual speed value (selected in P595) exceeds the positive (P512) or negative (P513)
threshold by 0.5%.
Possible causes
•
Lower current limit has been input
•
Current-controlled operation
•
P512, P513 are set too low
•
Tachometer cable contact fault in operation close to maximum speed
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Description
SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
01.04