02.00 Faults / Alarms
SIEMENS AG 6RX1700-0AD76 10-25
SIMOREG DC Master Operating Instructions
Alarm
No.
Description
A026 Poor bearing condition
(active in all operating states)
When parameter P496=1 (bearing condition sensing):
Alarm in response to log. “0” signal (longer than 2s) at terminal 212
Possible causes
• Encoder for bearing condition has responded
A027 Air flow monitoring
(active in operating states of < o6)
When parameter P497=1 (air flow monitoring):
Alarm in response to log. “0” signal (longer than 40s) at terminal 213
Possible causes
• Encoder for fan monitoring has responded
• Interruption in encoder cable
A028 Motor overtemperature
(active in all operating states)
When parameter P498=1 (thermostat connected):
Alarm in response to log. “0” signal (longer than 10s) at terminal 214
Possible causes
• Thermostat for monitoring motor temperature has responded
• Interruption in encoder cable
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
• 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 torque or armature current limit reached
• Armature current is greater than 1% of converter rated armature DC current
• The actual speed value is less than 0.4% of maximum speed
A036 No armature current can flow
(active in operating states of – –, I, II)
This monitoring function responds if the armature firing angle is at the rectifier stability limit for more than 500 ms and the
armature current is less than 1% of the converter rated armature DC current.
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