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Trip conditions, causes and remedial action
12-2-4 Autoreset Trip
Table 33 Trip condition, their possible causes and remedial action
Trip condition
2
I
2
Motor I
t
-Overload on the motor according to the
2
"I
t"
programmed I
Motor thermistor (PTC) exceeds maxi-
mum level.
PTC
Note
Motor thermistor (PTC) exceeds maxi-
mum level.
Motor PTC
Note
Motor PT100 elements exceeds maxi-
mum level.
PT100
Note
Phase loss or too great imbalance on the
Motor lost
motor phases
Torque limit at motor standstill:
Locked rotor
-Mechanical blocking of the rotor.
External input (DigIn 1-8) active:
Ext trip
- active low function on the input.
External input (DigIn 1-8) active:
Ext Mot Temp
- active low function on the input.
Max alarm level (overload) has been
Mon MaxAlarm
reached.
Min alarm level (underload) has been
Mon MinAlarm
reached.
Comm error
Error on serial communication (option)
262
If the maximum number of Trips during Autoreset has been reached, the trip
message hour counter is marked with an "A".
830 OVERVOLT G
Trp A 345:45:12
Fig. 118 Autoreset trip
Fig. 118 shows the 3rd trip memory menu [830]: Overvoltage G trip after the
maximum Autoreset attempts took place after 345 hours, 45 minutes and 12
seconds of run time.
Possible Cause
t value is exceeded.
2
t settings.
Only valid if option board PTC/
PT100 is used.
Only valid if [237] is enabled.
Only valid if option board PTC/
PT100 is used.
Remedy
-Check on mechanical overload on the motor or the
machinery (bearings, gearboxes, chains, belts, etc.)
2
-Change the Motor I
t Current setting in menu group
[230]
-Check on mechanical overload on the motor or the
machinery (bearings, gearboxes, chains, belts, etc.)
-Check the motor cooling system.
-Self-cooled motor at low speed, too high load.
-Set PTC, menu [234] to OFF
-Check on mechanical overload on the motor or the
machinery (bearings, gearboxes, chains, belts, etc.)
-Check the motor cooling system.
-Self-cooled motor at low speed, too high load.
-Set PTC, menu [237] to OFF
-Check on mechanical overload on the motor or the
machinery (bearings, gearboxes, chains, belts, etc.)
-Check the motor cooling system.
-Self-cooled motor at low speed, too high load.
-Set PT100 to OFF
-Check the motor voltage on all phases.
-Check for loose or poor motor cable connections
-If all connections are OK, contact your supplier
-Set motor lost alarm to OFF.
-Check for mechanical problems at the motor or the
machinery connected to the motor
-Set locked rotor alarm to OFF.
-Check the equipment that initiates the external input
-Check the programming of the digital inputs DigIn 1-8
-Check the equipment that initiates the external input
-Check the programming of the digital inputs DigIn 1-8
-Check the load condition of the machine
-Check the monitor setting in section 11-6, page 215.
-Check the load condition of the machine
-Check the monitor setting in section 11-6, page 215.
-Check cables and connection of the serial communi-
cation.
-Check all settings with regard to the serial communi-
cation
-Restart the equipment including the VSD
Section 12-2
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