Omron SX-F, Инструкция по эксплуатации

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262
Trip conditions, causes and remedial action
Section 12-2
12-2-4 Autoreset Trip
If the maximum number of Trips during Autoreset has been reached, the trip
message hour counter is marked with an “A”.
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.
830 OVERVOLT G
Trp A 345:45:12
Table 33 Trip condition, their possible causes and remedial action
Trip condition
Possible Cause Remedy
Motor I
2
t
“I
2
t”
I
2
t value is exceeded.
-Overload on the motor according to the
programmed I
2
t settings.
-Check on mechanical overload on the motor or the
machinery (bearings, gearboxes, chains, belts, etc.)
-Change the Motor I
2
t Current setting in menu group
[230]
PTC
Motor thermistor (PTC) exceeds maxi-
mum level.
Note
Only valid if option board PTC/
PT100 is used.
-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
Motor PTC
Motor thermistor (PTC) exceeds maxi-
mum level.
Note
Only valid if [237] is enabled.
-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
PT100
Motor PT100 elements exceeds maxi-
mum level.
Note
Only valid if option board PTC/
PT100 is used.
-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
Motor lost
Phase loss or too great imbalance on the
motor phases
-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.
Locked rotor
Torque limit at motor standstill:
-Mechanical blocking of the rotor.
-Check for mechanical problems at the motor or the
machinery connected to the motor
-Set locked rotor alarm to OFF.
Ext trip
External input (DigIn 1-8) active:
- active low function on the input.
-Check the equipment that initiates the external input
-Check the programming of the digital inputs DigIn 1-8
Ext Mot Temp
External input (DigIn 1-8) active:
- active low function on the input.
-Check the equipment that initiates the external input
-Check the programming of the digital inputs DigIn 1-8
Mon MaxAlarm
Max alarm level (overload) has been
reached. -Check the load condition of the machine
-Check the monitor setting in section 11-6, page 215.
Mon MinAlarm
Min alarm level (underload) has been
reached. -Check the load condition of the machine
-Check the monitor setting in section 11-6, page 215.
Comm error Error on serial communication (option)
-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