YASKAWA P7 User Manual page 149

Digital
Operator Display
Cooling Fin/Cooling Fin Fan Overheat
The temperature of the Drive cooling fin
OH1
exceeded the temperature programmed in
Heatsnk MAX Temp
parameter L8-02
Drive Internal Cooling Fan
Motor Overheating Alarm
OH3
The Drive stops or continues operation
Motor Overheat 1
according to the setting of L1-03.
Motor Overheating Fault
OH4
The Drive stops operation according to the
Motor Overheat 2
setting of L1-04.
Motor Overload
OL1
Designed to protect the motor.
Motor Overloaded
Fully adjustable from parameter E2-01
OL2
Drive Overload
Inv Overloaded
Designed to protect the Drive
Overtorque Detection 1
OL3
Drive output current > L6-02 for more than
Overtorque Det 1
the time set in L6-03
Digital Operator Connection Fault
OPR
The Drive will stop if the digital operator is
Oper Disconnect removed when the Drive is commanded to
run through the digital operator
Table 6.1 Fault Displays and Processing
Description
Diagnostic & Troubleshooting 6 - 5
Cause
Cooling fan(s) are not
working, high ambient
temperature, a heat source is
too close to the Drive
Overheating of motor as
measured by motor thermistor
Overheating of motor as
measured by motor thermistor
The load is too large. The
cycle time is too short at the
accel/decel time
The voltage of the V/F pattern
is high
Motor rated current setting is
improper
The load is too large. The
cycle time is too short at the
accel/decel time
The voltage of the V/F pattern
is high
The size of the Drive is small
Motor is overloaded
The digital operator is not
attached or the digital opera-
tor connector is broken
Corrective Action
Check for dirt build-up on the
fans and cooling fins
Reduce the ambient temperature
around the Drive
Remove the heating unit
Recheck the cycle time and the
size of the load
Recheck the accel/decel time
(C1-01 and C1-02)
Recheck the V/F pattern (E1-01
thru E1-13)
Recheck the motor rated current
value (E2-01)
Recheck the cycle time and the
size of the load
Recheck the accel/decel time
(C1-01 and C1-02)
Recheck the V/F pattern (E1-01
thru E1-13)
Recheck the motor rated current
value (E2-01)
Recheck the cycle time and the
size of the load as well as the
times set in C1-01 and C1-02
Review the V/F pattern
parameters, E1-01 thru E1-13
Check the motor rated current
value in E2-01
Recheck the cycle time and the
size of the load as well as the
times set in C1-01 and C1-02
Review the V/F pattern
parameters, E1-01 thru E1-13
Change to a larger size Drive
Ensure the values in L6-02 and
L6-03 are appropriate
Check application/machine
status to eliminate fault
Attach the digital operator
Check the digital operator
connector
Verify the setting of o2-06