YASKAWA F7 User Manual page 131

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Digital
Operator Display
Heatsink Overheat
The temperature of the Drive's heatsink
OH
exceeded the setting in L8-02 and
Heatsink Overtemp
L8-03 = 0 to 2.
(Continued)
Drive's internal cooling fan stopped
(F7U2018 / F7U4018 and larger).
Heatsink Overheat
The temperature of the Drive's heatsink
OH1
exceeded 105 degrees C.
Heatsink Max Temp
Drive's internal cooling fan stopped
(F7U2011 / F7U4011 and larger capacities).
Motor Overheating 1
Detected when A2 or A3, programmed for
OH3
motor temperature (H3-09 or H3-05 = E),
Motor Overheat 1
exceeds 1.17V for time L1-05 and
L1-03 = 0 to 2.
Motor Overheating 2
Detected when A2 or A3, programmed for
OH4
motor temperature (H3-09 or H3-05 = E),
Motor Overheat 2
exceeds 2.34V for time L1-05 and
L1-03 = 0 to 2.
Motor Overload
Detected when L1-01 = 1 to 3 and the
OL1
Drive's output current exceeded the motor
Motor Overloaded
overload curve.
The overload curve is adjustable using
parameter E2-01, L1-01, and L1-02.
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Table 6.1 Fault Displays and Processing (continued)
Description
Diagnostics & Troubleshooting 6 - 6
Aotewell
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Cause
The Drive's cooling fan(s)
stopped.
The Drive's internal cooling
fan(s) stopped.
There was a heat source
nearby.
The ambient temperature was
too high.
The Drive's cooling fan(s)
stopped.
The Drive's internal cooling
fan(s) stopped.
Overheating of motor as
measured by the motor
thermistor.
Overheating of motor as
measured by the motor
thermistor.
The load was too large. The
cycle time was too short at the
accel/decel time.
The voltage of the V/F
pattern was incorrect for the
application.
Motor rated current setting
was improper.
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Corrective Action
Replace the cooling fan.
Check for dirt build-up on the
fans and heatsink.
Reduce the ambient temperature
around the Drive.
Replace the cooling fan.
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.