127
interference causes drive
malfunction
11. Overexcitation gain is set
too high
12. Run command was applied
while motor was coasting
13. The motor does not match
the drive control method
14. The motor cable is too long
9. Adjust d1-02 to d1-11 (or d1-13
to d1-22 for motor 2)
10.Check the amount of torque
compensation
11. Find out possible solutions to
suppress the electrical signal
interference
11. Check if the fault occurs
frequently with overexcitation
function operation
12. Enable Speed Search via
multi-function input terminal
14. Check the control method
(A1-02)
15. Use a larger drive
IGBT Fault or Output
Short Circuit
1. Motor has been damaged
due to the motor insulation
weakened or overheat
2. The cable is damaged
3. Hardware fault
4. The drive is damaged
1. Replace the motor or check the
motor insulation resistance
2. Repair any short circuits and
check the motor power cable
External Fault
（Input Terminal S1 to
S8）
1. An external device tripped
an alarm
2. Incorrect wiring
3. Multi-function input wiring
is not correct
1. Remove the cause of the
external fault then reset the
multi-function input.
2. Confirm if the signal lines is
properly connected to the
terminals assigned for external
fault detection (E1-口口= 23 to 38)
3. Confirm if E1-口口=23 to 38 is
set to the unused terminals.
Heatsink Overheat
Heatsink temperature
over 90 to 100°C
(Overheat level is
determined by rating
of the drive)
1. Ambient temperature is too
high
2. Internal cooling fan stopped
operating
3. Bad air flow due to
insufficient room.
1. Check the temperature
surrounding the drive
a. Improve the air flow inside the
enclosure panel
b. Install an air conditioner or fan
to cool the environment
c. Remove any possible source of
heat
2. Measure the output current
a. Reduce the load
b. Lower setting in C6-00 ( Carrier
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