LiteOn EVO 6800 Series - Page 138

135
Keypad
Display
Fault Name
Cause
Possible Solution
larger than the drive rated
capacity
7. A magnetic contactor (MC)
on the output side of the drive
has turned on or off
8. V/F set incorrectly
9. Excessive torque
compensation
10. Electrical signal interference
causes drive malfunction
11. Overexcitation gain is set
too high
12. Run command was applied
while motor was coasting
13. Incorrect motor code
14. The motor does not match
the drive control method
15. The motor cable is too long
load inertia and acceleration time. If
the required torque is insufficient,
check the motor capacity.
7. Install a sequence controller to
ensure the MC does not open or close
when the drive is outputting voltage.
8. Check the ratios between the
frequency and voltage set by V/F.
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
SC、
SC1、
SC2、
SC3
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
EF0
External fault input from
communication
Register (send) an external
failure of the host device with
the communication data.
(2401H.BIT 2 = 1)
Troubleshoot external causes
Cancel the external fault input of the
host device
EF1to
EF7
External Fault
（Input Terminal S1 to
S7）
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.
oH
Heatsink Overheat
1. Ambient temperature is too
high
1. Check the temperature surrounding
the drive