User Manual Of EL7-EC** AC Servo
272
Error
code
Main Sub
Display: “
Er 0E2”
0E
2
Content: Power output to motor shorted to ground
Cause
Diagnosis
Solution
Driver U, V, W terminals
shorted to ground
Disconnect motor power cable
and check for short circuit
between driver UVW and PE
1. Reconnect wiring.
2. Change motor power cable.
Motor shorted to ground
Connect motor power cable to
driver power output. Verify if
resistance value of UVW to PE is
in the range of MegaOhm (MΩ)
Replace motor
Driver fault
/
Replace driver
Error
code
Main Sub
Display: “
Er 0E4”
0E
2
Content: Phase overcurrent
Cause
Diagnosis
Solution
Driver U, V, W terminals
shorted to ground
Disconnect motor power cable
and check for short circuit
between driver UVW and PE
1. Reconnect wiring.
2. Change motor power cable.
Motor shorted to ground
Connect motor power cable to
driver power output. Verify if
resistance value of UVW to PE is
equal and if there is short circuit
Replace motor
Driver fault
/
Replace driver
Error
code
Main Sub
Display: “
Er 0F0”
0F
0
Content: Driver overheated
Cause
Diagnosis
Solution
Temperature of power
module exceeded upper
limit
Measure the temperature
of driver radiator.
1. Improve cooling condition. Please
check installation guide;
2. Replace driver and motor with
higher power rating;
3.
Increase duration time for
acceleration and deceleration;
4. Decrease load
Error
code
Main Sub
Display: “
Er 100”
10
0
Content: Motor overloaded
Cause
Diagnosis
Solution
Load too heavy
Verify if actual load exceeds
maximum value allowed
1. Decrease load
2. Adjust limit values
Strong
mechanical
vibration
Look for mechanical vibration from
machine system
1. Adjust gain value of control loop
2. Increase duration time for
acceleration and deceleration
Motor or encoder
cable wiring error
Verify motor and encoder wiring
1. Reconnect wiring
2. Replace motor and encoder cable
Holding brake
engaged
Verify holding brake terminal voltage Cut off holding brake