User Manual Of EL7-EC** AC Servo
269
8.3 Alarm Handling
**When error occurs, please solve accordingly. Then, restart.
Error
code
Main Sub
Display:
“Er 0A0”--“Er 0A1”
0A
0~1
Content: Circuit current detection error
Cause
Diagnosis
Solution
Motor power cable wiring
error
Verify motor power cable
wiring
Make sure U,V,W terminal wired
properly
Main power supply
undervoltage
Verify L1,L2,L3 terminal
voltage
Increase main power supply voltage
Driver fault
/
Replace driver
Error
code
Main Sub
Display: “
Er 0A3”
0A
3
Content: Motor power cable not connected
Cause
Diagnosis
Solution
Motor power cable not
connected
Verify motor power cable
wiring
Measure resistance values between
U, V, W terminals, make sure the
values are almost equal. If not, might
be due to damaged motor or motor
winding open circuit.
Motor fault
/
Replace motor
Driver fault
/
Replace driver
Error
code
Main Sub
Display: “
Er 0b1”
0b
1
Content: Control circuit power supply abnormal
Cause
Diagnosis
Solution
USB power supply too
low
Verify if USB cable is
properly connected
and not damaged.
Replace USB mini cable
Driver fault
/
Replace driver
Error
code
Main Sub
Display: “Er
0c0”
0c
0
Content: DC bus overvoltage
Cause
Diagnosis
Solution
Main power supply
overvoltage
Verify L1,L2,L3 terminal voltage
Decrease main power supply
voltage
Inner brake circuit
damaged
/
Replace driver
Driver fault
/
Replace driver
