User manual of EL8-EC***F AC Servo
310
Error
code
Main
Sub
Display:
“
Er 0A5
”
0A
5
Content:
DC Bus error
Cause
Diagnosis
Solution
L1, L2 terminal voltage too
low
Verify L1, L2 terminal
voltage. Check if power on
indicator light on servo drive
is on and d27 DC bus
voltage.
Make sure L1, L2 terminal voltage is
within recommended range
Error
code
Main
Sub
Display:
“
Er 0A6
”
0A
6
Content:
Temperature measuring error
Cause
Diagnosis
Solution
L1, L2 terminal voltage too
low
Verify L1, L2 terminal
voltage
Make sure L1, L2 terminal voltage is
within recommended range
Error
code
Main
Sub
Display:
“
Er 0b0
”
0b
0
Content:
Control circuit power supply voltage too low
Cause
Diagnosis
Solution
Control circuit power
supply voltage too low
Verify L1C, L2C terminal
voltage; check if wiring
connection is tight
Increase L1C, L2C terminal voltage;
Tighten L1C, L2C terminal
connection
Power supply under
capacity
/
Increase power supply capacity for
L1C, L2C terminals
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 Type-C cable
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
Acceleration/deceleration
time too short
Verify if the time is actually too
short
Increase the duration time or
change to a regenerative resistor
with higher resistance.
Regenerative brake
parameter anomaly
Verify Pr7.32/Pr7.33
Modify vent overload parameter
Inner brake circuit
damaged
/
Replace driver
