APPENDICES
APP
−
21
Table 2.14 Servo Amplifier Error List (2000 to 2799) (Continued)
Error Cause
Error
Code
Name
Description
When Error Checked
Error
Processing
Corrective Action
•
The frequency of ON/OFF switching of
the power transistor for regeneration is
too high. (Caution is required since the
regenerative resistor could overheat.)
•
Reduce the frequency of acceleration and
deceleration or feed speed while checking the
servo monitor regeneration level (%).
•
Reduce the load.
•
Increase the servomotor capacity.
•
Servo parameter (system settings)
setting error
•
Check the servo parameters (regenerative
resistor and motor type settings in the system
settings).
•
Incorrect wiring of regenerative resistor
•
Connect the regenerative resistor correctly.
•
Failure of regenerative resistor
•
Replace the regenerative resistor.
2030
Excessive
regeneration
•
Power transistor for regeneration
damaged by short circuit
•
Replace the servo amplifier.
•
The motor rpm has exceeded 115% of
the rated rpm.
•
Check the motor rpm in the servo parameters.
•
Check if the number of pulses per revolution and
travel value per revolution in the fixed
parameters match the machine specifications.
•
An overshoot has occurred because the
acceleration time constant is too small.
•
If an overshoot occurs during acceleration,
check the acceleration time and deceleration
time in the fixed parameters.
•
An overshoot has occurred because the
servo system is unstable.
•
If overshoot occurs, increase the speed integral
compensation by adjusting the position loop gain
/ position control gain 1, 2, speed loop gain /
speed control gain 1, 2 in the servo parameters.
2031
Overspeed
•
Encoder fault.
•
Check if the encoder cable is disconnected.
•
Replace the servomotor.
•
U, V, W in the servo amplifier outputs
have short circuited with each other.
•
Check if there is a short circuit between U, V, W
of the servo amplifier outputs.
•
U, V, W in the servo amplifier outputs
have shorted to ground.
•
Check if U, V, W of the servo amplifier outputs
have been grounded to the ground terminal.
Check if U, V, W of the servomotor are
grounded to the core.
If grounding is found, replace the servo amplifier
and/or motor.
•
Incorrect wiring of U, V, W phases in
the servo amplifier outputs.
•
Correct the wiring.
•
The servo amplifier transistor is
damaged.
•
Replace the servo amplifier.
•
Failure of coupling between servomotor
and encoder
•
Replace the servomotor.
•
Encoder cable failure
•
Replace the encoder cable.
•
A servomotor that does not match the
setting has been connected.
•
Check the connected motor set in the system
settings.
•
The servomotor oscillated.
•
Check and adjust the gain value set in the servo
parameters.
2032
Overcurrent
•
Noise entered the overcurrent detection
circuit.
•
Check if any relays or valves are operating in
the vicinity.
•
The converter bus voltage has reached
400 V or more. (800VAC or more for
400VAC series servo)
•
The frequency of acceleration and
deceleration was too high for the
regenerative ability.
•
The regenerative resistor has been
connected incorrectly.
•
Increase the acceleration time and deceleration
time in the fixed parameters.
•
Check the connection between C and P of the
terminal block for the terminal block for
regenerative resistance.
•
The regenerative resistor in the servo
amplifier is destroyed.
•
Measure between C and P of the terminal block
for regenerative resistance with a multimeter; if
abnormal, replace the servo amplifier. (Measure
about 3 minutes after the charge lamp has gone
out.)
•
The power transistor for regeneration is
damaged.
•
Replace the servo amplifier.
2033
Overvoltage
•
The power supply voltage is too high.
At any time during operation
Immediate stop
•
Measure the input voltage (R, S, T) with a
voltmeter.
Downloaded from
