Omron XTRADRIVE User Manual page 255

XtraDrive User Manual
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A.30: Regenerative Error Detected
Display and Outputs
ALO1
ON
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
During servomotor
A
B
C
D
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A.32: Regenerative Overload
Display and Outputs
ALO1
ON
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
A
B
Chapter 9: Inspection, Maintenance, and Troubleshooting
Alarm Outputs
Alarm Code Output
ALO2
ON
operation
About 1s after
main circuit power
is turned ON.
Cause of the Problem
Malfunctioning regenerative transistor.
Regenerative resistor is open.
Disconnected regenerative unit (for an
external regenerative resistor).
Defective servo amplifier.
Alarm Outputs
Alarm Code Output
ALO2
ON
A
During servomotor operation
Cause of the Problem
Regenerative power exceeds the limit.
Alarm occurs although an external
regenerative resistor is used and the
temperature rise of the regenerative
resistor is small.
9-7
ALM Output
ALO3
OFF OFF
When the control
A, B
power is turned ON.
A, B, C
Replace servo amplifier.
Replace servo amplifier or
regenerative resistor.
Check the wiring of the external
regenerative resistor.
Replace servo amplifier.
ALM Output
ALO3
OFF OFF
A
A,B
Use an external regenerative
resistor that matches the
regenerative power capacity.
Correct parameter Pn600.
D
Solution
Solution