9.3 Troubleshooting with Alarm Displays
9-41
9
A.F1
A.F1: Missing Phase Detected
Display and Outputs
Note
OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
Note
A and B tend to occur in a Servo Driver with a capacity of 500 W or higher.
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1
ALO2
ALO3
OFF
ON
OFF
OFF
Cause
Remedy
A
One phase (L1, L2, or L3) of the main cir-
cuit power supply is disconnected.
• Check power supply.
• Check wiring of the main circuit power
supply.
• Check QF, noise filter, magnetic contac-
tor.
B
There is one phase where the line voltage is
low.
Check power supply.
C
The Servo Driver is defective.
Replace the Servo Driver.
C
A
B
At main circuit power
supply ON.
Occurred when the control
circuit power turned ON.
Summary of Contents for OMNUC W R88A-NCW152-DRT
Page 1: ...Cat No I538 E3 1 DeviceNet Option Unit OMNUC W Series Model R88A NCW152 DRT...
Page 53: ...4 Connectors 4 5 3 DeviceNet Network Configuration Restrictions 4 22 4...
Page 97: ...5 Parameter Settings 5 3 8 Notch Signal Output Positioning 5 44 5...
Page 211: ...8 Servo Driver Settings 8 5 3 Absolute Encoder Multi turn Limit Setting 8 24 8...
Page 257: ...9 Troubleshooting 9 46 9...