Applicable Systems
MINAS A5
MINAS A6
MINAS A5II
FP-X
FP7
Symptoms
The control power supply voltage has dropped below the minimum rated voltage. The servo drive cannot maintain normal operation and triggers a protection alarm.
Possible Causes
- Control power supply voltage dropped below the rated minimum (typically 200V AC for 200V class or 400V AC for 400V class)
- Power supply wiring has loose connections or damaged cables
- Power supply capacity is insufficient for the drive load
Troubleshooting Steps
- Step 1: Measure the control power supply voltage at the drive terminals using a multimeter
Voltage should be within the rated range (200V AC +/-10% for 200V class) - Step 2: Check all power supply wiring connections for looseness or corrosion
All connections are tight and free of corrosion - Step 3: If voltage is low, check the upstream power supply and transformer capacity
Power supply can deliver adequate voltage under load - Step 4: If the problem persists, replace the drive's internal power supply board
New power supply board maintains stable voltage
How to Reset
To reset: 1) Resolve the undervoltage condition. 2) Cycle the control power OFF then ON. 3) Re-enable the servo motor. If the alarm persists, contact technical support.
Frequently Asked Questions
- Q: What causes Err11.0 on Panasonic MINAS A5?
The control power supply voltage dropped below the rated minimum. Check power supply wiring and voltage levels.
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Source: Panasonic MINAS A5 Series Servo Drive Manual; Panasonic device FAQ (device.panasonic.cn)
Category: PLC & VFD
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