Applicable Systems
Haas CNC Mill (VF/VM Series)
Symptoms
DC bus voltage is low, indicating a power supply issue.
Possible Causes
- Incoming line voltage is below specification.
- DC bus capacitor degradation or power supply fault.
Troubleshooting Steps
- Step 1: Check the incoming line voltage.
Low voltage identified. - Step 2: Fix the power supply or replace faulty components.
DC bus voltage restored to normal.
How to Reset
Fix the DC bus voltage and reset to clear the alarm.
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Source: Haas Alarm Codes, Haas Automation
Category: CNC
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