Fadal VMC Error: DRO No Counts

Fadal CNC Major Servo

Model: VMC Series | Code: DRO No Counts

Applicable Systems
VMC Series 88HS Control Fanuc 0i-MC

Symptoms

Alarm DRO-No-Counts: The Digital Readout is not receiving encoder counts. Check encoder connection and cable.. The CNC system displays this alarm on the operator panel.

Possible Causes

  • Encoder cable damaged or connector loose
  • Encoder hardware failure or signal degradation
  • Electromagnetic interference affecting encoder signals

Troubleshooting Steps

  1. Step 1: Read alarm DRO-No-Counts on the CNC display and note the full alarm message
    Alarm code and description displayed for diagnosis
  2. Step 2: Check the machine status and identify any obvious mechanical, electrical, or pneumatic issues
    Visible faults identified or confirmed as intermittent
  3. Step 3: Consult the manufacturer manual for alarm-specific troubleshooting procedures
    Root cause identified per manufacturer guidelines
  4. Step 4: Apply the recommended fix and reset the alarm
    Alarm cleared and machine resumed normal operation

How to Reset

To reset alarm DRO-No-Counts: 1) Address the root cause. 2) Press the RESET key on the CNC panel. 3) If the alarm persists, cycle power to the control. Caution: Repeated alarms without fixing the cause may cause damage.

Frequently Asked Questions

  • Q: What does alarm DRO-No-Counts mean?

    Alarm DRO-No-Counts indicates: The Digital Readout is not receiving encoder counts. Check encoder connection and cable.. Follow the troubleshooting steps to resolve the issue.

Related Fadal Fault Codes

Source: HelmanCNC.com - https://www.helmancnc.com/fadal-error-messages-emergency-error-codes/

Category: CNC