Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-60 minutes

Alarm 61544

Siemens 840D 61544 - Channel block: Grinding wheel diameter worn down

The alarm can be triggered by the following grinding cycle: CYCLE438 Remedy: New grinding wheel required, or check limit values in the grinding wheel data

Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

61544

Siemens 840D 61544 - Channel block: Grinding wheel diameter worn down

Channel block: Grinding wheel diameter worn down

The alarm can be triggered by the following grinding cycle: CYCLE438 Remedy: New grinding wheel required, or check limit values in the grinding wheel data

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Grinding wheel diameter has worn below the minimum threshold specified in CYCLE438 parameters
  • Incorrect limit values configured in the grinding wheel data table
  • Worn wheel diameter sensor providing inaccurate readings
  • Grinding wheel data not updated after wheel change or dressing operation

Troubleshooting Steps

  1. 1Verify actual grinding wheel diameter using precision calipers and compare against the minimum limit value stored in the grinding wheel data
  2. 2Review CYCLE438 grinding wheel diameter limit parameters and confirm they match the current wheel specification and machine requirements
  3. 3Check grinding wheel data table entries for the active tool offset—ensure correct diameter values and wear limit thresholds are programmed
  4. 4Physically inspect the wheel for wear; if worn below usable limits, replace with a new grinding wheel of the correct specification and update the diameter value in the grinding wheel data
  5. 5If diameter measurement is correct but alarm persists, test or recalibrate the wheel diameter sensor and verify sensor signal in the diagnostics menu

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Always verify with your machine manual or a certified technician before performing service procedures.