Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-40 minutes

Alarm 62500

Siemens 840D 62500 - Channel block: GWPS has been limited

The alarm can be triggered by the following grinding cycle: CYCLE446 Remedy: Check the limit value for GWPS and program a lower value in the NC program if necessary

Siemens SINUMERIKServo/AxisIntermediate20-40 minutes

62500

Siemens 840D 62500 - Channel block: GWPS has been limited

Channel block: GWPS has been limited

The alarm can be triggered by the following grinding cycle: CYCLE446 Remedy: Check the limit value for GWPS and program a lower value in the NC program if necessary

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • GWPS (grinding wheel peripheral speed) parameter exceeds configured system limits in CYCLE446
  • NC program specifies grinding wheel speed value higher than machine-defined maximum threshold
  • Machine parameter settings for maximum allowable GWPS have been reduced or are incorrectly configured
  • Grinding wheel diameter specification in program does not match actual installed wheel, causing speed calculation mismatch

Troubleshooting Steps

  1. 1Review the CYCLE446 call in the NC program at the specified block number and note the current GWPS value being commanded
  2. 2Access machine parameters and verify the maximum GWPS limit setting; compare against the program value to identify the overage
  3. 3Consult the machine documentation or grinding spindle specifications to confirm the safe operating GWPS range for the installed grinding wheel
  4. 4Modify the GWPS parameter in the CYCLE446 call to a value below the machine limit, or adjust the machine limit if it was incorrectly set
  5. 5Clear the alarm, re-run the program in single-block mode, and monitor spindle speed to confirm the limit is no longer exceeded

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