Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-45 minutes

Alarm 62502

Siemens 840D 62502 - Channel block: Dresser, GWPS has been limited

The alarm can be triggered by the following grinding cycle: CYCLE421 Remedy: Check limit value for GWPS and program a lower value in the NC program if necessary

Siemens SINUMERIKServo/AxisIntermediate30-45 minutes

62502

Siemens 840D 62502 - Channel block: Dresser, GWPS has been limited

Channel block: Dresser, GWPS has been limited

The alarm can be triggered by the following grinding cycle: CYCLE421 Remedy: Check 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) limit value exceeded during CYCLE421 execution
  • Incorrect GWPS parameter programmed in NC code exceeds machine physical limits
  • Grinding wheel diameter specification mismatch between program and actual tooling
  • Machine parameter limits for maximum GWPS not properly configured
  • Dresser tool speed incompatible with current wheel condition or machine capability

Troubleshooting Steps

  1. 1Review the NC program block triggering the alarm and identify the GWPS value specified for the dresser operation
  2. 2Compare programmed GWPS against machine documentation and CYCLE421 parameter limits to determine if value exceeds specification
  3. 3Verify grinding wheel actual diameter matches the diameter value used in GWPS calculations within the program
  4. 4Check machine parameter settings related to GWPS limiting and maximum spindle speed constraints
  5. 5Reduce GWPS value in the NC program to operate within machine limits and re-run the cycle to verify alarm clears

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