The alarm can be triggered by the following grinding cycles: CYCLE432, CYCLE434, CYCLE435, CYCLE436, CYCLE438, CYCLE439, CYCLE444, CYCLE447 Remedy: Select a valid grinding wheel type in tool management
Channel block: Incorrect grinding wheel type entered
The alarm can be triggered by the following grinding cycles: CYCLE432, CYCLE434, CYCLE435, CYCLE436, CYCLE438, CYCLE439, CYCLE444, CYCLE447 Remedy: Select a valid grinding wheel type in tool management
Safety
Refer to Siemens documentation
Ensure qualified technician performs repairs
Common Causes
Grinding wheel type parameter not defined or set to invalid value in tool management database
Tool offset record references non-existent grinding wheel type code
Grinding cycle called with tool that lacks proper wheel type classification
Tool management table corruption or incomplete tool setup for grinding operations
Mismatch between wheel type code in NC program and available wheel types in tool memory
Troubleshooting Steps
1Access Tool Management on the 840D/828D HMI and verify the grinding wheel tool record contains a valid wheel type entry; confirm the wheel type code matches documentation for the active grinding cycle
2Cross-reference the NC program block calling the grinding cycle with the tool number used and verify that tool number exists in tool management with a properly configured wheel type parameter
3Review the grinding cycle parameters (CYCLE432, CYCLE434, CYCLE435, CYCLE436, CYCLE438, CYCLE439, CYCLE444, or CYCLE447) in the active program to ensure the tool selection and wheel type specification are compatible
4Clear the tool offset record for the affected tool and re-enter the grinding wheel type using the correct format and valid codes as defined in the machine's tool management system
5If using custom wheel type codes, verify they are registered in the machine parameter settings and accessible to the grinding cycles being executed
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