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Siemens SINUMERIK Controller
System · Intermediate · 30-120 minutes
Siemens 840D 4600 - Invalid handwheel type for handwheel
Alarm 4600 occurs when the handwheel segment type specified in machine data $MN_HANDWHEEL_SEGMENT does not match a valid handwheel configuration defined in the SINUMERIK 840D NCK system. This is typically a configuration error where the requested handwheel type index is either undefined, corrupted, or references a non-existent handwheel segment entry in the machine parameter set.
4600
Siemens 840D 4600 - Invalid handwheel type for handwheel
Invalid handwheel type for handwheel
Siemens SINUMERIK 840D system notice 4600: Invalid handwheel type for handwheel. This is a system-level notification regarding machine data or configuration. Note the message details and take the indicated action.
Root Cause Summary
Alarm 4600 occurs when the handwheel segment type specified in machine data $MN_HANDWHEEL_SEGMENT does not match a valid handwheel configuration defined in the SINUMERIK 840D NCK system. This is typically a configuration error where the requested handwheel type index is either undefined, corrupted, or references a non-existent handwheel segment entry in the machine parameter set.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access Siemens SINUMERIK Operate or HMI and navigate to Machine > Parameters > Machine Data. Search for $MN_HANDWHEEL_SEGMENT parameter.
- 2
Document the current value of $MN_HANDWHEEL_SEGMENT. Verify it matches valid handwheel type indices (0-3 or per your machine's handwheel configuration table in the commissioning documentation).
Do not modify without reference to the machine builder's commissioning data; invalid values will prevent handwheel operation.
- 3
Cross-reference the value against the handwheel configuration list. If undefined, reset $MN_HANDWHEEL_SEGMENT to the manufacturer-approved default (typically 0 for single handwheel systems).
- 4
Save parameters and perform a warm restart (Ctrl+Alt+Delete or equivalent) to reload NCK handwheel segment table.
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