Measuring axis (rotary axis 1 or 2) not in basic or intended position
Siemens · DAsl Diagnostics and Alarms
Was bedeutet 61429 ?
A rotary measuring axis (either axis 1 or 2) is not in its required basic or intended position during a measurement operation. This can occur on the first measurement (Error A or B) or during subsequent measurements when comparing positions (Error C or D). This will lead to inaccurate measurements or prevent the measurement cycle from proceeding correctly.
Häufige Ursachen
- Rotary axis position feedback mismatch with the target measurement position (e.g., mechanical slippage, encoder error).
- Incorrect reference point setting (P2500) or homing procedure for the measuring rotary axis.
- Deviations in the rotary axis's actual position (r0043) from its commanded position due to mechanical play.
- PLC program logic error commanding the axis to an incorrect pre-measurement position.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Manually jog the affected rotary axis (e.g., A or C axis) to its home position and re-perform the homing procedure (G74, G75).
- 2
Check encoder feedback signals (A, B, Z channels) at the drive input terminals for signal integrity using an oscilloscope.
- 3
Verify parameters P2500 (reference point shift) and P2502 (zero mark distance) for the rotary measuring axis.
- 4
Use the diagnostic functions to monitor the actual position (r0043) and target position (r0040) of the rotary axis during measurement preparation.
- 5
Inspect the mechanical coupling of the rotary axis motor and gearbox for backlash or slippage.