What causes Siemens SINUMERIK alarm 62185?

Hirth tooth indexing system misalignment or wear causing angle deviation. CYCLE800 parameter configuration mismatch with actual machine geometry. Swivel head mechanical play or backlash exceeding tolerance. Encoder feedback signal loss or calibration drift on rotary axis. Tool changer or workholding setup interfering with swivel motion.

How do I fix Siemens SINUMERIK alarm 62185?

1. Verify CYCLE800 installation and parameter block settings match machine documentation; cross-reference %4 deviation angle against acceptable tolerance range 2. Inspect Hirth tooth coupling for wear, debris, or damage; manually rotate swivel axis and verify smooth engagement without binding or play 3. Calibrate rotary axis encoder and check for signal integrity; run machine reference move and confirm positioning repeatability 4. Execute diagnostic positioning commands to move swivel axis incrementally and compare commanded vs. actual angle readings in diagnostics 5. Review recent maintenance history for swivel head service; if issue persists, perform CYCLE800 dry-run with trace enabled to identify where angle adaptation occurs

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 45-90 minutes

Alarm 62185

Siemens 840D 62185 - Channel block: angle adapted to angle grid

difference angle with Hirth tooth system Alarm triggered by following cycle: CYCLE800. Remedy: Check installation and start-up of the swivel cycle CYCLE800.

Siemens SINUMERIKServo/AxisIntermediate45-90 minutes

62185

Siemens 840D 62185 - Channel block: angle adapted to angle grid

Channel block: angle adapted to angle grid

difference angle with Hirth tooth system Alarm triggered by following cycle: CYCLE800. Remedy: Check installation and start-up of the swivel cycle CYCLE800.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

Hirth tooth indexing system misalignment or wear causing angle deviation
CYCLE800 parameter configuration mismatch with actual machine geometry
Swivel head mechanical play or backlash exceeding tolerance
Encoder feedback signal loss or calibration drift on rotary axis
Tool changer or workholding setup interfering with swivel motion

Troubleshooting Steps

1Verify CYCLE800 installation and parameter block settings match machine documentation; cross-reference %4 deviation angle against acceptable tolerance range
2Inspect Hirth tooth coupling for wear, debris, or damage; manually rotate swivel axis and verify smooth engagement without binding or play
3Calibrate rotary axis encoder and check for signal integrity; run machine reference move and confirm positioning repeatability
4Execute diagnostic positioning commands to move swivel axis incrementally and compare commanded vs. actual angle readings in diagnostics
5Review recent maintenance history for swivel head service; if issue persists, perform CYCLE800 dry-run with trace enabled to identify where angle adaptation occurs

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Always verify with your machine manual or a certified technician before performing service procedures.