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Heidenhain Controller
Safety · Intermediate · 30-120 minutes
HEIDENHAIN 280-089B - Dresser too wide
HEIDENHAIN alarm 280-089B occurs when the programmed dresser width exceeds the available safety clearance distance to the grinding wheel edge. The TNC system calculates that the dresser diamond would contact the wheel at the approach position, violating the minimum safety clearance requirement.
280-089B
HEIDENHAIN 280-089B - Dresser too wide
Dresser too wide
The dresser is too wide relative to the configured safety clearance. The clearance must be at least half the dresser width to prevent diamond contact.
Root Cause Summary
HEIDENHAIN alarm 280-089B occurs when the programmed dresser width exceeds the available safety clearance distance to the grinding wheel edge. The TNC system calculates that the dresser diamond would contact the wheel at the approach position, violating the minimum safety clearance requirement.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access tool table
Press TOOL TABLE softkey, navigate to the dresser tool entry and verify the width parameter matches physical dresser dimensions.
Measure the dresser with calipers rather than relying on manufacturer specifications
- 2
Check dressing cycle parameters
In the part program, verify the dresser width value in the CYCLE 280 or equivalent dressing cycle matches the tool table entry.
Incorrect width values can cause collision during dressing operations
- 3
Update and test
Correct the dresser width parameter and run a simulation to verify the alarm clears before executing the dressing cycle.
Call a technician if:
- ·Parameter changes don't resolve alarm
- ·Physical dresser or wheel damage suspected
- ·Machine geometry requires recalibration
Prevention
- Always verify dresser dimensions before entering tool data
- Maintain adequate safety clearance margins
- Regular wheel and dresser inspection
Common Mistakes
- Using nominal dresser width instead of actual measured width
- Setting safety clearance exactly to minimum requirement
- Forgetting to update parameters after dresser changes
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Always verify with your machine manual or a certified technician before performing service procedures.