Applicable Systems
IRB 2600
IRB 4600
IRB 6700
IRB 1200
IRC5 Controller
Symptoms
Robot path deviation exceeds tolerance during motion; robot stops; programmed path not achieved.
Possible Causes
- Payload shift during motion
- Counterbalance system fault
- Servo tuning parameters incorrect for current payload
Troubleshooting Steps
- Step 1: Check if payload shifted or is loose on end-effector
Payload secure - Step 2: Verify counterbalance pressure (if equipped)
Pressure within spec - Step 3: Run servo tuning wizard for current payload
Tuning completes, motors respond well - Step 4: Check for mechanical play/backlash in joints
No excessive play - Step 5: Re-run program and verify path accuracy
Path within tolerance
How to Reset
Reset via FlexPendant; may require servo tuning update.
Frequently Asked Questions
- Q: How often to tune ABB robot servos?
After payload change, after mechanical maintenance (gearbox/motor replacement), or if path accuracy degrades. Use IRC5 tuning wizard.
Source: ABB Robotics application manual
Category: Robot