Hall signals lost or incorrect (_ecHALL_SIGNAL_LOSS)
ABB · Application Error ABB Motion Drives Error trouble shoo
What does 10021 mean?
This error occurs when the drive is configured for "Halls only" or "Encoder + Halls" feedback and detects an illegal Hall sensor state (0 or 7). This typically points to a faulty encoder (which often simulate Hall signals) or incorrect wiring.
Common Causes
- Faulty encoder in the motor, specifically issues with simulated Hall signals.
- Damaged or incorrectly wired motor encoder cabling.
- Poor quality of installation, leading to loose connections or electrical noise affecting Hall signals.
- Incorrect encoder type selection in the drive parameters (e.g., expecting Hall signals when not provided).
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect the motor encoder wiring and connections for damage, loose terminals, or improper shielding.
- 2
Verify that the selected encoder type in the drive's parameters accurately reflects the motor's feedback device (Halls only or Encoder + Halls).
- 3
Use Mint Workbench to scope the Encoder Hall State to look for problems with signal integrity and transitions.
- 4
Check the encoder for physical damage or internal faults that could cause illegal Hall states.
- 5
Ensure proper grounding and shielding of the encoder cable as per the drive installation manual to prevent noise interference.