ENC CABLE
ABB · ACS800
What does 7310 mean?
A phase signal (A, B, or Z) from the pulse encoder connected to the ABB ACS800 drive is missing. This indicates a loss of positional feedback from the motor, which can lead to unstable motor operation, uncontrolled movement, or incorrect speed regulation. This fault (3.31 AW 6 bit 3) is related to programmable Fault Function 50.07.
Common Causes
- Damage to the pulse encoder unit itself.
- Breakage, loose connections, or incorrect wiring in the pulse encoder cable.
- Faulty pulse encoder interface module (if used) or its internal circuitry.
- Improper parameter settings related to the encoder configuration in the drive.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect the pulse encoder unit and its wiring for any physical damage, loose connections, or signs of wear.
- 2
Check all wiring connections between the pulse encoder and the pulse encoder interface module or the drive's encoder input terminals for proper termination and continuity.
- 3
Verify the integrity of the entire encoder cable for breaks, shorts, or insulation damage, especially if it runs through abrasive or flexing environments.
- 4
If an encoder interface module is used, check its power supply, status indicators, and wiring to the ABB ACS800 drive.
- 5
Review parameter group 50 ENCODER MODULE settings in the drive to ensure correct configuration for the installed encoder type and resolution.