How to Check If the Encoder Is Faulty
Applies to: All current Elebia hook models (not applicable to early Evo5–Evo25 models, which use a timer-based system)
What the Encoder Does
The encoder is a magnetic sensor that detects whether the hook is open or closed. It communicates with the PCB to stop the motor when the hook reaches each end of travel. A correctly functioning encoder produces a double beep at the end of each stroke. The hook will not function without a working encoder.
Symptoms That Suggest an Encoder Problem
- Hook opens or closes only partially and stops with a single beep.
- Hook overshoots its position, opening too far or closing past the locked position.
- Calibration procedure starts but does not complete.
- Hook emits two beeps during movement but at incorrect positions.
- eMAX displays the hook as open when it is visually closed, or vice versa.
- Hook behaves erratically after a motor or clutch replacement.
Note: Many of these symptoms can result from lost calibration rather than a faulty encoder. Always recalibrate before further diagnosis.
Step 1 - Recalibrate Before Anything Else
Hang the hook vertically and run a full calibration, If you have an eMAX, it must be disconnected during calibration . If calibration completes and a double beep is heard at the correct positions (fully open and fully closed), the encoder is likely functioning correctly. If issues persist, continue to Step 2.
Step 2 - Check Encoder Signal via eMAX
Connect the eMAX to the hook and manually move the hook mechanism slightly by hand. The hook view in the eMAX should update in real time. If it does not change, check the encoder cables for loose connections before assuming the encoder is faulty.
Step 3 - Physical Inspection
- Encoder magnet: confirm it is clean and correctly seated. Clean and reposition if shifted or covered in debris.
- Encoder cables: inspect the four wires (brown, white, green, yellow) for damage or disconnections.
- Encoder housing: check for cracks. A cracked housing requires encoder replacement even if the electronics appear functional.
When to Replace the Encoder
Replace the encoder if:
- The eMAX angle value does not change during manual movement and all cable connections are intact.
- The encoder housing is cracked or broken.
- Calibration fails repeatedly with no mechanical obstructions present.
- The hook does not respond to commands after ruling out battery, PCB, and motor issues.
After Encoder Replacement
Calibrate the encoder immediately after installation. Running the hook without calibration can cause incorrect motor stops and damage the clutch. Secure the encoder cables away from the gear wheels to prevent movement during operation.
For further assistance, contact the support team or refer to related articles on encoder calibration and firmware operations.