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Symptoms

If you notice that the red LED on your Elebia hook is blinking while the hook is either fully open or fully closed, or if the LED unexpectedly changes from blue (indicating a closed hook) to red without any user input, it’s important to understand what this means for your equipment.

Overview

All Elebia hooks, with the exception of the EVO range (where LEDs are optional), are equipped with LED indicators that provide real-time feedback on the hook's status. The red LED serves multiple purposes: it lights up when the hook is in motion and can also indicate abnormal conditions or errors. For detailed information on LED behavior, please refer to the related article [here].

System Operation

The LED system operates through a coordinated effort between the hook PCB (Printed Circuit Board) and the LED PCB. The hook PCB sends commands based on readings from an encoder that detects the hook's position. The LED colors indicate the following:

- Blue LED: Hook is closed.

- Red LED: Hook is open.

- Red LED (active/blinking): Hook is currently in motion.

Cause

If the hook is closed (indicated by a blue LED) and suddenly switches to red, it suggests that the encoder has detected a variation in the hook's angle. This change can be attributed to several factors:

- Mechanical Misalignment: Components may not be properly aligned.

- Wear or Play: Over time, mechanical components can wear down, leading to instability.

- External Forces: Impacts or other external forces can affect the hook's position, even causing minor movements that the system interprets as instability.

Troubleshooting Steps

1. Mechanical Inspection: Begin by checking for any mechanical play or looseness in the hook components. Look for signs of wear, deformation, or damage from impacts. Ensure that all parts are securely fastened and aligned correctly.

2. Encoder Behavior Verification: Verify that the encoder reading remains stable when the hook is in a fixed position. If you notice fluctuations in the state reading, investigate the electric conections betwen encoder and Hook PCB.

3. Hysteresis Adjustment (Advanced): If there is no excessive mechanical play, you may consider adjusting the hysteresis parameter. This setting allows for a small range of movement before triggering a red LED indication. However, it is crucial to note that this adjustment should only be made after identifying the root cause of the issue. Increasing hysteresis may mask underlying mechanical or system problems.

⚠️ Important: Always prioritize resolving mechanical issues before making any parameter adjustments. Persistent or unexpected activation of the red LED suggests instability in the detected position, which should be addressed to ensure safe and effective operation of your Elebia hook.