Cause : AMT timeout comes when calculations are taking too long, possibly due to noise on the motor cables.

Noise on motor cables can interfere with the proper operation of the motor and the associated control systems. Here are some steps to address and mitigate noise on motor cables:

1. Check Cable Routing: Ensure that motor cables are routed away from sources of electrical noise, such as power cables, transformers, or high-current equipment. Avoid running motor cables parallel to or in close proximity to these sources, as it can induce noise in the cables.

2. Use Shielded Cables: Shielded cables can help mitigate electromagnetic interference (EMI) by providing a conductive shield around the signal-carrying conductors. Use shielded cables for motor connections, and properly ground the cable shields at both ends to dissipate any induced noise.

3. Proper Grounding: Ensure that the motor, VFD, and associated equipment are properly grounded according to manufacturer recommendations and local electrical codes. A solid electrical ground helps to divert unwanted noise away from sensitive components.

4. Filtering and Surge Protection: Install line filters or surge protectors on the power supply lines feeding the motor and VFD. These devices can help suppress high-frequency noise and transient voltage spikes that may interfere with motor operation.

5. Twist Motor Cables: Twist the motor cables together to help cancel out electromagnetic interference. This technique, known as twisted pair wiring, reduces the loop area between the conductors, minimizing the pickup of external noise.

6. Add Ferrite Cores: Ferrite cores can be placed around motor cables to absorb high-frequency noise and prevent it from traveling along the cables. Install ferrite cores near both ends of the motor cables, especially close to the motor and VFD connections.

7. Optimize Cable Length: Keep motor cable lengths as short as possible to minimize the risk of signal degradation and noise pickup. Avoid coiling or bundling excess cable length, as this can create inductive loops that amplify noise.

8. Inspect Cable Condition: Visually inspect motor cables for any signs of damage, such as cuts, abrasions, or exposed conductors. Damaged cables can introduce noise and compromise electrical insulation, leading to performance issues or safety hazards.