Initial Power Up Sequence; Checks Prior To Power Up; Checks After Power Is Applied - Sevcon Gen4 Applications Reference Manual

Initial power up sequence

WARNING: Incorrectly wired or configured vehicles may behave in unexpected ways.
Always confirm correct operation of the motor and encoder before lowering the drive
wheels to the ground.

Checks prior to power up

Follow this checklist prior to applying power to your system:

Jack up the vehicle so that the drive wheels are clear of the ground.

Confirm all connections are tightened to specified level.

Ensure all plugs are fully inserted.

Confirm power wiring connections are made to the correct terminals
(B+, B-, +, M1, M2 and M3).

Ensure the controller is securely mounted (from a mechanical and thermal perspective).

Ensure there is adequate and correctly ducted airflow for any fan cooling system.

Check the routing of cables is safe with no risk of short circuit, overheating or cable
insulation wear due to rubbing.

Checks after power is applied

Apply power and do the following:

Use Sevcon DVT (see page 6-2), the Sevcon Calibrator handset or any configuration tool to
complete the configuration process which starts on page 6-7.

Using the drive controls ensure the wheels rotate in the expected direction. If they do not,
check the motor wiring, encoder wiring and encoder configuration (page 6-14).
It should now be safe to lower the vehicle to the ground and test drive. Proceed with caution.
Doc. # 177/52701
Rev. 3.3
System design
5-15