DC over voltage

What does 7 mean?

The intermediate DC link voltage within the drive has exceeded its maximum permissible limit. This condition can arise from regeneration from the motor, excessive input supply voltage, or very rapid deceleration ramp times, which can stress internal components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Ensure that the motor is not regenerating excessively; if so, verify the function and sizing of any installed brake resistor/chopper.

2. 4

   Inspect the braking chopper and resistor circuit for proper operation if regenerative braking is utilized.