Cause : BRAKE SWITCH comes when an issue with the brake switch or its associated circuitry. The brake switch is typically used to engage or disengage the braking system or to signal certain conditions related to braking. When a fault occurs, it can affect the drive's braking performance or safety.

BRAKE SWITCH fault in parker AC690 drive indicate that the internal dynamic braking switch has been overloaded. This fault can prevent the drive from starting or can cause it to stop unexpectedly.

• Trying to decelerate a large inertia too quickly or too often