What are the most common loading dock product electrical interlocks?

Although there are many combinations available there are 2 very common interlocks specified. 1. Interlocking a vehicle restraint to a hydraulic or air powered dock leveler. This interlock is safety related, the dock leveler will not operate until the truck in position has been secured by the vehicle restraint. The truck secured signal from the vehicle restraint now renders the dock leveler controls operational. 2. Interlocking the overhead door to a hydraulic or air powered dock leveler. This interlock is used to reduce potential damage to the overhead door and improve building security. Before the dock leveler will operate the overhead door must be raised which activates a wall installed limit switch. The activated limit switch now renders the dock leveler controls operational. When the dock leveler is cycled it will not contact the overhead door causing damage to the door and the locking mechanism.

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