Component Description: DSM

The DSM determines the need to move the LH or RHPRB and applies voltage and ground on only 2 circuits to the PRB motor in order to stow (retract) or deploy (extend) the PRB. To stow the PRB, the DSM applies voltage on the RB STOW circuit and ground on the RB DEPLOY circuit. To deploy the PRB the DSM switches the voltage and ground so the voltage is applied to the RB DEPLOY circuit and ground to the RB STOW circuit. The DSM monitors the movement and position of PRB with a hall-effect switch that is part of the PRB motor. The DSM supplies a 10 volt controlled voltage and a ground circuit to the PRB motor hall-effect sensor and receives a sensor signal from the hall-effect sensor.