Patent ID: 9712269
Date: 2017-07-18
CPC Classifications: F21V,F21W,H04H,H05B,Y02D

Claim:
1. An electric fader drive unit comprising: a drive portion that drives an electric fader by supplying drive power to the electric fader; a fader position control portion that indicates a target position of the electric fader; and an electric fader control portion that receives an indication of the target position from the fader position control portion and controls the drive portion to move the electric fader to the target position, wherein: the fader position control portion detects a distance between a current position of the electric fader and the target position, indicates a high speed movement mode as an operation mode in a case in which the distance is not less than a predetermined value, and indicates a silent movement mode as the operation mode in a case in which the distance is less than the predetermined value; and the electric fader control portion controls the drive portion to change the drive power to silent drive power not less than minimum drive power that is a lowest drive power required for moving the electric fader in a case in which the fader position control portion indicates the silent movement mode, and controls the drive portion to change the drive power to base drive power more than the silent drive power in a case in which the fader position control portion indicates the high speed movement mode.