Systems Overview
Toyota Orderpicker Service Manual
Steer Controller Guidance System
Controller Card. The Steer Controller Card then powers the steer motor to steer the drive unit. Speed Feedback Proximity Sensors (SPl and SP2)
The Speed Feedback Proximity Sensors determine the speed and direction of rotation of the drive motor. They are used in conjunction with the holes in the brake drum to produce a quadrature signal that is sent to the steer controller. The characteristic pulses of the quadrature signal are produced as the proximity sensors read either the metal or void of the rotating brake drum.
3-16
00700-CL221 Issued: 9/1 0/98