Section 8.Theory of Operation

Pinout Matrix

152JPT3-1STEER POSITION A (S8)

Output of Home Sensor Prox. used by the STM to determine if the drive unit is CW or CCW of center. When over metal (CW), the switch is cl osed and the output is low. When not over metal (CCW), the switch is open and the output is hi.

153JPT3-3DGNDDGND is the B– for the Steer Position Prox. switch (S8). It is connected through the STM via B– cable at the TPA.

Model 5200 High-Level Orderpicker

Over metal= less than 1V

Not over metal= 6.5V

Steer Position Prox.

Steer Controller Card

<0.5VDC wrt TP4 (B–) Steer Position Prox.

STM

154JPT2-1NCNot connected to any circuitry on the STM. NANANA

155JPT2-3DGNDThe B– for the Guidance Manager. It is connected through the STM.

156JPT2-4BUS+The wire that carries the positive component of the digital communications between the STM and the Guidance Manager. No usable information can be gained by measuring the voltage on this wire.

157JPT2-2BUS-The wire that carries the negative component of the digital communications between the STM and the Guidance Manager. No usable information can be gained by measuring the voltage on this wire.

<0.5VDC wrt TP4 (B–) STMSteer Controller Card

No useful voltages are measurable

/ WGM STM / WGM

No useful voltages are measurable

/

B– when the CM wants it turned

Publication Number: 1043922B, Revised: 2 Sept 2015