CHAPTER 9 REPAIR OF DRIVE CONTROL COMPONENTS

TM 10-3930-631-34

CHAPTER 9

REPAIR OF DRIVE CONTROL COMPONENTS

Section I. DESCRIPTION

are not indicated as continous ratings.

Drive

9-1. Description

requirements for the power switch modules are supplied

a. The drive control of the electric fork lift truck is a

by the constant current switching drive

regulator

solid state control. The control is built in modules to

modules.

control the direct current motor load with a battery

b. Protection for the control circuits is provided

powered source. Current rating of the control is 225

by the control circuit module and a temperature sensing

amps for each power switch module. The control

device mounted on the heat

consists of three power switch modules which are

sink of the static panel.

directly connected in parallel to give current ratings of

c. Refer to figures 9-1 and 9-2 for wiring diagram

450 amps and upward in steps of 225 amps. The

and the block diagram of the system.

ratings represent peak current in the control and

9-1