Sequence 1. Drive Control

Section 1. EV-T5 Control Sequence of Operations

This sequence of operation is designed to provide a complete step-by-step description of the operation of Clark lift trucks equipped with GE model EV-T5 MOSFET control. Please read each operation sequence and then trace the sequence onto the diagram as described.

If you will follow the steps carefully, and not skip around you should be familiar with the entire operation of the lift truck electrical system. Then, if you wish to review any particular part or sequence, consult the Table of Contents and refer to the particular sequences involved. Identification of Abbreviations

The following abbreviations are used in the text and in the wiring schematics: A B.D.I. 1A IC F FWD FU HM p L FET R REV FIL SW CTP FTP Armature Battery Discharge Indicator Bypass Contactor Assembly Capacitor Forward Contactor Assembly Forward Directional Switch Fuse Hour Meter Main Pump Contactor Assembly Line Contactor Assembly Field Effect Transistor Reverse Contactor Assembly Reverse Directional Switch Filter Switch Thermal Protector [ Capacitor ] Thermal Protector [ Fets ]

Identification of Schematic Symbols

The following symbols are used on the wiring schematic:

..L. ---� MOMENTARY SW1TCH � NORMALLY OPEN SWITCH a ,. NORMALLY CLOSED SWITCH ___..d'"'� NORMALLY CLOSED SWITCH HELO OPEN NORMALLY OPEN SWITCH HELD CLOSED .., a NORMALLY CLOSED POWER POINTS ---..,.-- NORMALLY OPEN POWER POINTS

H PLUG-IN CONNECTION ---1:J- FUSE

-c::J-- RESISTOR --"r-- COIL (CONT ACTOR COIL OR RELAY COIL) �•@A•; PERNINENT MAGNET MOTOR MOTOR ARMATURE INDUCTOR (MOTOR FIELD, REACTOR, CHOKE, ETC.) THERMAL PROTECTOR

Lr' ,

MOSFET or FET (Metal Oxcld• Semiconductor Fleld Effect Transletor) DIODE --;E-- CAPACITOR -w CURRENT MONITORING SHUNT

� VARRIABLE RESISTOR {ACCELERATOR) -- - --J HORN

TW1STEO PAIR WIRES