Hyster R40EH (C176) Forklift Service Manual

Hyster R40EH (C176) Forklift Index:

EV-IOO MOTOR CONTROLLER, DESCRIPTION AND OPERATION
GENERAL
ELECTRONIC SPEED CONIROLS
The Silicon Controlled Rectifier (SCR)
A Motor Circuit That Operates With Pulses
Traction Circuit .
Hydraulic Motor Circuit
The SCR 1 “OFF” Circuit .
INDUCTION CURRENT FROM THE MOTOR
THE CONTROL CARD
Pulse Monitor Trip (PMT) (Traction Circuit Only)
SRO Circuit (Traction Circuit Only) .
Control Card Adjustments (Traction Circuit)
Accelerator Control
Dual Motor “Plugging” 025-35B)
SCR CONTROL (HYDRAULIC PUMP MOTOR) .
CONTACTORS AND ELECTRONIC DRIVERS (TRACTION CIRCUIT)
The Electronic Drivers
Contactors
CIRCUIT PROTECTION
Current Limit .
Thermal Protection
Suppressors
Traction Circuit Fuse ..
SEQUENCE OF OPERATION .

INTRODUCTION .
GENERAL
SRO CIRCUIT AND PMT CIRCUIT (TRACTION CIRCUIT)
STATIC RETURN TO OFF (SRO) CIRCUIT .
PULSE MONITOR TRIP (PMT)
THE SEQUENCE OF OPERATION (TRACTION CIRCUIT)
CHECKING FOR THE CORRECT OPERATION .
TROUBLESHOOTING
GENERAL PROCEDURES .
FAULT NUMBER I. The Direction Contactors Will Not Close For Operation In
Either Direction.
LIFT TRUCKS WITHOUT REGENERATIVE BRAKING

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