INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL Page 1
August 2001
SEPARATELY EXCITED (SX) TRANSISTORIZED MOTOR CONTROLLERS
FOR NEIGHBORHOOD ELECTRIC VEHICLE APPLICATION
INSTALLATION AND OPERATION MANUAL
(GE MODEL IC3645SH7R353T1)
Note: The information contained herein is intended to assist OEM's, Dealers and Users of electric vehicles in the application,
installation and service of GE solid-state controllers. This manual does not purport to cover all variations in OEM vehicle types.
Nor does it provide for every possible contingency to be met involving vehicle installation, operation or maintenance. For
additional information and/or problem resolution, please refer the matter to the OEM vehicle manufacturer through his normal
field service channels. Do not contact GE directly for this assistance.
General Electric Company August 2001
Section 1.0 INTRODUCTION ........................................................................................................................................................3
1.1 Motor Characteristics.............................................................................................................. 3
1.2 Solid-State Reversing............................................................................................................... 4
1.3 Flexible System Application..................................................................................................... 4
1.4 More Features with Fewer Components................................................................................ 4
Section 2.0 FEATURES OF SX FAMILY OF MOTOR CONTROLLERS ....................................................................................5
2.1 Performance.............................................................................................................................. 5
2.1.1 Oscillator Card Features.................................................................................................. 5
2.1.1.a Standard Operation................................................................................................... 5
2.1.1.b Control Acceleration ................................................................................................5
2.1.2 Current Limit...................................................................................................................... 5
2.1.3 Plug Braking...................................................................................................................... 5
2.1.4 Auxiliary Speed Control.................................................................................................... 5
2.1.4.a Field Weakening........................................................................................................ 5
2.1.4.b Speed Limits .............................................................................................................. 5
2.1.4.c Top Speed Regulation ...............................................................................................5
2.1.5 Ramp Start......................................................................................................................... 6
2.1.6 On-Board Coil Drivers and Internal Coil Suppression .................................................6
2.2 System Protective Override..................................................................................................... 6
2.2.1 Static Return to Off (SRO) ...............................................................................................6
2.2.2 Accelerator Volts Hold Off...............................................................................................6
2.2.3 Pulse Monitor Trip (PMT)................................................................................................. 6
2.2.4 Thermal Protector (TP)..................................................................................................... 6
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