INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL Page 1
July 1999
SEPARATELY EXCITED (SX) TRANSISTORIZED DUAL MOTOR CONTROLLERS
INSTALLATION AND OPERATION MANUAL
(IC3645SR3R404P2 & IC3645SR3R404P3)
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.
Copyright by General Electric Company July 1999
Section 1.0 INTRODUCTION .......................................................................................................... 4
1.1 Motor Characteristics.................................................................................. 4
1.2 Solid-State Reversing.................................................................................. 5
1.3 Flexible System Application ........................................................................ 5
1.4 More Features with Fewer Components........................................................ 5
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 Proportional Operation for Dual Motor Vehicles.................................. 6
2.1.1.c Creep Speed.................................................................................. 6
2.1.1.d Control Acceleration and 1A Time .................................................... 6
2.1.2 Current Limit ........................................................................................ 6
2.1.3 Braking................................................................................................ 7
2.1.3.a Plug Braking .................................................................................. 7
2.1.3.b Regenerative Braking to Zero Speed................................................. 7
2.1.3.c Pedal Position Plug Braking ............................................................ 7
2.1.4 Auxiliary Speed Control......................................................................... 7
2.1.4.a Field Weakening............................................................................. 7
2.1.4.b Speed Limits ................................................................................. 7
2.1.5 Ramp Operation ................................................................................... 7
2.1.5.a Ramp Start .................................................................................... 7
2.1.5.b Anti-Rollback.................................................................................. 7
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