INSTALLATION AND OPERATIONIT/IP TRANSISTOR CONTROL Page 1January 2008SEPARATELY EXCITED TRANSISTORIZED TRACTION CONTROLINSTALLATION AND OPERATION MANUALIC3645SR4T405CT1 and IC3645SR7T405CT1Note: The information contained herein is intended to assist OEM's, Dealers and Users of electric vehicles in theapplication, installation and service of GE solid-state controllers. This manual does not purport to cover allvariations in OEM vehicle types. Nor does it provide for every possible contingency to be met involving vehicleinstallation, operation or maintenance. For additional information and/or problem resolution, please refer the matterto the OEM vehicle manufacturer through his normal field service channels. Do not contact GE directly for thisassistance.General Electric Company January 2008Section 1.0 INTRODUCTION .................................................................................................................. 41.1 Motor Characteristics ........................................................................................ 41.2 Solid-State Reversing ....................................................................................... 51.3 Flexible System Application .............................................................................. 51.4 More Features with Fewer Components........................................................... 5Section 2.0 FEATURES OF IT FAMILY OF MOTOR CONTROLLERS................................................. 62.1 Performance...................................................................................................... 62.1.1 Oscillator Card Features............................................................................. 62.1.1.a Standard Operation.............................................................................. 62.1.1.b Creep Speed ........................................................................................ 62.1.1.c Control Acceleration ............................................................................ 62.1.2 Current Limit ............................................................................................... 62.1.3 Braking........................................................................................................ 62.1.3.a Regenerative Braking to Zero Speed................................................... 62.1.3.b Pedal Position Plug Braking................................................................. 62.1.3.c Auto Braking......................................................................................... 62.1.4 Auxiliary Speed Control .............................................................................. 62.1.4.a Field Weakening .................................................................................. 62.1.4.b Speed Limits ........................................................................................ 72.1.5 Ramp Operation ......................................................................................... 7Table of Contents