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SEM (Separately Excited Motor) TECHNOLOGY

Course Description
Upon completion of this course the student will develop the knowledge and skills required to troubleshoot and repair GE transistor electrical control systems efficiently. Equipment using the General Electric computer control system SEM (Separately Excited Motor) technology commonly found in lift trucks and other powered industrial vehicle equipment.

Course Prerequisites
DC Fundamentals for powered industrial vehicles or have equivalent working knowledge.

Course Objectives
The trainee, with the use of schematic drawings, a volt/ohm meter (VOM), and a computer diagnostic handset will program, diagnose, troubleshoot and then repair the GE TRANSISTOR COMPUTER CONTROL SYSTEM SEM (Separately Excited Motor) TECHNOLOGY malfunctions proficiently.
    • Trace the flow of current through the power circuit using colored
       pencils and schematic drawings.
    • Trace the flow of current using colored pencils through schematics’
       sequence of circuit operation to produce cycle of the control circuit.
    • Troubleshoot using VOM and computer diagnostic Yale programs.
    • Verify the safety considerations that must be observed when
       installing, checking or locking out electrical equipment with a hands-on lab.
    • Use the following sections of the Yale service manual: Control 
       features, general maintenance instructions, troubleshooting and checking
       components with the hands-on debugging of equipment.
    • Match symptoms then probable cause for electrical malfunctions
       using hands-on troubleshooting.
    • Demonstrate the usefulness in using a schematic diagram to diagnose,
       troubleshoot and then repair electrical malfunctions with hands-on 
       application and lab equipment.

Intended Audience
Intended for skilled trades, mechanics, supervisors and material handling engineers.

This is a 24 hour ADVANCED Program.

Student Enrollment
To ensure optimum hands-on experience and instructor/trainee interaction, a maximum class size of 6 students is recommended. 

Delivery Method
The Student Performance Objectives will be met through a 50/50 combination of classroom lectures and hands-on lab assignments.
Course materials are presented via maintenance, operation and safety handbook. Stand-up lectures using a whiteboard, overhead transparencies, and handout material.
The plant must provide vehicle equipments.

Industrial Material Handling
Aerial Lift Operator
Forklift Truck Operator 4 hour course
Forklift Truck Operator 8 hour course
Overhead Crane & Hoist Operator
Lift Truck Maintenance 
Transistor Computer Control systems 


220 W. Emerson St. Princeton, In. 47670
Phone (812) 677-2845 Fax 812.386.3004
E-mail: tradestraining@yahoo.com

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