Graham 1703 Series - Page 5

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7.3 SWITCH SW3 ............................................................................25
7.3.1 COAST .......................................................................................25
7.3.2 REVERSE ..................................................................................25
7.3.3 60HZ...........................................................................................25
7.3.4 Output Voltages.........................................................................25
7.4 Standard Switch Configuration................................................26
Section 8.Section 8.
Section 8.Section 8.
Section 8.
Start-up and Calibration ProceduresStart-up and Calibration Procedures
Start-up and Calibration ProceduresStart-up and Calibration Procedures
Start-up and Calibration Procedures
8.1 Pre-Check Sequence..................................................................27
8.2 Calibration Procedure ...............................................................27
Section 9.Section 9.
Section 9.Section 9.
Section 9.
Service InformationService Information
Service InformationService Information
Service Information
9.1 Introduction ...............................................................................29
9.2 Description of Operation...........................................................29
9.3 Troubleshooting.........................................................................29
9.4 Minimum Recommended Test Equipment ..............................31
9.5 Diode, Transistor and SCR Test ...............................................31
9.5.1 Diode, Transistor and SCR Testing..........................................31
9.6 Doide, Transistor and SCR Replacement.................................33
9.6.1 Input SCR Modules ...................................................................33
9.6.2 Output SCR Modules ................................................................33
9.6.3 Output Diode Bridge .................................................................33
9.6.4 Free-Wheeling Diode.................................................................33
9.6.5 Conduction/Commutation Transistor Module .........................33
9.7 Power Up Sequence...................................................................33
9.8 Power Supply on the Control Board.........................................33
9.9 Output Checks...........................................................................34
Troubleshooting Flow Chart ......................................................................35
List of IllustrationsList of Illustrations
List of IllustrationsList of Illustrations
List of Illustrations
Typical 1703 Series...................................................................................... 3
Typical Older 1703 Series, 21 Amps and Below, Customer Connections. 5
Typical 1703 Series, Customer Connections .............................................. 6
Control Board .............................................................................................17
Control Chip Board, drawing.....................................................................18
Control Chip Board, photo .........................................................................21
Display Board, drawing .............................................................................22
Remote Speed Signal Calibration on Control Board ................................28
Control Board Swung Open .......................................................................30
Input/Output SCRs ....................................................................................31
Output Diode Bridge Module.....................................................................32
Conduction/Commutation Transistor Module ..........................................32