6
Overvoltage Protection (OVP) Circuit............................................................................................................................49
Power-Limit Comparator................................................................................................................................................49
Control-Voltage Comparator..........................................................................................................................................49
Initial-Ramp Circuit........................................................................................................................................................50
Pulse-Width Modulator (PWM)..................................................................................................................................... 50
Bias Voltage Detector.....................................................................................................................................................50
AC-Surge Dropout Detector...........................................................................................................................................50
1-Second-Delay Circuit.................................................................................................................................................. 51
Display Circuits.................................................................................................................................................................. 51
Replaceable Parts..................................................................................................................................................................53
Introduction.........................................................................................................................................................................53
Ordering Information..........................................................................................................................................................54
Component Location and Circuit Diagrams...................................................................................................................... 69
System Option 002................................................................................................................................................................79
General Information............................................................................................................................................................79
Specifications..................................................................................................................................................................79
Option 002 Hardware......................................................................................................................................................79
Installation.......................................................................................................................................................................... 83
Connector Assembly Procedure......................................................................................................................................83
Operation............................................................................................................................................................................ 84
Local/Remote Programming...........................................................................................................................................85
Remote Resistance Programming...................................................................................................................................87
Remote Monitoring.........................................................................................................................................................89
Status Indicators..............................................................................................................................................................90
Remote Control...............................................................................................................................................................90
Power-On Preset.................................................................................................................................................................92
AC Dropout Buffer Circuit.............................................................................................................................................93
Multiple Supply System Shutdown................................................................................................................................ 93
Bias Supplies.................................................................................................................................................................. 94
Maintenance........................................................................................................................................................................94
Troubleshooting..............................................................................................................................................................95
Troubleshooting Resistance and Voltage Programming.................................................................................................95
Troubleshooting Current Programming..........................................................................................................................95
Backdating...........................................................................................................................................................................107