Instruction manual

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3. OPERATION
3.1. GENERAL
The AC Power System may be programmed from the front panel or through the IEEE-488
remote interface. The rear panel of the AC Power System holds the power input and output
terminals, external sense connector, system interface connector, IEEE-488 interface
connector and the chassis ground stud.
3.2. FRONT PANEL CONTROLS
All front panel controls are shown in Figure 3-1. The front panel has two subpanels. A
voltmeter selector switch is located on the left subpanel. The three position switch causes
the AC voltmeter to indicate the output of one of the three output phases.
A circuit breaker is located on the left side of the front panel. The circuit breaker is used to
switch power to the unit.
The right subpanel has a keypad and a viewing angle adjustment. The 20-key keypad allows
the power source to be manually programmed at the front panel. The knob labeled VIEW
ANGLE may be turned to adjust the contrast of the front panel display.
3.3. FRONT PANEL INDICATORS
The left subpanel has the following indicators: POWER ON, MODULE FAILURE,
OVERTEMP, OUTPUT FAULT, and an analog voltmeter.
The POWER ON lamp illuminates when power is applied and the circuit breaker is on.
The MODULE FAULT indicator illuminates when one of the power modules in the system
has malfunctioned.
The OVERTEMP lamp illuminates when the power module operating temperature exceeds
its maximum safe temperature.
The OUTPUT FAULT indicator illuminates when the output voltage of the power source
does not match with the programmed value.
An analog voltmeter, that indicates from 0 to 300 volts, shows the actual voltage of the
phase A, B, and C outputs. The phase is determined by a three position toggle switch below
the meter.