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CONTROLS, INDICATORS, CONNECTORS
5.3.1
HV ON LED
The HV ON LED indicates that the HV output circuit is enabled and the supply will deliv-
er output current if it is not inhibited by an external inhibit input. HV ON LED is active in
local and remote modes.
5.3.2
HV OFF LED
The HV OFF LED indicates that the HV output circuit is disabled and the supply cannot
deliver output current. HV OFF LED is active in local and remote modes.
5.3.3
INHIBIT LED
If the Inhibit LED is illuminated it indicates the presence of an active inhibit signal, and
the supply will not deliver charging current after the HV ON button is pushed. Inhibit is
applied either via the rear panel mounted BNC connector or via the remote control con-
nector, do not use both inputs at the same time. Inhibit LED is active in local and remote
modes.
5.3.4
END OF CHARGE LED
The END OF CHARGE indicator will illuminate when the load capacitor is charged to the
programmed output voltage. The END OF CHARGE indicator will be extinguished when
the high voltage is OFF or during load charging. END OF CHARGE may illuminate if
the output voltage is programmed to zero.
5.3.5
INTERLOCK OPEN LED
The INTERLOCK OPEN LED illuminates if the safety interlock circuit is not closed. The
power supply cannot be turned on if the interlock loop is open. If the interlock loop is
opened when the unit is running (ie when HV in ON), the unit will turn off with a latching
fault, requiring an HV ON/OFF reset cycle before it can be restarted. Interlock Open
LED is active in local and remote modes.
5.3.6
LOAD FAULT LED
The LOAD FAULT LED indicates the presence of a fault in the load circuit due to a short
circuit or large external capacitor. LOAD FAULT is activated if the charge voltage does
not meet the programmed voltage within 500milliseconds. The fault automatically clears
and the unit will restart charging after a further 500milliseconds unless the Latching Pro-
tection (LP) option is specified. Load Fault LED is active in local and remote modes.
5.3.7
OVERTEMP LED
The OVERTEMP LED indicates an overtemperature condition internal to the supply. The
temp fault will clear once the temperature is below the fault threshold, but the unit will
not restart without a reset cycle. Overtemp LED is active in local and remote modes.
5.4
LOCAL VOLTAGE CONTROL (Ref 3)
The LOCAL VOLTAGE CONTROL is a 10 turn potentiometer that adjusts the output
voltage between zero and 100% of rated voltage. The set point can be viewed on the
VOLTAGE DISPLAY by pushing the VIEW SET button. The output voltage can be set at
the desired level by turning the control to the required output voltage before depressing
the HV ON push button. It is good practice to turn the control fully counter clockwise af-
ter operating the supply. The local voltage control has no effect when the supply is op-
erate in remote mode.
83489011 Rev A
5-3
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