BOC Edwards CV-6SL, Instruction Manual

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4.3 Control "Gun" (Optional)
1. G1-S4 Selector Switch: Provides a readout of the three gun related circuits. The emission
current 0-600mA is high voltage current and requires that both the gun and high voltage
power supplies be ON. The filament current 0-75.0 amperes provides a readout with Gun
ON. The optional position current 0-3.00 amperes is active with the main circuit breaker and
filament breaker closed.
2. G1-R1 Position Control: The calibrated 10-turn potentiometer provides a reference to the
position power supply located on the gun circuit board. The position supply controls the
location of the beam. The position indicator illuminates when the beam is positioned
within a window determined by the low/high position potentiometers located on the gun
circuit board. The position indicator must be illuminated for operation to start.
NOTE: The position controls are standard on all GUN control panels. The position supply
located on the "Filament Supply PCB" must be ordered as an option.
3. G1-R3 Bias: The bias control adjusts the filament current prior to high voltage turn on.
When high voltage is turned ON, the filament reference transfers to emission current
regulation and the emission current 10-turn control. The correct bias level is adjusted for
long filament life and smooth transfer between filament current feedback and emission
current feedback.
4. G1-R2 Emission Current Adjustment: The emission Current potentiometer is used as a
reference for high voltage current during system operation. The impedance of the load is
determined by the temperature of the filament with high voltage ON.
5. G1-S2 Gun On: The gun can be turned ON at anytime, but the sequence of Gun ON then
high voltage ON is the most appropriate. There is a series of interlocks that must be satisfied
before the gun can be turned on. All interlocks must close for a ready to turn Gun ON
condition. The following is a list of the interlocks:
When a remote position supply is used, its contacts, indicating the beam position is correct,
should close - G1-J2 Yellow-Red.
•
Remote Gun OFF Switch G1-J2 Green-Black Wires
Must be jumpered for operation
•
Gun Off Switch G1-S1 Gun Control Panel
•
Tank Interlock G1-J2 Orange-Black
•
Vacuum Interlock G1-J2 White-Red
•
Auxiliary Interlock G1-J2 Green-Red
•
Water Interlock G1-J2 Blue-Red
•
When the position Power Supply is within a window and with all the interlocks closed,
we have a Gun Ready for turn ON. G1-I2 in the off switch is illuminated.
G1-I1 Gun On: The Gun On indicator will be illuminated when the gun has been turned
on.