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Ransburg, Front panel controls and indicators – Ransburg Voltage Master 2 78789_LEPS5001 User Manual

Page 32

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FRONT PANEL

CONTROLS AND

INDICATORS

Digital Displays

The KILOVOLTS and MICROAMPS meters are

both 3-½ digit, high intensity LED digital dis-

plays.

The kilovolt meter displays voltage in thousands

of volts (kV) present at the power supply tank

output. The microamp meter displays current in

millionths of amps (µA) leaving the power sup-

ply output.

KV Adjust Knob

When the KV Local/Remote Switch is in the local

position, the KV adjust knob supplies a command

voltage to the Motor Control PC Board. The mo-

tor control board then regulates the high voltage

output accordingly.

KV Local/Remote Switch

When placed in the LOCAL (up position), the KV

output is controlled by the KV ADJUST knob.

When placed in the REMOTE (down position),

the KV output is controlled by the remote analog

input supplied by an external source.

OL Adjust Knob

When the OL Local/Remote Switch is in the local

position, this knob sets the current level at which

the power supply will enter an overload condition.

OL Local/Remote Switch

When placed in the LOCAL (up position), the over-

load setpoint is controlled by the OL ADJUST knob.

When placed in the REMOTE (down position), the

setpoint is controlled by the remote analog input

supplied by an external source.

ACTUAL/SETPOINT Switch

This switch simply determines whether the actual

HV output current or the overload setpoint is dis-

played on the MICROAMPS meter.

KV ON, OFF/RESET Switch

This is a three position, spring return switch for

manually turning high voltage on and off. The OFF

position is also used to reset the power supply in

the event of an overload alarm condition. The

switch is illuminated red when high voltage is ON.

Power ON/OFF Switch

Supplies incoming AC power to the control panel.

The switch is illuminated green to indicate voltage

is present.

Horn

The alarm horn sounds when an overload con-

dition occurs.

Overload Indicator

This indicator glows red when an overload con-

dition occurs.

High Voltage Ready Indicator

This indicator glows yellow when the system is

in ready mode. Ready mode occurs when AC

power is on, high voltage is not yet enabled and

no faults are present.

Overload Range Select Switch

(Refer to Figure 12)

This is a small slide switch located behind the

control panel door on the printed circuit board. It is

identified as SW4, OVERLOAD ADJUST RANGE.

The purpose of this switch is to give the operator

a greater level of adjustment sensitivity at lower

current levels. The switch setting DOES NOT

effect the remote analog control scaling. Placing

this switch in the LOW (up) position results in

a full scale OL current range of approximately

500 microamps. Placing this switch in the HIGH

(bottom) position results in a full scale OL current

range of approximately 1500 microamps. When

using overload setpoints of 500 microamps or

less, the LOW setting allows more resulution of

the µA Adjust Knob potentiometer, so that desired

settings can be more easily obtained.

Voltage Master 2 - Operation

28

Ransburg

CP-02-02.6