© 12/2006 UltraVolt HV Rack System Installation and Operators Manual, Rev A
17 of 23
OPERATION USING REMOTE CONTROL
WARNING:
ENABLING REMOTE CONTROL DISABLES FRONT-PANEL CHANNEL
CONTROLS:
HV ON,
VOLTAGE PROGRAMMING DIAL, CURRENT
PROGRAMMING
DIAL
,
VOLTAGE/CURRENT PRESET SWITCH
. PRIOR TO
APPLYING AC POWER TO THE HV RACK POWER SUPPLY, ENSURE THE
EXTERNAL CONTROLLER IS FUNCTIONING AND COMMUNICATING
PROPERLY WITH THE HV RACK POWER SUPPLY AND IT IS IN A
KNOWN STATE OF OPERATION AND CONTROL. FAILURE TO DO SO
MAY CREATE A CONDITION THAT CAN RESULT IN PERSONAL INJURY
OR LOSS OF LIFE AND/OR DAMAGE TO EQUIPMENT OR OTHER
PROPERTY.
All functions of the
UltraVolt HV Rack
®
power supply can be controlled remotely through use of the 37-pin
Remote Control Connector
mounted on the rear panel. Remote control is enabled by setting the
Remote Control
Selector DIP Switch
(see rear-panel figure for the location of the DIP switch). To enable, set the rear-panel DIP
switch 2 to ON (on = 1) prior to applying AC power. When remote is enabled, the status indicator, ‘remote,’
located on the upper right-hand corner of the front panel will illuminate.
Appendix B of this manual describes the I/O control and status signals accessible on each pin of the 37-pin
connector. It is the responsibility of the end user to wire the interface connector correctly and, importantly, to
understand the functionality of each I/O control and status signal as it applies to the operation and use of the
UltraVolt HV Rack
system in its intended application. The end user is encouraged to consult with an UltraVolt
Customer Service Department Applications Engineer. The following is a description of the I/O control and
status signals available for each channel:
Remote Enable A
{B/C/D}: This is a digital input signal, TTL level, that when asserted True (+5VDC)
enables the high voltage output. It performs the same function as the front-panel switch,
HV ON
. When a
channel is remotely enabled, the
Channel Output Enable Switch, HV ON
for that channel will illuminate.
Output voltage and current can be programmed prior to enabling the high-voltage output remotely. Once
the high-voltage channel has been enabled, either the
Voltage Regulation Indicator
or
Current
Regulation
Indicator
will illuminate on the front panel. Which indicator is illuminated is dependent upon
output load and voltage/current preset settings and is automatically determined by the
UltraVolt HV
Rack
system’s ‘
automatic-crossover’
feature.
Remote Voltage Adj A
{B/C/D}: This is an analog input signal and is used to adjust the high-voltage output
voltage. A DC voltage can be applied within the range of 0VDC thru 5VDC, representing a high-voltage
output swing of 0% V
out
thru 108% V
out
with 4.64VDC input equal to 100% V
out
. The
HV Rack
power
supply’s
front-panel
Voltage Monitor/Voltage Preset Meter
and the
Voltage Scale Indicator
will display
the actual voltage.
Remote Current Adj A
{B/C/D}: This is an analog input signal and is used to adjust the high-voltage output
current. A DC voltage can be applied within the range of 0VDC thru 5VDC, representing an output
current swing of 0% I
out
thru 108% I
out
, with 4.64VDC input equal to 100% I
out
. The
UltraVolt HV Rack
system’s front-panel
Current Monitor/Current Preset Meter
and
Current Scale Indicator
will display the
actual current.
Remote Voltage Monitor A
{B/C/D}: This is a scaled analog output signal and can be used to monitor the
high-voltage output voltage remotely. The signal’s range is 0VDC thru 5VDC, representing an output
voltage swing of 0% V
out
thru 108% V
out
with 4.64VDC output equal to 100% V
out
.
Remote Current Monitor A
{B/C/D}: This is a scaled analog output signal and can be used to monitor the
high-voltage output current remotely. The signal’s range is 0VDC thru 5VDC, representing an output
current swing of 0% I
out
thru 108% I
out
with 4.64VDC output equal to 100% I
out
.
