DEI PVX-4000-2kV-EX User manual

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PVX-4000-2kV-EX
Pulsed Voltage Source
Operation Manual
Directed Energy, Inc.
1609 Oakridge Dr., Suite 100, Fort Collins, CO 80525
[phone]
[email protected]
www.ixyscolorado.com
Manual Document 7650-0024 Rev. A02
© Copyright 2017 IXYS Colorado. All rights reserved.

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Contents
Contents....................................................................................................................................................................3
Safety.........................................................................................................................................................................5
Introduction...............................................................................................................................................................6
Description....................................................................................................................................................6
FrontPanelFeatures.....................................................................................................................................7
RearPanelFeatures.......................................................................................................................................9
AccessoriesIncluded...................................................................................................................................10
OperatingConsiderations........................................................................................................................................11
OutputCabling.............................................................................................................................................11
PulseVoltages..............................................................................................................................................11
TriggerMethod............................................................................................................................................11
LocalOperation.......................................................................................................................................................12
LocalMode..................................................................................................................................................12
Setup............................................................................................................................................................12
PowerUp.....................................................................................................................................................13
SettheOutputVoltage................................................................................................................................13
SettheTriggerType.....................................................................................................................................13
SettheFrequency........................................................................................................................................13
SetthePulseWidth.....................................................................................................................................14
EnableSystemOutput.................................................................................................................................14
PowerDown................................................................................................................................................15
SaveSystemSetup.......................................................................................................................................15
RestoreSystemSetup..................................................................................................................................15
RemoteOperation...................................................................................................................................................16
RemoteMode..............................................................................................................................................16
CommandList..............................................................................................................................................17

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FaultCodes..................................................................................................................................................19
WarrantyandService..............................................................................................................................................20
Warranty......................................................................................................................................................20
FactoryServiceandSupport........................................................................................................................21
DeclarationofConformity.......................................................................................................................................22
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For more information contact IXYS Colorado: 970.493.1901 or [email protected]
Document#7650‐0024RevA02.©Copyright2017IXYSColorado.Allrightsreserved.
Safety
Always refer to the Safe Operating Area (SOA) of the PVX-4000-2kV-EX system, located
in the datasheet.
Do not open the cover of the PVX-4000-2kV-EX. There are no user-serviceable parts
inside. Opening the cover exposes you to shock and voids the factory warranty.
Do not install, handle, or remove the output cables or load while the PVX-4000-2kV-EX
is operating. Allow at least 10 minutes after powering down before handling the output
cable or load.
Do not use this device in a manner not specified by the manufacturer.
Allow sufficient space around this device for air circulation.
Do not use where liquids are present or in corrosive environments. Clean this instrument
by wiping with a dry or damp cloth.
WARNING
Risk of lethal electric shock. Do not open the cabinet of this device. Do not touch the
output or load while it is operating. This device produces LETHAL levels of electric
current, both inside its cabinet and at its output.
DO NOT OPERATE THIS DEVICE UNLESS ANOTHER PERSON, CAPABLE OF RENDERING
FIRST AID OR RESUSCITATION, IS PRESENT.
SAFE AND PROPER OPERATION OF THIS DEVICE IS THE RESPONSIBILITY OF THE
USER.
Directed Energy, Inc. (DEI) provides information on its products and associated hazards, but it
assumes no responsibility for the after-sale operation and safety practices.
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For more information contact IXYS Colorado: 970.493.1901 or sal[email protected]
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Introduction
Description
The PVX-4000-2kV-EX is an air-cooled pulse generator that produces high voltage
waveforms. Optimized for high-impedance capacitive loads, the PVX-4000-2kV-EX is well
suited for driving extraction grids and deflection plates for electrostatic modulation of particle
beams in time-of-flight mass spectrometers and accelerators. The system is capable of duty
cycles from 2% to 98% and repetition rates from 40 Hz to 30,000 Hz using the internal trigger.
With the external trigger the system is capable of single shot to 600 kHz with a pulse width
of 500 ns to 100% duty cycle.
The PVX-4000-2kV-EX requires external high-voltage power supply sources from 0 V to
±2000 V. For example, a +1000 V supply can be connected to the positive voltage input, and
a -1000 V supply can be connected to the negative voltage input, for a total of 2000 V. It is
the customer responsibility to verify the high-voltage power supplies do not exceed the total
of 2000 V.
ThepositiveandnegativehighvoltageinputlevelsmustNOTexceed2000Vtotal.Reducethe
highvoltageinputoneitherchanneltoachieve≤2000V.Usethebelowformula:
Vpositive+|Vnegative|≤2000V
Conveniently-located front panel BNC connectors allow the PVX-4000-2kV-EX to be
externally gated and synchronized for specialized interconnected equipment applications.
The external gate input impedance and the sync output impedance are both 50 . The sync
output pulse is synchronized to the leading edge of the output voltage pulse and is active
with the either internal or external trigger.
The PVX-4000-2kV-EX has a pulse generator incorporated into the system. This provides a
test system that can be programmed to perform device testing using the front panel LCD
controls or a computer interface (RS-232 and USB).
When changing the frequency, the duty cycle will be maintained. The system will display the
new pulse width that changes to maintain the duty cycle. It is recommended to change the
frequency before changing the pulse width.
Up to five user configurations may be stored in internal nonvolatile memory and recalled
through the front panel or communications interface. The first memory location stores the
power-up default parameters.

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All error and fault messages are reported on the front panel display and are also available
via the computer communications interface. Analog voltage monitors are also provided for
monitoring the voltage to the load using an external oscilloscope.
Front Panel Features
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Power LED
The Power LED is lit when there is support power applied to the PVX-4000-2kV-EX.
Fault LED
The Fault LED is lit when there is a fault/error sensed within the system.
Enable LED
The Enable LED is lit, and the system output is enabled, when all the following conditions
are met:
There are no faults
The enable BNC connection is made
The enable button has been pressed
Enable Button
The Enable button, press this button to enable and disable the system output.
Home Button
The Home button, press this button to return to the main menu, once all parameters have
been set to the user values.

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Document#7650‐0024RevA02.©Copyright2017IXYSColorado.Allrightsreserved.
Encoder Knob
The encoder changes the values of the displayed parameters.
LED Display
The display shows system information on the home screen. It is used in conjunction with the
encoder.
Enable Input
The Enable BNC input accepts either an external dry-contact closure or the factory-supplied
shorting BNC plug (PCA-9410).
Closed contacts or use of the shorting plug allows the output to be enabled. Less than
1000 will allow the system to be enabled.
Open contacts or removal of the shorting plug disables the output and creates a fault.
Greater than 1 Mwill disable the system.
Voltage Monitor Output
The Voltage Monitor (VMON) BNC output allows the user to monitor the voltage and signal of
the output cable. The VMON voltage is linearly scaled with a ratio of 10:1000. For example,
1000 V at the output corresponds to 10 V on VMON.The oscilloscope termination should be
set to 1 M.
Gate Input
The Gate (external gate) BNC input accepts trigger pulses from an external source. Its input
impedance is 50 and it should be driven with a 5 V logic level source. The frequency range
is single shot to 600 kHz and the pulse width is 500 ns to DC.
Sync Output
The Sync BNC output provides synchronization pulses for external devices. The sync pulse
corresponds to the leading edge of the output pulse. Its impedance is 50 with voltage levels
of 0 V to > +3.3 V.
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Document#7650‐0024RevA02.©Copyright2017IXYSColorado.Allrightsreserved.
Rear Panel Features
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Pulsed Output
A Winchester Kings 10 kV, 1065-2 plug is the output connection for system-generated
voltage pulses. DO NOT TOUCH any part of this output or cable while the PVX-4000-2kV-
EX is powered up and enabled. Please review the Safety section.
Positive High Voltage Input
A Winchester Kings 10 kV, 1065-2 plug is the input connection for the customer-provided
positive high voltage power supply. DO NOT TOUCH any part of this input or cable while the
PVX-4000-2kV-EX is powered up and enabled. Please review the Safety section.
Negative High Voltage Input
A Winchester Kings 10 kV, 1065-2 plug is the input connection for the customer-provided
negative high voltage power supply. DO NOT TOUCH any part of this input or cable while
the PVX-4000-2kV-EX is powered up and enabled. Please review the Safety section.
Power Cord Connector
The power cord connector accepts a type NEMA C14 grounding equipment power cord.
On/Off Power Switch
The On/Off switch turns the PVX-4000-2kV-EX support power on and off.
Communication
The system can communicate with a computer using USB or RS-232 for automated program
operation.
The RS-232 Interface operates with settings of 115,200 baud, 8 data bits, 1 stop bit,
no parity, and no flow control.
The USB Interface operates as a COM port with settings of 115,200 baud, 8 data
bits, 1 stop bit, no parity, and no flow control. The driver can be found on our website.
When switching communication from RS-232 to USB, no power cycle is needed.

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Document#7650‐0024RevA02.©Copyright2017IXYSColorado.Allrightsreserved.
When switching communication from USB to RS-232, the PVX-4000-2kV-EX must be
power cycled.
Accessories Included
AC Power Cord
The factory-supplied power cord is a type NEMA C14 grounding equipment power cord.
Pulsed Output Cable
The output cable (PCA-9400) is used to connect the PVX-4000-2kV-EX to the load and is
two meters in length. The factory supplied output cable has 1.57 pF / 1.0 cm of cable. This
needs to be calculated into the total load value.
DC Voltage Input Cables
The input cables (PCA-9400) are used to connect the PVX-4000-2kV-EX to the customer
provided high voltage power supplies and are two meters in length. If the customer is only
using one polarity of high voltage power supply, then the customer should short the other
polarity to the chassis, this is to ensure the other polarity is not floating above or below
ground.