Spellman CZE Series User manual

R
High Voltage Power Supply
MODEL:
SERIAL#:
DATE:
SPELLMAN
HIGH VOLTAGE ELECTRONICS
CORPORATION
475 Wireless Blvd.
Hauppauge, New York, 11788
[phone]*FAX: [phone]*
E-mail: [email protected]
Website: www.spellmanhv.com
CZE MANUAL 118031-001 Rev D
CZE SERIES

IMPORTANT SAFETY PRECAUTIONS
SAFETY
THIS POWER SUPPLY GENERATES VOLTAGES THAT ARE DANGEROUS AND MAY BE FATAL.
OBSERVE EXTREME CAUTION WHEN WORKING WITH THIS EQUIPMENT.
High voltage power supplies must always be grounded.
Do not touch connections unless the equipment is off and the
Capacitance of both the load and power supply is discharged.
Allow five minutes for discharge of internal capacitance of the power supply.
Do not ground yourself or work under wet or damp conditions.
SERVICING SAFETY
.
Maintenance may require removing the instrument cover with the power on.
Servicing should be done by qualified personnel aware of the electrical hazards.
WARNING note in the text call attention to hazards in operation of these units
that could lead to possible injury or death.
CAUTION notes in the text indicate procedures to be followed to avoid possible
damage to equipment.
Copyright ©2000, Spellman High Voltage Electronics Corporation. All Rights Reserved.
This information contained in this publication is derived in part from proprietary and patent data. This information has
been prepared for the express purpose of assisting operating and maintenance personnel in the efficient use of the
model described herein, and publication of this information does not convey any right to reproduce it or to use it for
any purpose other than in connection with installation, operation, and maintenance of the equipment described.
118004-001 REV. B

WICHTIGE SICHERHEITSHINWEISE
SICHERHEIT
DIESES HOCHSPANNUNGSNETZTEIL ERZEUGT LEBENSGEFÄHRLICHE HOCHSPANNUNG.
SEIN SIE SEHR VORSICHTIG BEI DER ARBEIT MIT DIESEM GERÄT.
Das Hochspannungsnetzteil muß immer geerdet sein.
Berühren Sie die Stecker des Netzteiles nur, wenn das Gerät ausgeschaltet ist und die elektrischen
Kapazitäten des Netzteiles und der angeschlossenen Last entladen sind.
Die internen Kapazitäten des Hochspannungsnetzteiles benötigen ca. 5 Minuten, um sich zu entladen.
Erden Sie sich nicht, und arbeiten Sie nicht in feuchter oder nasser Umgebung.
Notwendige Reparaturen können es erforderlich machen, den Gehäusedeckel während des Betriebes zu
entfernen.
Reparaturen dürfen nur von qualifiziertem, eingewiesenem Personal ausgeführt werden.
“WARNING” im folgenden Text weist auf gefährliche Operationen hin, die zu Verletzungen oder zum Tod
führen können.
“CAUTION” im folgenden Text weist auf Prozeduren hin, die genauestens befolgt werden müssen, um
eventuelle Beschädigungen des Gerätes zu vermeiden.
SERVICESICHERHEIT
118004-001 REV. B

PRECAUTIONS IMPORTANTES POUR VOTRE SECURITE
CONSIGNES DE SÉCURITÉ
CETTE ALIMENTATION GÉNÈRE DES TENSIONS QUI SONT DANGEUREUSES ET PEUVENT ÊTRE FATALES.
SOYEZ EXTRÊMENT VIGILANTS LORSQUE VOUS UTILISEZ CET ÉQUIPEMENT.
Les alimentations haute tension doivent toujours être mises à la masse.
Ne touchez pas les connectiques sans que l’équipement soit éteint et que la capacité à la fois de la charge et de
l’alimentation soient déchargées.
Prévoyez 5 minutes pour la décharge de la capacité interne de l’alimentation.
Ne vous mettez pas à la masse, ou ne travaillez pas sous conditions mouillées ou humides.
La maintenance peut nécessiter l’enlèvement du couvercle lorsque l’alimentation est encore allumée.
Les réparations doivent être effectuées par une personne qualifiée et connaissant les risques électriques.
Dans le manuel, les notes marquées « WARNING » attire l’attention sur les risques lors de la manipulation de ces
équipements, qui peuvent entrainer de possibles blessures voire la mort.
Dans le manuel, les notes marquées « CAUTION » indiquent les procédures qui doivent être suivies afin d’éviter
d’éventuels dommages sur l’équipement.
CONSIGNES DE SÉCURITÉ EN CAS DE REPARATION
118004-001 REV. B

IMPORTANTI PRECAUZIONI DI SICUREZZA
SICUREZZA
QUESTO ALIMENTATORE GENERA TENSIONI CHE SONO PERICOLOSE E
POTREBBERO ESSERE MORTALI.
PONI ESTREMA CAUTELA QUANDO OPERI CON QUESO APPARECCHIO.
Gli alimentatori ad alta tensione devono sempre essere collegati ad un impianto di terra.
Non toccare le connessioni a meno che l’apparecchio sia stato spento e la capacità interna
del carico e dell’alimentatore stesso siano scariche.
Attendere cinque minuti per permettere la scarica della capacità interna dell’alimentatore
ad alta tensione.
Non mettere a terra il proprio corpo oppure operare in ambienti bagnati o saturi d’umidità.
SICUREZZA NELLA MANUTENZIONE.
Manutenzione potrebbe essere richiesta, rimuovendo la copertura con apparecchio
acceso.
La manutenzione deve essere svolta da personale qualificato, coscio dei rischi elettrici.
Attenzione alle AVVERTENZE contenute nel manuale, che richiamano all’attenzione ai
rischi quando si opera con tali unità e che potrebbero causare possibili ferite o morte.
Le note di CAUTELA contenute nel manuale, indicano le procedure da seguire per evitare
possibili danni all’apparecchio.
118004-001 REV. B

CZE MANUAL i 118030-001 REV F
SICHERHEIT
DIESES HOCHSPANNUNGSNETZTEIL ERZEUGT LABENSGEFÄHRLICHE
HOCHSPANNUNG.
SEIEN SIE SEHR VORSICHTIG BEI DER ARBEIT MIT DIESEM GERÄT
Das Hochspannungsnetzteil muB inner geerdet sein.
Berühren Sei die Stecker des Netzteiles nur wenn das Gerät ausgeschaltet ist und die
elektrischen Kapazitäten des Netzteiles und der angeschlossenen Last entladen sind.
Die internen Kapazitäten des Hochspannungsnetzteiles benötigen ca. 5 Minuten
um sich zu entladen.
Erden Sie sich nicht, und arbeiten Sie nicht in geuchter und Nasser Umgebung.
SERVICE SICHERHEIT
Notwendige Reparaturen können es erforderlich machen den Gehäusedeckel wahrend des
Betriebes zu enfernen.
Reparaturen düfren nur von qualifizierten, eingewiesenem Personal ausgeführt werden.
“Warnung” im folgenden Text weist auf gefährliche Operationen hin, die zuVerletzung oder
Tot führen können.
“ACHTUNG” im folgenden Text weist auf Prozeduren hin, die genauestens befolgt werden
müssen, um eventuelle Beschädigungen des Gerätes zu vermeiden.

CZE MANUAL ii 118030-001 REV F
Table of Contents
PAGE
1. INTRODUCTION
1.1 Description of the CZE Series .............................................................................1
1.2 CZE Specifications ..............................................................................................1
1.3 Standard Features.................................................................................................2
1.4 Options.................................................................................................................2
1.5 Interpreting the Model Number...........................................................................3
2. INSPECTION & INSTALLATION
2.1 Initial Inspection ..................................................................................................4
2.2 Mechanical Installation........................................................................................4
3. OPERATING INSTRUCTIONS
3.1 Operation..............................................................................................................7
3.2 Standard Features.................................................................................................7
4. PRINCIPLES OF OPERATION
4.1 Chassis .................................................................................................................15
4.2 High Frequency Inverter......................................................................................15
4.3 High Voltage Circuits..........................................................................................16
4.4 Control Circuits....................................................................................................16
4.5 Polarity Reversal..................................................................................................16
4.4 Options.................................................................................................................16
5. OPTIONS
5.1 Floating Ground...................................................................................................17
5.2 Input Voltage .......................................................................................................17
5.3 No Slow Start.......................................................................................................17
5.4 Non-Standard Slow Start .....................................................................................17
5.5 Extra Length Output Cable..................................................................................17
5.6 Auxiliary Outputs.................................................................................................17
5.7 Custom Designed Models ...................................................................................17
6. MAINTENANCE
6.1 Periodic Servicing................................................................................................19
6.2 Performance Test .................................................................................................19
6.3 High Voltage Dividers.........................................................................................19
7. REPLACEMENT PARTS

CZE MANUAL iii 118030-001 REV F
7.1 Replacement Parts................................................................................................20
7.2 Correspondence and Ordering Spare Parts..........................................................20
8. FACTORY SERVICE
8.1 Warranty Repairs.................................................................................................21
8.2 Factory Service Procedures..................................................................................21
8.3 Ordering Options and Modifications...................................................................21
8.4 Shipping Instructions...........................................................................................21
APPENDIX
A. Specification Controls (Custom Models Only)
B. Schematics
LIST OF FIGURES
2.1 CZE1000 Dimensions & Connector Interface.....................................................5
2.2 CZE2000 Dimensions & Connector Interface.....................................................6
3.1 Typical Operating Set Up CZE1000....................................................................10
3.2 Typical Operating Set Up CZE2000....................................................................10
3.3A Remote Programming Via Voltage Source..........................................................11
3.3B Remote Programming Via External Resistance...................................................11
3.4 Remote Monitor...................................................................................................12
3.5 HV ON/OFF Control ...........................................................................................12
3.6 Polarity Control....................................................................................................13
3.7 Polarity Indicator .................................................................................................13
3.8 Mode Indicator.....................................................................................................14
3.9 GFI & Load Return..............................................................................................14
3.7A Floating Ground Interface Circuit........................................................................18
LIST OF TABLES
1.1 Options.................................................................................................................2
2.1 Output Voltage and Current ................................................................................6

CZE MANUAL 1 118030-001 REV F
Chapter 1
INTRODUCTION
1.1 Description of The CZE Series
he CZE series of high voltage power supplies
provides very well regulated, low ripple high voltage
in a highly efficient, compact design. The
dramatically reduced size of these modules, compared to
traditional high voltage modules, is obtained by a state-of-
the-art off-line resonant converter. The resonant converter
utilizes a unique control scheme, which allows constant
frequency operation while maintaining high efficiency.
High operating frequency allows for very low ripple and
excellent dynamic response capabilities.
The DC output voltage and current are controllable over
the full range of operation. Monitoring and control
signals are provided for simple, yet flexible control of the
power supply. The CZE series operates from 24VDC
±10%. (User should specify the input voltage at the time
of ordering). The CZE series operates at 9W continuous.
The series does not require forced air cooling. The
ambient temperature must be kept below the maximum
rating as specified in 1.2. Consult Spellman Sales
Department for higher power capabilities of the CZE
series.
The standard warranty applies to the CZE series modules.
Consult factory about the warranty for custom modules.
1.2 CZE Specifications
•Output Control: Voltage and current are externally
programmable over the entire range from zero to
maximum rating via 0-10VDC reference or
potentiometer. (Other scale factors for control and
monitoring can be provided i.e. 1 volt per 10KV, 1
volt per 1mA etc.).
•Input
Voltage: 24Vdc ±10%. Consult the factory for
other input voltages.
•Voltage Regulation:
Load Regulation: 0.01% of full voltage for a no
load to full load change.
Line Regulation: ±0.01% of full voltage over the
specified input voltage range.
•Current Regulation:
Load Regulation: 0.05% ±25uA from 0 voltage to
full voltage.
Line Regulation: ±0.01% of full current over the
specified input voltage range.
•Ripple:
0.1% p-p of output voltage.
•Polarity:
Reversible via TTL Signal in Polarity Control Signal
Pin.
•Stability:
0.01% per hour after 1/2 hour warm up.
•Temperature Coefficient:
100 ppm per °C.
•Temperature:
Operating: 0°C to +50°C
Storage: -40°C to +80°
•Monitoring:
0 to 10VDC corresponding to 0 to 100% of output
voltage
0 to 10VDC corresponding to 0 to 100% of output
current.
0 to 10VDC corresponding to 0 to 100% of load
return current input.
Ground Fault Indication (GFI): +15V = Fault;
Output Impedance: = 4.7kOhma.
(Other scale factors available).
•Control:
Control signal for high voltage enable/disable.
IMPORTANT
This control signal in not a safety
interlock and should not be used for
protection from high voltage generation
for safety purposes.
T

CZE MANUAL 2 118030-001 REV F
1.3 Standard Features
The CZE series incorporates several standard features
designed to optimize user operation.
Slow Start: Provides a gradual increase in high voltage
output until the maximum set point is reached. Various
slow start times can be accommodated. Consult the
Spellman’s Sales Department for information on slow
start options. (The slow start time will be a function of
set point, input voltage and load conditions).
Polarity Control: A TTL compatible input controls the
polarity of the high voltage output. A logic level HIGH
will give a Positive, a LOW a Negative. If left open, the
unit will default to Positive.
G.F.I.: The Ground Fault Interrupt will give an
indication if there is more than approximately a 10%
difference between the return current test point and the
delivered current test point.
Polarity Indicator: Two outputs indicate whether
positive or negative polarity has been selected.
Mode Indicators: The two mode outputs indicate which
control loop is in control, the voltage or the current
regulation circuits.
1.3.1 Remote Operating Features
Remote Programming: Allows remote adjustment of
the output voltage and current via an external voltage
source.
Remote Monitor: Allows remote monitoring of the
output voltage and current.
High Voltage Enable/Disable: Allows remote ON/OFF
control of the high voltage.
+10VDC Reference: A +10VDC reference is provided
for remote programming via a potentiometer or resistive
divider.
1.4 Options
The options available are listed in Table 1.1. See section
5 for more information on the options along with
operating and set-up instructions. With few exceptions,
these options can be retrofitted to your power supply at
the factory in a short time. For price and retrofit
arrangements, contact the Spellman Sales Department.
CODE DISCRIPTION
•FG Floating Ground
• Alternate Test Point Scaling
• Test Point Polarity Reversal
•NSS No Slow Start
•SS(X) Non-Standard Slow Start
•LL(X) Extra Length Output Cable
• Non-Standard Output Connector
Table 1.1 Options

CZE MANUAL 3 118030-001 REV F
1.5 Interpreting the Model
Number:
The model number of the power supply
describes its capabilities. After the series name
is:
(1) The maximum voltage in kilovolts.
(2) P/N indicated reversibility.
(3) The Series of CZE 1000 or 2000
(4) The option code for all options that are
included.
(5) Custom “X” number representing details
listed in a separate specification control
drawing.
CZE 30 P/N 1000/2000 / FG / X#
Series
Name
Voltage
Maximum
Polarity
Option "X" Number
Custom
CZE
Series of
Reversible
Maximum Ratings
kV mA
Model
Number
5
2
CZE5PN1000/2000
10
1
CZE10PN1000/2000
15
0.67
CZE15PN1000/2000
20
0.50
CZE20PN1000/2000
30
0.3
CZE30PN1000/2000

CZE MANUAL 4 118030-001 REV F
Chapter 2
Inspection and Installation
nitial inspection and preliminary check-out
procedures are recommended. For safe
operation, please follow the step-by-step
procedures described in Chapter 3, Operating
Instructions.
2.1 Initial Inspection
Inspect the package exterior for evidence of
damage due to handling in transit. Notify the
carrier and Spellman immediately if damage is
evident. Do not destroy or remove any of the
packing material used in a damaged shipment.
After unpacking, inspect the panel and chassis
for visible damage.
Fill out and mail the Warranty Registration card
accompanying the unit. Standard CZE high
voltage power supplies and components are
covered by warranty. Custom and special order
models (with an X suffix in the model number)
are also covered by warranty.
2.2 Mechanical Installation
The CZE series module power supplies are
designed for installation into existing or newly
developed OEM equipment. The power supply
can also easily fit into bench top applications or
test set requirements. Standard unit dimensions
are shown in Figure 2.1
For custom mounting requirements or specific
package size requirements consult Spellman’s
Sales Department. Spellman has many package
designs available, or can design a specific
enclosure for your requirements.
The CZE series utilizes solid encapsulations for
corona free operation. No periodic maintenance
is required. Due to conservative voltage spacing
design, periodic maintenance is not required
I

CZE MANUAL 5 118030-001 REV F
PIN
FUNCTION
1
Chassis Ground & 24Vdc Return
2
+24Vdc Input
3
High Voltage Enable/Inhibit
4
Voltage Test Point: 10V±2% = 0 to Rated
Output
5
Current Test Point: 10V±2% = 0 to Rated
Output
6
Remote Voltage Control (0 to 10V)
7
Remote Current Control (0 to 10V)
8
+10.24Vdc Reference
9
Test Point & Remote Programming Return
10
Polarity Control Signal
11
Positive Polarity Indicator
12
Negative Polarity Indicator
13
Current Mode Indicator
14
Voltage Mode Indicator
15
Return Current Test Point
16
Load Return
17
Ground Fault Indication
18
Spare (Shield Ground Option)
Note: If Enable/Inhibit is not used, connect Pin 3 to Pin 8.
Remote Programming:
Permits remote adjustment of the output voltage
and current via an external voltage source. By
adjusting the voltage source from 0V to 10V the
desired output may be selected.
Remote Monitor:
Test points, pins 4 and 5 of the input connector,
monitor voltage and current outputs. The output
polarity is positive from 0V to 10V equal to 0 to
100% of the output ±0.5%. Output impedance is
10k Ohms.
High Voltage Enable/Inhibit:
The external TTL signal allows the user to
inhibit the power supply output without
switching the HIGH VOLTAGE OFF.

CZE MANUAL 6 118030-001 REV F
Figure 2.1 CZE1000 Dimensions & Connector Interface

CZE MANUAL 7 118030-001 REV F
PIN
FUNCTION
1,2,3
Chassis Ground & 24Vdc Return
4
High Voltage Enable/Inhibit
5
Voltage Test Point: 10V±2% = 0 to Rated
Output
6
Output Current Test Point: 10V±2% = 0 to
Rated Output
7
Chassis Ground
8
Remote Voltage Control
9
Remote Current Control
10
+10.24Vdc Reference
11
Test Point and Remote Programming Return
12
Polarity Control Signal
13
Positive Polarity Indicator
14, 15
+24Vdc Input
16
Chassis Ground
17
Negative Polarity Indicator
18
I –Mode Indicator
19
V- Mode Indicator
20
Current Return Test Point
21
Load Return
22
Ground Fault Indication
23,24,25
Spares
Note: If Enable/Inhibit is not used, connect Pin 4 to Pin
10.
Remote Programming:
Permits remote adjustment of the output voltage and
current via an external voltage source. By adjusting the
voltage source from 0V to 10V the desired output may be
selected.
Remote Monitor:
Test points, pins 5 and 6 of the input connector, monitor
voltage and current outputs. The output polarity is
positive from 0V to 10V equal to 0 to 100% of the output
±0.5%. Output impedance is 10k Ohms.
High Voltage Enable/Inhibit:
The external TTL signal allows the user to inhibit the
power supply output without switching the HIGH
VOLTAGE OFF.

CZE MANUAL 5 118030-001 REV F
Figure 2.2 CZE2000 Dimensions & Connector Interface

CZE MANUAL 6 118030-001 REV F
Chapter 3
Operating Instructions
3.1 Operation
WARNING
THIS EQUIPMENT GENERATES
DANGEROUS VOLTAGES THAT MAY BE
FATAL. PROPER GROUNDING OF ALL HIGH
VOLTAGE EQUIPMENT IS ESSENTIAL.
WARNUNG
DIESES GERÄT ERZEUGT
LEBENSGEFÄHRLICHE HOCHSPANNUNG.
ALLE HOCHSPANNUNGSGERÄTE MÜSSEN
ÜBER EINE GEEIGNETE ERDUNG
VERFÜGEN.
IMPORTANT
Before connecting the power supply to the
AC line, follow this step-by-step procedure.
Do not connect the power supply to the AC
line until Step G is reached.
Failure to follow these procedures may void
the warranty.
ACHTUNG
BEVOR SIE DAS
HOCHSPANNUNGSNETZEIL AN DIE
STROMVERSORGUNG ANSCHLIESSEN,
MÜSSEN FOLGENDE PUNKTE GEPRÜFT
WERDEN.
SCHLIESSEN SIE DAS
HOCHSPANNUNGSNETZEIL NICHT AN DIE
SPANNUNGSVERSORGUNG BEVOR PUNKT
G ERREICHT IST. EVENTUELLE
AUFTRETENDE BESCHÄDIGUNG DES
GERÄTES DURCH NICHT BEFOLGEN
DIESER ANWEISEN KANN ZUM VERLUST
DES GARANTIEANSPRUCHES FÜHREN.
A) Insure that the high voltage cable is properly
terminated to the load. Insure that all circuits connected
to the high voltage output are safely interlocked against
accidental contact. Insure external load is discharged.
B) Check the input voltage rating on the serial
nameplate of the supply and make certain that this is the
rating of the available power source. CZE series modules
operate on 28Vdc unless ordered with a different input
voltage option. External fusing is recommended for the
DC input power. For the CZE series a 2 AMPHERE
SLO-BLO type fuse must be used.
C) PROPER GROUNDING TECHNIQUE: The
chassis of high voltage power supplies must be grounded,
preferably to a water system ground using copper pipe or
other earth ground. See Figure 3.1 and 3.2 for a typical
operating setup. The return line from the load should be
connected to the power supply chassis or to Load Return
pin.
D) Options Note: See section 5 for hook up and
operating instructions for the options on your unit.
Custom models may also require set up changes.
E) Hook-up: Connect Input control and monitoring
connections as described in this manual.
F) For initial turn-on, program the voltage and
current for zero output. Connect the enable/disable signal
to disable by grounding the Enable line. Set the desired
polarity.
G) The DC input power may now be connected.
H) Enable the power supply via the enable/disable
logic signal.
I) Slowly program the output voltage and current to
desired level. Monitor the output voltage and current via
the monitoring test points. Note equipment operation is
normal, i.e. Load is behaving as predicted.
J) To turn high voltage off, use the enable/disable
signal. If equipment is to be kept off for extended
periods, disconnect power supply from the DC INPUT
source.

CZE MANUAL 7 118030-001 REV F
WARNING
AFTER TURNOFF, DO NOT HANDLE
THE LOAD UNTIL THE CAPACITANCE
HAS BEEN DISCHARGED!
LOAD CAPACITANCE MAY BE DISCHARGED BY
SHORTING TO GROUND.
WARNUNG
Nach drm Ausschalten des Gerätes die Last erst
berühren wenn diese vollständig entladen ist.
Die elektrische Kapazität der Last kann durch
einen Kurzschluß zur Erde entladen werden.
WARNING
THE VOLTAGE MONITOR ON THE POWER
SUPPLY FRONT PANEL DOES NOT READ THE
OUTPUT VOLTAGE WHEN THE POWER IS
TURNED OFF, EVEN IF A CHARGE STILL EXISTS
ON THE LOAD.
WARNUNG
Der Spannungsmonitor arbeitet nicht bei
abgeschalteter Versorgungspannung, auch nicht
wenn die Last noch aufgeladen ist.
CAUTION
ALWAYS OPERATE THE UNIT WITH THE COVER
ON. DO NOT ATTEMPT TO ACCESS OR REPAIR
ANY INTERNAL CIRCUITS. DANGEROUS AND
LETHAL VOLTAGES ARE GENERATED INSIDE
THE MODULE.
CAUTION
Betreiben Sie das Hochspannungsnetzteil
ausschließlich mit geschlossenem Gehäuse.
Versuchen Sie nicht die internen Schaltkreise zu
berühren oder zu reparieren, da
lebensgefährliche Hochspannungen in Innern
erzeugt werden.
3.2 Standard Features
A note on remote interface circuitry and remote signal
grounding: whenever possible, electrical isolation should
be provided when interfacing with any high voltage
power supply. For enable/disable signal connections, an
isolated relay or optocoupler should be used. If possible,
analog programming and monitoring signals should be
isolated via analog isolation amplifiers. Spellman
application engineers are available to assist in interface
circuitry design. All interface cables should be properly
shielded. All power supply signals should be referenced
to the power supplies signal ground or power supply
chassis ground
REMOTE PROGRAMMING: Allows remote
adjustment of the output voltage and current via an
external voltage source. A 0 to 10VDC signal is supplied
to Pin 6/8 of the control input connector for voltage
programming. A 0 to 10 VDC signal is supplied to Pin
7/9 of the control input connector for current
programming. Programming signals should be referenced
to Pin 9/11 of the control input connector signal ground.
By adjusting the voltage source from 0 volts (zero output)
to 10 volts (full rated output) the desired output can be
selected. See Figure 3.3A for wiring diagram and
specifications.
An alternate method of controlling the output remotely is
by using external resistance such as a potentiometer or a
resistor network. See Figure 3.3B for wiring diagram.
Remote Monitoring: Test points are made available for
monitoring the voltage and current output. The test points
are always positive regardless of the output polarity,
where zero (0) to 10 (10) volts equals 0-100% of the
output. See Figure 3.4 for test point wiring.
.

CZE MANUAL 8 118030-001 REV F
WARNING
It is extremely dangerous to use this
circuit to inhibit high voltage generation
for the purpose of servicing or
approaching any area of load
considered unsafe during normal use.
WARNUNG
Es ist sehr gefährlich diese Schaltung
zum abschalten der Spannung fur
Reparatur oder Service Zwecke zu
benutzen.
Reverse Polarity Control Signal: This input signal is
intended to be driven from TTL logic and will cause the
output to switch polarity. The unit will automatically
sequence all internal functions to switch output polarity
with minimal stress. Greater than 3.4V (or open) on pin
10 yields Positive High Voltage. Less than 1V on pin 10
yields Negative High Voltage.
Operation is as follows: upon reverse command, the
inverter in instantaneously disabled and the output begins
to decay from its set point to zero. At no load, this time
constant is 0.1 seconds. At approximately 10% output,
the logic circuitry will switch the primary and secondary
relays and enable the inverter. The output then slows up
to its set value time constant. Obviously, the time to
complete the switch operation is a function of output
voltage setting and load current. The maximum switch
time for set points above 3kV occurs at no load and 30kV.
Under this condition, that time is a constant 100
milliseconds, regardless of output voltage or current
setting.
Polarity Indicator: +24V on pin 11/13 indicates positive
polarity selected, +24V on pin 12/17 indicates negative
polarity selected. Output impedance is 100 ohms. This is
intended to drive an incandescent lamp. Internally, a
relay contact switches the 100ohm resistor to the +24V.
Therefore, the indicator bulb should be connected
between the output and ground. Please note that the
power supply input current will increase by the amount of
current drawn by the incandescent bulb (maximum
current is 50mA). If it is desired to drive an LED instead
of an incandescent bulb, simply add a 3.3k 1/4W resistor
in series with the output and the LED.
Voltage and Current Mode Signals: +15V is provided
through a 3.3K resistor to drive an LED. +15V on pin 19
indicates that the voltage regulator mode is selected.
+15V on pin 18 indicated that the current regulation mode
is selected. The internal control circuitry employs
automatic crossover between voltage and current modes.
In the voltage mode, the current level is set and the
voltage programming is used to control the output. If the
load current in increased to the point where it exceeds the
preset level, the unit will cross over automatically into
current mode. In current mode operation, the voltage
programming is preset and current control controls the
output. If the load current is reduced to the point that the
voltage exceeds the preset level, then the output will
automatically cross over to voltage mode. When the unit
crosses over from either current to voltage mode or
voltage to current mode, the mode signal will switch with
it.
Control Current Test Point: +10V on pin 8/10 = Full
Scale Current ±2%. The return current circuitry allows a
separate path to measure actual load current. The load is
returned to the load return, pin 16/21 of the connector and
a buffer test point is provided on pin 15/20. The standard
current test point provided on pin 5/6 measures the
current delivered to the load while the return current test
point measures the current returned to the power supply
by the load. By comparing these two signals, any
differences between them must be going into leakage.
Therefore, if this leakage exceeds some level, the unit
could be shut down.
Ground Fault Indication: +15 V on pin 17/22 = Fault.
Output impedance = 4.7K. This feature compares the
return load current to the delivered load current and
provides a fault signal if the difference between these
signals (leakage current) exceeds 20uA. This fault signal
can be used to shut down the whole system or through
appropriate circuitry to shut down the power supply either
by using the remote enable or by removing the +24V
input power. The output circuit for this fault indication is
an open collector with a 4.7K pull up resistor

CZE MANUAL 9 118030-001 REV F
Figure 3.1 CZE1000 Typical Operating Set Up
Figure 3.2 CZE2000 Typical Operating Set up