Spellman XLG SERIES, XLF SERIES Instruction Manual

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XLG/XLF SERIES

MODEL :
SERIAL# :
DATE :

SPELLMAN
HIGH VOLTAGE ELECTRONICS
CORPORATION

475 Wireless Blvd.
Hauppauge, New York, 11788

[phone]*FAX: [phone]*
E-mail: [e-mail]
Website: www.spellmanhv.com

High Voltage Power Supply

XLG/XLF MANUAL 118021-001 Rev C

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.

SERVICESICHERHEIT

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.

118004-001 REV. B

PRECAUTIONS IMPORTANTES POUR VOTRE SECURITE

CONSIGNES DE SÉCURITÉ

CETTE ALIMENTATION GÉNÈRE DES TENSIONS QUI SONT DANGEUREUSES ET PEUVENT ÊTRE FATALES.

OYEZ EXTRÊMENT VIGILANTS LORSQUE VOUS UTILISEZ CET ÉQUIPEMENT.

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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.

CONSIGNES DE SÉCURITÉ EN CAS DE REPARATION

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.

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

Table of Contents

PAGE

1. INTRODUCTION

1.1 Description of the XLG/XLF Series....................................................................1

1.2 XLG/XLF Specifications.....................................................................................1

1.3 Standard Features.................................................................................................2

1.3.1 Remote Operating Features ....................................................................2

1.3.2 System Status and Fault Diagnostic Display..........................................2

1.4 Options.................................................................................................................3

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 .............................................................................................................6

3.2 Standard Features.................................................................................................6

4. PRINCIPLES OF OPERATION

4.1 Chassis .................................................................................................................16

4.2 Line Rectifier and Filtering..................................................................................16

4.3 Inverter.................................................................................................................17

4.4 High Voltage Transformer...................................................................................17

4.5 High Voltage Assembly.......................................................................................17

4.6 Control/Power PWB ............................................................................................17

4.7 Front Panel Assembly..........................................................................................18

4.8 Filament Supply PWB .........................................................................................18

4.9 Options.................................................................................................................18

5. OPTIONS

5.1 Adjusting Overload Trip......................................................................................19

5.2 220C AC Single Phase Input ...............................................................................19

5.3 No Slow Start.......................................................................................................19

5.4 Non-Standard Slow Start .....................................................................................19

5.5 Extra Length Output Cable..................................................................................19

5.6 Adjustable Power Trip.........................................................................................19

5.7 Arc Trip Option ...................................................................................................19

5.8 Instant ON Option................................................................................................19

5.9 Custom Designed Models....................................................................................19

XLG/XLF MANUAL i 118020-001 REV E

6. MAINTENANCE

6.1 Periodic Servicing................................................................................................21

6.2 Performance Test.................................................................................................21

6.3 High Voltage Dividers.........................................................................................21

7. REPLACEMENT PARTS

7.1 Replacement Parts................................................................................................22

7.2 Correspondence and Ordering Spare Parts..........................................................22

8. FACTORY SERVICE

8.1 Warranty Repairs.................................................................................................23

8.2 Factory Service Procedures .................................................................................23

8.3 Ordering Options and Modifications...................................................................23

8.4 Shipping Instructions...........................................................................................23

APPENDIX

A. Specification Controls (Custom Models Only)

LIST OF FIGURES

Figure 2.1 Dimensions XLG and XLF............................................................................5

Figure 3.1 Typical Operating Setup XLG.......................................................................8

Figure 3.2 Typical Operating Setup XLF........................................................................9

Figure 3.3A Remote Programming via Voltage Source ....................................................11

Figure 3.3B Remote Programming via External Resistance..............................................11

Figure 3.4 Remote Monitor Test Point Designations......................................................12

Figure 3.5 Remote Control of HV ON and HV OFF......................................................12

Figure 3.6 External Inhibit Interface Circuit...................................................................13

Figure 3.7 External Interlock Interface Circuit...............................................................13

Figure 3.8 Remote HV ON and Remote HV OFF Indicator Circuit...............................14

Figure 3.9 Remote Mode Indicators Interface ................................................................15

Figure 5.1 Instant ON Option..........................................................................................20

Figure 5.2 Adjustable Power Remote Interface ..............................................................20

Table 1.1 Options...........................................................................................................3

Table 3.1 Rear Panel Interface.......................................................................................10

Table 4.1 List of Main Assemblies................................................................................17

XLG/XLF MANUAL ii 118020-001 REV E

LIST OF TABLES

Chapter 1

INTRODUCTION

1.1 Description of the XLG/XLF
Series

he XLG/XLF series of high voltage power supplies
represent an advanced approach to X-ray generator

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power requirements. These power supplies provide
all of the power, control, and support functions required
for practically all X-ray applications. The XLG/XLF
series provide high voltage, high current outputs with
very low ripple. Extremely stable voltage and current
outputs result in significant performance improvements
over previously available technology. Low output ripple
provides higher intensity levels, with no increase in tube
loading.

All these advancements are possible only by Spellman’s
long history in X-ray power systems. These series of
power supplies utilize extremely advanced resonant
conversion techniques, along with sophisticated digital
technology.

The XLF series is specifically designed for X-ray tube
application where the high voltage is a negative polarity,
and the filament circuits are referenced to the cathode
high voltage potential, (floating filament). The XLG
series is specifically designed for X-ray tube applications
where the high voltage is a positive polarity, and the
filament circuits are referenced to cathode ground
potential, (grounded filament).

The X-ray tube voltage and tube emission current are all
continuously adjustable via front panel and/or remote
controls.

The power supplies operate from a variety of line
voltages and are convection cooled for 1 – 300W models
and fan cooled for 800 to 1200W models requiring no
water cooling. Custom designed units for single use or
OEM applications are available.

1.2 XLG/XLF Specifications

 Output Control: Voltage and current are

continuously adjustable over the entire range from

zero to maximum rating a ten-turn potentiometer

with a lockable counting dial.
 Input Voltage: 115Volts AC10%, 50/60Hz, single

phase or 220Volts AC 10%, 50/60Hz, single phase.

1200W models are available with 220 V AC input

only. Specify input voltage at time of order. Other
line voltages are available.

 Voltage Regulation:

Load Regulation: 0.005% of full voltage for a no

load to full load change.

Line Regulation: 0.005% of full voltage over the

specified input voltage range.

 Current Regulation:

Load Regulation: 0.05%  of full current ±100uA

for any voltage change.

Line Regulation: 0.01% of full current over the

specified input voltage range.

 Ripple: 0.03%rms below 1kHz,

0.75%rms above 1kHz.

 Filament XLG:

HPWR: 9A, 3V
LPWR: 3A, 3V

 Filament XLF: 5A, 15V.
 Stability: 0.01% per hour after 1/2 hour warm up.

0.02% per 8 hours (typical).

 Temperature Coefficient: 100 ppm per C. Higher

stability (50 ppm per ºC) available on special order.

 Ambient Temperature:

Operating: 0C to +40C
Storage: -40C to +85C

 Metering: Digital voltage and current meters are

accurate to 1%.

 Weight: 17 to 30 lbs. (7.7 to 14kg) depending on

model.

 Physical:

XLG:

30-60kV: 3 ½”H x 19”W x 19”D rack mount.
(89 x 483 x 483mm).
80-130V: 3 ½”H x 19”W x 19”D rack mount.
(89 x 483 x 483mm).

XLF:

3 ½”H x 19”W x 20”D rack mount.
(89 x 483 x 508mm).

XLG/XLF MANUAL 1 118020-001 REV E

1.3 Standard Features

The XLG/XLF series incorporates several standard
features designed to optimize user satisfaction and safety.

KV AND MA/FILAMENT CURRENT RAMP
CIRCUITS: This feature provides for a gradual rise for

kV, mA and filament current. This feature is designed to
limit voltage shock and filament shock to the X-ray tube.
The kV ramp rate is approximately 6 seconds. The
filament current is slowly increased until the desired mA
level is achieved. This time is typically 5 seconds for full
mA output. These ramp conditions are started at the
initial HV ON control signal.

ARC DETECT / ARC QUENCH / ARC COUNT:
These features allow the user to tailor the power supply to
meet specific needs in dynamic load applications. If an
arc occurs, the output is inhibited for approximately one
second, then the output is ramped up to the preset level
with the Slow-start circuitry. See Chapter 3 for operating
details and information for user customization for these
features.

REMOTE HIGH VOLTAGE CONTROL: Allows
remote control of the HIGH VOLTAGE ON and HIGH
VOLTAGE OFF functions. Signals are also provided for
remote indication of HV ON or HV OFF status.

EXTERNAL INHIBIT: A circuit that will inhibit the
high voltage output is provided of the 25 pin mini-D
connector on the rear of the chassis. A logic low, ground,
will inhibit the high voltage output and a logic high, open,
will restore the high voltage output to the preset level.
NOTE: The External Inhibit circuit should
NOT be used for protection against injury or for safety
interlock. See External Interlock for this type of safety
control

EXTERNAL INTERLOCK: Interlock connections are
provided on the terminal block on the rear of the chassis
for connection to a safety switch. The unit will not
operate unless the interlock circuit is closed. During high
voltage operation, opening the interlock circuit will cause
the High Voltage to shut off. This circuit should be used
for safety interlock circuits.

INTERNAL FAULT PROTECTION: The XLG/XLF
series continually monitors internal circuits critical to the
proper operation of the power supply. In the event that
one of these circuits does not function correctly, the fault
detection circuit latches the appropriate fault on the front
panel display and turns off the outputs and reverts the unit
to the POWER DOWN mode.

INDICATOR LAMPS: HIGH VOLTAGE OFF and
HIGH VOLTAGE ON indicators.

OUTPUT CABLE: XLG models are provided with a
ten foot shielded high voltage output cable. The cables
are designed with a plug arrangement so that they can be
easily removed from the mating receptacle located on the
rear of the chassis. internal EMI filter and fuse provide
protection against line voltage surges and power supply
faults.

1.3.1 Remote Operating Features

REMOTE PROGRAMMING: Allows remote
adjustment of the output voltage and current via an
external voltage source. The output power is also
remotely controllable when the CPC or APT option is
ordered.

REMOTE MONITOR: Allows remote monitoring of
the tube voltage and tube emission current. NOTE:
Output power remote monitor is included with the CPC
and APT options.

1.3.2 System Status and Fault
Diagnostic Display

“Dead Front” type indicators are provided to give the user
complete indication of system operation and fault
conditions. If a fault occurs the power supply will revert
to the POWER DOWN mode. This is indicated by both
the HV ON and HV OFF lamps turning off. To reset,
depress the HV OFF switch.

VOLTAGE (CONTROL): Indicates the output voltage
regulator circuit is maintaining voltage regulation.

CURRENT (CONTROL): Indicates the output current
regulator circuit is maintaining current regulation.

POWER (CONTROL): Indicates the output power
regulator circuit is limiting tube power (optional).

HV INHIBIT: Indicates the high voltage supply is being
inhibited by either the EXTERNAL INHIBIT or internal
protection circuitry.

INTLK CLSD: Indicates the EXTERNAL
INTERLOCK connections are in the closed position.
This also indicates closure of internal power supply
interlocks.

INTLK OPEN: Indicates the EXTERNAL
INTERLOCK connections are in the open position. This
also indicates opening of internal power supply
interlocks.

XLG/XLF MANUAL 2 118020-001 REV E

OVERVOLT: Indicates the overvoltage protection
circuitry has caused the power supply to turn off.
Overvoltage protection is internally set to 110% of rated
output voltage.

OVERCURR: Indicates the output current has exceeded
the programmed current trip level when the AOL
(Adjustable Overload Trip) or the OL (overload Trip)
options are installed.

The options available are listed kin Table 1.1. See
Section 5 for more information on these options along
with operating and set-up instructions. With few
exceptions, these options and modifications can be
retrofitted to your power supply at the factory in a short
time. For price and retrofit arrangements, contact
Spellman’s Sales Department.

OVERPWR: Indicates the output power has exceeded
the internally set level or the remote programmed level if
the optional circuitry is installed.

ARC: Indicates that an arc has occurred within the
previous one second or that the ARC COUNT/TRIP has
shutdown the power supply.

RGLT ERR: Indicates a failure in the voltage, current or
power regulation circuitry. This fault usually occurs
when there is a lack of output power to maintain
regulation.

FILAMENT STANDBY/LIMIT (rear panel):

Indicates the filament is in a standby or limit mode. Also,
when illuminated, this indicates the emission current
regulator is not regulating.

1.4 Options

CODE DISCRIPTION

• AOL Adjustable Overload Trip (0-103%)

• APT Adjustable Power Trip

• AT Arc Trip

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 kV)
(2) the maximum output (in watts)
(3) the option codes for all options that are included.
Custom units have an X number after the option codes.

XL 30 P 1200/ AOL / X(#)

Series
Name

Maximum
Voltage

Polarity

Maximum
Power

Option

Custom

"X" Numb er

• SS(X) Non-Standard Slow Start

• NSS No Slow Start

• IO Instant ON

• ( ) Specify 220V or 100V or 200Vac Single

Phase input with order

• DPM4 4 ½ digit ±1 least significant digit panel mrt

• LL(X) Extra Length Output Cable

• SL Slides

• BFP Blank Front Panel

Table 1.1 XLG/XLF Options

XLG/XLF MANUAL 3 118020-001 REV E