Spellman EPM Series, SMS Series Instruction Manual

R

EPM/SMS 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

EPM/SMS MANUAL 118027-001 Rev G

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.

S

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

EPM/SMS MANUAL i 118026-001 REV K

Table of Contents

PAGE

1. INTRODUCTION

1.1 Description of the EPM/SMS Series....................................................................1

1.2 EPM/SMS Specifications ....................................................................................1

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

1.4 Options .................................................................................................................2

1.5 Interpreting the Model Number ...........................................................................2

2. INSPECTION & INSTALLATION

2.1 Initial Inspection ..................................................................................................3

2.2 Mechanical Installation ........................................................................................3

2.3 Installation Instructions ........................................................................................6

3. OPERATING INSTRUCTIONS

3.1 Operation ..............................................................................................................7

3.2 Standard Features .................................................................................................8

4. PRINCIPLES OF OPERATION

4.1 High Frequency Inverter ......................................................................................15

4.2 High Voltage Circuits ..........................................................................................15

4.3 Control Circuits ....................................................................................................15

4.4 Options .................................................................................................................15

5. OPTIONS

5.1 Floating Ground ...................................................................................................16

5.2 24Vdc ...................................................................................................................16

5.3 No Slow Start .......................................................................................................16

5.4 Non-Standard Slow Start .....................................................................................16

5.5 Extra Length Output Cable ..................................................................................16

5.6 Custom Designed Models ...................................................................................16

6. MAINTENANCE

6.1 Periodic Servicing ................................................................................................18

6.2 Performance Test .................................................................................................18

6.3 High Voltage Dividers .........................................................................................18

EPM/SMS MANUAL ii 118026-001 REV K

7. REPLACEMENT PARTS

7.1 Replacement Parts ................................................................................................19

7.2 Correspondence and Ordering Spare Parts ..........................................................19

8. FACTORY SERVICE

8.1 Warranty Repairs .................................................................................................20

8.2 Factory Service Procedures ..................................................................................20

8.3 Ordering Options and Modifications ...................................................................20

8.4 Shipping Instructions ...........................................................................................20

APPENDIX

A. Specification Controls (Custom Models Only)

LIST OF FIGURES

2.1 EPM Module Dimensions ....................................................................................4

2.2 SMS Module Dimensions ....................................................................................5

3.1 SMS Typical Operating Set Up ...........................................................................9

3.2 EPM Typical Operating Set Up ...........................................................................9

3.2A SMS Remote Programming via Voltage Source ..................................................10

3.2B SMS Remote Programming via External Resistance ...........................................10

3.3 SMS Remote Monitoring .....................................................................................11

3.4A SMS HV ON/OFF Enable (Low) Control ...........................................................11

3.4B SMS HV ON/OFF Enable (Hi) Control ...............................................................12

3.5A EPM Remote Programming via Voltage Source .................................................12

3.5B EPM Remote Programming via External Resistance ..........................................13

3.6 EPM Remote Monitoring .....................................................................................13

3.7A EPM HV ON/OFF Enable (Low) Control ...........................................................14

3.4B SMS HV ON/OFF Enable (Hi) Control ...............................................................14

5.1 Floating Ground Interface Circuit ........................................................................17

LIST OF TABLES

1.1 Options .................................................................................................................2

2.1 Output Voltage and Current ................................................................................6

EPM/SMS MANUAL 1 118026-001 REV K

Chapter 1

INTRODUCTION

1.1 Description Of The EPM/SMS
Series

he EPM/SMS 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 EPM/SMS series operates from
24VAC ±10% or 28Vdc ±10%. (The user should specify
the input voltage at the time of order). The EPM series
operates at 30W continuous and the SMS series operates
at 60W continuous. Neither series requires 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
EPM/SMS series.

The standard warranty applies to the EPM/SMS series
modules. Consult factory about the warranty for custom
modules.

1.2 EPM/SMS 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 10mA etc.).

• Input

Voltage: 28Vdc ±10%, 28Vdc ±10% optional.

(Consult the factory for other input
voltages.)

Current: 5A max. on SMS models, 3A max. on

EPM models.

• 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:

Positive or Negative polarity with respect to ground.
(Specify at time of ordering).

• Stability:

0.01% per hour after 1/2 hour warm up.

• Temperature Coefficient:

100 ppm per C.

• Temperature:

Operating: -20C to -40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. (Other scale factors available).

• Control:

Control signal for high voltage enable/disable.

• Environmental:

Indoor use
Altitude up to 2000 meters
80% max. rel. humidity for temperatures up to 31ºC,
decreasing linearly to 50% rel. humidity at 40ºC.
Pollution degree 2 (IEC664)

T

EPM/SMS MANUAL 2 118026-001 REV K

IMPORTANT

This control signal in not a safety

interlock and should not be used for

protection from high voltage generation

for safety purposes.

1.3 Standard Features

The EPM/SMS 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).

Overvoltage Protection: SMS series only. An
overvoltage protection circuit monitors the output for
excessive voltage generation. Overvoltage conditions can
be caused by an excessive input program signal or an
internal defect in the control circuits. If an overvoltage
condition is detected, the power supply is latched off until
input power is reset.

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

• 24 24Vdc Input

• NSS No Slow Start

• LL(X) Extra Length Output Cable

• Output Connector

Table 1.1 Options

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 polarity of the output – positive (P), negative

(N).

(3) The maximum output (in watts).
(4) The option code for all options that are included.
(5) Custom “X” number representing details listed in

a separate specification control drawing.

EPM/SMS 30 P 60 / FG / X(#)

Series
Name

Voltage

Maximum

Polarity

Option

"X" Number

Custom

Power

Maximum

EPM/SMS MANUAL 3 118026-001 REV K

Chapter 2

Inspection and Installation

nitial inspection and preliminary checkout
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 EPM/SMS 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 EPM/SMS 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 EPM/SMS series utilizes solid
encapsulations for corona free operation. No
periodic maintenance is required. Lower voltage
units (under 6KV) utilize air insulation. Due to
conservative voltage spacing design, periodic
maintenance is not required

I