Bertan 205B series Manuel utilisateur

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The High Voltage People

INSTALLATION

AND OPERATING

MANUAL

BERTAN SERIES 205B

Installation and Operating Manual –Series 205B Page 2

WARRANTY

The Del Power Conversion Group ("Del") warrantieseachofitsproductsto beofsound design and

free from defectsinmaterialand workmanship. Our obligationunderthiswarrantyisto repair or

replace (at ouroption)FOB ourfactory:

AnySTANDARD or CUSTOM product,orpartthereof,at nocharge, within1 year after shipment

date,whichproves defective undernormaluse.

To exercise this warranty, contact the Customer Service Department at the factory

(outside the U.S.A.,contactyour localDel sales representative) toobtaina

Returned Material Authorization(RMA)number and shipping instructions.Sendthe

product, shipping prepaid, to Del's factory.Repairswill bemade and the product

returned - we will cover return shipping charges. All repairs are shipped UPS Ground.

Upon request, we can utilize faster shipping methods at customer’s expense. Repaired

products are warranted for the balance of the original warranty period or at least 90 days.

Replaced productswillhavea new 1-year warrantybeginning the dayunitisshipped

back to customer.

LIMITATION OF WARRANTY

Del does notwarrantthat the productscan beused forany particular purposeother

than those covered by the applicable specifications. This warranty does not apply to

defectsresultingfromproduct modificationwithoutDel's expresswrittenconsent

ormisuse ofany product or part.Del assumesnoliability,inany event,for

consequential damages, for anticipated or lost profits, incidental damages or loss of time

or other losses incurred by purchaser or any third party in connection with products

covered by this warranty.

Installation and Operating Manual –Series 205B Page 3

TABLE OF CONTENTS

Paragraph Title Page

SECTION 1 - GENERAL INFORMATION 4

1.1 PURPOSE OF THE EQUIPMENT 4

1.2 DESCRIPTION 4

1.3 SPECIFICATIONS 4

1.4 OPTIONS 4

1.5 SAFETY TERMS 4

1.6 WARRANTY INFORMATION 5

SECTION 2 - OPERATION 6

2.1 INSTALLATION 6

2.2 FRONT PANEL CONTROLS AND DISPLAYS 6

2.3 REAR PANEL CONTROLS, CONNECTORS, AND TERMINALS 6

2.4 POLARITY REVERSING: 7

2.5 PREPARATION FOR USE 8

2.6 LOCAL OPERATION 8

2.7 REMOTE OPERATION 9

2.8 COMPUTER PROGRAMMING (Optional) 10

2.9 INPUT POWER 12

2.10 CURRENT LIMITING 12

2.11 HIGH VOLTAGE OUTPUT 12

SECTION 3 - THEORY OF OPERATION 13

3.1 FUNCTIONAL DESCRIPTION 13

3.2 CIRCUIT DESCRIPTION 13

SECTION 4 - MAINTENANCE 14

4.1 GENERAL 14

4.2 CLEANING 14

4.3 CALIBRATION SERVICES 14

SECTION 5 - SPECIFICATIONS 15

Installation and Operating Manual –Series 205B Page 4

SECTION 1 - GENERAL INFORMATION

1.1 PURPOSE OF THE EQUIPMENT

The Series 205B is a family of regulated precision laboratory high voltage power supplies. They

provide exceptional performance in critical applications such as nuclear and electro-optical

instrumentation, precision CRT and electron beam applications.

1.2 DESCRIPTION

The Series 205B is a family of 19”rack-mountable power supplies with output voltages up to 50

kV. The units consist of a DC power supply that converts the AC line power to a low DC voltage

and a DC to DC converter that generates the high DC output voltage. Low voltage electronic

solid-state circuitry is mounted on the PCB100, and the high voltage assembly is fully

encapsulated for reliable, arc-free, operation.

These stable, low noise high voltage power supplies feature front panel digital voltage and current

metering, and calibrated direct-reading front panel controls. The rear panel features a HV output

connector, a connector for remote analog programming and output voltage and output current

monitoring, the output polarity switch, line power plug, fuse, and AC voltage selection switch.

All units have arc and short circuit protection for safe, reliable, and arc-free operation. Although

primarily designed for rack mounting, the unit may also be used in benchtop applications.

1.3 SPECIFICATIONS

For the Series 205B detailed specifications, refer to the Specifications section.

1.4OPTIONS (OEM APPLICATIONS ONLY)

Isolated Floating Output

Units can be provided with the output capable of floating up to ±2kV from ground. All controls,

programming and monitoring functions operate normally, referenced to ground. The high voltage

output polarity, with respect to the floating input terminal is reversible.

1.5 SAFETY TERMS

The WARNING used in this manual explains dangers that could result in personal injury or

death. The CAUTION used in this manual explains hazards that could damage the instrument.

Installation and Operating Manual –Series 205B Page 5

1.6 WARRANTY INFORMATION

The Warranty is given on the inside front cover of this Instruction Manual. If there is a need to

exercise the Warranty, contact the factory to determine the proper action to be taken.

NOTE attempting to repairortampering withthe unitwhile stillunderwarranty (less than12

months since the date of shipment) will void the warranty. All in-warranty repairs should be sent

to the factory.

Installation and Operating Manual –Series 205B Page 6

SECTION 2 - OPERATION

2.1 INSTALLATION

WARNING! This unit produces hazardous voltage. Do not apply line voltage input unless

adequate ground is connected to the unit and the high voltage output has been properly

connected.

2.2 FRONT PANEL CONTROLS AND DISPLAYS

Power Switch:

A rocker switch turns the line power on or off to the entire instrument. The display panel will be

lit when line power is applied to the unit.

Output Meter:

The digital output meter can display the output current or the output voltage. A switch below the

meter allows the operator to select which output parameter to monitor. The accuracy of the meter

is given in the Specification section.

Polarity Indicator:

An LED on the front panel display indicates the polarity of the output. The appropriate LED is lit

as soon as line power is applied regardless of whether high voltage output is enabled or disabled.

To change the polarity setting, see paragraph 2.4.

Voltage Controls:

The output voltage is the sum of the course and fine dial settings as described below.

Fine Adjust: A continuous, 10-turn, locking digital dial directly reads from 0 V to 1kV with a

resolution of 0.2V on all models.

Coarse Adjust: The voltage switch sets the output voltage in increments of 1kV. In addition, a 1

kV selector switch, with up to 10 positions, is provided on all 3kV to 30kV models. A 5 kV

selector switch, with up to 6 positions, is provided on all 20kV.

On 30kV & 50kV model a continuous multi-turn digital dial is used to adjust the high voltage

output. The resolution and repeatability of this control is 20.0V.

2.3 REAR PANEL CONTROLS, CONNECTORS, AND TERMINALS

Gnd:

Ground is connected to the case of the Series 205B.

Output Connector:

The HV output connector mates with a shielded mating connector supplied with each unit. Refer

to the specifications on page 12 to identify the mating connector. Assembly procedures for

mating connectors are given at the end of this manual. Only the proper mating connector should

be used with the indicated power supply and the power supply should NEVER be energized

without a mating connector and suitable load connected.

Installation and Operating Manual –Series 205B Page 7

Fuse:

The fuse is the ac line power fuse. It is rated for 1A, 250Vac for 105Vac-125Vac operation and

0.5A, and 250Vac for 210Vac-250Vac operation. Should a fuse ever need replacement, only

thesevaluesshould beused unlessotherwiseadvised by a qualified Del servicetechnician.

Line Voltage Selector:

The line voltage selector selects the appropriate line voltage 105Vac-125Vac or 210Vac-250Vac

at 50-60 Hz. By default, power supplies are shipped from the factory in the 105-125V position.

Before energizing your power supply, verify that the line voltage selector switch is in the proper

position for your mains input.

AC Line Plug:

The IEC 320 line plug receptacle accepts a three-wire female line plug for ac line power.

WARNING! This unit is equipped with a three-wire grounded line cord. This must be used

with a three-wire receptacle where the "third wire" is connected to earth ground; otherwise

personal injury or death may occur.

2.4 POLARITY REVERSING:

WARNING! Before attempting to reverse the power supply’s polarity, the power supply must

be turned off and the output fully discharged. Failure to follow these procedures may result in

damage to the power supply, associated test equipment and/or personnel.

For 1kV to 5kV output models, a screwdriver-adjustable POLARITY SELECTOR SWITCH is

accessible at the rear panel of the unit, next to the HV output connector. For 10kV to 50kV

output models, the polarity of the HV output is reversible by means of an internal switching

mechanism that is easily accessible upon removal of the top cover. The polarity reversal module

is a clear plastic assembly identified by the exiting silicone high voltage cables. It is a two-part

assembly. To change the polarity, turn off power supply, remove all cover screws holding the top

cover on and:

a. Remove the two diagonally opposed screws fastening the top portion of the module assembly

to the bottom portion. NOTE: DO NOT DESOLDER WIRES OR PINS.

b. Carefully separate the module by pulling the top portion from the bottom portion. The

module portions are fitted very snugly and removal may be eased by slightly rocking the

assembly.

c. Rotate the top portion of the module assembly 180°, taking care not to unduly stress the high

voltage cables.

d. Rejoin the 2 portions of the module assembly. Make sure that the top portion is entirely

seated to the bottom portion. NOTE: An interlock automatically insures that the high voltage

cannot be applied until the portions of the module are properly mated.

e. Re-secure the top portion to the bottom portion of the Polarity Reversal Module Assembly.

f. Re-cover the power supply.

Installation and Operating Manual –Series 205B Page 8

2.5 PREPARATION FOR USE

WARNING! Before energizing your power supply, thoroughly review and follow these

procedures. Failure to do so may result in damage to equipment and injury or death to

personnel.

To prepare the Series 205B for use, use the following procedure:

Set the Series 205B for the appropriate line voltage as specified in Section 2.3.

Connect a ground strap from case ground (on the rear panel) to a system common.

Select the appropriate HV output polarity for the application.

Set the front panel controls to:

a. Power Switch - OFF

b. Output Voltage Switch(s) –0 (205B only).

c. Multi Turn Digital Dial - 000 (fully counterclockwise)

Set the LOCAL/REMOTE (ANALOG/DIGITAL) rear panel switches (205B only) to:

a. LOCAL for local front panel operation.

b. REMOTE/ANALOG for remote analog operation. Note: Selecting the REMOTE

control will override all local front panel controls of the output.

c. REMOTE/DIGITAL for Computer Programming if equipped with a CBNY option.

Reference Section 2.7.

Plug the line cord into the power line with a three-wire IEC receptacle to maintain proper case

ground.

WARNING! This unit is equipped with a three-wire grounded line cord. This must be used

with a three-wire receptacle where the "third wire" is connected to earth ground; otherwise

personal injury or death may occur.

Connect the output of the Series 205B to the circuit. Use a properly rated shielded cable with the

supplied HV output connector to insure good circuit connections and safe operation. Refer to

Section 2.10.

WARNING! Prior to connecting or removing any equipment from the High Voltage power

supply, always return the Output Voltage Control(s) to 0V prior to applying or removing power.

External circuits may retain voltage after controls are set to zero. Discharge any residual

voltage before connecting or removing any equipment.

2.6 LOCAL OPERATION

Turn POWER - ON to the instrument. Slowly increase the output voltage using the appropriate

Voltage Control(s) until the desired output level is reached. Apply power to the load by

switching the High Voltage - ON. The output will quickly reach the value set by the controls.

Full stability will be achieved after approximately 30 minutes.

Installation and Operating Manual –Series 205B Page 9

2.7 REMOTE OPERATION

PROGRAM CONTROL SWITCH:

Before the Series 205B can be remotely programmed, the instrument must be configured by

setting the rear panel PROGRAM CONTROL SWITCH (S102) to the REMOTE ANALOG

position. All monitoring and enable functions are active, independent of the S102 switch, as are

the front panel meters. When in remote mode the front panel controls are inactive.

REMOTE PROGRAMMING:

The high voltage output can be remotely programmed from either an external voltage source or

with an external potentiometer using the internal reference voltage source (Pin 4). A 0 to +5Vdc

programming voltage applied to Pin 6 of J107 (PROGRAMMING/MONITOR) connector jack on

the rear panel will remotely program the high voltage output from zero to maximum output.

Programming can also be accomplished using a potentiometer connected between Pin 4 (+5Vdc),

Pin 7 (GND) and with the wiper connected to Pin 6 (PRGM INPUT). The potentiometer should

be a low temperature coefficient wirewound or cermet type, 5kΩto 20kΩresistance values. The

power supply output will be proportional to the programming input. The programming input

impedance is greater than 1MΩ. TABLE 2.1 below lists the PROGRAMMING / MONITOR

connector pin designations. The accuracy of the remote programming is detailed in the

Specifications section.

TABLE 2.1 - J107 PIN DESIGNATIONS

PIN # FUNCTION

1 Output voltage monitor, buffered, 0 to +5Vdc

(output impedance 10kΩ)

2 No connection

3 Enable/Disable. Input logic zero disables high

voltage generation. Open circuit or input logic

one enables high voltage generation.

4 Precision +5Vdc reference output referenced

to analog ground.

5 Output current monitor, buffered, 0 to +5Vdc

(output impedance 10kΩ)

6 Remote analog voltage programming input, 0

to +5Vdc

7 Analog Ground

8 Digital Ground

9 Polarity Indicator

REMOTE ANALOG MONITORING:

Buffered, analog output monitors, 0 to + 5Vdc, linearly proportional to the power supply's voltage

and current output are provided. To monitor the output voltage, connect a high impedance meter

to pin 1 and pin 7 (ground). To monitor the output current, connect a high impedance meter to pin

5 and pin 7 (ground). The accuracy of the voltage and current monitors is given in the

Specifications section. The monitor output impedance is approximately 10kΩ.

ENABLE/DISABLE:

A TTL level logic TRIP input signal can be used to enable or disable the power supply output

remotely. Input logic zero or grounding pin 3 disables high voltage generation. Open circuit or

input logic one on pin 3 enables high voltage generation.

Installation and Operating Manual –Series 205B Page 10

+5Vdc REFERENCE OUTPUT:

A precision +5Vdc reference output is provided on pin 4 for the user’s convenience. This fixed

output can be used for remote resistance programming (see REMOTE PROGRAMMING, above)

or various control functions. This output is referenced to analog ground (pin 7).

POLARITY INDICATOR:

A TTL polarity indicator output signal is available at pin 9. An NPN open collector connection

with respect to digital ground indicates the high voltage output polarity. NPN saturation denotes

positive polarity.

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