Oriel 68806 Manuale utente

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LlFlIEL

INSTRUMENTS

250 Long'Beach Boulevard

Stratford, CT 06497-0872

Phone: (203) 377-8282

Fax: (203) 378-2457

E-MAIL: [email protected]

68806-M

50-200 WATT He, Hg(Xe), and Hg

ARC LAMP POWER SUPPLY

MODEL 68806

Please read these instructions completely before operating this equipment.

there are any questions or problems

regarding the use of this equipment, please contact: ORIEL INSTRUMENTS -or -the representative from whom this

equipment was purchased,

L.O.T. -ORIEL S.A.

9 Avenue De Laponie

Z.A.

Courtaboeuf

91951

Les Ulis Cedex

France

Phone: 1-69-07-20-20

Fax: 1-69-07-23-57

L.O.T. -ORIEL ITALIA

Viale

Dei

Mille, 20

20129 Milano

Italy

Phone: 2-7012-6938

Fax: 2-7012-6767

06/17/96

D:\68806

L.O.T. -ORIEL GmbH

Tiefen See 58

D-64293 Darmstadt

Germany

Phone: (06151) 88060

Fax: (06151) 84173

FAIRLIGHT BV

Member L.O.T. -Oriel Group

Marshallweg 45

3068

Rotterdam

Netherlands

Phone: 010-4206444

Fax: 010-4206511

L.O.T. -ORIEL Ltd.

1 Mole Business Park

Leatherhead

Surrey KT22 7AU

England

Phone: 0372-378822

Fax: 0372-375353

L.O.T. -ORIEL SUISSE

Moulin-du-Choc

1122 Romanel-Sur-Morges

Switzerland

Phone: 021-8699033

Fax: 021-8699308

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TABLE

CONTENTS

HAZARDS/SAFETy..........................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1

POWER SUPPLY

.............................................................

1.2

ARC LAMPS AND LAMP HOUSINGS

.............................................

II.

SPECiFiCATIONS................................................................

III. INTRODUCTION

.............................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

111.1

DESCRIPTION

...............................................................

11.2

68806 FEATURES

............................................................

IV.

CONTROLS AND CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.1

FRONT PANEL

..............................................................

IV.2

REAR PANEL

................................................................

V.2

IGNITION

.........................

,.........................................

VI. CIRCUIT DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VI.1

GENERAL

.................................................................

VII. CALIBRATION AND TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VI1.1

CALIBRATION

.............................................................

VI1.2

TROUBLESHOOTING

.......................................................

VI1.3

SPECIFIC DESCRIPTIONS

...................................................

VIII. DRAWiNGS

...................................................................

WARRANTY AND RETURNS

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HAZARDS/SAFETY

1.1

POWER SUPPLY

68806-M

ARC LAMP POWER SUPPLY

Connections

or from any electrical device must never

made while the power supply is switched

on.

The Oriel Model 68806 Power Supply has

open circuit voltage of >100 volts when the start switch

is pressed, and could be dangerous if care

not exercised when the power supply is switched

on.

Please follow these precautions when operating the power supply:

• Make all input and output connections before turning the power supply on.

• Do not use the power supply without its cover.

Ensure that the output terminals are properly connected to the lamp housing or lamp socket before

turning

the power supply.

Don't open the power supply or disconnect the output leads while the power supply is on.

• Follow the lamp or lamp house manufacturer's recommendations and precautions when handling and

using lamps.

Never touch the lamp's quartz envelope with uncovered fingers; definitely not when operating the

lamp or immediately after a shutdown. Also, follow this precaution during lamp installation to avoid

damage to the lamp.

Do not start the lamp with the output control set above the current rating for the lamp.

1.2

ARC LAMPS AND LAMP HOUSINGS

Make sure that the leads are properly connected to the arc lamp. INCORRECT CONNECT/ON WILL

DESTROY THE LAMP ELECTRODES,

AND

POSSIBLY CAUSE

EXPLOSION.

XENON AND MERCURY XENON ARC LAMPS

Xenon and Mercury Xenon arc lamps only operate with the anode (positive end)

up.

When

ORIEL

LAMP

HOUSING

used with a Xenon lamp, you should connect the cable from the

connection) on the lamp housing to the + (red) connection on the rear of the power supply.

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MERCURY ARC LAMPS

68806-M

ARC LAMP POWER SUPPLY

Mercury (Hg) lamps only operate with the anode (positive end) down. Unlike Xe and Hg(Xe) arc lamps,

which stabilize quickly to the preset current, Mercury lamps require some time to reach their stable

operating condition. Several minutes

typical, but the exact time depends on the cooling of the lamp.

• Make sure that the lamp is adequately cooled. A lamp, not properly cooled, will warm

and may

lead to

explosion.

not over cool the lamp. Over cooling will prevent the lamp from warming

up.

The lamp will operate

an unstable manner with a high light ripple, and possibly shortening its useful life.

USE

APPROPRIATE ORIEL

LAMP

HOUSING WITH THE

ARC

LAMPS

MAINTAIN PROPER COOLING

During warm

up,

a Mercury lamp has a lower impedance than NORMAL OPERATION. The voltage

during a warm

lower than the final voltage and if the lamp

run at the rated power, the current

higherthan rated current. The 68806 Power Supply controls the current rather than the lamp power.

Increasing the current during lamp warm up will speed

the process.

Make sure to reduce the current as the lamp warms up or the lamp will run at higher than rated

power. THIS WILL CAUSE SHORTER LAMP LIFE OR EXPLOSION.

The lamp

a source of constant current.

prevent overpowering of the lamp

it ages,

monitor its current on regular basis.

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II.

SPECIFICATIONS

AC Mains Input:

DC Power Output:

DC Current Output:

DC Voltage Output:

Pre-ignition

Operating

Light Output Ripple:

Resistive Load

Arc Lamp Load

Pre-Adjust Accuracy:

Power Meter Accuracy:

Line Regulation:

190-235

VAC

mains input

95-135

VAC

@ 8 amperes

135-270

VAC

@ 4 amperes

50 or 60 Hertz, 10 ampere inrush

300 watts maximum

Adjustable from 0.5 -

amperes

Current limit at 12 amperes

> 150 volts unloaded

68806-M

ARC LAMP POWER SUPPLY

Load dependent.

Total

output power should not exceed 240 watts.

< 0.25% R.M.S. 40 Hz to 40 kHz

Dependent on lamp, and operating conditions.

Typically < 0.5% R.M.S.

0.1

% change in output current for a 95-135

VAC

mains input or a

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III. INTRODUCTION

111.1

DESCRIPTION

68806·M

ARC LAMP POWER SUPPLY

The Oriel model 68806 arc lamp power supply

a highly regulated source of current that maintains

constant light output necessary for proper operation of arc lamps. Constant current operation of these

sources of radiation

required whenever a radiometric measurement

being made or whenever a highly

stable light output is needed.

The 68806 allows arc lamps to operate

constant current mode, with the output voltage being dependent

on the lamp's impedance. The power supply will provide a constant current of up to

amperes with a

load voltage range of 0 to 100 volts. A power limit, which limits the product of output voltage and current

to 300 watts, protects the unit from output overloads. A constant current power supply regulates current

even into a short circuit. Lamp current

limited to a maximum of 12 amperes. The reduced inrush

•..

current minimizes electrode erosion when starting the arc lamp. The Oriel model 68806 Arc Lamp Power

Supply includes all of the circuitry to start and power the lamps, and meter the output parameters.

.The following Oriel arc lamps may be operated with the model 68806 Arc Lamp Supply:

MODEL DC DC

NO. DESCRIPTION VOLTAGE (V) CURRENT (A)

6251

75 Watt Xe 14 5.4

6263 75 Watt Xe (Ozone free) 14 5.4

6254 150 Watt Xe UV (Ozone free) 20 7.5

6255 150 Watt Xe (Ozone free) 20 7.5

6356 150 Watt Xe 20 7.5

6282 50 Watt Hg 22 2.3

6281

100 Watt Hg 20 5

6283 200 Watt Hg 47-65 3.1-4.2

6291

200 Watt HgXe 20-25 8-9.5

6292 200 Watt HgXe (Ozone free) 20-25 8-9.5

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11.2

68806 FEATURES

Please refer to Figure 1 for the described equipment features.

Controlled source of current to a wide variety of lamps.

Built-in high voltage ignitor to start the arc lamp.

68806-M

ARC LAMP POWER SUPPLY

A preset switch allows for setting the output current to the recommended operating value before

lamp start.

Contains circuitry to allow viewing the output current, the output voltage, and the output power.

interlock function that prevents the power supply from operating unless it is closed. Typical uses

for the interlock on ORIEL equipment are:

Microswitches to prevent access to the lamp area (electrical, optical, and other hazards).

Thermal cutoffs to disable the power supply if the lamp housing overheats.

ORIEL lamp housings use this interlock for operator safety and to disable the power supply if the lamp

housing overheats.

Adjustable 0.5 to

A current output.

Voltage compliance from 0 to 100

300 Watt power limit for operating all arc lamps that are rated for

operation

this voltage, current,

and power range.

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IV.

CONTROLS AND CONNECTIONS

68806-M

ARC LAMP POWER SUPPLY

This

section

will

describe

the

various

controls,

the

available

connections,

and

their

function.

Please

become

familiar

with

their

uses

before

operating

the

power

supply

with

any

lamps.

This

will

reduce

the

possibility

damaging

the

power

supply

the

lamps

through

improper

operation.

IV.1

FRONT PANEL

AMPS

OUTPUT

PRE-ADJUST

Figure

1 68806

Front

Panel

Layout

METER AND VOLTAGE, WATTS,

AND

AMPS SWITCH

POWER

[ID[

The analog meter,

Figure 1), is scaled to display the output voltage,

current,

and wattage. Keep

mind that the metermonitors the output voltage

the supply notthe load, and that

the

outputpower

is always displayed

the

meter. The one exception is when the preadjust switch is pressed and

operating current is displayed. The

select

switch,

(8 in Figure 1), enables you to momentarily view the

output

voltage

current

pressing it left or right, respectively.

OUTPUT AND CURRENT PREADJUST SWITCH

A ten turn

potentiometer,

Figure 1),

used to provide a precise means of output current

adjustment. A shaft lock

mounted with this knob to lock

a setting if a readjustment from a previous

current setting

not desired. When the

preadjust

switch

(0,

Figure

is pressed, the meter will display

the value of the output current that will be delivered

the lamp after lamp start.

POWER SWITCH

This

the AC mains power switch

Figure 1).

the "ON" position AC power will

switched into the

main circuitry of the power supply, and an integral indicator lamp will glow to indicate that the power

supply is on. The power switch

also a circuit breaker which will open both of the AC lines to the internal

circuitry

case of a fault within the unit.

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IV.2 REAR PANEL

J306 8301 J301

+ Interlock

J307 J304

Figure

2 68806 Rear Panel

Layout

AC MAINS INPUT (J304,

Figure

68806-M

ARC LAMP POWER SUPPLY

J304 is an IEC style socket which will accept power cords for worldwide use of the power supply. The

mains cord

connected here.

LINE VOLTAGE SELECTOR (S301,

Figure

••

8301 sets the input voltage range for a nominal 115

VAC

or 230

VAC.

factory preset for your area,

but should be checked before using the power supply.

INTERLOCK SOCKET (J301,

Figure

This connection must be made, otherwise the main power supply will not turn on. ORIEL normally ships

a shorting plug which mates to this socket. The shorting plug must be replaced with the connector that

is supplied with the lamp housing in order to take advantage of its protection feature. Lamp housings

available through ORIEL use this connection as a safety arc lamp shut-off

case the access doors are

opened when the lamp

operating or

case of an excessive temperature rise within the lamp housing.

If you are not using an ORIEL lamp housing, for personal safety you should consider including

interlock

circuit

your equipment.

OUTPUT CONNECTIONS (J306 and J307,

Figure

These two UHF screw

connectors are the connections for the main DC output to the load. J306

the

positive, and J307

the negative. The low voltage side of

external ignitor or a lamp housing with built-

ignitor

connected to these two outputs. Both are earth ground isolated. Never

make

any

electrical

connections

these

sockets

with

the

power

supply

on.

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