TDK-Lambda 203, 303, 203L, 303L Operator's Manual

OPERATOR MANUAL FOR

303 Series 2 High Voltage

POWER SUPPLY

Document: 83489011 Rev A

405 Essex Road, Neptune, NJ 07753

Web: www.us.tdk-lambda.com/hp

TDK-LAMBDA AMERICAS

Tel: [phone]
Fax: [phone]

TABLE OF CONTENTS

Table of Contents

1. GENERAL INFORMATION..........................................................................1-1

1.1 INTRODUCTION....................................................................................................1-1

1.2 203 and 303 OVERVIEW.......................................................................................1-1

1.2.1 FEATURES..................................................................................................................... 1-1

1.2.2 BENEFITS....................................................................................................................... 1-1

1.2.3 APPLICATIONS:............................................................................................................. 1-1

1.3 CAPACITOR CHARGING TECHNOLOGY ............................................................1-2

1.4 CONTINUOUS DC OPERATION ...........................................................................1-2

1.5 ADDITIONAL FEATURES:.....................................................................................1-2

1.6 SAFETY PRECAUTIONS.......................................................................................1-3

1.7 SCOPE OF THIS MANUAL....................................................................................1-4

1.8 MODEL NUMBER FORMAT ..................................................................................1-4

2. SPECIFICATIONS .......................................................................................2-7

2.1 Output Power .........................................................................................................2-7

2.2 Polarity ............................................................................................................2-7

2.3 H.V. Return ............................................................................................................2-7

2.4 Pulse to Pulse Repeatability...................................................................................2-7

2.5 Rep Rate ............................................................................................................2-7

2.6 Protection ............................................................................................................2-7

2.7 Input Power:...........................................................................................................2-8

2.8 Phase Configuration...............................................................................................2-8

2.9 Power Factor..........................................................................................................2-8

2.10 Efficiency ............................................................................................................2-8

2.11 AC Line Filtering.....................................................................................................2-8

2.12 Inrush Current ........................................................................................................2-8

2.13 Max. Discharge ......................................................................................................2-8

2.14 Physical Specifications...........................................................................................2-8

2.15 Cooling Water........................................................................................................2-8

2.16 Water Fittings.........................................................................................................2-9

2.17 Weight ............................................................................................................2-9

2.18 Shock and Vibration...............................................................................................2-9

2.19 Shipping ............................................................................................................2-9

2.20 Air Temperature Range..........................................................................................2-9

2.21 Humidity ............................................................................................................2-9

2.22 Altitude ............................................................................................................2-9

i

3. OUT-OF-BOX-INSPECTION......................................................................3-11

3.1 VISUAL INSPECTION..........................................................................................3-11

3.2 ELECTRICAL INSPECTION.................................................................................3-11

3.2.1 TEST 1 .......................................................................................................................... 3-11

3.2.2 TEST 2 .......................................................................................................................... 3-11

3.3 CONTACTING TDK-LAMBDA AMERICAS CUSTOMER SERVICE.....................3-12

3.4 RETURNING DEFECTIVE UNITS .......................................................................3-12

4. INSTALLATION .........................................................................................4-13

4.1 19-INCH RACK MOUNTING ................................................................................4-13

4.2 VENTILATION REQUIREMENTS ........................................................................4-14

4.3 WATER COOLING REQUIREMENTS.................................................................4-14

4.4 ORIENTATION.....................................................................................................4-14

4.5 AC POWER CONNECTION.................................................................................4-15

83489011 Rev A

ii

TABLE OF CONTENTS

4.6 CONNECTING THE HIGH VOLTAGE OUTPUT..................................................4-16

5. CONTROLS, INDICATORS, CONNECTORS..............................................5-1

5.1 FRONT PANEL LAYOUT (L Model).......................................................................5-1

5.2 HV ON (Ref 1)........................................................................................................5-2

5.3 OUTPUT STATUS LEDs (Ref 2)............................................................................5-2

5.3.1 HV ON LED..................................................................................................................... 5-3

5.3.2 HV OFF LED................................................................................................................... 5-3

5.3.3 INHIBIT LED....................................................................................................................5-3

5.3.4 END OF CHARGE LED ..................................................................................................5-3

5.3.5 INTERLOCK OPEN LED.................................................................................................5-3

5.3.6 LOAD FAULT LED.......................................................................................................... 5-3

5.3.7 OVERTEMP LED............................................................................................................ 5-3

5.4 LOCAL VOLTAGE CONTROL (Ref 3) ...................................................................5-3

5.5 VOLTAGE BAR GRAPH (Ref 4).............................................................................5-4

5.6 VOLTAGE DISPLAY (Ref 5) ..................................................................................5-4

5.7 CURRENT DISPLAY (Ref 6)..................................................................................5-4

5.8 HV OFF/RESET (Ref 7) .........................................................................................5-4

5.9 OFF/LOCAL/REMOTE KEYSWITCH (Ref 8).........................................................5-4

5.10 POWER SUPPLY STATUS LEDs (Ref 9)..............................................................5-4

5.10.1 STATUS LED GROUP....................................................................................................5-4

5.10.1.1 ENABLE............................................................................................................5-4

5.10.1.2 INHIBIT ............................................................................................................. 5-4

5.10.1.3 AUTOINHIBIT (Normally OFF) ......................................................................... 5-5

5.10.1.4 SUMMARY FAULT (NormallyOFF) ................................................................. 5-5

5.10.1.5 LOAD FAULT (Normally OFF)..........................................................................5-5

5.10.1.6 LINE FAULT (Normally OFF)............................................................................ 5-5

5.10.2 HIGH VOLTAGE LED GROUP....................................................................................... 5-5

5.10.2.1 HV ON............................................................................................................... 5-5

5.10.2.2 HV OFF.............................................................................................................5-5

5.10.2.3 END OF CHARGE (Normally OFF)..................................................................5-5

5.10.2.4 EXCESS REVERSAL (Normally OFF).............................................................. 5-5

5.10.2.5 INTERNAL ARC (Normally OFF)...................................................................... 5-6

5.10.2.6 CLAMP (NormallyOFF).................................................................................... 5-6

5.10.3 COOLANT LED GROUP.................................................................................................5-6

5.10.3.1 FULL (Normally ON) ......................................................................................... 5-6

5.10.3.2 WARNING (NormallyOFF)............................................................................... 5-6

5.10.4 FAULT (Normally OFF)................................................................................................... 5-6

5.10.4.1 OVERTEMP (Normally OFF)............................................................................ 5-6

5.10.4.2 PURGE VALVE (NormallyOFF)....................................................................... 5-7

5.10.4.3 OVER PRESSURE (NormallyOFF)................................................................. 5-7

5.10.5 INPUT POWER LED GROUP (External Faults)............................................................. 5-7

5.10.5.1 HIGH LINE (Normally OFF)..............................................................................5-7

5.10.5.2 LOW LINE (NormallyOFF)............................................................................... 5-7

5.10.5.3 IMBALANCE (NormallyOFF)............................................................................5-7

5.10.5.4 INTERLOCK OPEN (Normally OFF) ................................................................ 5-7

5.10.5.5 BIAS FAULT (Normally OFF)............................................................................5-8

5.10.5.6 FAN FAIL (Normally OFF) ................................................................................ 5-8

5.11 VIEW SET push button (Ref 10) ............................................................................5-8

5.12 CURRENT BAR GRAPH (Ref 11).........................................................................5-8

5.13 AC POWER (Ref 12)..............................................................................................5-8

5.14 FRONT PANEL LAYOUT (S Model).......................................................................5-8

5.15 REAR PANEL LAYOUT (L Models)........................................................................5-9

5.15.1 INHIBIT BNC (Ref 1).....................................................................................................5-11

5.15.2 Coolant Water Inlet/Outlet (Ref 2/4)..............................................................................5-11

5.15.3 HV Output Connector....................................................................................................5-11

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TABLE OF CONTENTS

5.15.4 Cooling Fan ................................................................................................................... 5-11

5.15.5 Interlock/Power On Terminal strip.................................................................................5-11

5.15.6 Remote connector.........................................................................................................5-11

5.15.7 Slave connector.............................................................................................................5-11

5.15.8 Coolant service valve.................................................................................................... 5-11

5.15.9 Tank pressure gauge .................................................................................................... 5-11

5.15.10 Safety ground ................................................................................................................ 5-12

5.15.11 AC input terminal...........................................................................................................5-12

5.16 REAR PANEL LAYOUT (S Models) .....................................................................5-12

6. OPTIONAL FEATURES.............................................................................6-13

6.1 LOW ENABLE OPTION (-EN)..............................................................................6-13

6.2 5V PROGRAMMING OPTION (-5V).....................................................................6-13

6.3 LATCHING OVERLOAD PROTECTION OPTION (-LP).......................................6-13

6.4 CONTINUOUS DC OPTION (-DC).......................................................................6-13

6.5 REMOTE SENSE (-RS) .......................................................................................6-14

7. OPERATING INSTRUCTIONS ..................................................................7-15

7.1 LOCAL OPERATION (203/303L only)..................................................................7-15

7.2 REMOTE OPERATION (All models)....................................................................7-16

7.2.1 Remote Control Signals ................................................................................................7-17

7.2.2 Remote Operation with AUTOINHIBIT..........................................................................7-17

7.2.3 Remote Operation with INHIBIT....................................................................................7-19

7.3 Parallel Operation.................................................................................................7-20

7.3.1 Parallel system comprising 203/303L supplies ............................................................. 7-20

7.3.2 Parallel system comprising both 203/303L and 203/303S supplies.............................. 7-21

7.3.3 Parallel system comprising 203/303S supplies.............................................................7-21

iii

8. APPLICATION NOTES ..............................................................................8-23

List of Figures

FIGURE 4-1 203/303L FRONT VIEW......................................................................................... 4-13

FIGURE 4-2 203/303 REAR VIEW.............................................................................................4-14

FIGURE 4-3. AC INPUTTERMINAL BLOCK ................................................................................. 4-15

FIGURE 4-4 TYPICAL LOAD CIRCUIT CONNECTION..................................................................... 4-17

FIGURE 5-1. 203/303L FRONT PANEL CONTROLS AND INDICATORS............................................. 5-1

FIGURE 5-2 203/303S FRONT PANEL CONTROLS AND INDICATORS..............................................5-9

FIGURE 5-3 203/303L REAR PANEL CONNECTIONS ..................................................................5-10

FIGURE 5-4 203/303S REAR PANEL ........................................................................................5-12

FIGURE 7-1. EXTERNAL REMOTE INTERFACE CIRCUIT. ............................................................... 7-18

FIGURE 7-2 REMOTE INTERFACE WAVEFORMS FOR 303 OPERATED WITH AUTOINHIBIT........... 7-19

FIGURE 7-3 REMOTE INTERFACE WAVEFORMS FOR 303 OPERATED WITH INHIBIT......................7-20

FIGURE 7-4 PARALLEL OPERATION CONNECTIONS.................................................................... 7-21

83489011 Rev A

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TABLE OF CONTENTS

List of Tables

TABLE 1-1 MODEL DESCRIPTION FORMAT .................................................................................. 1-5

TABLE 4-1 RECOMMENDED AC INPUT CABLE............................................................................ 4-16

TABLE 5-1 FRONT PANEL CONTROLS AND INDICATORS (L MODEL)............................................... 5-2

TABLE 5-3 FRONT PANEL CONTROLS AND INDICATORS (S MODEL) .............................................. 5-9

TABLE 5-4 203/303L REAR PANEL FUNCTIONS......................................................................... 5-11

TABLE 6-1 203/303 REMOTE INTERFACE DESCRIPTION............................................................. 7-17

83489011 Rev A

GENERAL INFORMATION

1. GENERAL INFORMATION

1.1 INTRODUCTION

TDK-Lambda’s ALE series 203 and 303 are state of the art switch mode high voltage
power supplies, designed primarily for capacitor charging applications such as laser sys­tems, modulators, and pulse forming networks. They can also be used in many continu­ous DC applications including beam power for magnetrons, gyrotrons, klystrons and
electron beam loads.

The 203L and 303L Models are fully instrumented with front panel meters displaying
output voltage and current, status LEDs, a key switch for OFF, LOCAL or REMOTE op­eration, HV ON/OFF push-button switches, and a control for output voltage adjustment.
The rear panel features external interlock, external inhibit, remote control and slave
(parallel operation) control connections.

The 203S and 303S Models can only be operated by remote control and feature only
front panel status LEDs. The "S" Models have been designed to operate as a slave unit
to the "L" Models or in systems where local control is not a requirement. As many 203 or
303 supplies as required, can be connected in parallel to provide greater output power.

1.2 203 and 303 OVERVIEW

1-1

1.2.1 FEATURES

 203 - 20kJ/sec capacitor charging power, 30kW in continuous DC.
 303 - 30kJ/sec capacitor charging power, 50kW in continuous DC.
 Output voltages from 0-1kV to 0-50kV
 Rep rates from single shot to several hundred hertz.
 Local or remote operation (L Model) with comprehensive control interface.
 Parallel operation (master/slave) for high power applications.
 Water-cooling for major means of excess heat removal.
 State of the art "Heat Pipe Cooling" system.

1.2.2 BENEFITS

 Smallest package size available in this power range (50kW in 12.25” package)
 Highest power available in a single package
 Low EMI/RFI
 Low ambient heating and quiet operation
 Lightweight switchmode design
 Rack mount chassis configuration
 Low stored energy provides greater safety
 Immunity to external EMI

1.2.3 APPLICATIONS:

 Charging capacitors and capacitor banks.
 Powering pulse forming networks/modulators.

83489011 Rev A

1-2

 Powering lasers: Excimer, flashlamp pumped dye, Yag, CO2, etc.
 Line type modulators for RF generation and pulse discharge applications in re-

search.

 Continuous power for RF tubes – magnetron, gyrotron, TWT, klystron etc.
 Electron beam applications.
 DC power source for pulsed hard-tube and solid state modulators.

1.3 CAPACITOR CHARGING TECHNOLOGY

Capacitor charging applications require a power supply designed specifically for the
task. The Series 203 and 303 supplies allow capacitors to be charged in pulse forming
networks and modulators in a very fast, efficient and controllable manner.

The units are compact high power constant current sources that can linearly and rapidly
charge a capacitive load to high voltage. Once the load capacitor is charged to the pro­grammed voltage, the supply will switch over to a voltage regulation mode and maintain
the load voltage at the programmed level until the load is discharged.

The flexible design of the 203 and 303 allow the units to be ordered with (L model) or
without (S model) the front panel controls and meters. The front panel controls are ideal
in applications where local control and readbacks are necessary, such as R&D, labora­tory use and diagnostics. All front panel controls and indicator signals are available at
the rear panel remote control connector regardless which front panel option (L or S) is
selected. The S models feature only front panel status indicators and remote controls
and are a cost effective solution for applications where local controls are unnecessary.

The unit is self-contained, requiring only AC power and water for cooling. Several units
may be connected in parallel for higher power operation. There is no theoretical limit to
the number of units that may be paralleled. Typically one master unit and one or more
slave units may be used to obtain as much output power as necessary. Consult the

factory before connecting parallel units in continuous or DC applications.

The 203 and 303 are also ideally suited to charge reservoir capacitors in resonant
charging circuits where high rep rates (several kilohertz) are required, such as in metal
vapor lasers or solid-state modulators.

GENERAL INFORMATION

1.4 CONTINUOUS DC OPERATION

Although the 203 and 303 series has been designed for capacitor charging applications,
they can also be used as a continuous DC High Power Source for RF tubes such as
klystrons, TWTs, or other DC loads such as DC-DC converters. The DC option must be
specified when ordering, and the supply will be factory setup and tested with a continu­ous DC load. When 203/303 supplies are operated in continuous DC applications it is
necessary to add an external capacitor between the load and ground to improve the rip­ple performance of the unit. Our online Application Note 505 describes operating capaci­tor charging supplies in DC applications, and gives guidance in determining the size of
any additional external filter capacitance required.

App Note 505 can be found at:

http://www.us.tdk-lambda.com/hp/pdfs/application%20notes/93008505rC.pdf

1.5 ADDITIONAL FEATURES:

 Internal contactor and fuses for AC disconnect and protection

83489011 Rev A

GENERAL INFORMATION

 Standard AC power and control connectors
 Documentation Manual Including -

Installation
Check out
Block diagram
Suggested remote interfaces and control circuits

 10 ft (3m). output cable is standard, other lengths are optional.

NOTE: This manual contains information, instructions and diagrams which apply to
standard constructions. If special features or modifications have been installed, the
instructions specific to that modification are contained in Addenda and take prece­dence if conflicts exist. Please take care to refer to the correct information for your
unit.

1.6 SAFETY PRECAUTIONS

All 203 and 303 power supplies are designed to mini­mize the risk of fire or shock hazard. This instrument
received comprehensive mechanical and electrical in­spection prior to shipment. Nevertheless, certain safety

precautions must be observed. Only TECHNICALLY
QUALIFIED SERVICE PERSONNEL familiar with the principles of electrical safety should
operate this supply. The power supply SHOULD NOT BE EXPOSED TO WATER
(EXCEPT COOLING CONNECTIONS) OR MOISTURE OR DUSTY ENVIRONMENTS.
Electrical safety must be maintained at all times.

Lethal voltages are developed within the power supply's enclosure and at the output ca­ble. Therefore, the cover may not be removed by the user (see Warranty in preamble sec­tion for variance). Also, the large capacitors in the supply may store power even after the
AC input line is removed. ALLOW AT LEAST 40 SECONDS DISCHARGE TIME between
removing the AC input line and opening the cover. ALSO, ALLOW AT LEAST 40
SECONDS between switching the AC power off and switching it on again.

1. This product is designed for Indoor use

1-3

2. This product is designed for pollution degree 2.

3. This product is designed for Transient Overvoltage Category II

4. Ensure all covers are in place and securely fastened before switching ON the AC power.

5. Proper grounding from the input AC power is required to reduce the risk of electric
shock. Ensure that the AC Protective Earth Ground connection has at least the same
gauge wire as the supply leads shown in Table 4-1.

6. Where high leakage exists and there is a warning label on the rear panel, the Protective
Earth Ground must be connected. (Symbol for protective earth ground ).

7. Use extreme caution when connecting AC input power, and never apply the incorrect in­put voltage, refer to ratings label.

8. Use extreme caution when connecting the high voltage output cable to the load.

9. Ensure all load capacitors are completely discharged prior to connection. Never handle
the output cable when the power supply is operating.

83489011 Rev A

1-4

GENERAL INFORMATION

10. Never attempt to operate the power supply in any manner not described in this manual.

11. Never remove DANGER and WARNING labels from the power supply. Replace lost or
damaged labels immediately.

12. The power supply should only be serviced by TDK-Lambda Americas factory authorized
personnel.

13. No user maintenance is required.

14. No cleaning is required.

1.7 SCOPE OF THIS MANUAL

This manual is used for installing and operating the 203 and 303 Series 2 Power Supply
with a revised front panel layout shown in Figure 4-1. For older model 303 supplies refer
to manual part number 83489009 which can be found on our web site. Suggestions and
requirements for connecting AC power, load cables and signal cables are given. Various
operating modes and programming modes are described.

1.8 MODEL NUMBER FORMAT

The model numbering system for the 203 and 303 Series power supply includes sym­bols for features and options. They are separated by dashes.

Examples are: 303L-10kV-POS-400VAC and 203S-20kV-POS-DC.
The 203 and 303 are available with two basic front panel configurations, the L, and S.

The choice of panel configuration is dependent upon the installation and system re­quirements. See section 5 for further details.

Table 1-1 shows a partial listing of the model description format for the 203/303 Power
Supply family. For additional options, the customer may contact the Sales Department
at TDK-Lambda Americas. Special options are typically shown as a four-digit suffix to
the model number.

83489011 Rev A

GENERAL INFORMATION

203/303(model) - (voltage) - (polarity) - (mode) - (input) - (options)

Model (L, or S)
Output Voltage Range kV
POS or NEG Polarity

Standard

DC

Mode

Capacitor

Charging

Continuous

DC Operation

Blank

DC

AC INPUT VOLTAGE

432-528 VAC,

Standard

400VAC

Option

50-60 Hz

3 (88A Max)

360-440 VAC,

50-60 Hz

3 (100A Max)

(1)

Input Suffix

Blank

400VAC

OPTIONS

5V Programming 5V

Low Enable EN

Custom cable

length

Other options xxxx

1-5

xxxx

208VAC

Option

180-264 VAC,

50-60 Hz

3(95A Max)

208VAC

Note 1. See Input power table specification section 4.5 for more details.

Table 1-1 Model Description Format

83489011 Rev A

1-6

GENERAL INFORMATION

NOTES:

83489011 Rev A

SPECIFICATIONS

2. SPECIFICATIONS

2.1 Output Power

2-7

AC INPUT
VOLTAGE

432-528 VAC,

50-60 Hz, 3

360-440 VAC,

50-60 Hz, 3

180-264 VAC,

50-60 Hz, 3

MODE

Cap Charging 20kJ/sec av, 25kJ/sec pk 30kJ/sec av, 37.5kJ/sec pk
Continuous DC 30kW 50kW
Cap Charging 20kJ/sec av, 25kJ/sec pk 25kJ/sec av, 32.5kJ/sec pk
Continuous DC 30kW 40kW
Cap Charging 20kJ/sec av, 25kJ/sec pk Not Available
Continuous DC 20kW Not Available

2.2 Polarity

Fixed positive or negative (specify when ordering)

2.3 H.V. Return

Ground through H.V. output cable shield to chassis, and through separate safety ground
cable.

2.4 Pulse to Pulse Repeatability

± 0.5% full load range and input voltage range into minimum capacitance (value dependent on
minimum voltage range).

MAXIMUM OUTPUT POWER RATING

MODEL 203 MODEL 303

2.5 Rep Rate

Single shot to 200 Hz. Lower regulation for 200Hz to 1 kHzrates.

2.6 Protection

Open circuit at turn on
Output over voltage
Output short circuit
AC input power failure
AC input power out of range
Excess voltage
Over and under temp

83489011 Rev A

2-8

2.7 Input Power:

SPECIFICATIONS

AC INPUT VOLTAGE

432-528 VAC,

50-60 Hz, 3

360-440 VAC,

50-60 Hz, 3

180-264 VAC,

50-60 Hz, 3

Note (1): Refer to section 2.1 for output power rating

2.8 Phase Configuration

Wye or Delta, any rotation, separate ground.

2.9 Power Factor

0.9 at full load and nominal AC line

2.10 Efficiency

85% at full load and nominal AC line

MAXIMUM INPUT CURRENT

MODEL 203 MODEL 303

40A/Phase (Cap charging) 60A/Phase (Cap charging)

60A/Phase (Continuous DC) 98A/Phase (Continuous DC)

47A/Phase (Cap charging) 71A/Phase (Cap charging)

71A/Phase (Continuous DC) 94A/Phase (Continuous DC)

94A/Phase (Cap charging) Not Available

94A/Phase (Continuous DC) Not Available

(1)

2.11 AC Line Filtering

Passive power factor correction and EMI filters included

2.12 Inrush Current

Limited to below full power level

2.13 Max. Discharge

15 seconds to safe output level at output cable without external load consideration.

2.14 Physical Specifications

Size: 19" (483 mm) Rackmount standard front panel

17" (432 mm) chassis width

12.25" (311 mm) High
22" (559 mm) Deep + 5" (127 mm) for cables

2.15 Cooling Water

Maximum exit temperature for cooling water at approximately 2.0 US gpm (7.6 L/min) is 35°C
Minimum exit temperature for cooling water at approximately 2.0 US gpm (7.6 L/min) is 15°C
(Higher temperature water requires greater flow). All water paths are at ground potential and are
copper or brass.

83489011 Rev A

SPECIFICATIONS

2.16 Water Fittings

1/4 inch NPT male threaded pipes

2.17 Weight

190 lbs. (86.4 kg) approx.

2.18 Shock and Vibration

Unboxed 0.5 g.
Factory packing2.0 g

2.19 Shipping

Gross weight with packingmaterial: 240 lbs. (109 kg) approx.
Size: 27"W X 21" H X 30"D (686 mm X 535 mm X 762 mm)

2.20 Air Temperature Range

Operating: 0°C to 55°C ambient air

Storage: -55°C to 70°C

2.21 Humidity

2-9

Operating: 0% to 90% (Non-condensing)
Storage: 0% to 90%

2.22 Altitude

Operating: 12,000 ft. (3658 m)
Storage: 30,000 ft. (9144 m) at 25°C or less

83489011 Rev A

2-10

SPECIFICATIONS

NOTES:

83489011 Rev A

OUT-OF-BOX-INSPECTION

3. OUT-OF-BOX-INSPECTION

3.1 VISUAL INSPECTION

Prior to shipment, this instrument was inspected and found to be free of mechanical and
electrical defects. As soon as the unit is unpacked, inspect for any damage that may
have occurred in transit. Verify the following:

A. Check the operation of the front panel control (knob should rotate smoothly).
B. Confirm that there are no dents or scratches on the panel surfaces.
C. Check front panel meters and LEDs for any broken or cracked lenses.

If any damage is found, follow the instructions in Section 3.3 and in the "Returning
Equipment" instructions in the preamble section of this manual.

3.2 ELECTRICAL INSPECTION

Before the power supply is installed in a system, verify that no internal damage occurred
during shipping. A simple preliminary electrical test should be performed. These tests
are described below. Note: The sequences described are for L models, for S models
the corresponding signals must be applied and monitored through the remote control in­terface.

3-11

3.2.1 TEST 1

Purpose: Verify general logic operation and generate maximum output current and

check overload protection circuits. With AC power "OFF" and disconnected, short the
H.V. output by connecting the center conductor of the output cable to its return shield
(braid). This dead short will allow the unit to generate full output current at zero voltage.

1. Set the output voltage control to zero. Connect the AC power to the unit. Turn "ON"

the AC power front panel switch.

2. Turn the front panel keyswitch to the LOCAL position (if applicable). Press the H.V.

"ON" button and turn up the H.V. control until the power supply is generating output
current into the dead short. The current meter will indicate max. current. The voltage
meter will read zero and the power supply will intermittently turn on and off indicating
the "overload" condition. The unit should continue to cycle in this mode with a 1 sec.
repetition rate indefinitely. (The power supply will go into overload when max. current
is drawn for more than half a second).

3. Turn off the H.V. and A.C. power switches.
This test indicates the inverter section is generating maximum current and the logic and

overload circuitry works correctly.

3.2.2 TEST 2

Purpose: Verify that the power supply generates maximum rated voltage, and the regu-

lation and feedback circuits are functioning.

1. With AC power OFF and disconnected, connect an appropriate load capacitor to the

power supply output cable.

2. Prepare to charge the capacitor. NOTE: Operating a 203 or 303 power supply into

an open circuit (no load operation) will instantly damage the power supply's H.V.
output diodes. Make sure the load (capacitor) is connected and the H.V. output ca­ble is securely inserted and connected.

83489011 Rev A

3-12

OUT-OF-BOX-INSPECTION

3. For L models turn the voltage control on the front panel turned all the way down to

zero (counter clockwise), apply AC power and press the HV ON button. By turning
up the H.V. control knob the capacitor will charge to the voltage indicated on the
front panel voltmeter. The power supply may be turned all the way up to its max.
output voltage provided the load capacitor is sufficiently rated.

4. By turning the voltage control down or depressing the H.V. OFF button, the capacitor

will "bleed" down through the internal voltage divider resistors used for regulation
feedback.

Test #2 indicates the H.V. section is working correctly. Tests 1 and 2 generally indicate
the unit is functioning as designed. Although 100% power had not been generated, the­se two tests give greater than 90% confidence that the unit is not damaged.

If any inconsistency from the above test procedure is noted, do not hesitate to call TDK­Lambda Americas Customer Service for assistance.

The supply and the coolant filled HV assembly should not be opened unless advised by
TDK-Lambda Americas personnel. The coolant filled HV tank has been cleaned and the
hermetically sealed at the factory, opening the supply or the assembly will void the facto­ry warranty, and may compromise performance.

3.3 CONTACTING TDK-LAMBDA AMERICAS CUSTOMER SERVICE

When contacting customer service locate the product description, part number and seri­al number from the label located on the rear of the unit, and have this information avail­able.

Phone: [phone] x 342 E-mail: [e-mail]
Fax: [phone]

Customer Service, or an approved Service Center, should be contacted if:

 The power supply is mechanically or electrically damaged.
 The power supply requires on-site calibration, or replacement warning decals.
 The customer has questions about a special application that is not described in this

manual.

Normally, the customer may NOT open any chassis covers that have a warranty seal.
Breaking a seal will void the warranty.

At the discretion of TDK-Lambda Americas, the customer may be granted permission to
break the warranty seal and open the chassis covers. Customer Service shall confirm
the permission by sending a replacement seal. Once the unit has been serviced, the
customer shall close the cover and apply the replacement seal adjacent to (not on top
of) the broken seal.

3.4 RETURNING DEFECTIVE UNITS

The procedure for returning defective products is given in section 3.3 of this manual.

83489011 Rev A