Kikusui PMC18-3A Operations Guide

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Part No. Z1-004-212, IA004181

Oct. 2007

OPERATION MANUAL

REGULATED DC POWER SUPPLY PMC-A SERIES

TYPE I

PMC 18-1A PMC 18-2A PMC 18-3A

TYPE II

PMC 18-5A PMC 35-3A PMC 70-1A PMC 110-0.6A

PMC 35-0.5A PMC 35-1A PMC 35-2A

PMC 160-0.4A PMC 250-0.25A PMC 350-0.2A PMC 500-0.1A

Use of Operation Manual

Please read through and understand this Operation Manual before operating the product. After reading, always keep the manual nearby so that you may refer to it as needed. When moving the product to another location, be sure to bring the manual as well. If you find any misplaced or missing pages in this manual, they will be replaced. If the manual gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/agent, and provide the “Kikusui Part No.” given on the cover. This manual has been prepared with the utmost care; however, if you have any questions, or note any errors or omissions, please contact Kikusui dis tributor/agent.

Reproduction and reprinting of this operation manual, in whole or in part, without written permission is prohibited. Both unit specifications and manual contents are subject to change without notice.

2 PMC-A

Power Requirements of this Product

✓

WARNING

Power requirements of this product have been changed and relevant sections of the Operation Manual should be revised accordingly. (Revision should be applied to items indicated by a check mark .)

Input voltage

The input voltage of this product is VAC ,

and the voltage range is to VAC. Use the product within this range only.

Input fuse

The rating of this product’s input fuse is to VAC ,

and .

• To avoid electrical shock, always disconnect

the power cord or turn off the switchboard before attempting to check or replace the fuse.

• Use a fuse element having a shape, rating, and

characteristics suitable for this product. The use of a fuse with a different rating or one that short circuits the fuse holder may result in fire, electric shock, or irreparable damage.

PMC-A 3

Power Requirements of this Product (Cont’d)

Power cord

The product is provided with power cords described below. If the cord has no power plug, attach a power plug or crimp-style terminals to the cord in accordance with the wire colors specified in the drawing.

WARNING

• The attachment of a power plug or crimp-style

terminals must be carried out by qualified personnel.



Without a power plug

Blue(NEUTRAL)

Blue(LIVE)

Green/Yellow(GND)

Plugs for USA (NEMA 5-15)

Provided by Kikusui distributor/agent

Kikusui agents can provide you with suitable AC power cord.

For further information, contact Kikusui distributor/agent.

Without a power plug

White(NEUTRAL)

Black(LIVE)

Green or Green/Yellow(GND)

Plugs for Europe (CEE 7/7)

4 PMC-A

Safety Symbols

For the safe use and safe maintenance of this product, the following symbols are used throughout this manual and on the product. Note the meaning of each of the symbols to ensure safe use of the product. (Not all symbols may be used.)

Indicates that a high voltage (over 1 000 V) is used here.

or

To uching the part causes a possibly fatal electric shock. If physical contact is required by your work, start work only after you make sure that no voltage is output here.

DANGER

WAR N ING

CAUTION

Indicates an imminently hazardous situation which, if ignored, will result in death or serious injury.

Indicates a potentially hazardous situation which, if ignored, could result in death or serious injury.

Indicates a potentially hazardous situation which, if ignored, may result in damage to the product and other property.

Shows that the act indicated is prohibited.

Indicates a general danger, warning, or caution.

When this symbol is marked on the product, see the relevant sections in this manual.

Protective conductor terminal.

Chassis (frame) terminal.

On (supply)

Off (supply)

In position of a bi-stable push control

Out position of a bi-stable push control

PMC-A 5

Safety Precautions

Line Voltage

The following safety precautions must be observed to avoid fire hazards, electric shock, accidents, and other failures. Keep them in mind and make sure to observe them. Using the product in a manner that is not specified in this manual may impair the protection functions provided by the product.

Users

n o i t

Manual

Purpose of use

Input power

Fuse

Cover

• This product must be used only by qualified personnel who understand the contents of this operation manual.

•If unqualified personnel is to use the product, be sure the product is handled under the supervision of qualified personnel (those who have electrical knowledge). This is to prevent the possibility of personal injury.

• Never use the product for purposes other than the product's intended use.

• This product is not designed or manufactured for general home or consumer use.

• Use the product within the rated input power voltage range.

• For applying power, use the power cord provided. For details, see the respective page in the operation manual.

• This product is designed as an equipment of IEC Overvoltage Category II (energy-consuming equipment supplied from the fixed installation).

•The fuse can be replaced with a new one. When replacing a fuse, use the one which has appropriate shape, ratings, and specifications. For details, refer to the specification section in this manual.

• Some parts inside the product may cause physical hazards. Do not remove the external cover.

• When the product is under the operation, the surface of top cover may get high temperature. It may cause burn on the skin.

6 PMC-A

Grounding

Check?

• This product is an IEC Safety Class I equipment (equipment

with a protective conductor terminal). To prevent the possibility of electric shock, be sure to connect the protective conductor terminal of the product to electrical ground (safety ground).

Installation

Relocation

Operation

Maintenance and inspection

• This product is designed for safe indoor use. Be sure to use it indoors.

• When installing this product, be sure to observe the description in 2.2 Precautions Concerning Installation Location in this manual.

•Turn off the POWER switch, and disconnect all cables before relocating the product.

• When relocating the product, be sure to include the manual.

•If a malfunction or abnormality is detected on the product, stop using it immediately, and remove the power plug from the outlet. Make sure the product is not used until it is completely repaired.

• Use cables or wires with sufficiently large current capacity for output wires and load cables.

• Do not disassemble or modify the product. If you need to modify the product, contact your Kikusui distributor/agent.

• To prevent the possibility of electric shock, make sure to unplug the power plug before carrying out maintenance or inspection. Do not remove the external cover during maintenance or inspection.

• Check that the insulation coating of the power cord is not broken and that the plug is not cracked or falling apart.

• If the panel needs cleaning, gently wipe u sing a soft cloth with water-diluted neutral detergent.

• To maintain the performance and safe operation of the product, it is recommended that periodic maintenance, inspection, cleaning, and calibration be performed.

Service

PMC-A 7

•Kikusui service engineers will perform internal service on the product. If the product needs adjustment or repairs, contact your Kikusui distributor/agent.

How to Read This Manual

Preface

Thank you for purchasing the PMC-A Series regulated DC power supply.

This manual is intended for first-time users of the PMC-A Series (hereafter abbreviated as: the PMC-A). It gives an overview of the PM operation, maintenance, safety precautions, etc.

Read this manual thoroughly to use the functions of the PMC-A effectively. You can also review this manual; when you are confused about an operation or when a problem occurs.

How to read this manual

This manual is designed to be read from beginning to end. We recommend that you read the manual thoroughly from the beginning before using the PMC-A for the first time.

Intended readers of this manual

This manual is intended for those using the PMC-A of regulated DC power supply and teaching other users on how to operate the PMC-A.

It assumes that the reader has knowledge of a regulated DC power

C-A and describes various settings,

8 PMC-A

Notations used in this manual

WARNING

CAUTION

DESCRIPTION

See

The following marks are used with the corresponding explanations in this manual.

Indicates an imminently hazardous situation which, if ignored, could result in death or serious injury.

Indicates a potentially hazardous situation which, if ignored, may result in damage to the product and other property.

Indicates information that you should know.

Explanation of terminology or operation principle.

Indicates reference to detailed information.

PMC-A 9

Contents

Safety Symbols - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5 Safety Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6 How to Read This Manual - - - - - - - - - - - - - - - - - - - - - - - - - - - -8 Contents - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -10 Function index - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -13 Front panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -14 Rear Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -16

Chapter 1 General Description

1.1 About This Manual - - - - - - - - - - - - - - - - - - - - - - - - - - - -17

1.2 Product Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - -17

1.3 Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -18

1.4 Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -19

Chapter 2 Installation and Preparation

2.1 Checking the Package Contents - - - - - - - - - - - - - - - - - -23

2.2 Precautions Concerning Installation Location - - - - - - - - -24

2.3 Precautions to Be Taken When Moving the Product - - - -26

2.4 Rack-mount Adaptor Installation - - - - - - - - - - - - - - - - - -26

2.5 Connecting the Power Cord - - - - - - - - - - - - - - - - - - - - -27

2.6 Ground (Earth) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -28

2.7 Turning On the Power - - - - - - - - - - - - - - - - - - - - - - - - -29 Inrush Current - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -30 Reverse Polarity - - - - - - - - - - - - - - - - - - - - - - - - - - - -30

Chapter 3 Connecting the Load

3.1 Load Considerations - - - - - - - - - - - - - - - - - - - - - - - - - -31

3.1.1 When the Load Current Has Peaks or is Pulse-shaped - - - - - - - - - - - - - - - - - - - - - - - - - -31

3.1.2 When the Load Generates a Reverse Current to the Power Supply - - - - - - - - - - - - - - - - - -32

3.1.3 When the Load Has Accumulated Energy Such As Batteries -- - - - - - - - - - - - - - - - - - -32

3.2 Connecting the Load - - - - - - - - - - - - - - - - - - - - - - - - - -33

3.2.1 Load Cable - - - - - - - - - - - - - - - - - - - - - - - - - - - - -34

Current capacity of the load cable - - - - - - - - - - - - - - - -34 Dependence of allowable cable current on

10 PMC-A

Contents

the maximum allowable insulator temperature - - - - -34 Taking measures against noise - - - - - - - - - - - - - - - - - -35 Voltage rating of the load cable - - - - - - - - - - - - - - - - - -35

3.2.2 Connecting to the Output Terminal - - - - - - - - - - - - -35

Chapter 4 Basic Operation

4.1 Constant Voltage (CV) and Constant Current (CC) Power Supplies - - - - - - - - - - - - - - - - - - - - 37

Crossover point - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39 Example of CV/CC mode operation - - - - - - - - - - - - - - -39

4.2 Using the Power Supply as a Constant Voltage Power Supply -- - - - - - - - - - - - - - - - - - - - - - - - - 40

Output Setup Procedure - - - - - - - - - - - - - - - - - - - - - - -40

4.3 Using the Power Supply as a Constant Current Power Supply - - - - - - - - - - - - - - - - - - - - - - - - - 40

Output Setup Procedure - - - - - - - - - - - - - - - - - - - - - - -40

4.4 Protection Function - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

4.4.1 Overvoltage Protection (OVP) Function - - - - - - - - -41 Setup procedure of the OVP trip point - - - - - - - - - - - - -41 Clearing alarms - - - - - - - - - - - - - - - - - - - - - - - - - - - - -42

4.4.2 Overheat Protection (OHP) Function - - - - - - - - - - -42

4.4.3 Other Protection Functions - - - - - - - - - - - - - - - - - -42

4.5 Remote Sensing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43 Handling of SENSING terminals - - - - - - - - - - - - - - - - -43 Connection and setup procedure - - - - - - - - - - - - - - - -44

4.6 Master-Slave Parallel Operation - - - - - - - - - - - - - - - - - - 45 Handling of J1 Terminal - - - - - - - - - - - - - - - - - - - - - - -45

4.6.1 Functions during Master-Slave Parallel Operation - -46 Connection and setup procedure - - - - - - - - - - - - - - - -47 Starting and ending parallel operation - - - - - - - - - - - - -48

4.7 Series Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51 Maximum number of power supplies

connected in series - - - - - - - - - - - - - - - - - - - - - - - -52

4.7.1 Functions during Series operation - - - - - - - - - - - - -52 Connection and setup procedure - - - - - - - - - - - - - - - -53 Starting and ending series operation - - - - - - - - - - - - - -53

Chapter 5 External Control

5.1 External Remote Control - - - - - - - - - - - - - - - - - - - - - - - 55 J2 connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -56

PMC-A 11

Contents

5.1.1 Remote Control Connection and Setup - - - - - - - - - -59 Controlling the output voltage using external voltage - - -60 Controlling the output voltage using external resistance -61 Controlling the output current using external voltage - - -61 Controlling the output current using external resistance -62 Output on/off control - - - - - - - - - - - - - - - - - - - - - - - - - -63

5.2 Remote Monitoring - - - - - - - - - - - - - - - - - - - - - - - - - - - -63

5.2.1 External Monitoring of the Output Voltage

and Output Current. - - - - - - - - - - - - - - - - - - - - - - -63

5.2.2 External monitoring of the operating status - - - - - - -64

Chapter 6 Maintenance

6.1 Replacing the Fuse - - - - - - - - - - - - - - - - - - - - - - - - - - -66

6.2 Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -67 Test equipment required for calibration - - - - - - - - - - - -67 Environment - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -67 Calibration Procedure - - - - - - - - - - - - - - - - - - - - - - - - -67 Voltage system calibration procedure - - - - - - - - - - - - -68 Current system calibration procedure - - - - - - - - - - - - - -71

Chapter 7 Specifications

7.1 Specifications (Type I) - - - - - - - - - - - - - - - - - - - - - - - - -75

7.2 Specifications (Type II) - - - - - - - - - - - - - - - - - - - - - - - - -80

7.3 Dimension Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - -85

12 PMC-A

Function index

See

Preparation

Usage scenarios Manual sections

Confirming accessories 2 Installation and

Rated input values - quantities 2.5 Connecting the Power

What may be used with power supply connected to load

Precautions for connecting to remote sensing lines

Necessary preparations for rack mounting 1.4 Options

Preparation

Cord 7 Specifications

3.2 Connecting the Load

4.5 Remote Sensing

2.4 Rack-mount Adaptor Installation 7 Specifications

Use

page

27 74

19 26 74

Usage scenarios Manual sections

Learning protection details 4.4 Protection Function 41

Learning available function 1.3 Features 18

Clearing alarm conditions immediately. 4.4 Protection Function 41

PMC-A 13

page

Front panel

POWER

C.V

C.C

ALM

OUTPUT LIMIT

CURRENT

O.V.P

VOLTAGE

GND

REMOTE SENSING

OFF ON

OFF

REGULATED DC POWER SUPPLY

OUTPUT

㧖

275*275*

Press this indicated area toQRGPVJGEQXGT

No.

1 POWER switch

2 OUTPUT switch

Name Description

Depressed position is ON

Depressed position is ON. When this switch is turned OFF, the OUTPUT of the power

3 OUTPUT LED

4 LIMIT switch

Voltmeter Displays the voltage.

6 Ammeter

7 C.V indicator

14 PMC-A

supply is at high impedance (several k

Lights when the output is ON.

The voltage and current settings are displayed while this switch is held down. This switch only displays the current setting. It is not a memory function.

Displays the current.

Lights when operating in constant voltage (CV) mode. (Green LED)

Ω).

See

page

−

−

−

No.

See

8 C.C indicator

9 VOLTAGE knob

10 CURRENT knob

11 OUTPUT terminal

12 GND terminal

SENSING terminal *1 Remote sensing terminal. 43

SENSING switch *1 Enables remote sensing. Turn off the switch

15 OVP variable resistor

ALM indicator Lights when the overvoltage or overheat

S1 to S4 switches Used for analog remote control.

S5 switch Used for master-slave parallel control.

Variable resistor for cali-

bration

19 Front sub-panel cover

Name Description

Lights when operating in constant current (CC) mode. (Red LED)

Sets the output voltage. (10 turns)

Sets the output current. (10 turns)

Red : + (positive) terminal White : - (negative) terminal Connect either output terminal to the GND terminal using the short bar unless your application requires the power supply output to be floating. Since Type II models use a relay switch system, a relay switch noise may appear at the rising edge of the output when the input voltage is low or depending on the load condition.

Connected to the chassis of the power sup- ply.

when you are not using remote sensing.

Sets the OVP (Overvoltage Protection) trip point.

protection circuit strips entering an alarm status.

Used to calibrate the output voltage and the meter.

To open the cover, press the part indicated as PUSH. You can remove the cover by pull ing the opened cover. Even if the claw (indi-

cated with ) breaks, the cover can be attached without problem.

㧖

page

−

*1 Not available on models with rated output of 70 V or higher.

PMC-A 15

Rear Panel

KIKUSUI

ELECTRONICS

CORP.

WARNING

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME TYPE AND RATING FUSE.

CAUTION

TO AVOID ELECTRIC SHOCK, THE AC POWER CABLE PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND. DO NOT REMOVE COVERS, REFER SERVICING TO QUALIFIED PERSONNEL.

INPUT

AC100V 50 60Hz MAX280VA

MADE IN CHINA

FUSE

AC250V

4A (S.B

)

No.

Name Description

See

page

J1 connector Input/output terminals for master slave par-

J2 connector Terminals for analog remote control and

Fuse holder Contains an AC input fuse (S.B type) 66

INPUT connector Power cord connector for supplying power

allel operation.

monitoring function.

to the power supply.

Protective conductor terminal. Always ground the power supply.

43 45

16 PMC-A

General Description

This chapter gives an overview and introduces the features of the PMC-A Series.

1.1 About This Manual

The PMC-A series come in two types depending on the size of case. This operation manual describes the following models.

■ Type I

PMC18-1A, PMC18-2A, PMC18-3A, PMC35-0.5A,

PMC35-1A, PMC35-2A

■ Type II

PMC18-5A, PMC35-3A, PMC70-1A, PMC110-0.6A,

PMC160-0.4A, PMC250-0.25A, PMC350-0.2A,

PMC500-0.1A

1.2 Product Overview

The PMC-A Series are compact, high-performance, constant voltage, constant current Series regulated DC power supplies. The adoption of Series regulated design realizes a highly stable output with a low level of output noise. In addition, with an optional power supply controller, it allows to operate via GPIB systems which offers wide application in the field of R&D, Manufacturing, Testing, etc.

PMC-A 17

1.3 Features

● Digital display on both voltage and current at the same

time.

The PMC-A series power supply has two bright LED meters that display the output voltage, output current, and their set tings.

● High-resolution setting for output voltage and current.

The variable resistors for the output voltage and current set- tings are 10-turn wire wound type, allowing high-resolution settings.

● Output ON/OFF by external contact

The output ON/OFF switch is an electronic switch that emits no chattering or noise. The switch can also be controlled remotely.

● External Remote Control

The output voltage and current can be controlled remotely using an external analog signal (voltage or resistance). By connecting a power supply controller such as KIKUSUI's PIA3200 or PIA4810 via the GPIB interface, the PMC-A series power supply can be integrated into a system such as an automated test system.

● External monitor function

The monitor output enables to monitor the status output, out- put voltage, and output current from outside of the PMC-A.

● Remote sensing function

The remote sensing function stabilizes the output voltage across the load. (equipped with 18 V, 35 V models)

● Equipped with overvoltage protection (OVP) function

as standard.

• To control the PMC-A series power supply using KIKUSUI's PIA3200 (via the GPIB interface), the ROM version of the PIA3200 must be 1.03 or later. If not, the

18 PMC-A

ROM needs to be upgraded. To have the ROM upgraded, contact your Kikusui agent or distributor.

• On Type II models, the internal loss is decreased by changing the input voltage of the series regulator. The input voltage is changed by switching secondary taps of the internal transformer using relays. The relay has three switch points and changes depending on the input volt age. If the input voltage fluctuates when the output volt- age of power supply is used near a relay switch point, you may hear the sound of the relay switching. This is not a

malfunction.　When the relay is switched, a spike volt age at the output voltage may be generated.

1.4 Options

The following options are available for the PMC-A series.

For details, contact your Kikusui agent or distributor.

■ Guard cap (GP01-PMC)

Exchanged with the knob to prevent inadvertent operation of voltage or current setting.

General Description

■ Output terminal cover (OTC01-PMC)

Covers the output terminal to prevent unex- pected accidents. Applies to models with a rated output of 70 V or greater.

It is recommended that you use the output ter- minal cover for your safety.

PMC-A 19

■ Handle (CH01-PMC)

A convenient handle for carrying the power supply.

Applies to all type II models.

■ Rack mount options

The following options are available for rack mount system.

Name Model Note

Rack adapter

Blank panel

KRA3 inch rack (EIA standard)

KRA150 Milli rack (JIS standard)

KBP3-2

KBP3-4

BP191(-M)

BP1H(-M)

(EIA, JIS common) - 1/2 width)

(EIA, JIS common) - 1/4 width)

inch rack (EIA standard)

Milli rack (JIS standard)

*1. the model added with “-M” is “mesh” type.

CAUTION

• The PMC-A power supply uses unforced air cooling.

In order to keep a space for cooling intake, at least one layer of “blank panel” must be installed w hen the PMC-A is rack mounted.

JIS standard：50 mm、EIA standard：44.45 mm

For details, contact your Kikusui agent or distributor.

20 PMC-A

132.5

37.75

460

482

260

Blank panel KBP3-4

Blank panel KBP3-2

149

100

460

480

260

24.5

Rack adapter KRA3

Inch rack EIA standard unit: mm

Milli rack JIS standard unit: mm

Blank panel KBP3-4

Blank panel KBP3-2

Rack adapter KRA150

General Description

Fig. 1-1 Example of installation for rack mount

options

PMC-A 21

KRA150

KBP3-4

BP1H

KBP3-2

Fig. 1-2 Rack mounting example

22 PMC-A

Installation and Preparation

Operation Manual (1pc.)

[Z1-004-212]

Power cord (1pc.)

Fuse (1pc.)

Fuse rating varies depending on the model. For details, see Chapter 7, “Specifications.”

[84-49-0100]

Analog remote control plug (1pc.)

*Attached to the J2 connector on the rear panel.

[84-49-0110]

[83-06-5060]

Analog remote control contact (20pcs.)

[85-AA-0004]

[85-AA-0005]

The power cord that is provided varies depending on the destination at the factory shipment.

Lock Lever for J2 connector (1pc.)

*Attached to the J2 connector on the rear panel.

This chapter explains how to prepare the PMC-A for use from unpacking to installation.

2.1 Checking the Package Contents

When you receive the PMC-A, check that all accessories are included and that the accessories have not been damaged dur ing transportation.

If any of the accessories are damaged or missing, contact your Kikusui agent or distributor.

We recommend that all packing materials be saved, in case the PMC-A needs to be transported at a later date.

PMC-A 23

Fig. 2-1 Accessories

2.2 Precautions Concerning Installation Location

Be sure to observe the following precautions when installing the

PMC-A.

● Do not use the product in a flammable atmosphere.

To prevent the possibility of explosion or fire, do not use the product near alcohol, thinner or other combustible materials, or in an atmosphere containing such vapors.

● Avoid locations where the product is exposed to high

temperature or direct sunlight.

Do not place the product near a heater or in areas subject to drastic temperature changes.

Operating temperature range: 0 °C to +40 °C

Storage temperature range: -10 °C to +60 °C

● Avoid humid environments.

Do not place the product in high-humidity locations-near a boiler, humidifier, or water supply.

Operating humidity range: 10 %rh to 80 %rh (no condensation)

Storage humidity range: less than 70 % rh (no condensation)

Condensation may occur even within the operating relative humidity range. In such cases, do not use the product until the condensation dries up completely.

● Be sure to use it indoors.

The PMP is designed for safe indoor use.

● Do not place the product in a corrosive atmosphere.

Do not install the product in a corrosive atmosphere or in environments containing sulfuric acid mist, etc. This may cause corrosion of various conductors and bad contacts of connectors leading to malfunction and failure, or in the worst case, a fire.

24 PMC-A

However, operation in such environments may be possible through alteration. If you wish to use the product in such environments, consult your Kikusui agent or distributor.

● Do not place the product in a dusty location.

Accumulation of dust can lead to electric shock or fire.

● Do not use the product where ventilation is poor.

The power supply uses unforced air cooling. The air flows form the bottom panel to the top panel. Do not block the bot tom and top panels.

The top cover of the product may get high temperature, it may cause burn on the skin.

Do not install the power supply with the side or front panel facing up or down.

● Do not place objects on top of the product.

Placing heavy objects on the product may cause malfunction of the power supply.

Do not stack the power supplies.

● Do not place the product on an inclined surface or loca-

tion subject to vibrations.

The product may fall or tip over causing damages and inju- ries.

● Do not use the product in a location where strong mag-

netic or electric fields are nearby or a location where large amount of distortion and noise is present on the input power supply waveform.

The product may malfunction and cause electric shock or fire.

Installation and Preparation

● Do not use the product near highly sensitive measuring

instruments or transceivers.

The noise generated by the product may affect them.

PMC-A 25

2.3 Precautions to Be Taken When Moving

See

the Product

When moving the product to the installation location or when transporting the product, note the following points.

● Turn off the POWER switch.

Moving the product while the power is turned on can cause electric shock or damage to it.

● Remove all wiring.

Moving the product with the cables connected can cause wires to break or injuries due to the product falling over.

● When transporting the product, be sure to use the orig-

inal packing materials.

Otherwise, damage may result from vibrations or from the product falling during transportation.

● Make sure this manual has been included.

2.4 Rack-mount Adaptor Installation

p.19

26 PMC-A

Before installing the rack-mount adaptor, remove the plastic feet. How to remove plastic feet is illustrated in

Concerning installation, refer to the KRA3 or the KRA150 installation instructions.

Fig. 2-2.

plastic feet

push screw

Fig. 2-2 Removing plastic feet

In case the PMC-A is detached from the rack adaptor, we rec- ommend that you keep all the parts.

When you attach the plastic feet again, use the parts which were removed.

*plastic feet can be removed by loosening the push screw.

2.5 Connecting the Power Cord

The PMC-A is designed as an equipment of IEC Overvoltage Category II (energy-consuming equipment supplied from the fixed installation).

• To connect to the AC line, use the attached power cord.

• The power cord with a plug can be used to disconnect the PMC-A from the AC line in an emergency. Connect the power plug to an easily accessible power outlet so that the plug can be removed from the outlet at any time. Be sure to allow enough space around the power outlet.

• Do not use the attached power cord as the power cord for other equipment.

Installation and Preparation

Check that the AC line to be connected is compatible with the product's rated input value.

PMC-A 27

The product's nominal input rating is shown on the rear panel.

KIKUSUI

ELECTRONICS

CORP.

WARNING

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME TYPE AND RATING FUSE.

CAUTION

TO AVOID ELECTRIC SHOCK, THE AC POWER CABLE PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND. DO NOT REMOVE COVERS, REFER SERVICING TO QUALIFIED PERSONNEL.

INPUT

AC100V 50 60Hz MAX2 80VA

MADE IN CHINA

FUSE

AC250V 4A (S.B

)

INPUT

AC100V 50/60Hz

MAX

280

When it is filled in, as in

Fig. 2-3, the line voltage will be 100 V. Input can be within +/– 10% of the nominal input voltage shown. The frequency can be 50 Hz or 60 Hz.

Turn off the POWER switch.

Connect the power cord to the AC inlet (AC INPUT) on the rear panel.

Insert the power plug to an outlet.

Fig . 2- 3 Confirmation of nominal input rating

2.6 Ground (Earth)

WARNING

28 PMC-A

• Possible electric shock. The PMC-A is an IEC Safety Class I equipment (equipment with a pro- tective conductor terminal). Be sure to ground the product to prevent electric shock.

Be sure to ground the unit for your safety.

Securely connect the protective conductor (earth) terminal on the rear panel.

Fig. 2-4 Confirmation of ground (protective con-

KIKUSUI

ELECTRONICS

CORP.

WARNING

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME TYPE AND RATING FUSE.

CAUTION

TO AVOID ELECTRIC SHOCK, THE AC POWER CABLE PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND. DO NOT REMOVE COVERS, REFER SERVICING TO QUALIFIED PERSONNEL.

INPUT

AC100V 50 60Hz MA X 280 VA

MADE IN CHINA

FUSE

AC250V 4 A ( S.B

)

Protective conductor terminal

ductor terminal)

2.7 Turning On the Power

Before turning on the POWER switch, be sure to observe the status of OUTPUT switch. It is on when the switch is pressed position, and it is off when the switch is depressed position.

Installation and Preparation

CAUTION

• If the POWER switch is turned on while the OUTPUT

switch remains on, a preset voltage or current is supplied to the load.

Check that the OUTPUT switch is turned off.

Open the sub-panel cover of the front panel to con- firm that all levers of control switch (S1 to S5) are

lower position ( ○ ).

PMC-A 29

Check that the Remote sensing switch on the front panel is turned off.

Turn on the POWER switch.

The LED on the control panel lights up.

While pressing the LIMIT switch, and turn the VOLT- AGE control knob; check that the output voltage can

be preset in a range from zero to the rated output voltage value.

While pressing the LIMIT switch, and turn the CUR- RENT control knob; check that the output current can be preset in a range from zero to the rated output current value.

Now, the PMC-A is ready for use.

Inrush Current

When the power switch is turned on, the maximum inrush cur- rent of 30 A for type I and 80 A for type II may flow. In partic- ular, with a system using multiple units of the PMC-A, when the power switch is turned on at the same time, make sure that there is enough of a margin, taking into consideration the capacity of the power distributor panel or the AC power line.

Reverse Polarity

When the current or voltage is set up as zero with the OUTPUT switched off, a 0 V-0.6 V reverse polarity voltage can arise Because of this voltage, an opposite-directed 1 mA current flows to the load. Note that this load can reduce the life time of the product.

30 PMC-A

Connecting the Load

Preset constant current value

Ammeter reading (mean value)

This chapter describes the consideration to be given to the load, explains how to connect the load wires, and explains how to connect to the output terminal.

3.1 Load Considerations

Note that the output will become unstable if the following types of loads are connected.

• When the load current has peaks or is pulse-shaped

• When the load generates a reverse current to the power

supply

• When the load has accumulated energy such as batteries

3.1.1 When the Load Current Has Peaks or is Pulse- shaped

The current meter on the PMC-A indicates only mean values. Even when the indicated value is less than the preset current value, the peak values may actually exceed the preset current value. In such cases, the PMC-A is instantaneously put into constant-current operation mode, and the output voltage drops accordingly.

For these types of loads, you must increase the preset current value or increase the current capacity.

PMC-A 31

Preset constant current value Ammeter reading (mean value)

Fig. 3-1 Load current with

peaks

Fig. 3-2 Pulse shaped

load current

3.1.2 When the Load Generates a Reverse Current

Equivalent circuit

Regenerative load

Load

−

Reverse current

Output current

waveforms

-I

RD[Ω] ≤

[V]

[A]

RD: “Dummy road” that bypasses reverse current E

: Output voltages

: Maximum value of reverse current

to the Power Supply

The PMC-A cannot absorb reverse current from the load. Therefore, if a regenerative load (such as an inverter, converter, or transformer) is connected, the output voltage increases and becomes unstable.

For these types of loads, connect a resistor RD as shown in Fig. 3-3 "Remedy for regenerative load" to bypass the reverse cur- rent. However, the amount of current to the load decreases by Irp.

Fig. 3-3 Remedy for regenerative load

3.1.3 When the Load Has Accumulated Energy

32 PMC-A

CAUTION

• For resistor RD, select an appropriate resistor rated for the power (allowing sufficient margin).

• If a resistor with insufficient rated power for the cir- cuit is used, RD may burn out.

Such As Batteries

When connecting to a load that has stored energy such as a bat- tery, a large current flows from the load to the product's internal capacitor through a protection diode in an internal output con

trol circuit, and depending on the situation, the product may

burn out or the load's working life may be reduced.

For any such load, connect a reverse current protection diode D

RP in series between the PMC-A and the load, as shown in

Fig. 3-4 "Remedy against load with accumulated energy".

CAUTION

PMC-A

DRP

Load with accumulated ener

DRP: Diode that avoids

reverse current

Fig. 3-4 Remedy against load with accumulated

energy

• To protect the load and the PMC-A, select DRP

according to the following criteria.

Reverse voltage withstand capacity: At least twice the rated output voltage of the power supply.

Forward current capacity: Three to ten times the rated output current of the power supply.

A diode with small loss.

•Be sure to take into account the heat generated by D

RP. DRP may burn out if heat dissipation is inade-

quate.

Connecting the Load

3.2 Connecting the Load

This section describes the wire used to connect the PMC-A to the load, and the connection to the output terminal.

CAUTION

PMC-A 33

• Before connecting to the load, confirm that the POWER switch is turned on, and that the OUTPUT is turned off.

3.2.1 Load Cable

WARNING

• To prevent the possibility of fire, use a load cable with sufficient current capacity with respect to the rated output current of the PMC- A.

• To prevent the possibility of electric shock, use a load cable with a higher voltage rating than the isolation voltage of the PMC-A. For the isolation voltage, see chapter 7, “Specifi- cations”.

Current capacity of the load cable

Load cables must be rated to carry the maximum rated output current of the mum rated output current, the cable will remain intact even if the load is short-circuited.

Ta ble 3-1 Nominal cross-sectional area of cables

Nominal cross

sectional area

[mm

]

0.9 18 (0.82) 17 4

1.25 16 (1.31) 19 6

2 14 (2.08) 27 10

3.5 12 (3.31) 37 -

5.5 10 (5.26) 49 20

*1. Excerpts from Japanese laws related to electrical equipment

PMC-A. If their current rating exceeds the maxi-

and allowable currents

AWG

(Reference cross

sectional area)

[mm

]

Allowable cur-

rent *1 [A]

(Ta = 30 °C)

Current recom-

mended by

Kikusui [A]

When there is a long distance to the load, use as thick a line as possible, more than recommended.

Dependence of allowable cable current on the maxi- mum allowable insulator temperature

The temperature of a cable is determined by the resistance loss due to the flowing current, ambient temperature and the thermal

34 PMC-A

resistance with respect to the outside of the cable. The allow- able current in Table 3.1 "Load Considerations" show the cur- rent capacities that can be flowed through a heat-resistant PVC wire (single wire) with a maximum allowable temperature of 60

°C when the wire is stretched horizontally under an ambient temperature of 30 when the heat resistant temperature of the PVC wire is lower, the ambient temperature is higher than 30 tion is degraded due to the use of bundled wires.

°C. The current capacity should be lower

°C or the heat radia-

Taking measures against noise

It is better to make heat radiation as great as possible to allow a larger current to flow, when wires having the same heat-resis tant temperature are installed. For measures against noise in the load cables, however, installing the + (pos.) and – (neg.) output lines side by side or bundling them together is more effective against unwanted noise. The Kikusui-recommended currents shown in allowable currents" are allowable current that have been reduced in consideration of the potential bundling of load cables. Use these values as a guideline when installing load wires.

Table 3-1 "Nominal cross-sectional area of cables and

Voltage rating of the load cable

Connecting the Load

Use a load cable with a higher voltage rating than the isolation voltage of the PMC-A. For the isolation voltage of each model, see

Chapter 7 "Specifications".

3.2.2 Connecting to the Output Terminal

WARNING

PMC-A 35

• To prevent the possibility of electric shock, be

sure to turn off the POWER switch.

Turn off the POWER switch.

Connect the load cable to the output terminal.

To secure the firm connection, use the crimping terminal for the

Knob

size

Approx.12mm

Knob

Wiresize upto2 mm

When using the crimping terminal

When using the wire by stripping the cover

load cable to the output terminal.

Check the connection.

Fig. 3-5 Connecting to the output terminal

36 PMC-A

Basic Operation

ImaxIs

V s

V max

Output current Iout

Ou tpu t voltages Vo u t

Crossover point

A = CV mode range B = CC mode range

Vs = voltage setup value Is = current setup value Rc = Vs/Is (Ohmmeter) R

= load resistance Vmax= settable maximum voltage I max= settable maximum current

=Rc

>Rc

RL<Rc

This chapter describes basic features and operations of the PMC-A such as remote sensing, master-slave parallel opera- tion, series operation.

4.1 Constant Voltage (CV) and Constant Current (CC) Power Supplies

The product has functions for constant voltage power supply to maintain a fixed/regularized output voltage, and for constant current power supply that maintain a fixed output current, even as the load changes. The state of operation for constant voltage supply is called “CV mode”, and for constant current supply, “CC mode”. These operating modes are determined by the fol lowing three values.

• Output voltage setup value (VS)

• Output current setup value (IS)

• Load resistance value (RL)

These operations are detailed in the following.

PMC-A 37

Fig. 4-1 Constant voltage operation and constant cur-

rent operation

Fig. 4-1 illustrates the operating modes for the PMC-A. RL

stands for the load resistance value, and RC stands for the resis- tance value calculated from the current and the voltage setup value (R operating in CV mode when the operating point is in the range, and in CC mode when the operating point is in the

C = VS/IS). The regulated power supply is designed as

range. The straight line (RL = RC) is a line between CV mode and CC mode. This line shows loads for which the output volt

- age and the setup voltage are equalized, or which the output current and the setup current are equalized. If load resistance R

L is greater than load resistance RC, the power supply operates

in CV mode because the operating point is within the

range. At this time, the current setup value IS becomes the current limit value.

When operating in CV mode, the output voltage is maintained at the voltage setup value. The output current is determined by the relation I=V

S/RL, and is reduced to a value below the cur-

rent limit value IS. Note that the current of the setup value does not flow at this time.

For the loads to allow transient peak current flow, the current limit value must be set so that the peak current does not reach the limit value.

Conversely, if load resistance RC is greater than load resistance R

L, the power supply operates in CC mode because the operat-

ing point is within the range. At this time, the voltage setup value IS becomes the voltage limit value.

When operating in CC mode, the output current is maintained at an established current value. The output voltage is deter

- mined by the relation V=IS × RL, and is reduced to a value below the current limit value V

S. Note that the voltage of the

setup value is not applied at this time.

For the loads in which transitory surge voltage arises, the volt- age limit value must be set so that the surge voltage does not reach the voltage limit value.

38 PMC-A

Crossover point

The unit switches between CV mode and CC mode automati- cally depending on the load. The points where the transition occurs are called crossover points.

For example, in CV mode, when the load changes and the out- put current reaches the current limit value, there is an automatic transition to CC mode in order to protect the load CC mode, when the output voltage reaches the voltage limit value, there is an automatic transition to CV mode.

. Similarly, in

Example of CV/CC mode operation

The following describes an example of model PMC35-1A. (rated output voltage 35 V and rated output current 1 A).

Connect an 60 Ω load resistance (RL) to the power supply’s output terminal and set the output voltage to 20 V and the out put current to 0.5 A. In this case, because Rc=20 V/ 0.5 A = 40 Ω, and 60 Ω > 40 Ω (RL > Rc), CV mode is activated. When the voltage rises while still in CV mode, because Vs= 0.5 A × 60 = 30 V (Vs=IS × RL), the voltage can go up to 30 V. When the voltage goes higher than this value, the crossover point is reached, and there is an automatic transition to CC mode. To maintain CV mode at rate exceeding 30 V, raise the output cur rent setting value (0.5 A).

Next, connect a 25 Ω load resistor (RL) to the power supply’s output terminal, and establish a 20 V output voltage and a 0.5 A output current 20V/ 0.5 A = 40 Ω and 25 rent rises while still in CC mode, it is possible that the current value will rise to a level higher than I 25 Ω = 0.8 A crossover point, and there is an automatic transition to CV mode. To maintain CC mode at rate exceeding 0.8 A, raise the output voltage setting value (20V).

. In this case, CC mode is activated because RC=

Ω < 40 Ω (RL< RC). When the cur-

S = VS / RL up to IS = 20V/

. When the current goes higher, it reaches the

Basic Operation

PMC-A 39

4.2 Using the Power Supply as a Constant Volt ag e Powe r Su p ply

Output Setup Procedure

Check that the OUTPUT switch is off and turn on the POWER switch.

While holding down the LIMIT switch, set the appro- priate current for the load using the CURRENT knob.

The value entered here becomes the current limit.

While holding down the LIMIT switch, set the required voltage using the VOLTAGE knob.

Turn on the OUTPUT switch.

C.V lights indicating that the power supply is in constant voltage operation.

• If the output current exceeds the current limit that was

specified in step 2 due to load fluctuations when the power supply is operating in constant voltage mode, the power supply switches to constant current mode. When the power supply switches to constant current mode, C.C lights up.

4.3 Using the Power Supply as a Constant Current Power Supply

Output Setup Procedure

Check that the OUTPUT switch is off and turn on the POWER switch.

While holding down the LIMIT switch, set the allow- able voltage using the VOLTAGE knob.

The value entered here becomes the voltage limit.

40 PMC-A

CAUTION

While holding down the LIMIT switch, set the required current using the CURRENT knob.

Turn on the OUTPUT switch.

If the load is connected, C.C lights indicating that the power sup- ply is in the constant current operation.

• If the output voltage exceeds the voltage limit that was

specified in step 2 due to load fluctuations when the power supply is operating in constant current mode, the power supply switches to constant voltage mode. When the power supply switches to constant voltage mode, C.V lights up.

4.4 Protection Function

The PMC-A is equipped with the following protection function.

4.4.1 Overvoltage Protection (OVP) Function

The overvoltage protection (OVP) function protects the load from unexpected and excessive voltage. When overvoltage pro tection (OVP) is activated, the alarm (ALM) LED blinks, and the OUTPUT is turned off.

The overvoltage protection (OVP) can be set at the range between approximately 5 % to 105 % of the rated output volt age.

Basic Operation

Setup procedure of the OVP trip point

• To set the OVP trip point, an overvoltage must actu- ally be output. If a load is connected to the output terminal, remove it.

Using a flat-blade screwdriver, turn the O.V.P vari- able resistor clockwise all the way.

PMC-A 41

Check that the OUTPUT switch is off and turn on t h e POWER switch.

Output the voltage that you wish to specify as overvoltage.

Turn the O.V.P variable resistor gradually counter- clockwise and stop turning when OVP tri p s (ALM lights).

Lower the output setting and clear the alarm.

Clearing alarms

Turn off the OUTPUT switch. Then, turn off the POWER switch and back on again. In this case, if you do not decrease the preset output voltage, OVP trips again when the OUTPUT switch is turn on.

4.4.2 Overheat Protection (OHP) Function

The overheat protection (OHP) is activated when the built-in heat sink equipped with the °C. When tripped to the status of OHP, the ALM LED lights and the output is turned off.

PMC-A reaches approximately 110

4.4.3 Other Protection Functions

■ Temperature fuse

The temperature fuse is built into the wire-wound section of the power transformer. When this fuse is blown out, the input power is shut down and the output is turned off. It is suspected that the product may have malfunctioned, contact your Kikusui distributor or agent.

42 PMC-A

■ Input fuse

Wires can be used

・Solid wire: φ0.4 to φ1.0

(AWG26 to 18)

・Twisted wire:

0.3 mm to 0.75 mm (AWG22 to 20)

・Element wire diameter:

φ0.18 or greater

・Standard length or stripped wire:

10 mm

A fuse for AC input. If the fuse is blown out, the input power is shut down and the output is turned off. When replacing the fuse, see

page 66, 6.1 Replacing the Fuse.

4.5 Remote Sensing

The remote sensing function is used to reduce the influence of voltage drops due to the load cable resistance and stabilize the output voltage across the load. The remote sensing function of this power supply can compensate up to approximately 0.6 V for a single line.

To perform remote sensing, an electrolytic capacitor of several- hundred

μF is required at the sensing point (load terminal).

・The remote sensing function is not available on models

with rated output of 70 V or higher.

・When the remote sensing function is not performed,

make sure that the setting is in off position.

Handling of SENSING terminals

Strip the wire insulation and insert the wire into the hole while holding down part A of the terminal using a flat-blade screw driver or other similar means. See Fig. 4-2.

Fig. 4-2 Connection to SENSING terminals

PMC-A 43

Basic Operation

・After inserting the wire, check that it does not come

CAUTION

REMOTE SENSING

OFF ON -S +S

Load

Load cables

To OUTPUT terminals

Twist



-S

CAUTION

loose.

・Be sure the exposed section of the wire does not

touch the chassis or other wires such as the wire of the adjacent terminal.

Connection and setup procedure

Turn off the POWER switch and OUTPUT switch.

Connect the cables as shown in Fig. 4-3

For the handling of the SENSING terminal, see section Fig. 4-2

Turn on the REMOTE SENSING switch.

44 PMC-A

WARNING

Fig. 4-3 Connection of the sensing cable

・ For sensing cables, use cables with a higher

voltage rating than the isolation voltage of the power supply.

・Burnout may occur in the load. If the sensing wires

come loose, the output voltage across the load cannot be stabilized and may cause excessive voltage to be applied to the load. Securely connect the sensing wires such as by using crimp terminals.

4.6 Master-Slave Parallel Operation

CAUTION

Wires can be used

・Solid wire: φ0.4 to φ1.0

(AWG26 to 18)

・Twisted wire:

0.3 mm to 0.75 mm (AWG22 to 20)

・Element wire diameter:

φ0.18 or greater

・Standard length or stripped wire:

10 mm

Up to three slave power supplies can be connected in parallel with a master power supply to increase the current capacity. In master-slave parallel operation, the total output of the power supplies connected in parallel can be controlled using only the master power supply.

・

Connecting power supplies with different rated out- puts can cause a malfunction. Only PMC-A series power supplies with the same rated output voltage and rated output current can be connected in paral lel.

・ Parallel operation by simply connecting the output of

each power supply is also possible. However, in this case, the output of the power supplies connected in parallel must be set the same. It is recommended that masterslave parallel operation, which allows power supplies connected in parallel to be controlled as a single power supply, be used.

Handling of J1 Terminal

Strip the wire insulation and insert the wire into the hole while holding down part A of the terminal using a flat-blade screw driver or other similar means. See Fig. 4-4.

Fig. 4-4 Connection to J1 terminal

PMC-A 45

Basic Operation

4.6.1 Functions during Master-Slave Parallel Opera-

CAUTION

tion

The functions of the PMC-A during master-slave parallel oper- ation are as follows.

■ Voltmeter and Ammeter

For the total output current, sum the currents of the master and slave units.

■ Remote Sensing

Available only on the master unit.

■ External Control

Available only on the master unit.

■ External Monitoring

• External monitoring of output voltage (V MON)

Can be monitored on the master unit.

• External monitoring of output current (I MON)

The output current of each master and slave units can be monitored. For the total output current, sum the monitor val ues of the master and slave units.

• Status monitors

The status of the constant voltage operation (CV STATUS), constant current operation (CC STATUS), output on, and POWER switch on can be monitored on each master and slave units.

・Do not connect the common wires of the master and

slave monitors outside of the PMC-A. If the wire connecting the load comes loose, the common wire will break.

46 PMC-A

■ Alarm

The alarm detected by single unit of the PMC-A can be also detected under the master-slave parallel operation.

Connection and setup procedure

Turn off the OUTPUT and POWER switches on all power supplies that are to be connected in parallel.

Choose the power supply that will be the master.

Set the OVP (overvoltage protection) trip point on the master and slave power supplies.

In parallel operation, set the OVP trip point not only on the mas- ter power supply but also slave power supplies. However, set the OVP trip point of the slave power supplies slightly higher than that of the master power supply, so that the OVP function of the master power supply is activated first.

Connect and set up each power supply as shown in Fig. 4-5. Set the S5 switch on all slave power supplies to the down (0) position.

As for handling J1 terminal, see page 45, Fig. 4-4 Connection to J1 terminal.

PMC-A master unit

1 0

–

Load

–

Basic Operation

PMC-A slave unit

To J1-2 of the next slave unit

1 0

Down

–

Connect the short bar to either the negative or positive output terminal only on the master unit

Fig. 4-5 Master-slave parallel connection and

setup

PMC-A 47

・When performing master-slave parallel operation,

CAUTION

be sure to follow the procedure below. Since the slave power supply is under master power supply's control, a mistake in the procedure may cause the slave power supply to output the maximum voltage.

Starting and ending parallel operation

■ Start procedure

Turn off the OUTPUT and POWER switches on all power supplies that are connected in parallel.

Turn on the POWER switch on the slave power sup- plies.

Turn on the POWER switch on the master power supply.

Turn the VOLTAGE and CURRENT knobs of the slave power supplies clockwise all the way.

If the output setting of the slave power supplies is not set to the maximum, the slave power supplies will not be able to follow up the output setting of the master power supply.

While holding down the LIMIT switch on the master power supply, set the output voltage and output cur rent.

The actual output current setting is the value specified on the master power supply multiplied by the number of power sup plies.

Turn on the OUTPUT switch on the slave power sup- plies.

C.C lights on the slave power supply panels.

Turn on the OUTPUT switch on the master power supply.

48 PMC-A

C.V lights on the master power supply panel.

CAUTION

■ End procedure

Turn off the OUTPUT switch on the master power supply.

Turn off the OUTPUT switch on the slave power sup- plies.

Turn off the POWER switch on the slave power sup- plies.

Turn off the POWER switch on the master power supply.

When the Output voltage cannot be set. (Type I model only)

When the output voltage cannot be set with the master unit or a few voltages are output at 0 V setting, adjust the variable resis tor for calibration in the following procedure. See page 67, Test equipment required for calibrationfor the test equipment required and environment. See Fig. 6-3 for the connection of the equipment.

・Do not set the output current greater than or equal

to 105 % of the rated current for this adjustment. If you do, the power supply may malfunction.

■ Adjustment procedure

Set the output current to 0 A.

When operating by the front panel (local control), turn the VOLTAGE knob counterclockwise all the way. When using ana log remote control, set the control signal to 0 V or 0 Ω.

Basic Operation

Turn on the OUTPUT switch.

PMC-A 49

CAUTION

Turn the VOLTAGE knob clockwise until constant current operation is achieved.

Offset adjustment is always performed under constant current operation.

Adjust Iout OFS (Variable resistor D) so that the out- put current (a value calculated from the external DVM reading and shunt resistance) is 0 A.

Turn Iout OFS (variable resistor D) 1 to 1.5 scales (angle of approx. 30 to 40 degree) counterclockwise.

Set the output current to the rated output current.

When operating by the front panel (local control), turn the CURRENT knob clockwise all the way. When using ana log remote control, set the control signal to 10 V or 10 kΩ.

Adjust Iout MAX (Variable resistor B) so that the out- put current (a value calculated from the external DVM reading and shunt resistance) is slightly higher than the rated current.

When the rated output voltage is set, operation mode of the slave unit changes from CC to CV. (Type I model only)

Readjust the output voltage at full scale in the following proce- dure. See page 67, Test equipment required for calibrationfor the test equipment required and environment. See Fig. 6-2 for the connection of the equipment.

・Do not set the output voltage greater than or equal

to 105 % of the rated voltage for this adjustment. If you do, the power supply may malfunction.

■ Adjustment procedure

Set the output voltage to the maximum output volt- age.

50 PMC-A

When operating by the front panel (local control), turn the

WARNING

VOLTAGE knob clockwise all the way. When using analog remote control, set the control signal to 10 V or 10 kΩ.

Adjust the output voltage in either of two ways shown in the following.

• Adjust Vout MAX (variable resistor A) so that the output voltage of the slave unit (DVM reading) is 50 mV higher than that of the master unit.

• Adjust Vout MAX (variable resistor A) so that both output voltages of the master and slave units are the voltage value shown in the following or less.

PMC18-1A

PMC18-2A

PMC18-3A

PMC35-0.5A

PMC35-1A

PMC35-2A

4.7 Series Operation

18.10 V ± 0.01 V

Basic Operation

35.20 V ± 0.01 V

The output of the power supplies can be connected in series to increase the output voltage.

Master-slave series operation is not possible. The total of the output voltage of each power supply is supplied to the load.

・Be sure to observe the maximum number of slave

power supplies that can be connected in series. If the maximum output voltage of the power supplies connected in series exceeds the isolation voltage, electric shock may occur. Due to this reason, series operation is not possible on the PMC350-0.2A and PMC500-0.1A.

PMC-A 51

Maximum number of power supplies connected in series

The number of power supplies that can be connected in series depends on the output voltage of the model and the isolation voltage. Be sure the total output voltage of the power supplies connected in series does not exceed the isolation voltage. For the isolation voltage of each model, see the specifications.

Example In the case of the PMC35-3A, the isolation voltage

is 250 V. Therefore, the calculation gives 250/35 =

7.14 which means that up to seven power supplies can be connected in series.

4.7.1 Functions during Series operation

The functions of the PMC-A during series operation are as fol- lows.

■ Voltmeter and Ammeter

For the total output current, sum the each units.

■ Remote Sensing

Can not be used.

■ External Control

Can not be used.

■ External Monitoring

WARNING

・ Possible electric shock while the external moni-

toring is performed. When monitoring the output voltage or current during series operation, the common electric potential of the monitor signal is different between each unit.

52 PMC-A

• External monitoring of output voltage (V MON)

Can be monitored on each unit. For the total output voltage, sum the monitor values of each units.

• External monitoring of output current (I MON)

The output current of each unit can be monitored.

• Status monitors

The status of the constant voltage operation (CV STA-

TUS), constant current operation (CC STATUS), output on, and POWER switch on can be monitored on each unit.

■ Alarm

The alarm detected by single unit of the PMC-A can be also detected under the series operation.

Connection and setup procedure

Turn off the OUTPUT and POWER switches on all power supplies that are to be connected in series.

Set the OVP trip point on all power supplies.

Set the current that can be supplied to the load on all power supplies.

Basic Operation

Connect the power supplies as shown in Fig. 4-6.

The figure shows the case when two slave power supplies are connected in series.

Starting and ending series operation

To start series operation, turn on the POWER switch one by one in an arbitrary order with the OUTPUT switch on all power supplies turned off.

To stop series operation, turn off the OUTPUT switch on all power supplies, and then turn off the POWER switch one by one in an arbitrary order.

PMC-A 53

Fig. 4-6 Series Operation

PMC-A

Load

Connect the short bar to either the negative output terminal or the positive output terminal.

54 PMC-A

外部コントロ┃ル

External Control

This chapter describes external control functions.

For those customers using the PMC-A series with the type of 14 pins of J2 connector, please note that the PMCA series has been updated with adding the feature of external control of which existing the 14-pins connector is replaced by the 26-pins connector.

In case the external control function is used by the 14pins connector, connect the J2 connector (26-pins) to match the polarity slot against the polarity guide of the 14-pins plug, then the external control function can be used same as previous condition. As for the pin assign ment of the 14-pins and the 26-pins, see page 58, Table 53 "Pin arrangement of the J2 connector". Further- more, if the OMRON’s 14-pins plug is used, attach the lock lever, as an standard accessory, to the 14-pins plug for detaching prevention.

As for the polarity slot and the polarity guide, see page 57, Fig. 5-2 "J2 connector and plug assembly"

5.1 External Remote Control

The J2 connector on the rear panel can be used to control the power supply in the following manner.

Ta ble 5-1 Available controls

Output voltage control using an external voltage (CV-V)

Output current control using an external voltage (CC-V)

Output voltage control using an external resistor (CV-R)

Output current control using an external resistor (CC-R)

Control the output ON/OFF using an external contact

PMC-A 55

・Different control modes can be used simultaneously.

However, simultaneous use of CV-V and CV-R or CC-V and CC-R is not possible.

Readjustment for remote/local switching

The power supply is adjusted at the time of factory shipment assuming a front panel operation (local control). When using remote control (excluding output on/off using an external con tact), the power supply must be readjusted. Readjustment is also necessary when switching back from remote control to local control. For the adjustment procedure, see

tion.

Enables CV-V or CV-R Selects CV-V or CV-R

ABCD

S1 S2 S3 S4 S5

Enables master-slave

123456

By factory default, all switches are set to the up position (1)

parallel operation

Selects CC-V or CC-R Enables CC-V or CC-R

Fig. 5-1 Control switch

6.2 Calibra-

J2 connector

For the connection of the J2 connector, insert the contact that comes with the socket that is attached to the J2 connector when you receive the power supply from the factory.

Table 5-2 lists the tools and parts (made by Omron) needed to assemble the J2 connector socket. For details, on how to use the tools, read the catalogue and other information provided by Omron.

56 PMC-A

Ta ble 5-2 Tools and parts needed for assembly

KIKUSUI

ELECTRONICS

CORP.

Polarity Slot

Plug with polarity guide

   

㧖In case the external control function is used by

14-pins connector, connect the J2 connector (26-pins) matching the polarity slot against the polarity guide of the 14-pins plug.

 ޓ



Polarity Guide

Name Model

Socket XG5M-2632-N (accessory)

Recommended wire size: AWG24 (UL-

1061)

Contact XG5W-0031 (accessory)

Recommended wire size: AWG24 (UL-

1061)

Single contact connection tool

Contact removal tool

Semi-cover XG5S-1301 (2 pieces used)

XY2B-7006

XY2E-0001

External Control

PMC-A 57

Fig. 5-2 J2 connector and plug assembly

Ta ble 5-3 Pin arrangement of the J2 connector

pins

No.

type

- 1 CV STATUS

- 2 CC STATUS

- 3 V MON

- 4 I MON

- 5 N.C.

- 6 N.C.

1 7 EXT-V CV CONT

2 8

3 9 A COM

4 10 EXT-R CV CONT

5 11 EXT-R CC CONT

6 12 A COM

7 13

8 14 A COM

9 15 EXT-V CC CONT

10 16 NO CONNECTION

11 17 A COM

Signal Name Description

EXT-R CV CONT

COM

EXT-R CC CONT

COM

On during CV operation (open collector output by a photocoupler)*1

On during CC operation (open collector output by a photocoupler)*1

Output voltage monitor (Outputs 0 % to 100 % of the rated current using 0 V to 10 V)

Output current monitor (Outputs 0 % to 100 % of the rated current using 0 V to 10 V)

No connection

External voltage control of output voltage. (0 % to 100 % of the rated output voltage using 0 V to 10 V).

Common for external resistance control of output volt- age.

Common for external signal of pins 3, 4, 7, 15. Connected to the negative electrode (-S) of the sensing input when remote sensing is used. Connected to -(neg.) output when remote sensing is not used.

External resistance control of output voltage. (0 % to 100 % of the rated output voltage using 0 V to 10 V).

External resistance control of output current. (0 % to 100 % of the rated output current using 0 Ω to

Ω).

10 k

Same as pin 9.

Common for external resistance control of output cur- rent.

Same as pin 9.

External voltage control of output current. (0 % to 100 % of the rated output current 0 V to 10 V).

No connection

Same as pin 9.

58 PMC-A

pins

type

No.

12 18 D COM

13 19

14 20 D COM

- 21 N.C.

- 22 N.C.

- 23 ALM STATUS

- 24 OUT ON STATUS

- 25 PWR ON STATUS

- 26 STATUS COM

Signal Name Description

OUT ON/OFF

CONT

*1 Open collector output (maximum voltage 30 V, maximum current

approx. 5 mA) Insulated from the control circuits.

*2 Indicates the pin assignment of the 14-pins plug.

Common for external signal of pins 19. Connected to the negative electrode (-S) of the sens- ing input when remote sensing is used. Connected to -(neg.) output when remote sensing is not used.

Output on/off terminal. Turn off when a low (L) TTL level signal is applied. The internal circuit is pulled up to + 5 V through 10

Ω.

Same as pin 18.

No connection

Turns on when the OVP, OHP is activated. (open collector output by a photocoupler)*1

Turns on when the output is on. (open collector output by a photocoupler)*1

Turns on when the power switch is on. (open collector output by a photocoupler)*1

Common for status signal of pins 1, 2, 23, 24, and 25.

External Control

5.1.1 Remote Control Connection and Setup

WARNING

PMC-A 59

・Possible electric shock. Turn off the POWER

switch when wiring the J2 connector.

・Possible electric shock. When J2 connector is

not used, attach the remote control plug which comes with a standard accessory.

・

Possible electric shock and damage to internal cir- cuit. The common terminal of the J2 connector as well as resistors, voltage sources, and switches connected to the J2 connector are at approxi mately the same potential as the negative output

terminal. Protect them using insulation material

Eo = Em•Ein/10 Eo: Output voltage (V) Em: Rated output voltage (V) Ein: External voltage (V) 0 ≤ Ein ≤ Approx.10 V

having a withstanding voltage that is greater than the isolation voltage of the power supply.

Turn off the OUTPUT and POWER switches.

Select the control mode from Ta ble 5-1.

Combinations are also possible, but simultaneous use of CV-R and CV-V or CC-R and CC-V is not possible.

Refer to the setup and connection procedure for the appropriate control mode given in the subsequent sections and set the control switch and connect the control source.

Check the J2 connector connection and switch settings.

After performing the setup above, readjustment is necessary. For the adjustment procedure, see sec tion 6.2 Calibration.

Controlling the output voltage using external voltage

This mode is used to control the output voltage using an external voltage in the range of 0 V to approximately 10 V.

• The input impedance between J2-7 and J2-9 is approxi- mately 10 kΩ.

• Use a low-noise and highly stable source for Ein.

S2S1

Twist

1 0

V. CONT

R. CONT

E in

LOCAL

REMOTE

Fig. 5-3 CV-V setup and connection

60 PMC-A

Controlling the output voltage using external resis-

Eo = Em•Rin/10 Eo: Output voltage (V) Em: Rated output voltage (V) Rin: External resistor (kΩ) 0 ≤ Rin ≤ approx.10 kΩ

tance

This mode is used to control the output voltage using an external resistor in the range of 0 Ω to approx. 10 kΩ.

CAUTION

・If external resistor Rin comes loose, a voltage

above the rated output will be delivered. Be sure that the connection is secure.

• A current of approximately 1 mA flows through Rin at all

times.

• For Rin, use a highly stable resistor with good temperature coefficient and small aging effect such a 1/2 W or larger metal film or wire-wound type resistor.

LOCAL

REMOTE

S2S1

Twist

1 0

V. CONT

R. CONT

R in

Fig. 5-4 CV-R setup and connection

Controlling the output current using external voltage

External Control

This mode is used to control the output current using an external voltage in the range of 0 V to approximately 10 V.

• The input impedance between J2-15 and J2-17 is approxi- mately 10 kΩ.

• Use a low-noise and highly stable source for Ein.

PMC-A 61

Io = Im•Ein/10 Io : Output current (A) Im: Rated output current (A) Ein: External voltage (V) 0 ≤ Ein ≤ approx.10 V

撚る

Io = Im •Rin/10 Io : Output current (A) Im : Rated output current (A) Rin: External resistor (kΩ) 0 ≤ Rin ≤ approx.10 kΩ

25 26

LOCAL

REMOTE

S4S3

Tw is t

1 0

V. CONT

R. CONT

E in

Fig. 5-5 CC-V setup and connection

Controlling the output current using external resis- tance

This mode is used to control the output current using an external resistor in the range of 0 Ω to approx. 10 kΩ.

CAUTION

・If external resistor Rin comes loose, a current above

the rated output will be delivered. Be sure that the connection is secure.

• A current of approximately 1 mA flows through Rin at all times.

•

For Rin, use a highly stable resistor with good temperature coefficient and small aging effect such a 1/2 W or larger metal film or wire-wound type resistor

LOCAL

REMOTE

Fig. 5-6 CC-R setup and connection

Twist

62 PMC-A

V. CONT

1 0

R. CONT

S4S3

R in

Output on/off control

25 26

Tw is t

The output on/off can be controlled using an external contact. When the external contact is closed the output turns off.

• J2-19 is pulled up internally to + 5 V using 10 kΩ resistor.

• J2-20 is approximately at the same electrical potential as

the negative output terminal.

• Off has precedence in the output on/off operation. There- fore, if the OUTPUT switch on the front panel is not turned on, the output cannot be turned on using the external con tact.

•

If you press the LIMIT switch when the OUTPUT switch is on and the external contact is closed (output off condition), a cor rect output setting will not be displayed. Turn off the OUTPUT switch first and then press the LIMIT switch

Fig. 5-7 Output on/off control connection

External Control

5.2 Remote Monitoring

5.2.1 External Monitoring of the Output Voltage and Output Current.

The J2 connector consists of monitor outputs for output voltage and output current.

PMC-A 63

Ta ble 5-4 Monitor output of output voltage and

CAUTION

output current

Pin No. Signal name Description

9, 12, 14, 17 A COM

3 V MON

4 I MON

Common for remote control input, Common for output monitor

Monitor output of output voltage 0 to approx. 10 V for 0 to the rated output voltage

Monitor output of output current 0 to approx. 10 V for 0 to the rated output current

・ Shorting V MON and I MON to A COM can cause

damage to the PMC-A.

・ Monitor output rating

Output impedance : 1 kΩ or less Maximum output current : Approx. 10 mA

・ The monitor outputs are used to monitor the DC voltage

(mean value). They cannot be used to accurately monitor the AC components (ripple, transient response, etc.) of the actual output voltage or current.

5.2.2 External monitoring of the operating status

The J2 connector consists of status outputs that is used to externally monitor the operating status of the PMC-A. The following five status outputs are available.

The outputs are open collector outputs of photocouplers; they are insulated from the internal circuits of the PMC-A.

64 PMC-A

Ta ble 5-5 Status output

Pin No. Signal name Description Circuit

26 STATUS COM

1 CV STATUS

2 CC STATUS

23 ALM STATUS

24 OUTON STATUS

25 PWRON STATUS

Common for status output. Photocoupler emitter output.

Set to ON status when in constant voltage mode. Photocoupler collector out- put.

Set to ON status when in constant current mode. Photocoupler collector out- put.

Set to ON status when in protection function is activated. Photocoupler collector out- put.

Set to ON status when the OUTPUT is turned on. Photocoupler collector out- put.

Set to ON status when the POWER is turned on. Photocoupler collector out- put.

External Control

・ Maximum rating of each signal terminal

Maximum applied voltage (for each 1 pin) : 30 V, Maximum current (sink) approx. 5 mA.

PMC-A 65

Maintenance

Fuse rating varies depending on the model. For details, see Chapter 7 "Specifications".

This chapter describes replacing the fuse and calibration proce- dure.

6.1 Replacing the Fuse

WARNING

・ To prevent the possibility of electric shock, turn

off the POWER switch on the power supply and unplug the power cord plug before replacing the fuse.

・ Use a fuse of shape, rating, and characteristics

that conform to the power supply.

・ Using a fuse of a different rating or shorting the

fuse holder is dangerous. Never carry out such acts

Turn off the POWER switch and unplug the power cord.

Remove the power cord from the INPUT connector on the rear panel.

Remove the fuse holder using a tool such as a flat- blade screwdriver as shown in

Fig. 6-1.

Fig. 6-1 Removing the fuse holder

66 PMC-A

6.2 Calibration

The power supply is calibrated at the factory before shipment. However, periodic calibration is necessary due to changes that occur after extended use.

For calibration, contact your Kikusui agent or distributor. If you wish to calibrate the power supply, follow the procedure below. However, this calibration procedure omits some of the calibration items.

Test equipment required for calibration

For calibration, the following equipment is necessary.

• DC voltmeter (DVM) with measuring accuracy of 0.02 % or better.

• Shunt resistor with accuracy of 0.1 % or better (a resistor capable of handling the rated output current of the PMC-A series power supply being calibrated).

Environment

Perform calibration under the following environment.

• Ambient temperature: 23 °C ± 5 °C

• Ambient humidity: 80 % RH or less

To minimize the calibration error due to initial drift, warm up (turn on) the power supply for at least 30 minutes before cali bration. In addition, warm up the DVM and shunt resistor for their appropriate time.

Calibration Procedure

Calibration items can be grouped into two types: voltage sys- tem and current system. Calibration is performed using the variable resistors inside the front panel sub-panel cover.

PMC-A 67

Maintenance

• Never touch variable resistor 6, because it is not to be

Type I Type II

A Vout MAX Vout MAX

B Iout MAX Iout MAX

C Vout OFS Not used

D Iout OFS Not used

1 V METER FS Not used

2 I METER FS V METER FS

3 I METER OFS Vout OFS

4 V LIMIT FS V LIMIT FS

5 I LIMIT FS I METER FS

6 Undisclosed Undisclosed

adjusted by the user. If you turn this variable resistor by mistake, recalibration will be necessary. Please contact your Kikusui agent or distributor.

• The functionality of the variable resistors is different between Type I and Type II

A B C D

S1 S2 S3 S4 S5

1 2 3 4 5 6

Do not touch this variable resistor

O.V.P

Ta ble 6-1 Variable resistors

Voltage system calibration procedure

The following four items are available in the voltage system. Since the items are related, be sure to calibrate all items accord ing to the following procedure.

• Output voltage offset

• Output voltage at full scale

• Voltmeter at full scale

• Preset voltage indicator at full scale

■ Connecting the equipment

Turn off the OUTPUT and POWER switches.

Connect the cables as shown in Fig. 6-2.

68 PMC-A

Connect the negative terminal and the chassis ground ter- minal using a short bar.

PMC-A

DCvoltmeter

(DVM)

Fig. 6-2 Connection for voltage system calibration

Turn on the POWER switch.

■ Output voltage offset

Set the output voltage to 0 V.

When using local control, turn the VOLTAGE knob coun- terclockwise all the way. When using analog remote control, set the control signal to 0 V or 0 Ω.

Turn on the OUTPUT switch.

Turn the CURRENT knob clockwise until constant voltage operation is achieved.

Offset adjustment is always performed under constant voltage operation

Adjust Vout OFS so that the ou tput voltage (DVM reading) is 0 V.

Type I: Variable resistor C

Type II: Variable resistor 3

Maintenance

■ Output voltage at full scale

CAUTION

PMC-A 69

　・ Do not set the output voltage greater than or equal

　to 105 % of the rated voltage for this adjustment. 　If you do, the power supply may malfunction.

・ If the output voltage is being controlled using an external

voltage (CV-V mode) on Type II models, the output volt- age at full scale cannot be adjusted using the variable resistor. Adjust the external voltage to obtain the full scale voltage.

Set the output voltage to the maximum output volt- age.

When using local control, turn the VOLTAGE knob clockwise all the way. When using analog remote control, set the control signal to 10 V or 10 k

Adjust Vout MAX so that the output voltage (DVM reading) is slightly higher than the rated voltage.

Both Type I and Type II: Variable resistor A

■ Voltmeter at full scale

10.

Set the output voltage (DVM reading) to the rated voltage.

11.

Adjust V METER FS so that the voltmeter reading on the power supply is equal to the DVM reading.

Type I: Variable resistor 1

Type II: Variable resistor 2

Ω.

■ Preset voltage indicator at full scale

12.

Adjust V LIMIT FS so that the voltmeter reading on the power supply is equal to the external DVM read

ing when the LIMIT switch is pressed while delivering rated voltage.

Both Type I and Type II: Variable resistor 4

70 PMC-A

Current system calibration procedure

The following five items (two items on Type II models) are available in the current system. Since the items are related, be sure to calibrate all items according to the following procedure.

• Output current offset (Type I model only)

• Ammeter offset (Type I model only)

• Output current at full scale

• Ammeter at full scale

• Preset current indicator at full scale (Type I model only)

■ Connecting the equipment

Turn off the OUTPUT and POWER switches.

Connect the cables as shown in Fig. 6-3.

Connect the negative terminal and the chassis ground ter- minal using a short bar.

PMC-A

Shunt resistor

DC voltmeter

(DVM)

Fig. 6-3 Connection for current system calibration

Turn on the POWER switch.

■ Output current offset (Type I model only)

Set the output current to 0 A.

When using local control, turn the VOLTAGE knob coun- terclockwise all the way. When using analog remote control, set the control signal to 0 V or 0 Ω.

Turn on the OUTPUT switch.

Maintenance

PMC-A 71

Turn the VOLTAGE knob clockwise until constant current operation is achieved.

Offset adjustment is always performed under constant current operation.

Adjust Iout OFS so that the output current (a value calculated from the external DVM reading and shunt resistance) is 0 A.

Type I: Variable resistor D

■ Ammeter offset (Type I model only)

Adjust I METER OFS so that the ammeter reading on the power supply indicates 0.

Type I: Variable resistor 3

■ Output current at full scale

CAUTION

72 PMC-A

　・Do not set the output current greater than or equal

　to 105 % of the rated current for this adjustment. If 　you do, the power supply may malfunction.

・

If the output current is being controlled using an external voltage (CC-V mode) on Type II models, the output current at full scale cannot be adjusted using the variable resistor. Adjust the external voltage to obtain the full scale current.

Set the output current to the rated output current.

When using local control, turn the CURRENT knob clock- wise all the way. When using analog remote control, set the control signal to 10 V or 10 k

10.

Adjust Iout MAX so that the output current (a value calculated from the external DVM reading and shunt resistance) is slightly higher than the rated current.

Both Type I and Type II: Variable resistor B

Ω.

■ Ammeter at full scale

11.

Set the output current (a value calculated from the external DVM reading and shunt resistance) to the rated current.

12.

Adjust I METER FS so that the ammeter reading on the power supply is equal to the rated current.

Type I: Variable resistor 2

Type II: Variable resistor 5

■ Preset current indicator at full scale (Type I model only)

13.

Adjust I LIMIT FS so that the ammeter reading on the power supply is equal to the value calculated from the external DVM reading and shunt resistance when the LIMIT switch is pressed while delivering rated current.

Type I: Variable resistor 5

Maintenance

PMC-A 73

Specifications

This chapter gives description on the electrical and mechanical speci- fications of the PMC-A.

Unless otherwise specified, the specifications are based on the following conditions.

• The load is a pure resistance.

• The negative output is connected to the chassis terminal using the short

bar provided.

• After a warm-up time of 30 minutes has elapsed with the load current flowing at 23

• TYP values, standard values, and calculated values do not guarantee the performance. Use these values as a guideline when using the power sup ply.

°C ± 5 °C and 80 % rh or less.

74 PMC-A

7.1 Specifications (Type I)

Type I

PMC

18-1A

PMC

18-2A

PMC

18-3A

PMC

35-0.5A

Input specifications

Input power

Power consumption*1 (Max)

Inrush current

Peak current 20 A to 30 A

Half value width 5 ms

(Approx.

100 VAC ± 10 %, 50/60 Hz, single phase

(117 V, 200 V, 217 V, and 234 V are factory options)

Approx.

50 VA

65 VA)

Approx.

100 VA (Approx. 130 VA)

Approx.

160 VA

(Approx.

230 VA)

Approx.

50 VA

(Approx.

65 VA)

Output specifications

Voltage

Rated voltage 18 V 35 V

Variable range 0 V to 18 V 0 V to 35 V

Constant voltage characteristics

Resolution (Calculated value)*2

Preset knob turns

Source effect *3 1 mV 3 mV

Load effect *4 2 mV 4 mV 3 mV

Tr a ns i e n t response (standard value) *5

Ripple noise (RMS)*6

Full-load rise time (TYP) *7

No-load fall time (TYP) *8

Temperature coefficient

3.3 mV 6.3 mV

10 turns

50 µs

500 µV

70 ms

600 ms

100 ppm/ °C (TYP)

650 ms

PMC

35-1A

Approx.

95 VA

(Approx.

130 VA)

PMC

35-2A

Approx.

190 VA

(Approx.

250 VA)

40 ms

1 300 ms1 300

Specifications

PMC-A 75

Type I

Output specifications

Current

Rated current

PMC

18-1A

1 A 2 A 3 A 0.5 A 1 A 2 A

PMC

18-2A

PMC

18-3A

PMC

35-0.5A

PMC

35-1A

PMC

35-2A

Variable range 0 A to

Constant current characteristics

Resolution (Calculated value)*2

Preset knob turns

Source effect *3 10 mA

Load effect *4 5 mA

Ripple noise (RMS) *6

Te mp e ra t ure coefficient

180 µA 360 µA 540 µA 90 µA 180 µA 360 µA

1 A

0 A to

2 A

0 A to

3 A

10 turns

1 mA

200 ppm/ °C (TYP)

Display function

Operation display

C.V operation CV LED (green) lights

C.C operation CC LED (red) lights

Voltage display (fixed range)

Maximum display 19.99 199.9

Display error

Temperature coefficient

Current display (fixed range)

Maximum display 9.99 0.999

Display error

Temperature coefficient

± (0.5 % of rdg + 2 digits)

300 ppm/ °C (TYP)

±(1 % of rdg + 5 digits)

400 ppm/ °C (TYP)

0 A to

0.5 A

0 A to

1 A

0 A to

2 A

76 PMC-A

Type I

PMC

18-1A

PMC

18-2A

PMC

18-3A

PMC

35-0.5A

PMC

35-1A

Protection function

Overvoltage protection (OVP)

Overheat protection (OHP)

Temperature fuse Built into the wire-wound section of the 130 °C power trans-

Input fuse

Remote monitoring function

Monitor signal output *9

Status signal output *9 , *10

For 100 V system

For 200 V system

V MON (voltage)

at rated voltage output

at 0 V output

I MON (current)

at rated current output

at 0 V output

OUTON STATUS Turns on when the OUTPUT is on.

CV STATUS On during CV operation

CC STATUS On during CC operation

ALM STATUS Turns on when the OVP, OHP is activated.

PWRON STATUS Turns on when the POWER is on.

Preset range: Approx. 5 % to 105 % of the rated output volt-

OUTPUT turns off when the temperature reaches approx.

[99-02-

Reset by turning off the POWER switch

ALM LED lights when tripped

age

Reset by turning off the POWER switch

ALM LED lights when tripped

°C at the built-in heat sink.

110

former

2 A

(S.B)

0153]

[99-02-0152]

(S.B)

[99-02-

0154]

1.5 A(S.B)

3 A

4 A

(S.B)

[99-02-

0155]

2 A(S.B)

[99-02-

0153]

10.0 V ± 0.5 V

0.0 V ± 0.5 V

10.0 V ± 0.5 V

0.0 V ± 0.5 V

2 A

(S.B)

[99-02-

0153]

1.5 A(S.B)

[99-02-0152]

3 A

(S.B)

[99-02-

0154]

[99-02-

2 A(S.B)

[99-02-

Remote sensing function

Remote sensing

Compensate up to 0.6 V for a single line.

PMC

35-2A

4 A

(S.B)

0155]

0153]

Specifications

PMC-A 77

Type I

PMC

18-1A

PMC

18-2A

PMC

18-3A

PMC

35-0.5A

PMC

35-1A

Remote control function *9

Output voltage/control voltage ratio

Output voltage/control resistance ratio

Output current/control voltage ratio

Output current/control resistance ratio

1 A/

Approx.

10 V

1 A/

Approx.

10 k

18 V/

Approx. 10 V

18 V/

Approx. 10 k

2 A/

Approx.

10 V

2 A/

Approx.

10 k

3 A/

Approx.

10 V

3 A/

Approx.

10 k

0.5 A/

Approx.

10 V

0.5 A/

Approx.

10 k

35 V/

Approx. 10 V

35 V/

Approx. 10 k

1 A/

Approx.

10 V

1 A/

Approx.

10 k

Approx.

Master-slave parallel operation

Maximum number of connecting units

Up to four power supplies of the same model.

General

Environment specifications

Operation ambient temperature

Operation ambient humidity

Storage ambient temperature

Storage ambient humidity

Cooling system Unforced air cooling

Grounding polarity Possible for either Positive grounding or Negative grounding

Insulation resistance

Between chassis and input terminals

Between chassis and output terminals

Withstand voltage

Between input and output terminals

Between input terminals and chassis

Isolation voltage

(measured at an ambient temperature of 70 % rh or less)

10 % rh to 80 % rh (no condensation)

Less than or equal to 70 % rh (no condensation)

No abnormalities at 1500 VAC for 1 minute.

0 °C to + 40 °C

-10 °C to + 60 °C

500 VDC, 30 MΩ or more

500 VDC, 20 MΩ or more

± 250 V

PMC

35-2A

2 A/

10 V

2 A/

10 k

78 PMC-A

Type I

PMC

18-1A

PMC

18-2A

PMC

18-3A

PMC

35-0.5A

PMC

35-1A

PMC

35-2A

General

Weight Approx.

3.5 kg

Dimensions See Fig. 7-1

Accessories

Operation manual 1 pc.

Power cord 1 pc.

Analog remote control contact

Analog remote control plug

Lock lever 1 pc. (attached to the analog remote control plug)

Fuse *11 1 pc.

*1 At 100VAC rated load. *2 A value calculated from the number of windings of the variable resistor. In the ac-

tual case, take 3 times to 5 times this value as a guide line.

*3 With respect to ± 10 % of the line voltage. *4 With respect to 0 % to 100 % of the output current. *5 The time it takes for the output voltage to recover within 0.05 % + 10 mV of the

rating when the output current fluctuates in the 10 % to 100 % range. *6 At a measurement frequency bandwidth of 5 Hz to 1 MHz. *7 The time it takes for the output voltage to rise from 10 % to 90 % of the rating

when the output is turned on. *8 The time it takes for the output voltage to fall from 90 % to 10 % of the rating when

the output is turned off. *9 J2 connector on the rear panel. *10 Photocoupler open collector output. Maximum voltage 30 V, maximum current

(sink) approx. 5 mA. Insulated from the output and control circuits. Status signals

are not mutually insulated. *11 See the rating of the fuse in the specification of “Protection function”.

Approx.

4.0 kg

1 pc. (attached to the J2 connector on the rear panel)

Approx.

5.0 kg

20 pcs.

Approx.

3.5 kg

Approx.

4.0 kg

Approx.

5.0 kg

Specifications

PMC-A 79

7.2 Specifications (Type II)

Type II

Input specifications

Input power

Power consumption *1 (Max)

Inrush

Peak current

current

Half value width

Output specifications

Voltage

Rated voltage

Variable range

Constant voltage characteristics

Resolution (Calculated value) *2

Preset knob turns

Source effect *3

Load effect *4 5 mV 4 mV 5 mV 7 mV 10 mV 15 mV 25 mV 30 mV

Transient response (stan dard value) *5

Ripple noise (RMS) *6

Full-load rise time (TYP) *7

No-load fall time (TYP) *8

Temperature coefficient

PMC

18-5A

35-3A

100 VAC ± 10 %, 50/60 Hz, single phase

(117 V, 200 V, 217 V, and 234 V are factory option)

Aprx.

230 VA

280VA)

330 ms 380 ms 260 ms 270 ms 220 ms 100 ms 90 ms 90 ms

Aprx.

240 VA

(Aprx.

280VA)

70 A to 80 A 30 A to 50 A

18V 35V 70V 110V 160V 250V 350V 500V

0 V to

18 V

35 V

3.3 mV6.3 mV12.6 mV19.8 mV28.8 mV45.0 mV63.0 mV90.0

1 mV 3 mV 5 mV 7 mV 10 mV 15 mV 25 mV 30 mV

50 µs 100 µs

500 µV 1 mV 2 mV 3 mV 5 mV 10 mV

80 ms 450 ms 60 ms 50 ms 150 ms 100 ms 140 ms 190 ms

PMC

110-

70-1A

0.6A

0 V to

70 V

110 V

100 ppm/ °C (TYP)

PMC

160-

0.4A

0.25A

Approx. 150 VA

(Approx. 190 VA)

5 ms

0 V to

160 V

250 V

10 turns

PMC

250-

PMC

350-

0.2A

0 V to 350 V

PMC

500-

0.1A

Aprx.

110 VA

(Aprx.

140VA)

0 V to 500 V

80 PMC-A

Type II

Output specifications

Current

Rated current

Variable range

Constant current characteristics

Resolution (Calculated) *2

Preset knob turns

Source effect *3

Load effect *4

Ripple noise (RMS) *6

Temperature coefficient

Display function

Operation display

C.V operation

C.C operation

Voltage display (fixed range)

Max. display

Display error

Temperature coefficient

Current display (fixed range)

Max. display

Display error

Temperature coefficient

PMC

110-

18-5A

35-3A

70-1A

5 A 3 A 1 A 0.6 A 0.4 A 0.25 A 0.2 A 0.1 A

0 A to

5 A

0.9 mA0.54 mA180 µA108 µA72 µA45 µA36 µA18

5 mA 2 mA 1 mA

2 mA 1 mA

19.99 199.9 999

0 A to

3 A

1 A

10 mA 5 mA 3 mA

200 ppm/ °C (TYP)

CV LED (green) lights

CC LED (red) lights

0.6A

0 A to

0.6 A

10 turns

160-

0.4A

0 A to

0.4 A

250-

0.25A

0 A to

0.25 A

PMC

350-

0.2A

0 A to

0.2 A

± (0.5 % of rdg + 2 digits)

300 ppm/ °C (TYP)

9.99 0.999

± (1 % of rdg ＋ 5 digits)

400 ppm/ °C (TYP)

PMC

500-

0.1A

0 A to

0.1 A

µA

Specifications

PMC-A 81

PMC

Type II

PMC

18-5A

PMC

35-3A

PMC

70-1A

110-

0.6A

160-

0.4A

250-

0.25A

PMC

350-

0.2A

Protection function

Overvoltage protection (OVP)

Reset by turning off the POWER switch

ALM LED lights when tripped

Preset range: Approx. 5 % to 105 % of the rated output voltage

Overheat protection (OHP)

Reset by turning off the POWER switch

ALM LED lights when tripped

OUTPUT turns off when the temperature reaches approx.

°C at the built-in heat sink.

110

Temperature fuse Built into the wire-wound section of the 130 °C power trans-

former

Input fuse

For 100 V system

For 200 V system

4 A (S.B) [99-02-0155]

2 A (S.B) [99-02-0153]

Remote monitoring function

Monitor signal output *9

V MON (voltage)

at rated voltage output

at 0 V output

Monitor signal output *9

I MON (current)

at rated voltage output

at 0 V output

10.0 V ± 0.5 V

0.0 V ± 0.5 V

10.0 V ± 0.5 V

0.0 V ± 0.5 V

Status signal output *9 , *10

OUTON STATUS Turns on when the OUTPUT is on.

CV STATUS On during CV operation

CC STATUS On during CC operation

ALM STATUS Turns on when the OVP, OHP is activated.

PWRON STATUS Turns on when the POWER is on.

Remote sensing function

Remote sensing Compensate

up to 0.6 V for

Not Available

a single line.

PMC

500-

0.1A

82 PMC-A

PMC

Type II

PMC

18-5A

PMC

35-3A

PMC

70-1A

110-

0.6A

160-

0.4A

250-

0.25A

PMC

350-

0.2A

Remote control function *9

18 V/

35 V/

70 V/

110 V/

160 V/

250 V/

Output voltage/control voltage ratio

Output voltage/control resistance ratio

Output current/control voltage ratio

Output current/control resistance ratio

Aprx.

10 V

18 V/ Aprx.

10 k

5 A/

Aprx.

10 V

5 A/

Aprx.

10 k

Aprx.

10 V

35 V/

70 V/

Aprx.

10 k

3 A/

Aprx.

10 V

3 A/

Aprx.

10 k

Aprx.

10 k

1 A/

Aprx.

10 V

1 A/

Aprx.

10 k

10 V

110 V/

Aprx.

10 k

0.6 A/ Aprx.

10 V

0.6 A/ Aprx.

10 k

Aprx.

10 V

160 V/

Aprx.

10 k

0.4 A/ Aprx.

10 V

0.4 A/ Aprx.

10 k

Aprx.

10 V

250 V/

Aprx.

10 k

0.25 A/ Aprx.

10 V

0.25 A/ Aprx.

10 k

350 V/

Aprx.

10 V

350 V/

Aprx.

10 k

0.2 A/ Aprx.

10 V

0.2 A/ Aprx.

10 k

Master-slave parallel operation

Maximum number of connecting units

Up to four power supplies of the same model.

General

Environment specifications

Operation ambient temperature

Operation ambient humidity

Storage ambient temperature

Storage ambient humidity

10 % rh to 80 % rh (no condensation)

Less than or equal to 70 % rh (no condensation)

0 °C to + 40 °C

-10 °C to + 60 °C

Cooling system Unforced air cooling

Grounding polarity possible for either Positive grounding or Negative grounding

Insulation resistance

Between chassis and input terminals

Between chassis and output termi

nals

(measured at an ambient temperature of 70 % rh or less)

500 VDC, 30 MΩ or more

500 VDC, 20 MΩ or more

Withstand voltage

Between input and output terminals

Between input ter-

No abnormalities at 1500 VAC for 1 minute.

minals and chassis

PMC

500-

0.1A

500 V/

Aprx.

10 V

500 V/

Aprx.

10 k

0.1 A/ Aprx.

10 V

0.1 A/ Aprx.

10 k

Specifications

PMC-A 83

PMC

Type II

PMC

18-5A

PMC

35-3A

PMC

70-1A

110-

0.6A

160-

0.4A

250-

0.25A

350-

0.2A

PMC

500-

0.1A

General

Isolation voltage

Weight

Dimensions See Fig. 7-2

Accessories

Operation manual 1 pc.

Power cord 1 pc.

Analog remote control contact

Analog remote control plug

Lock lever 1 pc. (attached to the analog remote control plug)

Fuse *11 1 pc.

*1 At 100VAC rated load. *2 A value calculated from the number of windings of the variable resistor. In the ac-

tual case, take 3 times to 5 times this value as a guide line.

*3 With respect to ± 10 % of the line voltage. *4 With respect to 0 % to 100 % of the output current. *5 The time it takes for the outpu t voltage to recover within 0.05 % + 10 mV of the

rating when the output current fluctuates in the 10 % to 100 % range. *6 At a measurement frequencyt bandwidth of 5 Hz to 1 MHz. *7 The time it takes for the output voltage to rise from 10 % to 90 % of the rating

when the output is turned on. *8 The time it takes for the output voltage to fall from 90 % to 10 % of the rating when

the output is turned off. *9 J2 connector on the rear panel. *10 Photocoupler open collector output. Maximum voltage 30 V, maximum current

(sink) approx. 5 mA. Insulated from the output and control circuits. Status signals

are not mutually insulated. *11 See the rating of the fuse in the specification of “Protection function”.

± 250 V ± 500 V

Approx. 6.0 kg Approx. 5.5 kg

20 pcs.

1 pc. (attached to the J2 connector on the rear panel)

Approx

5.0 kg

84 PMC-A

7.3 Dimension Diagram

MAX

350

(

)

MAX

380

124

107

MAX

140

124

MAX

20 270

107

MAX

300

Fig. 7-1 PMC-A Type I Dimension diagram Unit: mm

(

)

Specifications

Fig. 7-2 PMC-A Type II Dimension diagram Unit: mm

PMC-A 85

86 PMC-A

REGULATED DC POWER SUPPLY PMC-A SERIES OPERATION MANUAL

Kikusui PMC18-3A Operations Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Symbols

Safety Precautions

How to Read This Manual

Contents

Function index

Front panel

Rear Panel

General Description

1.1 About This Manual

1.2 Product Overview

1.3 Features

1.4 Options

Installation and Preparation

2.1 Checking the Package Contents

2.2 Precautions Concerning Installation Location

2.4 Rack-mount Adaptor Installation

2.5 Connecting the Power Cord

2.6 Ground (Earth)

2.7 Turning On the Power

Inrush Current

Reverse Polarity

Connecting the Load

3.1 Load Considerations

3.1.1 When the Load Current Has Peaks or is Pulse- shaped

3.2 Connecting the Load

3.2.1 Load Cable

Current capacity of the load cable

Taking measures against noise

Voltage rating of the load cable

3.2.2 Connecting to the Output Terminal

Basic Operation

4.1 Constant Voltage (CV) and Constant Current (CC) Power Supplies

Crossover point

Example of CV/CC mode operation

4.2 Using the Power Supply as a Constant Volt ag e Powe r Su p ply

Output Setup Procedure

4.3 Using the Power Supply as a Constant Current Power Supply

Output Setup Procedure

4.4 Protection Function

4.4.1 Overvoltage Protection (OVP) Function

Setup procedure of the OVP trip point

Clearing alarms

4.4.2 Overheat Protection (OHP) Function

4.4.3 Other Protection Functions

4.5 Remote Sensing

Handling of SENSING terminals

Connection and setup procedure

4.6 Master-Slave Parallel Operation

Handling of J1 Terminal

Connection and setup procedure

Starting and ending parallel operation

4.7 Series Operation

Maximum number of power supplies connected in series

4.7.1 Functions during Series operation

Connection and setup procedure

Starting and ending series operation

External Control

5.1 External Remote Control

J2 connector

5.1.1 Remote Control Connection and Setup

Controlling the output voltage using external voltage

Controlling the output current using external voltage

Output on/off control

5.2 Remote Monitoring

5.2.1 External Monitoring of the Output Voltage and Output Current.

5.2.2 External monitoring of the operating status

Maintenance

6.1 Replacing the Fuse

6.2 Calibration

Test equipment required for calibration

Environment

Calibration Procedure

Voltage system calibration procedure

Current system calibration procedure

Specifications

7.1 Specifications (Type I)