Yokogawa Yokogawa PR300-31003-6RO/S02 Manual

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User’s Manual

Model PR300 Power and Energy Meter

IM 77C01E01-01E

5th Edition

Introduction

Thank you for purchasing the PR300 Power and Energy Meter. This manual provides information about the procedure for installing, wiring and operating the PR300 Power and Energy Meter, as well as precautions for handling the product. Read this manual carefully before use, in order to use the product correctly and safely. (Record the parameter settings of the PR300 on MEMO column in Appendix 4, “Parameter List” of this manual.)

■ Intended Readers

This manual is intended for personnel in charge of the installation and wiring, instrumentation and control equipment, maintenance of equipment, and operation and monitoring.

■ Related Documents

The following user’s manuals all relate to the PR300 Power and Energy Meter. Read them as necessary.

Printed manuals

Model PR300 Power and Energy Meter Startup Manual <Installation> Document number: IM 77C01E01-02E Model PR300 Power and Energy Meter Startup Manual <Initial Setup Operations>

Electronic manual (PDF file)

Model PR300 Power and Energy Meter Communication Interface User’s Manual (RS-485 and Ethernet Communications)

■Notes on This Manual

●The contents of this manual are subject to change without prior notice for reasons of performance and/

or functional enhancements.

●Every effort has been made to ensure accuracy in the preparation of this manual. Should any errors or omissions come to your attention however, please contact your nearest Yokogawa branch or sales office.

●Reprinting and reproducing the contents of this manual either in part or in their entirety, is prohibited without the prior consent of Yokogawa.

●The document concerning TCP/IP software has been created by Yokogawa based on the BSD Networking Software, Release 1 that has been licensed from the University of California.

■Trademark

●All the brands or names of Yokogawa Electric’s products used in this manual are either trademarks or

registered trademarks of Yokogawa Electric Corporation.

●Ethernet is a registered trademark of XEROX Corporation in the United States.

●Company and product names that appear in this manual are trademarks or registered trademarks of

their respective holders.

Document number: IM 77C01E01-03E

Document number: IM 77C01E01-10E

■Documentation Conventions

Symbols

This manual uses the following symbols.

●Symbols Used in the Main Text

NOTE

TIP Gives additional information to complement the present topic.

See Also Gives reference locations for further information on the topic.

Draws attention to information that is essential to understanding the operation and/or features of the product.

■Description of Displays

(1) Some of the representations of product displays shown in this manual may be exaggerated,

simplified, or partially omitted for reasons of convenience when explaining them.

(2) Figures and illustrations representing the PR300’s displays may differ from the real displays in regard

to the position and/or indicated characters (uppercase or lowercase, for example), the extent of difference does not impair a correct understanding of the functions and the proper operations and monitoring of the system.

■Revision Information

1st Edition: April, 2006 2nd Edition: August, 2006 3rd Edition: February, 2007

IM 77C01E01-01E

4th Edition: June 2008

5th Edition: September, 2017

Notices

■Regarding This User’s Manual

• This manual should be passed on to the end user. Keep the manual in a safe place.

• Read this manual carefully to gain a thorough understanding of how to operate this product before you

start using it.

• This manual is intended to describe the functions of this product. Yokogawa Electric Corporation

(hereinafter referred to as Yokogawa) does not guarantee that these functions are suited to the particular purpose of the user.

• Under absolutely no circumstances may the contents of this manual, in part or in whole, be transcribed

or reproduced without prior consent.

• The contents of this manual are subject to change without prior notice.

• Every effort has been made to ensure accuracy in the preparation of this manual. Should any errors or

omissions come to your attention however, please contact your nearest Yokogawa representative or our sales office.

■Regarding Protection, Safety, and Prohibition Against Unauthorized Modification

• In order to protect the product and the system controlled by it against damage and ensure its safe use,

be certain to strictly adhere to all of the instructions and precautions relating to safety contained in this document. Yokogawa does not guarantee safety if products are not handled according to these instructions.

• The following safety symbols are used on the product and/or in this manual.

● Symbols Used on the Product and in This Manual

This symbol on the product indicates that the operator must refer to an explanation in the user’s manual in order to avoid the risk of injury or death of personnel or damage to the instrument. The manual describes how the operator should exercise special care to avoid electric shock, electrocution or other dangers that may result in injury or loss of life.

Protective Grounding Terminal This symbol indicates that the terminal must be connected to ground prior to operating the equipment.

CAUTION

● Power supply Check that the voltage of the power supply agrees with the rated supply voltage of the Meter.

● Protective grounding To avoid electric shock, be sure to provide protective grounding before turning on the Meter.

● Need for protective grounding Do not cut the internal or external protective grounding conductor of the Meter or disconnect the conductor from the protective grounding terminal. In either case, the protective functions of the Meter will become ineffective, resulting in a hazardous situation.

● Defect of protective grounding If the protective functions of protective grounding or fuses are assumed to be defective, do not operate the Meter. Before putting the Meter into operation, check that the protective functions are normal.

● Use in a gaseous environment Do not put the Meter in operation in a location where any combustible or explosive gases or fumes are present. It is extremely dangerous to use the Meter under such conditions.

● Removal of casing No person except Yokogawa service personnel is allowed to remove the casing. Removing the casing is hazardous since the Meter contains high-voltage parts.

● External wiring Securely provide protective grounding before wiring the Meter to the measuring object or external control circuit.

● Damage to protective construction Operating the Meter in a way not described in this manual may impair the protective construction of the Meter.

IM 77C01E01-01E

■Force Majeure

• Yokogawa does not make any warranties regarding the product except those mentioned in the

WARRANTY that is provided separately.

• Yokogawa assumes no liability to any party for any loss or damage, direct or indirect, caused by the

use or any unpredictable defect of the product.

• Be sure to use the spare parts approved by Yokogawa when replacing parts or consumables.

• Modification of the product is strictly prohibited.

• Reverse engineering such as the disassembly or decompilation of the product is strictly prohibited.

• No portion of the product supplied by Yokogawa may be transferred, exchanged, leased, or sublet for

use by any third party without the prior permission of Yokogawa.

Checking the Package

Verify the package as explained below before starting to use the product. Should the delivered product be wrong or the package be missing any item, contact the vendor from which you purchased the product.

Checking the Model and Suffix Codes

The PR300 bears a nameplate. Confirm that “MODEL” and “SUFFIX” (suffix codes) shown on the nameplate agree with those of the product ordered.

Model

PR300

Phase and wire system

Input voltage/ input current

Additional input and output function

Communication function

Optional measuring function

Power supply Phase indication format

0 1

Suffix Codes

-ⵧ ⵧ ⵧ ⵧ ⵧ -6 ⵧ -0

-3

-4

-5 1 2

2 3

Description

Power and Energy Meter Universal three-phase three-wire system (single-phase two-wire,

single-phase three-wire, and three-phase three-wire systems)

Universal three-phase four-wire system ( phase three-wire, three-phase three-wire, and three-phase four-wire systems

Three-phase four-wire system (2.5 element) Universal voltage input *2 (150 V, 300 V, 600 V) / 1 A Universal voltage input *2 (150 V, 300 V, 600 V) / 5 A 1 digital input 1 digital input, 1 analog output 1 digital input, 1 pulse output 1 digital input, 1 analog output, 1 pulse output RS-485 communication

-6

RS-485 communication, Ethernet communication None Demand measurement (1 demand alarm output) 100-240 V AC ±10% (50/60 Hz) or 130-300 V DC ±15% A, B, and C indications R, S, and T indications Always 0

-0

*1 Can be used only when the voltage is in a state of equilibrium.

In cases where “Three-phase four-wire system (2.5 element)” is specified, the input current specification of 1 A AC is not applicable.

*2 Set the voltage range (150 V, 300 V or 600 V) according to the rated input

voltage to be measured.

Rated input voltage

120 V 240 V 480 V

*3 For Ethernet communication, the RS-485 communication interface is

exclusively for the Ethernet-serial gateway function.

Voltage range

single-phase two-wire, single-

Allowable input voltage

150 V 300 V 600 V

)

150 V 300 V 600 V

IM 77C01E01-01E

Serial Number (NO.)

Also inform this number shown in “NO.” on the nameplate when contacting the vendor from which you purchased the PR300.

iii

Checking the Package

Checking the Accessories

(1) JIS/ANSI-mounting kit

Bezel

(2) DIN-mounting

brackets

(for DIN 96-square instr

ument panel

mounting)

(5) Shor

ting bar

(for RS-485 communication termination)

(6) Tag number labels

Panel-mounting bracket

(3) Dust cover

(with 1 fixing screw)

(7) Star

tup Manuals

(Installation/Initial Setup Operations)

Model PR300

Power and Energy Me

<Initial S

etup O

Model PR300

Power and Energy Me

<Installation

erations>

Panel-mounting bolts (2)

Bracket-fixing screws (2)

Nuts (2)

Flat washers (2)

Spring washers (2)

(4) Terminal cover

(with 3 fixing screws)

ter

Item Name (1) JIS/ANSI-mounting kit

(2) DIN-mounting brackets

Bezel Panel-mounting bracket Panel-mounting bolts Bracket-fixing screws Flat washers Spring washers Nuts

Qty

1 1 2 2 2 2 2 2

Remarks Used to mount the PR300 according to the ANSI 4-inch round form size or JIS110-square instrument size.

Used to mount the PR300 according to the DIN 96-square instrument size.

(3) Dust cover

Fixing screw

(4) Terminal cover

Fixing screws (5) Shorting bar (6) Tag number label (7) Startup manual

1 1 1 3 1 2 2

Attached onto the top of the PR300 main unit.

Attached to the PR300 terminal section. (Must always be attached to avoid a possible electric shock.) Used in RS-485 communication if the

PR300

is a terminal device.

A quick reference manual for use in initial installation.

IM 77C01E01-01E

Model PR300 Power and Energy Meter

IM 77C01E01-01E

Introduction....................................................................................................................i

Notices ..................................................................................................................... ii

Checking the Package ................................................................................................ iii

■ Checking the Model and Suffix Codes ...................................................................................... iii

■ Checking the Accessories ......................................................................................................... iv

Chapter 1 Installation and Wiring

1.1 Installation with the ANSI 4-inch Round Form or JIS 110-square Instrument Size............ 1-1

External Dimensions ...................................................................................................................1-1

Panel Cutout Dimensions ........................................................................................................... 1-1

Mounting Method......................................................................................................................... 1-2

1.2 Installation with the DIN 96-square Instrument Size .......................................................... 1-3

External Dimensions ...................................................................................................................1-3

Panel Cutout Dimensions ........................................................................................................... 1-3

Mounting Method......................................................................................................................... 1-4

1.3 Wiring ..................................................................................................................................1-5

Crimping Terminal Recommendations ........................................................................................1-5

Single-phase two-wire system (voltage input, current input, power supply) .............................1-6

Single-phase three-wire system (voltage input, current input, power supply) ........................... 1-6

Three-phase three-wire system (voltage input, current input, power supply) ........................... 1-6

Three-phase four-wire system (voltage input, current input, power supply) ............................. 1-7

Three-phase four-wire system (2.5 element) (voltage input, current input, power supply) ....... 1-7

Other Wiring ................................................................................................................................ 1-8

1.4 Attaching the Dust Cover and Terminal Cover ...................................................................1-9

Chapter 2 Preparations before Starting Measurement (Set up the PR300 First)

2.1 Component Names and Functions ..................................................................................... 2-1

2.2 Setting the Phase and Wire System ...................................................................................2-2

Range of Phase and Wire System Options ................................................................................2-3

2.3 Setting the Voltage Range ..................................................................................................2-4

Range of Voltage Range Options ...............................................................................................2-5

Chapter 3 Parameter Setting Operations

3.1 Basic Parameter Setting Operations ..................................................................................3-1

Methods of Changing Parameter Setpoints ............................................................................... 3-1

3.2 Setting the VT and CT Ratios ............................................................................................. 3-2

Setting the VT Ratio ....................................................................................................................3-2

Setting the CT Ratio ....................................................................................................................3-3

3.3 Setting the Integrated Low-cut Power................................................................................. 3-4

3.4 Setting RS-485 Communication Conditions ....................................................................... 3-6

3.5 Setting Ethernet Communication Conditions ......................................................................3-8

3.6 Setting Pulse Output Conditions .......................................................................................3-10

3.7 Setting Analog Output Conditions ..................................................................................... 3-12

Relationship between Scale Values and Measurement Inputs (Example) ..............................3-13

3.8 Setting Demand Measurement Conditions .......................................................................3-14

3.9 Setting the Measured Value Display Pattern ....................................................................3-16

3.10 Setting the “Indicator-out” Mode and Locking Parameters...............................................3-19

Setting the Indicator-out Mode..................................................................................................3-19

Locking and Unlocking Parameters ..........................................................................................3-20

IM 77C01E01-01E

TOC-1

Contents

Chapter 4

Operation for Display of Measurement Items and Measurement Method

4.1 Measurement Items ............................................................................................................4-1

4.2 Switching Display Pattern ...................................................................................................4-2

Switching Display Pattern ...........................................................................................................4-2

Initial Values and Example Display Patterns ..............................................................................4-2

4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values............................. 4-3

Example Display and Measuring Ranges of Active Power (Regenerative Power) ................... 4-3

Example Display and Measuring Ranges of Reactive Power .................................................... 4-3

Example Display and Measuring Ranges of Apparent Power ...................................................4-3

Example Display and Measuring Ranges of Voltage .................................................................4-4

Example Display and Measuring Ranges of Current ................................................................. 4-4

Example Display and Measuring Ranges of Power Factor ........................................................ 4-4

Example Display and Measuring Ranges of Frequency ............................................................4-5

How to Switch between Instantaneous Value, Maximum Value, and Minimum Value ..............4-5

4.4 Phase Switching for Voltage and Current ...........................................................................4-6

How to Switch the Phase for Single-phase Three-wire, Three-phase Three-wire and

How to Switch the Phase for Three-phase Four-wire System ...................................................4-6

How to Read the Phase Indication Lamp ...................................................................................4-6

Three-phase Four-wire (2.5 element) Systems .......................................................... 4-6

4.5 Displaying Energy Values ...................................................................................................4-7

Example Display and Measuring Ranges of Active Energy and Regenerative Energy ............4-7

Example Display and Measuring Ranges of LEAD Reactive Energy and LAG Reactive Energy ....

Example Display and Measuring Ranges of Apparent Energy ..................................................4-7

Operation for Energy Value Display ........................................................................................... 4-8

Optional Integrating Function...................................................................................................... 4-9

4.6 Resetting Measured Values ..............................................................................................4-10

Resetting Maximum and Minimum Values ...............................................................................4-10

Resetting Energy Value............................................................................................................. 4-10

Canceling Reset Item Selection (Returning to the Measured Value screen without resetting) ......

Reset Items and Details ............................................................................................................ 4-11

4.7 Demand Measurement (Optional Measuring Function) ...................................................4-12

Example Demand Display and Measuring Ranges .................................................................. 4-12

Demand Measurement Procedure ............................................................................................ 4-12

Operation for Demand Measurement .......................................................................................4-13

Demand Alarm ...........................................................................................................................4-14

Example Demand Measurement .............................................................................................. 4-14

Chapter 5 Troubleshooting

5.1 Error Display and Recommended Response ..................................................................... 5-1

5.2 Maintenance ........................................................................................................................5-2

Appendix

Appendix 1 Specifications of PR300 ......................................................................................... A-1

Measuring Function .................................................................................................................... A-1

Power Items and Equations ....................................................................................................... A-2

Input Specifications .................................................................................................................... A-2

Digital Input Specifications ......................................................................................................... A-3

Analog Output Specifications (additional output function) ........................................................ A-3

Pulse Output Specifications (additional output function) .......................................................... A-3

Demand Alarm Output Specifications (optional measuring function) ....................................... A-4

Communication Specifications ................................................................................................... A-4

Standard Performance ............................................................................................................... A-6

Safety and EMC Standards ....................................................................................................... A-7

Environmental Conditions .......................................................................................................... A-8

Mounting and Shape .................................................................................................................. A-8

Appendix 2 System Reset ........................................................................................................... A-9

Appendix 3 Parameter Map....................................................................................................... A-10

Appendix 4 Parameter List ....................................................................................................... A-12

Appendix 5 Alphanumeric Characters Table for ............................................................................

7-segment LED ............................................................................................................... A-16

Index

4-7

4-11

TOC-2

IM 77C01E01-01E

Chapter 1 Installation and Wiring

1.1 Installation with the ANSI 4-inch Round Form or JIS 110-square Instrument Size

The PR300 can be installed so that it handles ANSI 4-inch round form or JIS 110-square instruments panel cutouts by attaching the “JIS/ANSI-mounting kit” accessory.

External Dimensions

(126.5) (109)

104.5

Dust cover

2-M5

1 to 10

(Acceptable panel thickness for mounting)

1.5

Terminal cover

110 109

Panel Cutout Dimensions

110

Bezel

Installation and Wiring

Unit: mm

ANSI

42.9±0.4

[1.688±0.015]

42.9±0.4

[1.688±0.015]

Multiple Mounting

42.9±0.4

[1.688±0.015] [1.688±0.015]

42.9±0.4

[6.299 min.]

160 min.

[6.299 min.]

160 min.

ø101.6

[ø4.000]

ø7.9

[ø0.312]

JIS

45±0.3

45±0.3 45±0.3

Unit: mm

[approx. inch]

ø101

ø6.5

When installing the PR300, provide spacing of 50 mm or more between each face of the PR300 body and the instrument next to the PR300 or between each face and the wall surface.

● Normal Allowable Deviation =  (Value of JIS B 0401-1998 Tolerance Grade IT18) / 2

IM 77C01E01-01E

1-1

1.1 Installation with the ANSI 4-inch Round Form or JIS 110-square Instrument Size

WARNING

● Install the PR300 in the secondary side of the existing breaker.

● Provide spacing of 50 mm or more between the products.

Mounting Method

Set the direction of the panel-mounting bracket.

The diagram on the right shows the front of the bracket (the side into which the panel-mounting bolt is inserted). Rotating the bracket 90° makes the bracket compatible with either ANSI or JIS panel cutouts. Set the bracket to either the ANSI or JIS mark according to which type of panel you are installing, as shown in the diagram on the right.

Bezel (standard accessory)

NOTE

● Do not install the PR300 in the following types of environments, as they may cause the PR300 to malfunction or fail. Avoid sites:

exposed to significant shock or vibration; where corrosive gases are present; where large amounts of dust are present; exposed to water; exposed to direct sunlight; outside; at altitudes above 2000 m.

●

The PR300 mounting position is for vertical panels only.

Front of the bracket

ANSI

Rotate 90°

Insert two panel-mounting bolts

into the front of the panelmounting bracket as shown in the diagram on the left.

Front of the bracket

JIS

PR300

Panel-mounting bolt (standard accessory: 2 bolts)

Panel-mounting bracket (standard accessory)

Panel-mounting bolt

Fix the panel-mounting bracket

securely to the back of the PR300 with two bracket-fixing screws as shown in the diagram on the left. (recommended tightening torque: 0.8 N•m)

Bracket-fixing screw (standard accessory: 2 screws)

Flat washer, spring washer, and nut (standard accessory: 2 of each)

Attach the bezel from the front of

the PR300.

Insert the PR300 from its rear

through the mounting cutout in the panel as shown in the diagram.

Secure the PR300’s panel-

mounting bolts by tightening them with the washers and nuts. (recommended tightening torque: 2.0 N•m)

1-2

IM 77C01E01-01E

1.2 Installation with the DIN 96-square Instrument Size

External Dimensions

110

12.3

(124.5) (109)

112.2 Dust cover

1.5

Installation and Wiring

Unit: mm

Panel Cutout Dimensions

+0.8

(68)

+0.8

92 (68)

1 to 10 (Acceptable panel

thickness for mounting)

160 min.

109

Terminal cover

Mounting bracket (2 places)

Unit: mm

160 min.

When installing the PR300, provide spacing of 50 mm or more between each face of the PR300 body and the instrument next to the PR300 or between each face and the wall surface.

● Normal Allowable Deviation =  (Value of JIS B 0401-1998 Tolerance Grade IT18) / 2

IM 77C01E01-01E

1-3

1.2 Installation with the DIN 96-square Instrument Size

WARNING

● Install the PR300 in the secondary side of the existing breaker.

● Provide spacing of 50 mm or more between the products.

Mounting Method

NOTE

● Do not install the PR300 in the following types of environments, as they may cause the PR300 to malfunction or fail. Avoid sites:

●

The PR300 mounting position is for vertical panels only.

Insert the PR300 from its rear through the mounting

cutout in the panel as shown in the diagram.

Mounting bracket (standard accessory: 2 brackets)

Affix the mounting brackets to the left and right

sides of the PR300. Secure the brackets to the PR300 by tightening the screws in the end of the mounting brackets with a screwdriver as shown in the diagram. (recommended tightening torque: 0.4 N•m)

1-4

IM 77C01E01-01E

1.3 Wiring

WARNING

● As there is a danger of electric shock, turn off the power supply and check that the cables to be connected are not conducting electricity before carrying out the wiring procedure.

● For safety, be sure to install a circuit breaker switch that conforms to an IEC60947-compatible product, 5 A, 100 V or 220 V AC near the PR300 so as to be operated easily, and clearly indicate that the device is used to de-energize the PR300.

● The wiring procedure for the PR300 should be carried out by a qualified person (an electrician etc.) with knowledge of electrical matters and who has actual experience.

● Install a current transformer (CT) inside a panel when using a conduit for wiring.

● Use a UL Listed Panel only for the panel on which the PR300 is installed.

● If the voltage is below 600 V AC, it is possible to connect the PR300 directly without using a voltage

transformer (VT) and if the current is below 5 A AC, it is possible to do so without using a current transformer (CT). However, in order to use the PR300 safely, the use of VT and CT is recommended. Use a UL Listed VT and CT for the PR300.

● Perform wiring for the voltage and current input in the same circuit.

● Check the following before turning on the power. Using the PR300 beyond the stated specifications

may cause it to heat up and burn out.

• Check that the power supply voltage, input voltage, and input current values to be applied to the PR300 agree with its specifications.

•

Check that the external wiring is connected to the terminals in accordance with the specifica-tions.

● Do not touch the screws in locations (a) to (f) shown in the wiring diagrams. They are an essential part of the structure of the PR300. Loosening or tightening them may result in a malfunction or failure of the PR300.

● Be sure to attach the terminal cover to prevent electric shock (refer to Section 1.4) .

Installation and Wiring

NOTE

● When attaching the terminal cover Since the terminal cover of PR300 has the structure of preventing electric shock, the terminal cover cannot be attached after completing all wiring. Refer to Section 1.4, “Attaching the Dust Cover and Terminal Cover” before wiring.

(1) Attach the terminal cover after completing the wiring to the terminals 2, 4, 6, 8, 23, 24, and 25. (2) Execute the wiring to the terminals other than those mentioned above after attaching the

terminal cover. If the dust cover is required, attach it before attaching the terminal cover.

●

Do not ground the input circuit when connecting voltage and current directly without using VT and CT.

Carry out the wiring referring to the diagrams on pages 1-6, 1-7, and 1-8. The wiring for voltage input, current input, and power supply is M4 screw terminal connection. For other wiring it is M3 screw terminal connection. The connector for connecting to the Ethernet is RJ45. Use strand wires for the wiring. Wiring cables with a nominal cross-sectional area of 1.25 mm are recommended for voltage/current input and power supply; cables with a nominal cross-sectional area of 0.5 mm

Crimping Terminal Recommendations

Ring tongue terminal

(A)

or thicker are recommended for other signals.

Spade tongue

(F)

(ød)

terminal

4.7 max.

(ød)

(A)

(F)

or thicker

Applicable terminals

Applicable wire size: 1.04 to 2.63 mm2 for M4, 0.25 to 1.65 mm2 for M3

ød (mm)

M4M34.4 max.

3.3 max.

(mm)F (mm)

7.0 max.

5.8 max.

7.8 max.

6.7 max.

Recommended tightening torque

1.2 N•m

0.6 N•m

IM 77C01E01-01E

1-5

1.3 Wiring

Single-phase two-wire system (voltage input, current input, power supply)

Power-source side

NOTE

Do not ground the input circuit when connecting voltage and current directly without using VT and CT.

Fuse

1S 1L

P1 P2

2 3

11 12 13 14 15 16

18 19 20 21 22

Lⴙ

Nⴚ

Power supply voltage

100-240V AC 10% or 130-300V DC 15%

Load side

Single-phase three-wire system (voltage input, current input, power supply)

Power-source side

1N2

NOTE

Do not ground the input circuit when connecting voltage and current directly without using VT and CT.

Fuse

1S 1L

2S 2L

P1 P0 P2

4 5

11 12 13 14 15 16

Refer to

18 19

“Other Wiring”

Lⴙ

Power supply

Nⴚ

Power supply voltage 100-240V AC 10% or 130-300V DC 15%

Refer to “Other Wiring”

Power supply

Load side

Three-phase three-wire system (voltage input, current input, power supply)

Power-source side

1-6

123

(R)B(S)C(T)

Load side

NOTE

Do not ground the input circuit when connecting voltage and current directly without using VT and CT.

Fuse

P1 P2

4 5

11 12 13 14 15 16

18 19 20 21 22

Lⴙ

Nⴚ

Power supply voltage

100-240V AC 10% or 130-300V DC 15%

Refer to “Other Wiring”

Power supply

IM 77C01E01-01E

1.3 Wiring

Three-phase four-wire system (voltage input, current input, power supply)

Power-source side

(R)B(S)C(T)

Load side

NOTE

Do not ground the input circuit when connecting voltage and current directly without using VT and CT.

Fuse

1S 1L

2S 2L

3S 3L P1

P0 P2

11 12 13 14 15 16

Refer to

18 19

“Other Wiring”

Lⴙ

Power supply

Nⴚ

Power supply voltage 100-240V AC 10% or 130-300V DC 15%

Three-phase four-wire system (2.5 element) (voltage input, current input, power supply)

Power-source side

(R)B(S)C(T)

NOTE

Do not ground the input circuit when connecting voltage and current directly without using VT and CT.

Fuse

3L P1 P0 P3

11 12 13 14 15 16

Refer to

18 19

“Other Wiring”

Lⴙ

Power supply

Nⴚ

Power supply voltage 100-240V AC 10% or 130-300V DC 15%

Installation and Wiring

IM 77C01E01-01E

Load side

1-7

1.3 Wiring

Other Wiring

Analog output

−

Output signal: 4 to 20 mA DC

Pulse output

−

Contact capacity 30V DC, 200mA (resistive load)

Demand alarm output

ALM+

ALM−

Contact capacity 30V DC, 200mA (resistive load)

RJ45 connector

10BASE-T 100BASE-TX

11 12 13 14 15 16

17 18 19 20 21 22

Ethernet communication

Color Description

Color

Description

Switching between 10BASE-T and 100BASE-TX takes place automatically. Switching between half and full duplex takes place automatically.

Link LED

Off Stopped

Active LED

Off

Stopped

Orange 10Mbps

Orange Half

duplex

Green 100Mbps

Green Full

duplex

RS-485 communication

TERM

*1 If Ethernet communication is used, the

RS-485 communication interface is used specifically for the Ethernet-serial gateway function.

*2 In the case of the PR300 with the

demand measuring function, the demand alarm release is selected.

When terminating, short-circuit terminals 17 and 18 with the shorting bar.

Optional integration control signal or demand alarm release

Voltage signal ON signal: 4.5 to 25 V DC

OFF signal: within 1V DC

Aⴚ Bⴙ SG

R:120(built-in)

DIⴙ

DIⴚ

1-8

IM 77C01E01-01E

1.4 Attaching the Dust Cover and Terminal Cover

WARNING

As there is a danger of electric shock, do not attach the dust cover and terminal cover while the wires are live.

NOTE

● Attach the dust cover before attaching the terminal cover.

● The recommended tightening torque for the screws for attaching the dust cover and terminal cover

is 0.8N•m.

Attaching the Dust Cover Attaching the Terminal Cover

Insert the two protruding portions on the underside of the dust cover into the grooves on the upper side of the PR300 as shown in the diagram below.

Complete the wiring to the terminals 2, 4, 6, 8, 23, 24 and 25, then secure the terminal cover in the open state shown in the diagram below with the two screws provided.

Installation and Wiring

Insert into the ▼ marked grooves

Secure the dust cover with the screw provided as shown in the diagram below.

Dust cover (standard accessory)

Complete the wiring to other terminals with the terminal cover open shown in the diagram below.

Close the terminal cover and secure it with the screw provided as shown in the diagram below.

IM 77C01E01-01E

1-9

Chapter 2 Preparations before Starting Measurement (Set up the PR300 First)

2.1 Component Names and Functions

Demand Alarm lamp < 9 >

Pulse Output lamp <10>

Communication lamp <11>

Power lamp < 1 >

MAX and MIN lamps < 6 >

Phase Indication lamps < 7 >

DEMAND lamp < 8 >

Name

<1> Power lamp

<2> Phase and Wire

System lamps

<3> Input Range lamps

Display Color

Green

< 2 > Phase and Wire System lamps

< 3 > Input Range lamps

< 4 > Measured Value display

Upper display

< 5 > Unit lamps

Middle display

Lower display

<12> Operation keys

Description

Lights up and remains lit when the PR300 is turned on and operating normally. Blinks (4 times/second) if a communication error occurs, and continues to blink until the PR300 returns to normal.

The phase and wire system option set in the PR300 lights up.

The voltage range option set in the PR300 and the current range (rated input) option specified at the time of ordering light up.

Preparations before Starting Measurement (Set up the PR300 First)

<4> Measured Value

display

<5> Unit lamps

<6> MAX and MIN lamps

<7>

Phase Indication lamps

<8> DEMAND lamp

<9> Demand Alarm lamp

<10> Pulse Output lamp

<11> Communication lamp

<12> Operation keys

Red

Green

Shows a measured value of power, energy, etc. Also shows a parameter symbol and its setpoint at the time of parameter setting.

Show the unit symbol of a measured value for each measurement item. These unit symbols are shown in combination depending on the type of measured value.

Light up when the maximum or minimum measured value is displayed.

Light up to tell for which phase the voltage or current value is being measured.

Lights up when the measured value of demand power or demand current is displayed. (Only supported for a PR300 with the demand measuring function.)

Lights up if the demand value exceeds the demand alarm point at any point in time other than the demand alarm mask time.

Lights up when the output is turned on in the pulse output mode and goes out when the output is turned off.

Blinks while RS-485 or Ethernet communication is in progress.

On the Measured Value screen, this key is used, for example, to switch the display pattern. Also used to set parameters on the Parameter screen.

On the Measured Value screen, these keys are used, for example, to move from one digit to another in an energy reading. Also used to set parameters on the Parameter screen.

On the Measured Value screen, this key is used, for example, to show the maximum/minimum value. Also used to set parameters on the Parameter screen.

On the Measured Value screen, this key is used, for example, to switch the phase of voltage/current. Also used to set parameters on the Parameter screen.

IM 77C01E01-01E

This key is used to start or stop demand measurement. The lamp (green) in the key lights up in the demand measurement.

2-1

2.2 Setting the Phase and Wire System

Operation

This section explains how to set the phase and wire system by taking as an example the case when a three-phase four-wire system is changed to a three-phase three-wire system.

Operation

Startup screen

Turn on the PR300.

Phase and Wire System screen

The PR300 shows the station number for about 5 seconds, then the Measured Value screen appears.

Measured Value screen

Phase and Wire System Setting screen

The Phase and Wire System screen appears.

Parameter symbol for

phase and wire system

Current value

Press once.

The Phase and Wire System Setting screen appears.

Setpoint

VT Ratio screen

Specification Change Confirmation screen

Hold down for

at least 3 seconds.

The parameter (VT ratio) appears.

Simultaneously hold down for at least 3

seconds.

The Specification Change Confirmation screen appears.

Using or ,

show on the lower display.

Using or ,

Phase and Wire System Setting screen

Phase and Wire System screen

Current value

select the setpoint.

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking.

The PR300 returns to the initial setting screen.

Press once while the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Phase and Wire System screen. The phase and wire system thus set is shown as the current value.

When proceeding to set the voltage range, start from step

in Section 2.3, “Setting the

Voltage Range,” with this screen (figure on the left) shown as is.

2-2

Press once.

Hold down for at least 3 seconds.

IM 77C01E01-01E

2.2 Setting the Phase and Wire System

Startup screen

The PR300 shows the Startup screen for about 5 seconds, then the Measured Value screen appears.

Measured Value screen

Setting completed.

NOTE

If you change the phase and wire system, all parameters other than those related to RS-485 and Ethernet communications are initialized (to factory-set values). Change the phase and wire system before setting parameters such as the VT and CT ratios.

Preparations before Starting Measurement (Set up the PR300 First)

Range of Phase and Wire System Options

Parameter

Symbol

Parameter

Name

Phase and

wire system

Setting Type Setting Range (Details)

Selection

Model and Suffix Codes

Single-phase two-wire system

Single-phase three-wire system

Three-phase three-wire system

Single-phase two-wire system

Single-phase three-wire system

Three-phase three-wire system

Three-phase four-wire system

Three-phase four-wire system (2.5 element)

Initial Value

(Factory-set

Value)

Three-phase

three-wire

system

Three-phase

four-wire

system

Three-phase

four-wire system

(2.5 element)

IM 77C01E01-01E

NOTE

● If single-phase three-wire system is selected, the voltage range is fixed at 300 V (between P0 and P1, P0 and P2). The voltage range cannot be selected.

● Three-phase four-wire system (2.5 element) can be used only when the voltage is in a state of equilibrium. In addition, the phase and wire system cannot be changed.

2-3

2.3 Setting the Voltage Range

Operation

This section explains how to set the voltage range by taking as an example the case when the voltage range is changed from 300 V to 600 V.

Operation

Startup screen

Turn on the PR300.

Phase and Wire System screen

The Phase and Wire System screen appears.

Measured Value screen

VT Ratio screen

Specification Change Confirmation screen

The PR300 shows the station number for about 5 seconds, then the Measured Value screen appears.

Hold down

for at least 3 seconds.

The parameter (VT ratio) appears.

Simultaneously hold down

for at least 3

seconds.

The Specification Change Confirmation screen appears.

Using or , show the Voltage Range screen.

Voltage Range screen

The Voltage Range screen appears.

Parameter symbol for voltage range

Current value

Press once.

Voltage Range Setting screen

The Voltage Range Setting

screen appears.

Setpoint

Using or ,

Voltage Range Setting screen

select the setpoint.

Specification Change Confirmation screen

2-4

Using or ,

show on the lower display.

Press once.

Voltage Range Setting screen

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the

setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while the setpoint is blinking.

IM 77C01E01-01E

2.3 Setting the Voltage Range

Voltage Range screen

NOTE

If you change the voltage range, all parameters other than those related to RS-485 and Ethernet communications are initialized (to factory-set values).Change the voltage range before setting parameters such as the VT and CT ratios.

The setpoint is confirmed and the PR300 returns to the Voltage Range screen. The voltage range thus set is shown as the current value.

Current value

Hold down for at

least 3 seconds.

When proceeding to set the phase and wire system, press or to show the Phase and Wire System screen, with this screen (figure in the upper-left corner) shown as is. After showing the Phase and Wire System screen, start from step

in Section 2.2, “Setting

the Phase and Wire System.”

Startup screen

The PR300 shows the Startup screen for about 5 seconds, then the Measured Value screen appears.

Preparations before Starting Measurement (Set up the PR300 First)

Measured Value screen

Setting completed.

Range of Voltage Range Options

Parameter

Symbol

Parameter Name Setting Type Setting Range (Details)

Voltage range

NOTE

● The voltage range of single-phase three-wire system is fixed at 300V (between P0 and P1, P0 and P2). The voltage range cannot be selected.

● Select the voltage range of three-phase four-wire system by the phase voltage (between P0 and P1, P0 and P2, P0 and P3).

Selection 150V

300V

600V

Initial Value

(Factory-set

Value)

300V

IM 77C01E01-01E

2-5

Chapter 3 Parameter Setting Operations

3.1 Basic Parameter Setting Operations

NOTE

Set parameters only after setting the phase and wire system and the voltage range. If you change the phase and wire system or voltage range after setting a parameter, the parameter will be initialized (to a factory-set value). Parameters related to RS-485 and Ethernet communications will not be initialized, however.

Methods of Changing Parameter Setpoints

Four setting types - integral numeric value, fixed-point numeric value, floating-point numeric value, and selection - have been defined for the parameters of the PR300. For each setting type, the following explains basic operations used to set parameters.

Integral numeric value or fixed-point numeric value

Current value

Setpoint

Parameter Setting Operations

To re-set the parameter:

Using or , change the numeric value.

123

To move to the digit to be changed, use the following keys: To the left To the right

After changing the numeric value, press

once.

This causes all digits of the setpoint to start blinking.

Floating-point numeric value

Current value

Setpoint

Using , confirm the number of decimal places.

To move the decimal point, use the following keys: To the left To the right

Using or , change the numeric value.

234

To move to the digit to be changed, use the following keys: To the left To the right

Selection

Current value

Setpoint

Change the setpoint using

123

After changing the setpoint, press

once.

This causes all digits of the setpoint to start blinking.

Press while all digits of the setpoint are blinking.

This confirms the setpoint.

After changing the numeric value, press

once.

This causes all digits of the setpoint to start blinking.

Press while all digits of the setpoint are blinking.

This confirms the setpoint.

Press any key other than while all digits of the

setpoint are blinking. The PR300 returns to the screen in step

Press while all digits of the setpoint are blinking.

This confirms the setpoint.

Key operations used

to set parameters

Moves from the Measured Value screen to the Parameter screen (hold down the key), or confirms the setpoint.

Shows a parameter from the menu, moves through the digits of a setpoint (numeric value) to the right, or moves the decimal point to the right.

Shows the next parameter or menu item, or changes the setpoint.

Shows the previous parameter or menu item, or changes the setpoint.

Returns from the Parameter screen to the Menu screen, moves through the digits of a setpoint (numeric value) to the left, or moves the decimal point to the left.

IM 77C01E01-01E

3-1

3.2 Setting the VT and CT Ratios

Operation

Setting the VT Ratio

This section explains how to set the VT ratio by taking as an example the case when the VT ratio is changed from the initial value (1) to 4.

Operation

Measured Value screen

VT Ratio Setting screen

To move to the digit to be changed, use the following keys:

To the left To the right

VT Ratio screen

VT Ratio Setting screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Current value

Press once.

The screen changes to the one for setting the parameter and the alterable digit blinks.

Setpoint

Using or ,

change the setpoint.

VT Ratio Setting screen

VT Ratio screen

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while

When proceeding to set the CT

ratio, press once and start from step Ratio.”

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the VT Ratio screen.

VT ratio setting completed.

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

3 in “Setting the CT

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

VT ratio

3-2

Setting

Type

Integral numeric

value

Setting Range (Details)

1 to 6000

Initial value

(Factory-set

Value)

IM 77C01E01-01E

Setting the CT Ratio

Operation

This section explains how to set the CT ratio by taking as an example the case when the CT ratio is changed from the initial value (1.00) to 10.00.

Operation

Measured Value screen

3.2 Setting the VT and CT Ratios

CT Ratio Setting screen

The alterable digit blinks.

Parameter Setting Operations

VT Ratio screen

CT Ratio screen

CT Ratio Setting screen

Hold down for at

least 3 seconds.

The parameter (VT ratio) appears.

Press once.

The parameter (CT ratio) appears.

Current value

Press once.

The screen changes to the one for setting the parameter and the decimal point blinks.

To move the decimal point, use the following keys:

Setpoint

To the left To the right

Press once to fix the position of the decimal point.

CT Ratio Setting screen

CT Ratio screen

Using or , change the setpoint.

To move to the digit to be changed, use the following keys:

To the left To the right

Press once to

blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the CT Ratio screen.

CT ratio setting completed.

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

CT ratio

NOTE

Set the VT and CT ratios so that the value of “secondary rated power  VT ratio  CT ratio” is smaller than 10 GW. If this value exceeds 10 GW, the updated VT or CT ratio will not be incorporated but revert to the current value before change.

IM 77C01E01-01E

Setting

Type

Floating-point

numeric

value

Setting Range (Details)

0.05 to 32000

Initial Value

(Factory-set

Value)

1.00

3-3

3.3 Setting the Integrated Low-cut Power

Operation

This section explains how to set the integrated low-cut power by taking as an example the case when the integrated low-cut power is changed from the initial value (0.05%) to 0.1%.

Operation

Measured Value screen

Integrated Low-cut Power Setting screen

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

VT Ratio screen

Integrated Low-cut Power screen

Integrated Low-cut Power Setting screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Press twice.

The parameter (integrated low-cut power) appears.

Current value

Press once.

The screen changes to the one for setting the parameter and the alterable digit blinks.

Integrated Low-cut Power screen

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Integrated Lowcut Power screen.

Integrated low-cut power setting completed.

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Integrated Low-cut Power Setting screen

3-4

Setpoint

Using or ,

change the setpoint.

To move to the digit to be changed, use the following keys:

To the left To the right

Press once to blink the setpoint.

IM 77C01E01-01E

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

Integrated low-cut power

Setting

Type

Fixed-point

numeric

value

3.3 Setting the Integrated Low-cut Power

Initial Value

Setting Range (Details)

0.05 to 20.00 (%)

(Factory-set

Value)

0.05

Integrated low-cut power

This parameter is used to prevent active power (regenerative power), reactive power (LEAD/LAG) and apparent power from being calculated as energy if they are smaller than the integrated low-cut power. Set this parameter as a percent (%) of the rated power.

Parameter Setting Operations

IM 77C01E01-01E

3-5

3.4 Setting RS-485 Communication Conditions

Operation

This section explains how to set RS-485 communication conditions by taking as an example the case when the protocol is changed from the initial value to Modbus/RTU.

Operation

Measured Value screen

Protocol Setting screen

The screen changes to the one for setting the parameter .

Setpoint

VT Ratio screen

RS-485 Communication Menu screen

Station Number screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Using or ,

show .

Press once.

The parameter (station number) appears.

Protocol Setting screen

Protocol screen

Using or ,

select the setpoint.

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Protocol screen.

Protocol setting completed.

To return to the RS-485 Communication

Menu screen,

press .

Protocol screen

3-6

Press once.

The parameter (protocol) appears.

Current value

Press once.

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Each press of cycles through the parameter options, as shown below.

Refer to “Parameter Setting Types and Ranges” on the next page to set other parameters in the same manner.

Baud rate Parity Stop bit Data length

IM 77C01E01-01E

NOTE

● The Modbus/TCP protocol can only be selected for a PR300 with the Ethernet communication function.

● If the protocol is set to Modbus/TCP, the station number, baud rate, stop bit, and data length setpoints are fixed as shown below. Station number = 01, Baud rate = 9600 bps, Stop bit = 1 bit, Data length = 8 bits

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

RS-485 communication menu

Station number 1 to 99

Protocol

Baud rate

(*3)

Parity

(*3)

Stop bit

Data length

*1 Modbus/TCP can be selected for a PR300 with the Ethernet communication function only. *2 When Modbus/RTU is selected for the protocol, select 8 for the data length. *3 When PR201 original is selected for the protocol, select NONE for the parity, 1 for the stop bit and 8 for the data

length.

(*2)(*3)

3.4 Setting RS-485 Communication Conditions

Setting

Type

Integral numeric value

Selection

Setting Range (Details)

Menu to shift to the parameters of RS485 communication

PC link without checksum PC link with checksum Modbus/ASCII Modbus/RTU Modbus/TCP PR201 original 2400 bps 9600 bps 19200 bps NONE EVEN ODD 1 bit 2 bits 8 bits 7 bits

(*1)

Parameter Setting Operations

Initial Value

(Factory-set

Value)

PC link

with

checksum

9600 bps

NONE

IM 77C01E01-01E

3-7

For the PR300 with Ethernet communication function only

Operation

3.5 Setting Ethernet Communication Conditions

This section explains how to set Ethernet communication conditions by taking as an example the case when the IP address is changed from the initial value to “192.168.1.2”. (Ethernet communication conditions can be set only when the protocol is set to Modbus/TCP. Refer to section 3.4.)

Operation

Measured Value screen

IP Address-4 Setting screen

The screen changes to the one for setting the parameter

VT Ratio screen

Ethernet Communication Menu screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Using or ,

show .

Ethernet Communication Menu screen appears only when the protocol is set to Modbus/TCP.

Press once.

IP Address-4 Setting screen

Parameter IP address

Setpoint

IP-1 IP-2 IP-3 IP-4

192.168. 1. 2

Using or , change the setpoint.

To move to the digit to be changed, use the following keys:

To the left To the right

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while the setpoint is blinking.

IP Address-1 screen

IP Address-4 screen

3-8

The parameter (IP address-1) appears.

Press three

Current value

times.

The parameter (IP address-4) appears.

The parameter options change as shown below.

Press once.

IP Address-4 screen

IP address setting completed.

To enable the parameter setting, execute step next page.

Each press of cycles through the parameter options, as shown below.

Refer to “Parameter Setting Types and Ranges” on the next page to set other parameters in the same manner.

Subnet mask-1 Subnet mask-2 Subnet mask-3 Subnet mask-4

Default gateway-4 Default gateway-3 Default gateway-2 Default gateway-1

Port number Ethernet setting switch

9 on the

IM 77C01E01-01E

3.5 Setting Ethernet Communication Conditions

Ethernet setting switch Ethernet setting switch

Set the Ethernet setting switch to ON to enable the new settings. When the settings have been updated, the switch is automatically set back to OFF.

Set the settings of parameter to

ON and press

twice.

The parameter settings have been updated.

NOTE

● When using Ethernet communication, set the RS-485 communication protocol to Modbus/TCP (see Section 3.4). To be able to update the Ethernet parameter settings, the Ethernet setting switch must be set to ON.

●

It takesabout 20 seconds to update the setting. Ethernet communication cannot be used during this time.

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

Ethernet communication menu

IP address-1

IP address-2

Setting

Type

Integral

numeric

value

Setting Range (Details)

Menu to shift to the parameters of Ethernet communication

0 to 255

To return to the Ethernet Communication Menu screen,

press .

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Initial Value

(Factory-set

Value)

192

168

Parameter Setting Operations

IP address-3

IP address-4

Subnet mask-1

Subnet mask-2

Subnet mask-3

Subnet mask-4

Default gateway-1

Default gateway-2

Default gateway-3

Default gateway-4

Port number

Ethernet setting switch

Integral

numeric

value

Integral

numeric

value

Integral

numeric

value

Selection

0 to 255

502, 1024 to 65535

ON OFF

255

502

IM 77C01E01-01E

3-9

For the PR300 with pulse output function only

Operation

3.6 Setting Pulse Output Conditions

This section explains how to set pulse output conditions by taking as an example the case when the ON pulse width is changed from the initial value to 100 ms.

Operation

Measured Value screen

ON Pulse Width screen

The parameter (ON pulse width) appears.

Current value

VT Ratio screen

Pulse Output Menu screen

Measurement Item for Pulse Output screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Using or ,

show .

Press once.

The parameter (measurement item for pulse output) appears.

ON Pulse Width Setting screen

Press once.

The screen changes to the one for setting the parameter and the alterable digit blinks.

Setpoint

Using or , change the setpoint.

To move to the digit to be changed, use the following keys:

To the left To the right

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Pulse Unit screen

3-10

Press once.

The parameter (pulse unit) appears.

Press once.

ON Pulse Width screen

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the ON Pulse Width screen.

ON pulse width setting completed.

To return to the Pulse Output Menu screen, press .

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

IM 77C01E01-01E

3.6 Setting Pulse Output Conditions

NOTE

If the pulse unit and ON pulse width do not satisfy the following conditional expression, the updated pulse unit setpoint or ON pulse width setpoint reverts to the value before change.

ON pulse width [ms] 

Pulse unit [kWh]  3600  1000

Primary rated power  1.2  2

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

Pulse output menu

Measurement item for pulse output

Pulse unit

ON pulse width

Setting

Type

Selection

Fixed-point

numeric

value

Integral numeric

value

Setting Range (Details)

Menu to shift to the parameters of pulse output

Active energy Regenerative energy LEAD reactive energy LAG reactive energy

Apparent energy

0.1 to 5000.0 k (/pulse)

10 to 1270 (ms) (changeable in increments of 10 ms)

Parameter Setting Operations

Initial Value

(Factory-set

Value)

Active energy

1.0

IM 77C01E01-01E

3-11

For the PR300 with analog output function only

Operation

3.7 Setting Analog Output Conditions

This section explains how to set analog output conditions by taking as an example the case when the measurement item for analog output is changed to the current-1 and lower limit of scaling to 0% from their respective initial values.

Operation

Measured Value screen

Measurement Item for Analog Output Setting screen

VT Ratio screen

Analog Output Menu screen

Measurement Item for Analog Output screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Using or ,

show .

Press once.

The parameter (measurement item for analog output) appears.

Measurement Item for Analog Output Setting screen

Measurement Item for Analog Output screen

Lower Limit of Scaling screen

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Measurement Item for Analog Output screen.

Measurement item for analog output setting completed.

Press once.

The parameter (lower limit of scaling) appears.

Measurement Item for Analog Output Setting screen

3-12

Current value

Press once.

The screen changes to the one for setting the parameter .

Setpoint

Using or ,

select the setpoint.

Lower Limit of Scaling Setting screen

Press once.

The screen changes to the one for setting the parameter .

To move to the digit to be changed, use the following keys:

To the left To the right

Using or , change the setpoint.

Press once.

IM 77C01E01-01E

3.7 Setting Analog Output Conditions

Lower Limit of Scaling Setting screen

Press once while

The setpoint is confirmed and the PR300 returns to the Lower Limit of Scalling screen.

the setpoint is blinking.

NOTE

If the upper and lower limits of scaling do not satisfy the following conditional expression, the updated upper or lower limit of scaling setpoint will not be incorporated but revert to the value before change.

Upper limit of scaling – Lower limit of scaling 50

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

Analog output menu

Measurement item for analog output

Lower limit of scaling

Upper limit of scaling

Lower Limit of Scaling screen

To change the upper limit of scaling, set a new limit using the parameter that follows.

Setting

Type

Menu to shift to the parameters of analog output

Selection

Active power Reactive power Apparent power Voltage-1 Voltage-2 Voltage-3 Current-1 Current-2 Current-3 Power factor Frequency

Fixed-point

numeric

value

Fixed-point

numeric

value

0.0 to 50.0 (%)

50.0 to 100.0 (%)

Lower limit of scaling setting completed.

To return to the Analog Output Menu screen, press .

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Setting Range (Details)

Parameter Setting Operations

Initial Value

(Factory-set

Value)

Active power

50.0

100.0

Relationship between Scale Values and Measurement Inputs (Example)

IM 77C01E01-01E

Active power

When setting output proportional to

-1000 to 1000 W

Scale values to be set

When setting output proportional to 0 to 1000 W

Scale values to be set

Output

-1000

Lower

limit

Output

50 100

Lower

limit

1000

100

Upper

limit

1000

Upper

limit

Reactive power

Output

(W)

-1000

(LEAD)

Lower

limit

Apparent power

Output

(W)

Lower

limit

Voltage

Output

0 1000

(var)

0100

(LAG)

Upper

limit

Current

Output

0100

1000

Upper

limit

(VA)

0100

Lower

limit

0100

Lower

limit

600

Upper

limit

Upper

limit

(V)

(A)

Power factor

Output

0.5

(LEAD)

0 100

Lower

limit

Frequency

Output

0100

Lower

limit

0.5

(LAG)

Upper

limit

Upper

limit

(Hz)

3-13

For the PR300 with demand measurement function only

Operation

3.8 Setting Demand Measurement Conditions

This section explains how to set demand measurement conditions by taking as an example the case when the demand alarm point is changed to 300 kW and demand alarm release function to manual release, from their respective initial values.

Operation

Measured Value screen

Demand Alarm Mask Time screen

The parameter (demand alarm mask time) appears.

VT Ratio screen

Demand Measurement Menu screen

Demand Power/Current screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Using or ,

show .

Press once.

The parameter (demand power/current) appears.

Demand Alarm Point screen

Demand Alarm Point Setting screen

Press once.

The parameter (demand alarm point) appears.

Current value

Press once.

The screen changes to the one for setting the parameter .

Setpoint

Using or , change the setpoint.

To move to the digit to be changed, use the following keys:

To the left To the right

Demand Period screen

3-14

Press once.

The parameter (demand period) appears.

Press once.

Demand Alarm Point Setting screen

Press once to blink the setpoint.

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Press once while the setpoint is blinking.

IM 77C01E01-01E

3.8 Setting Demand Measurement Conditions

Demand Alarm Point screen

Demand Alarm Release Function screen

Demand Alarm Release Function Setting screen

The setpoint is confirmed and the PR300 returns to the Demand Alarm Point screen.

Demand alarm point setting completed.

Press once.

The parameter (demand alarm release function) appears.

Press once.

The screen changes to the one for setting the parameter .

Using or , select the setpoint.

Demand Alarm Release Function Setting screen

Demand Alarm Release Function screen

Press once to blink the setpoint.

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Demand Alarm Release Function screen.

Demand alarm release function setting completed.

To return to the Demand Measurement

Menu screen, press .

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Parameter Setting Operations

NOTE

If the demand period and demand alarm mask time do not satisfy the following conditional expression, the updated demand period or demand alarm mask time will not be incorporated but revert to the value before change.

Demand alarm mask time  Demand period

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

Demand measurement menu

Demand power/current

Demand period

Demand alarm mask time

Demand alarm point

Demand alarm release function

Setting

Type

Selection

Integral numeric

value

Integral numeric

value

Integral numeric

value

Selection

Setting Range (Details)

Menu to shift to the parameters of demand measurement

Active power Current

1 to 60 (min) (Demand alarm mask time to 60) (min)

1 to 59 (min) (1 to demand period) (min)

1 to 1000 (kW): When active power is selected, or 1 to 1000 (A): When current is selected

Automatic release Manual release

Initial Value

(Factory-set

Value)

Active power

100

Automatic

release

IM 77C01E01-01E

3-15

3.9 Setting the Measured Value Display Pattern

Operation

This section explains how to set the measured value display pattern by taking as an example the case when the number of display patterns is changed to 3 and the display pattern-1 upper display to maximum demand value, from their respective initial values.

Operation

Number of Display Patterns

Measured Value screen

Setting screen

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

VT Ratio screen

Display Setting Menu screen

Number of Display Patterns screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Using or ,

show .

Press once.

Press twice.

The parameter (number of display patterns) appears.

Number of Display Patterns screen

Display Pattern-1 Upper Display screen

Display Pattern-1 Upper Display Setting screen

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Number of Display Patterns screen.

Number of display patterns setting completed.

Press once.

The parameter (display pattern-1 upper display) appears.

Press once.

The screen changes to the one for setting the parameter .

Number of Display Patterns Setting screen

3-16

Current value

Press once.

The screen changes to the one for setting the parameter .

Setpoint

Using or , select the setpoint.

Press once to blink the setpoint.

Display Pattern-1 Upper Display Setting screen

Using or , select the setpoint.

Press once to blink the setpoint.

Press once while the setpoint is blinking.

IM 77C01E01-01E

3.9 Setting the Measured Value Display Pattern

Display Pattern-1 Upper Display screen

The setpoint is confirmed and the PR300 returns to the Display Pattern-1 Upper Display screen.

Display pattern-1 upper display setting completed.

Press once.

Display Pattern-1 Middle Display screen

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

The parameter (display pattern-1 middle display) appears.

Refer to steps

8, 9

and 10 to also set other display patterns.

Display setting menu

Number of display patterns

Display pattern-1 upper display

Display pattern-1 middle display

Display pattern-1 lower display

Display pattern-2 upper display

Display pattern-2 middle display

Display pattern-2 lower display

Display pattern-3 upper display

Display pattern-3 middle display

Display pattern-3 lower display

Display pattern-4 upper display

Display pattern-4 middle display

Display pattern-4 lower display

Display Pattern-1 Lower Display screen

Setting

Type

Integral numeric

value

Selection

Setting Range (Details)

Menu to shift to the parameters of display setting

1 to 8

A measurement item can be selected from the following:

None Active energy Regenerative energy LEAD reactive energy LAG reactive energy Apparent energy Active power Reactive power Apparent power Voltage (phase switch inidication) Voltage-1 Voltage-2 Voltage-3 Current (phase switch inidication) Current-1 Current-2 Current-3 Power factor Frequency Optional active energy Demand value Maximum demand value

To return to the Display Setting

Menu screen, press .

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

Initial Value

(Factory-set

Value)

Current

(phase switch

inidication)

Voltage

(phase switch

inidication)

Active power

Reactive power

Power factor

Active energy

LEAD reactive

energy

Apparent

energy

Current-1

Current-2

Current-3

Parameter Setting Operations

IM 77C01E01-01E

- Continued to next page -

3-17

3.9 Setting the Measured Value Display Pattern

Parameter Setting Types and Ranges (Continued)

Parameter Symbol Parameter Name

Display pattern-5 upper display

Display pattern-5 middle display

Display pattern-5 lower display

Display pattern-6 upper display

Display pattern-6 middle display

Display pattern-6 lower display

Display pattern-7 upper display

Display pattern-7 middle display

Display pattern-7 lower display

Display pattern-8 upper display

Display pattern-8 middle display

Display pattern-8 lower display

Setting

Selection

Type

Setting Range (Details)

A measurement item can be selected from the following:

Initial Value

(Factory-set

Value)

Voltage-1

Voltage-2

Voltage-3

Current

(phase switch

inidication)

Voltage

(phase switch

inidication)

Frequency

Current

(phase switch

inidication)

Active power

Power factor

Active power

Maximum

demand value

Demand value

Number of Display Patterns and Individual Display Patterns

Allocate desired measurement items to the upper, middle and lower displays of the PR300, respectively, to define the display view as a single display pattern. It is possible to define a maximum of 8 patterns. For the number of display patterns, specify how many of these defined display patterns the PR300 should show.

NOTE

● As shown in the table below, some measurement items cannot be measured depending on the type of phase and wire system. Measurement items that cannot be measured cannot be selected as options for a display pattern.

● In the case of a three-phase four-wire system, the initial values of Display patterns-1 to 8 can all be shown on the PR300. For phase and wire systems other than a three-phase four-wire system, measurement items that cannot be measured are shown as “

Phase and wire

Measurement item

Current Current-1 Current-2 Current-3 Voltage-2 Voltage-3

system

(phase switch inidication)

*1 For a three-phase four-wire system (2.5 element), it is possible to set the following measurement items

only when the current is in a state of equilibrium: Current (phase switch indication), Current-1, Current-3, Reactive power, Apparent power, Power factor, LEAD reactive energy, LAG reactive energy, and Apparent energy.

Single-phase

two-wire system

–

✔

– – – –

Single-phase

three-wire system

✔

–

✔

–

Three-phase

three-wire system

✔

–

✔

–

✔

● The demand value and maximum demand value can only be selected for a PR300 with the demand

measuring function. For a PR300 without the demand measuring function, the initial values of demand value and maximum demand value are shown as “ ”.

”.

Three-phase

four-wire system

✔

✔: Measurable. –: Not measurable.

Three-phase four-wire

system (2.5 element)

✔

–

✔

–

✔

3-18

IM 77C01E01-01E

3.10 Setting the “Indicator-out” Mode and Locking

Operation

Parameters

Setting the Indicator-out Mode

This section explains how to set the indicator-out mode by taking as an example the case when the indicatorout mode is changed to ON and the indicator-out mode wait time to 5 min, from their respective initial values.

Operation

Measured Value screen

Indicator-out Mode Setting screen

To re-set the parameter:

Press any key other than

while all digits of the setpoint are blinking. The PR300 returns to the initial setting screen.

Parameter Setting Operations

VT Ratio screen

The parameter (VT ratio) appears.

Display Setting Menu screen

Indicator-out Mode screen

The parameter (Indicator-out mode) appears.

Current value

Indicator-out Mode Setting screen

The screen changes to the one for setting the parameter .

Setpoint

Hold down for at least 3 seconds.

Using or ,

show .

Press once.

Using or , select the setpoint.

Press once blink the setpoint.

Indicator-out Mode screen

Indicator-out Mode Wait Time screen

Indicator-out Mode Wait Time Setting screen

Indicator-out Mode Wait Time screen

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Indicator-out Mode screen.

Indicator-out mode setting completed.

Press once.

Parameter (indicatorout mode wait time) is displayed.

Press once.

The screen changes into a screen for setting parameter .

Using or , change the setpoint.

Press once to blink the setpoint.

Press once while

the setpoint is blinking.

The setpoint is confirmed and the PR300 returns to the Indicator-out Mode Wait Time screen.

Indicator-out mode wait time setting completed.

To return to the Display Setting Menu

screen, press .

To return to the Measured Value

screen, hold down .

If you do not operate any key for more than 5 minutes on the Parameter screen, the PR300 automatically returns to the Measured Value screen.

IM 77C01E01-01E

3-19

3.10 Setting the “Indicator-out” Mode and Locking Parameters

Operation

Parameter Setting Types and Ranges

Parameter Symbol Parameter Name

Display setting menu

Indicator-out mode

Indicator-out mode wait time

Indicator-out mode

The indicator-out mode is designed to turn off the PR300 display when no key operation is performed within the indicator-out mode wait time that has been set while measured values are on display. The PR300 switches to the Measured Value screen in about 5 minutes when no key operation is performed while the Parameter screen is on display. Then, the PR300 display turns off after the elapse of the indicator-out mode wait time from when the PR300 switched to the Measured Value screen. To turn on the PR300 display to show measured values during indicator-out mode, press any key.

Setting

Type

Selection

Integral

numeric

value

Locking and Unlocking Parameters

Executing the following operations locks or unlocks all parameters. (A parameter cannot be locked or unlocked individually.) If a parameter is locked, it will be impossible to shift to the Parameter Setting screen. Use the Parameter screen showing the current value or the Menu screen to lock or unlock parameters. Operations used on an individual parameter setting screen or on the Measured Value screen in an attempt to lock parameters will have no effect.

Unlocking ParametersLocking Parameters

Operation

Measured Value screen

Operation

Measured Value screen

Setting Range (Details)

Menu to shift to the parameters of display setting

ON OFF

1 to 60 (min)

Initial Value

(Factory-set

Value)

OFF

10 (min)

VT Ratio screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Simultaneously hold down and for at least 5

seconds.

The measured value display (middle display) first shows , then returns to the Parameter screen.

All parameters are locked now. Pressing will no longer switch the display to any parameter setting screen.

VT Ratio screen

Hold down for at least 3 seconds.

The parameter (VT ratio) appears.

Simultaneously hold down and for at least 5

seconds.

The measured value display (middle display) first shows , then returns to the Parameter screen.

All parameters are unlocked now.

3-20

IM 77C01E01-01E

Chapter 4 Operation for Display of Measurement Items and Measurement Method

4.1 Measurement Items

✔ : Measurable, – : Not measurable

Measurement items

Active energy (+) *1

Active energy (-) (regenerative energy) *1 LEAD reactive energy (-) *1

LAG reactive energy (+) *1

Apparent energy *1

Optional active energy *1

Active power

Instantaneous value

Maximum

value

Minimum

value

Reactive power

Instantaneous value

Maximum

value

Minimum

value

Apparent power

Instantaneous value

Maximum

value

Minimum

value

Voltage-1

Instantaneous value

Maximum

value

Minimum

value

Voltage-2

Instantaneous value

Maximum

value

Minimum

value

Voltage-3

Instantaneous value

Maximum

value

Minimum

value

Current-1

Instantaneous value

Maximum

value

Current-2

Instantaneous value

Maximum

value

Current-3

Instantaneous value

Maximum

value

Frequency

Instantaneous value

Maximum

value

Minimum

value

Power factor

Instantaneous value

Maximum

value

Minimum

value

Demand power *2

Maximum

value

Demand current-1 *2

Maximum

value

Demand current-2 *2

Maximum

value

Demand current-3 *2

Maximum

value

Single-phase

two-wire system

✔

–

✔

–

✔

–

Single-phase

three-wire system

✔

–

✔

–

✔

–

Three-phase

✔

–

✔

–

✔

–

✔

Three-phase

four-wire system

✔

Three-phase

four-wire system

(2.5 element)

✔

–

✔

–

✔

–

✔

Unit and

symbol

kWh/MWh

-kWh/-MWh

-kvarh/-Mvarh

kvarh/Mvarh

kVAh/MVAh

W/kW/MW

var/kvar/Mvar

VA/ kVA /MVA

V/kV

A/kA

COSø

W/kW/MW

A/kA

Operation for Display of Measurement Items and Measurement Method

*1: An integrated low-cut power can be set to the energy parameters listed in the table (refer to Section 3.3). *2: Either the demand power or demand current can be set as a measurement item.

NOTE

IM 77C01E01-01E

When the current is in a state of equilibrium, the three-phase four-wire system (2.5 element) can measure the following items: LEAD reactive energy, LAG reactive energy, Apparent energy, Reactive power, Apparent power, Current-1, Current-3, Power factor, Demand current-1, and Demand current-3.

4-1

4.2 Switching Display Pattern

According to Display patterns-1 to 8, the PR300 can change the measurement items to be assigned to the upper, middle, and lower displays (refer to Section 3.9, “Setting the Measured Value Display Pattern”). The procedure to change the display pattern and initial values are explained below.

Switching Display Pattern

Display pattern-1 Display pattern-2 Display pattern-n (up to 8)

The initial value is “Display pattern-1,” and the display pattern number will be incremented by 1 every time is pressed. After the number reaches n, it will return to 1.

Initial Values and Example Display Patterns

Initial value of the number of display patterns: 1 (Only display pattern-1 appears.) Initial value of each display pattern:

Display pattern-1 Display pattern-2 Display pattern-3 Display pattern-4

4-2

Upper

Current (phase switch indication)

display Middle

Voltage (phase switch indication)

display

Lower

Active power

display

Upper

display

Middle

display

Lower

display

Active power

Reactive power

Power factor

Upper

Active energy

display Middle

LEAD reactive energy

display

Lower

Apparent energy

display

Upper

display

Middle

display

Lower

display

Current-1

Current-2

Current-3

Display pattern-5 Display pattern-6 Display pattern-7 Display pattern-8

Upper

display Middle

display

Lower

display

Voltage-1

Voltage-2

Voltage-3

Upper

Current (phase switch indication)

display

Middle

Voltage (phase switch indication)

display

Lower

Frequency

display

Upper

Current (phase switch indication)

display Middle

Active power

display

Lower

Power factor

display

Upper

Active power

display

Middle

Maximum demand value

display

Lower

Demand value

display

As below, “NONE” appears in the display of a measurement item whose value cannot be displayed due to the specifications of the PR300.

IM 77C01E01-01E

4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values

Example Display and Measuring Ranges of Active Power (Regenerative Power)

“-” will always appear when the displayed value is a regenerative power value.

Supplementary unit (refer to the table on the right)

Active power

: Turns on while the maximum value is displayed. : Turns on while the minimum value is displayed.

Example Display and Measuring Ranges of Reactive Power

“-” will appear when the displayed value is a LEAD reactive power value.

Supplementary unit (refer to the table on the right)

Reactive power

: Turns on while the maximum value is displayed. : Turns on while the minimum value is displayed.

Secondary rated power  1.2  VT ratio  CT ratio

6 W to less than 100 W

100 W to less than 1 kW

1 kW to less than 10 kW

10 kW to less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW to less than 100 MW

100 MW to less than 1 GW

1 GW or greater

The following will appear when the input value is [secondary rated power  1.2  VT ratio  CT ratio] or more.

and the measured value blink alternately.

Secondary rated power  1.2  VT ratio  CT ratio

6 W to less than 100 W

100 W to less than 1 kW

1 kW to less than 10 kW

10 kW to less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW to less than 100 MW

100 MW to less than 1 GW

1 GW or greater

The following will appear when the input value is [secondary rated power  1.2  VT ratio  CT ratio] or more.

and the measured value blink alternately.

Measuring range

0.00 to 99.99 W

0.0 to 999.9 W

0 to 9999 W

0.00 to 99.99 kW

0.0 to 999.9 kW

0 to 9999 kW

0.00 to 99.99 MW

0.0 to 999.9 MW

0 to 9999 MW

Measuring range

0.00 to 99.99 var

0.0 to 999.9 var

0 to 9999 var

0.00 to 99.99 kvar

0.0 to 999.9 kvar

0 to 9999 kvar

0.00 to 99.99 Mvar

0.0 to 999.9 Mvar

0 to 9999 Mvar

Operation for Display of Measurement Items and Measurement Method

Example Display and Measuring Ranges of Apparent Power

Supplementary unit (refer to the table on the right)

Apparent power

IM 77C01E01-01E

: Turns on while the maximum value is displayed. : Turns on while the minimum value is displayed.

Secondary rated power  1.2  VT ratio  CT ratio

6 W to less than 100 W

100 W to less than 1 kW

1 kW to less than 10 kW

10 kW to less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW to less than 100 MW

100 MW to less than 1 GW

1 GW or greater

The following will appear when the input value is [secondary rated power  1.2  VT ratio  CT ratio] or more.

and the measured value blink alternately.

Measuring range

0.00 to 99.99 VA

0.0 to 999.9 VA

0 to 9999 VA

0.00 to 99.99 kVA

0.0 to 999.9 kVA

0 to 9999 kVA

0.00 to 99.99 MVA

0.0 to 999.9 MVA

0 to 9999 MVA

4-3

4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values

Example Display and Measuring Ranges of Voltage

Supplementary unit (refer to the table on the right)

Voltage-1

Voltage-2

Voltage-3

: Turns on while the maximum value is displayed. : Turns on while the minimum value is displayed.

Example Display and Measuring Ranges of Current

Supplementary unit (refer to the table on the right)

Current-1

Current-2

Current-3

Voltage range  1.2  VT ratio

100 V to less than 1 kV

1 kV to less than 10 kV

10 kV to less than 100 kV

100 kV to less than 1 MV

1 MV to less than 10 MV

The following will appear when the input value is less than [voltage range  0.1  VT ratio] or [voltage range  1.2  VT ratio] or more.

and the measured value blink alternately.

Current range  1.2  CT ratio

0.06 A to less than 10 A

10 A to less than 100 A

100 A to less than 1 kA

1 kA to less than 10 kA

10 kA to less than 100 kA

100 kA to less than 1 MA

The following will appear when the input value is [current range  1.2  CT ratio] or more.

and the measured value blink alternately.

Measuring range

0.0 to 999.9 V

0 to 9999 V

0.00 to 99.99 kV

0.0 to 999.9 kV

0 to 9999 kV

Measuring range

0.000 to 9.999 A

0.00 to 99.99 A

0.0 to 999.9 A

0 to 9999 A

0.00 to 99.99 kA

0.0 to 999.9 kA

: Turns on while the maximum value is displayed.

Example Display and Measuring Ranges of Power Factor

Symbol indicated when the value is LAG power factor.

Power factor

: Turns on while the maximum value is displayed. : Turns on while the minimum value is displayed.

The following will appear when the measurement is out of range:

Measuring range: (LEAD) 0.500 to 1 to 0.500 (LAG)

* When the power factor is 1, the symbols indicating LEAD and LAG power factors are not displayed.

Symbol indicated when the value is LEAD power factor.

and the measured value blink alternately.

4-4

IM 77C01E01-01E

4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values

Example Display and Measuring Ranges of Frequency

The frequency of Voltage-1 is displayed.

Frequency

: Turns on while the maximum value is displayed. : Turns on while the minimum value is displayed.

The following will appear when the measurement is out of range:

and the measured value blink alternately

Measuring range: 45.0 to 65.0 Hz

How to Switch between Instantaneous Value, Maximum Value, and Minimum Value

• For active power (regenerative power), reactive power, apparent power, voltage, power factor, and frequency, the instantaneous value, the maximum value, and the minimum value can be switched for display using the operation keys ( or ).

• For current, the instantaneous value and the maximum value can be switched for display also using operation keys.

• The maximum and minimum values being displayed are those after resetting the maximum/minimum value or after turning on the power.

Display of instantaneous value

Display of minimum value

Display of maximum value

Operation for Display of Measurement Items and Measurement Method

Instantaneous value

Minimum value

Maximum value

Minimum value

Instantaneous value

Maximum value

Minimum value

Maximum value

Instantaneous value

NOTE

Turn the PR300 off/on by the power supply or perform remote resetting via communication in order to reset the instantaneous, maximum, and minimum values of measurements.

IM 77C01E01-01E

4-5

4.4 Phase Switching for Voltage and Current

Using an operation key ( ) of the PR300, the user can switch the phase of voltage, current, and demand current (*1) for display.

• For this phase switching, “Voltage (phase switch indication),” “Current (phase switch indication),” and “Demand current (*1)” must be set to the display pattern, and those settings seen on the Measured

Value screen.

*1 Only the PR300 with the demand measuring function can handle demand current.

How to Switch the Phase for Single-phase Three-wire, Three-phase Three-wire and Three-phase Four-wire (2.5 element) Systems

Phase Indication lamps

Voltage-1

Current-1

Voltage-2 or Voltage-3

Current-2 or Current-3

How to Switch the Phase for Three-phase Four-wire System

Phase Indication lamps

Voltage-1

Current-1

Voltage-2

Current-2

How to Read the Phase Indication Lamp

Phase and wire system

Single-phase two-wire system

Single-phase three-wire system

Three-phase three-wire system

Three-phase four-wire system

(2.5 element)

Voltage

Voltage-1 Voltage-1 Voltage-2 Voltage-1 Voltage-3 Voltage-1 Voltage-2 Voltage-3 Voltage-1 Voltage-3

Phase indication lamp turning on

A,B,C

A A, B B, C A, B B, C

R,S,T

R R, S S, T R, S S, T

S T

Current

Current-1 Current-1 Current-2 Current-1 Current-3 Current-1 Current-2 Current-3 Current-1 Current-3

Voltage-3

Current-3

Phase indication lamp turning on

A,B,C

A A C A C A B C A C

R,S,T

R R T R T R S T R T

4-6

NOTE

● The phase indication lamps (“A,B,C” or “R,S,T”) chosen at the time of ordering are turned on. This setting cannot be changed after delivery.

● In the single-phase two-wire system, phase indication lamp “A” or “R” turns on. This setting cannot be changed.

● In the three-phase four-wire system (2.5 element), the current can be measured only when it is in a state of equilibrium.

IM 77C01E01-01E

4.5 Displaying Energy Values

This section explains the measuring range and display method of active energy, regenerative energy, LEAD reactive energy, LAG reactive energy, and apparent energy.

Example Display and Measuring Ranges of Active Energy and Regenerative Energy

“-” will always appear when the displayed value is a regenerative energy value.

Supplementary unit (refer to the table on the right)

Active energy

Regenerative

energy

Type

* For all the four types in the table, decimal places that

Example Display and Measuring Ranges of LEAD Reactive Energy and LAG Reactive Energy

“-” will appear when the displayed value is a LEAD reactive energy value.

Supplementary unit (refer to the table on the right)

LAG reactive

energy

LEAD reactive

energy

Type

* For all the four types in the table, decimal places that

Secondary rated power  VT ratio  CT ratio

Less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW or greater

Measuring range

0 to 99999 kWh

0.00 to 999.99 MWh

0.0 to 9999.9 MWh

0 to 99999 MWh

are not appearing can be displayed by key operation

(refer to “Operation for Energy Value Display” on the next page).

Secondary rated power  VT ratio  CT ratio

Less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW or greater

Measuring range

0 to 99999 kvarh

0.00 to 999.99 Mvarh

0.0 to 9999.9 Mvarh

0 to 99999 Mvarh

are not appearing can be displayed by key operation

(refer to “Operation for Energy Value Display” on the next page).

Operation for Display of Measurement Items and Measurement Method

Example Display and Measuring Ranges of Apparent Energy

Supplementary unit (refer to the table on the right)

Apparent

energy

Type

* For all the four types in the table, decimal places that

IM 77C01E01-01E

NOTE

When the power is below the integrated low-cut power, it is not integrated as energy.

Secondary rated power  VT ratio  CT ratio

Less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW or greater

Measuring range

0 to 99999 kVAh

0.00 to 999.99 MVAh

0.0 to 9999.9 MVAh

0 to 99999 MVAh

are not appearing can be displayed by key operation

(refer to “Operation for Energy Value Display” on the next page).

4-7

4.5 Displaying Energy Values

Operation for Energy Value Display

For all measurement ranges of active energy, regenerative energy, LEAD reactive energy, LAG reactive energy, and apparent energy, decimal places that are not appearing can be displayed by key operation.

Display

order

Type A

● The digits being displayed are in in the table below. The figures that are not highlighted are not displayed and not visible.

● Every time is pressed, the display order is incremented by

smallest digit is appearing, the display will return to the initial value (the display order returns to

● If there is no key entry for 60 minutes after shifting the displayed digits, the display will automatically return to the initial value (the display order returns to

1. If is pressed when the

1).

Display

order

Type B

Display

order

Type C

Display

order

Type D

As can be seen in the figures below, the energy value returns to 0 after reaching the maximum energy value.

4-8

Active power Regenerative power

Electric energy

Maximum energy

Time

Electric energy

Time

Maximum energy

IM 77C01E01-01E

Optional Integrating Function

The optional integrating function integrates the active power while the control signal for optional integration is activated (ON for activating and OFF for deactivating). The operation for this signal can be performed via communication or by digital input.

NOTE

● The control signal for optional integration of the PR300 with the demand measuring function can be controlled only via communication. It is not possible by digital input.

● The active power below the integrated low-cut power cannot be integrated.

● Once the control signal for optional integration is controlled via communication, communication is

the only means for controlling that signal until system reset* is performed. The same applies to control by digital input. * System reset can be performed by turning off/on the power supply for the PR300 or by executing

remote reset via communication.

● When the system is reset, the optional integrated value is reset to 0.

● If power failure occurs during integration, an optional integrated value is reset to 0.

Example operation of the control signal for optional integration via communication

The active power during this time period is integrated.

4.5 Displaying Energy Values

Operation for Display of Measurement Items and Measurement Method

Start command

Digital input ON

Digital input OFF

These control signals are invalid.

Stop command

Time

Data update

Example operation of the control signal for optional integration by digital input

The active power during this time period is integrated.

Digital input ON

Start command

Stop command

These control signals are invalid.

Digital input

OFF

Data update

Time

Digital input

Number of inputs: 1 Input signal: ON signal 4.5 to 25 V DC, OFF signal within 1 V DC

Maximum integrated value

99999 Wh (After the integrated value reaches this maximum value, it returns to “0.”)

Data update

When the control signal for optional integration is turned off and then turned on:

The displayed measured value is reset to 0, and integration starts. The integrated value before resetting (previous value) can be confirmed via communication.

When the control signal for optional integration is turned on for a while and turned off later:

The displayed measured value is the integrated value. This value display is retained until the control signal for optional integration is turned on again.

IM 77C01E01-01E

4-9

4.6 Resetting Measured Values

Operation

Resetting Maximum and Minimum Values

Operation

Measured Value screen

Simultaneously hold down

and for at

least 5 seconds.

Reset Item Confirmation screen

The Reset Item Confirmation screen appears, and the reset items blinks.

To stop resetting To change the reset items

Press any key other than while the reset items are blinking. The PR300 returns to the Reset Item Selection screen.

Press once.

Reset Item Selection screen

The Reset Item Selection screen appears.

Reset items

Resetting Energy Value

Operation

Measured Value screen

Display the reset items on the screen (refer to the figure on the left)

using or

and press once.

Simultaneously hold down

and for at least 5 seconds.

Measured Value screen

Reset Item Confirmation screen

The maximum and minimum values are reset, and the PR300 returns to the Measured Value

“RESET” appears for about 1 second, then a measured value appears.

(“RESET” will not appear if returning to the screen not showing the maximum or minimum value after resetting.)

To return to the Measured Value screen without resetting, refer to “Canceling Reset Item Selection” on the next page.

The Reset Item Confirmation screen appears, and the reset items blinks.

To stop resetting To change the reset items

Press any key other than while the reset items are blinking. The PR300 returns to the Reset Item Selection screen.

Press once.

Reset Item Selection screen

4-10

The Reset Item Selection screen appears.

Reset items

Display the reset items on the screen (refer to the figure on the left)

using or

and press once.

Measured Value screen

The energy value is reset, and the PR300 returns to the Measured Value screen.

“RESET” appears for about 1 second, then a measured value appears.

(“RESET” will not appear if returning to the screen not showing the energy value after resetting.)

To return to the Measured Value screen without resetting, refer to “Canceling Reset Item Selection” on the next page.

IM 77C01E01-01E

4.6 Resetting Measured Values

Operation

Canceling Reset Item Selection (Returning to the Measured Value screen without resetting)

When the screen moves to the Reset Item Selection screen from the Measured Value screen, in order to return to the Measured Value screen without resetting a measured value, carry out the following operations.

Operation

Reset Item Selection screen

Reset Item Confirmation screen

The Reset Item Confirmation screen appears, and the reset item blinks.

On the Reset Item Selection

screen, press or

to bring up

and press

once.

Measured Value screen

The measured value is not reset, and the PR300 returns to the Measured Value screen.

Operation for Display of Measurement Items and Measurement Method

Reset Items and Details

Reset Item Symbol

Press once.

Reset Item Names Details

Maximum/minimum value reset

Energy value reset

Cancellation

The maximum/minimum values of active power, regenerative power, reactive power, apparent power, voltage, power factor, and frequency are reset to the current value. The maximum value of current is reset to the current value.

The values of active energy, regenerative energy, LEAD reactive energy, LAG reactive energy, and apparent energy are reset to “0.”

Resetting is not performed. The PR300 returns to the Measured Value screen from the Reset Item Selection screen.

IM 77C01E01-01E

4-11

4.7 Demand Measurement (Optional Measuring Function)

The PR300 (with the demand measuring function) can measure the average power or current during the set demand period. This section explains the example display of measured value, measuring range, measurement operation, and example measurement. For setting conditions related to the demand measurement such as demand period, refer to Section 3.8, “Setting Demand Measurement Conditions.”

Example Demand Display and Measuring Ranges

Demand power

Turns on during demand measurement Turns on during demand alarm

Supplementary unit (refer to the table on the right)

Demand power

Turns on while the maximum value is displayed

Turns on during demand measurement

Start/stop of demand measurement and alarm release

Secondary rated power  1.2  VT ratio  CT ratio

6 W to less than 100 W

100 W to less than 1 kW

1 kW to less than 10 kW

10 kW to less than 100 kW

100 kW to less than 1 MW

1 MW to less than 10 MW

10 MW to less than 100 MW

100 MW to less than 1 GW

1 GW or greater

Measuring range

0.00 to 99.99 W

0.0 to 999.9 W

0 to 9999 W

0.00 to 99.99 kW

0.0 to 999.9 kW

0 to 9999 kW

0.00 to 99.99 MW

0.0 to 999.9 MW

0 to 9999 MW

Demand current

Phase indication lamp

The phase of the demand current being measured can be switched for display.

Demand Measurement Procedure

Equation: (Pt - Ps)  (60 minutes  60 seconds  t)

Pt: Current integrated value Ps: Integrated value at the beginning of the demand period t: Demand elapsed time (data update period: 10 seconds)

Start demand measurement

Demand

period

Turns on during demand measurement Turns on during demand alarm

Supplementary unit (refer to the table on the right)

Demand current

Turns on while the maximum value is displayed

Turns on during demand measurement

Start/stop of demand measurement and alarm release

Current range  1.2  CT ratio

0.06 A to less than 10 A

10 A to less than 100 A

100 A to less than 1 kA

1 kA to less than 10 kA

10 kA to less than 100 kA

100 kA to less than 1 MA

Measuring range

0.000 to 9.999 A

0.00 to 99.99 A

0.0 to 999.9 A

0 to 9999 A

0.00 to 99.99 kA

0.0 to 999.9 kA

Stop demand measurement

4-12

Average power (current) update

Demand measuring time (while the maximum demand value is retained)

IM 77C01E01-01E

4.7 Demand Measurement (Optional Measuring Function)

Operation

Operation for Demand Measurement

Demand measurement can be started and stopped by the operation key ( ) or via communication. This section only explains control by the operation key (for operation via communication, refer to the PR300 Communication Interface User’s Manual: IM77C01E01-10E). In the demand measurement mode, either the demand power or the demand current can be measured. To set either of these, refer to Section 3.8, “Setting Demand Measurement Conditions.”

Start demand measurement Stop demand measurement

Operation

Measured Value screen

Maximum demand value

Demand value

Operation

Measured Value screen

During demand power or current measurement

Operation for Display of Measurement Items and Measurement Method

Measured Value screen

NOTE

● Once the operation key is used for control to start and stop demand measurement, it is the only means for controlling until system reset* is performed. The same applies to control via communication. * System reset can be performed by turning off/on the power supply for the PR300 or by executing

remote reset via communication.

● When the system is reset, the measured values of demand, maximum demand, and demand alarm status are reset to 0.

● If power failure occurs during measurement, the measured values of demand, maximum demand, and demand alarm status are reset to 0.

Hold down for at least 3 seconds.

Demand measurement starts.

Turns on during demand measurement.

The measured value is updated every ten seconds.

Measured Value screen

Hold down for at least 3 seconds.

Demand measurement stops.

Does not turn on when demand is not measured.

IM 77C01E01-01E

Example operation to start/stop demand measurement

The demand in this

period is measured.

Start StartStop Stop

Communication Communication

Start

command

These control signals are invalid.

Stop

command

Data

update

Start

command

These control signals are invalid.

The demand in this

period is measured.

Stop

command

Data

update

This control signal is valid.

Start

command

Communication

System reset

Time

4-13

4.7 Demand Measurement (Optional Measuring Function)

Demand Alarm

Demand alarm output

Function: When the set demand alarm point is exceeded, an alarm is output. Output signal: Open collector Output capacity: 30 V DC, 200 mA

Demand alarm release function

Automatic release: When the demand value falls below the demand alarm point, the alarm is canceled. Manual release: The state of the alarm is maintained even if the demand value falls below the

demand alarm point. It is canceled via communication or by digital input or the operation key.

Digital input Number of inputs: 1

ON signal: 4.5 to 25 V DC OFF signal: within 1 V DC

Demand alarm mask time

The demand alarm mask time is the time between the beginning of the demand period and the set time, during which a demand alarm is not recognized.

Example Demand Measurement

(update interval: 10 seconds, times of measurement: 192)

Demand period:

(kW)

500

400

300

200

100

turns on during the demand alarm.

10 minutes

Demand alarm mask time

010 20 3230

When the demand alarm release function is set to “Automatic release,” the alarm is automatically canceled when the demand value falls below the alarm point.

Demand measuring time: 32 minutes

Demand period:

10 minutes

Demand alarm output (open collector)

In conjunction with the demand alarm lamp, the demand alarm output keeps sending an alarm until cancellation.

Demand period:

Maximum demand value

To manually cancel the alarm,

press once or perform the cancellation procedure via communication.

The alarm can be canceled by the operation key or via communication regardless of the status of the start/stop operation.

10 minutes

Time (min)

Does not turn on in the demand alarm mask time.

Demand power Active power (kW)

Active energy (kWh)

Demand alarm point

4-14

Maximum demand value

The maximum demand value is the maximum value in the demand measuring time. This value is retained until system reset or start of the next demand measurement.

IM 77C01E01-01E

Chapter 5 Troubleshooting

5.1 Error Display and Recommended Response

Failure at the Time of Turning on the Power and during Operation

Error display Status

Off

Phase and

wire system

lamp

Normal

action

Upper display

of measured

value display

Power

lamp

Unstable Off Off

Errors during Operation

Error display Status

Phase and

wire system

lamp

Normal

action

Upper display

of measured

value display

blinking

Power

lamp

Communi

-cation lamp

Normal

action

Communi

-cation lamp

Normal

action

Pulse

lamp

Off

Normal

action

Off

Pulse

lamp

Normal

action

Type of fault

RAM error

ROM error

System data fault

Calibration data fault

Parameter fault

Backup fault

EEPROM error

ADC error

Type of fault

Measured input error

Power

calculation

Disabled

Normal

action

Disabled

Power

calculation

Normal

action

cation

action

cation

action

Pulse output

(contact

Normal

action

Pulse output

(contact

Normal

point)

Analog

output

Normal

action

Analog

output

Normal

action

Demand

alarm

Normal

action

DisabledDisabledDisabled

Demand

alarm

Normal

action

Communi-

Disabled Disabled Disabled Disabled

Normal

Communi-

Normal

Recommended

response

Request repair.

Recommended

response

Confirm the input.

Troubleshooting

Normal action

Blinks at intervals of 125 milliseconds.

Communication error

Errors at the Measured input error

Measurment items Active power Reactive power Apparent power Voltage

Current

Power factor

Frequency

Measured input error conditions

120% or more of “secondary rated power  VT ratio  CT ratio”

120% or more of “voltage range  VT ratio” Less than 10% of “voltage range  VT ratio”

120% or more of “current range  CT ratio”

Out of the measuring range (LEAD 0.5 to 1 to LAG 0.5)

Out of the measuring range (45 to 65 Hz)

Errors at the Time of Setting Parameters

Example The setpoint is out of the range.

Error display

the display.

Error display

and the measured value

blink alternately

and the setpoint blink alternately on

The product is restored when a normal frame is received.

Recommended response

The error is cleared by inputting a measured value less than 120%.

The error is cleared by inputting a measured value 10% or more.

The error is cleared by inputting a measured value less than 120%.

The error is cleared by inputting a measured value within the measuring range.

Recommended response

The error is cleared by setting a value within the range.

IM 77C01E01-01E

5-1

5.2 Maintenance

Cleaning

The front panel and operation keys should be gently wiped with a dry cloth.

NOTE

Do not use alcohol, benzine, or any other solvents.

Request for Repair in the Case of a Failure

• In the case of a failure, the failed product is to be exchanged for a replacement. We will accept the request for repair for a period of seven years from the date of the purchase.

• The parameter settings set to the failed product cannot be restored for a replacement. (Record the parameter settings of the PR300 on MEMO column in Appendix 4, “Parameter List” of this manual.)

• Return the failed product with the accessories in the package supplied at delivery.

In the case of a failure, check the following and contact the sales representative from which you purchased the product.

1. Serial number (shown in “NO.” on the nameplate)

2. Failed state and error display

5-2

IM 77C01E01-01E

Appendix

Appendix 1 Specifications of PR300

Measuring Function

Active energy (regenerative energy)

Reactive energy LAG and LEAD reactive power up to present are integrated and output in units of kvarh or

Apparent energy Apparent power up to present is integrated and output in units of kVAh or MVAh (only kVAh in

Optional active energy

Active power (regenerative power)

Apparent power The present apparent power is output in units of VA, kVA, or MVA.

Reactive power The present reactive power is output in units of var, kvar, or Mvar. The value of LEAD reactive

Power factor The present LEAD power factor is output as a value with a “–” sign. The present LAG power

Frequency The frequency of the voltage line input to Voltage-1 is output in units of Hz.

Demand The average power or the average current in the set demand period is measured

The active power up to present is integrated, and the integrated value is output in units of kWh or MWh (only kWh in the communication mode). The sign of integrated values of regenerative power is “–,” and they are output as different data.

Mvarh (only kvarh in the communication mode). The signs of LAG reactive power and LEAD reactive power are “+” and “–,” respectively.

the communication mode).

While the control signal for optional integration is turned on, the active power is integrated and output in units of Wh. The control signal for optional integration is turned on via communication or by digital input.

The present active power is output in units of W, kW, or MW. The sign of the value of regenerative power is always "–."

Minimum resolution: 0.1 W (The minimum display resolution is the least significant

value of [primary rated power

Maximum/minimum values They are calculated in the range of

Minimum resolution

0.1 VA (The minimum display resolution is the least significant digit of [(primary rated power

Maximum/minimum values They are calculated in the range of 0 to [(primary rated power

power is output with a “–” sign. The value of LAG reactive power is output without a positive sign. (The signs of LEAD/LAG calculates according to the phase difference between V1 and I1.)

Minimum resolution 0.1 var Maximum value

It is calculated in the range between 0 and [(primary rated power (whichever is larger of the LEAD or LAG value).

Minimum value It is calculated in the range between 0 and [(primary rated power (whichever is smaller of the LEAD or LAG value).

factor is output as a value without a positive sign (a power factor is an rms value. The signs of LEAD/LAG calculates according to the phase difference between V1 and I1.).

Minimum resolution 0.001 Maximum value

It is calculated in the range between 0 and [(rated value)  1.2] (whichever is larger of the LEAD or LAG value).

Minimum value It is calculated in the range between 0 and [(rated value)  1.2] (whichever is smaller of the LEAD or LAG value).

Minimum resolution 0.1 Hz

(refer to “3.8 Setting Demand Measurement Conditions“ and “4.7 Demand Measurement”). * Primary rated power= secondary rated power  VT ratio  CT ratio

(Secondary rated power is the rated power of PR300.)

[– primary rated power

(*)

 0.001].)

(*)

 0.001])

(*)

 1.2] to [primary rated power (*)  1.2].

(*)

)  1.2].

(*)

)  1.2]

(*)

)  1.2]

Appendix

IM 77C01E01-01E

A-1

Appendix 1 Specifications of PR300

Power Items and Equations

Phase and wire system

Single-phase two-wire system

Single-phase three-wire system

Three-phase three-wire system

Three-phase four-wire system

Three-phase four-wire system (2.5 element)

* For distorted wave input, there may be differences between the PR300 and a measuring instrument that uses a different measurement principle.

Apparent Power

VA = V×A

VAi = Vi×Ai

i = 1, 2 ΣVA = VA1+VA2

VAi = Vi×Ai

i = 1, 3 ΣVA = 3/2(VA1+VA3)

VAi = Vi×Ai

i = 1, 2, 3 ΣVA = VA1+VA2+VA3

VAi = Vi×Ai

i = 1, 3 ΣVA = 3/2(VA1+VA3)

Input Specifications

Reactive Power

(without using reactive power meter method)

Power Factor

Q = ((VA)2−P2)

Qi = ((VAi)

i= 1, 2 ΣQ=Q1+Q2

Qi = ((VAi)2−Pi2)

i=1, 3 ΣQ=Q1+Q3

−Pi2)

ΣP/ΣVA

(without using reactive power meter method)

Qi = ((VAi)2−Pi2)

i=1, 2, 3 ΣQ=Q1+Q2+Q3

Qi= (

i=1, 3 ΣQ=Q1+Q3

(VAi)2−Pi2)

3/2

(V and A are rms values.)

Phase and wire system

Universal three-phase three-wire system (switch the setting from single-phase two-wire system, single-phase three-wire system, or three-phase three-wire system)

Universal three-phase four-wire system (switch the setting from single-phase two-wire system, single-phase three-wire system, three-phase three-wire system, or three-phase four-wire system)

Three-phase four-wire system (2.5 element) Frequency 45 to 65Hz Rated input voltage 120 V; voltage range: 150 V

240 V; voltage range: 300 V

480 V; voltage range: 600 V Allowable input voltage

Within the voltage range

(*)

: 900kV

(*)

: 1800kV

(*)

: 3600kV

Rated input current 1 A; current range: 1 A (fixed): 32kA

5 A; current range: 5 A (fixed): 160kA Allowable input current

1.2 times the current range (continuous); twice the current range (10 seconds); 10 times the

(***)

(**)

*: The setting of the voltage range can be changed.

(**)

**: The primary voltage of VT.

(***)

***: The primary current of CT.

current range (3 seconds) Rated input power and measuring range (when VT and CT are used, their respective secondary values)

Single-phase two-wire system Single-phase three-wire system

Input (AC)

120V/1A 120V/5A 240V/1A 240V/5A 480V/1A 480V/5A

Rated power

–120 to 120W

100W

–600 to 600W

500W

–240 to 240W

200W

–1200 to 1200W

1000W

–480 to 480W

400W

–2400 to 2400W

2000W

Input

measuring

range

Approximate consumed VA

Voltage

0.2VA

0.4VA

0.8VA

Current

0.2VA

Input

(AC)

240V/1A 240V/5A

Rated power

200W

1000W

Input

measuring

range

–240 to 240W –1200 to 1200W

Approximate consumed VA

Voltage

0.2VA/ phase

Three-phase three-wire system Three-phase four-wire system

Input (AC)

120V/1A 120V/5A 240V/1A 240V/5A 480V/1A 480V/5A

Rated power

–240 to 240W

200W

–1200 to 1200W

1000W

–480 to 480W

400W

–2400 to 2400W

2000W

–960 to 960W

800W

–4800 to 4800W

4000W

Input

measuring

range

Approximate consumed VA

Voltage

0.2VA/ phase

0.4VA/ phase

0.8VA/ phase

Current

0.2VA/ phase

Input

(AC)

Rated power

120V/1A

120V/5A 240V/1A

240V/5A 480V/1A

480V/5A

Input specification of 1A AC is not available for 2.5 element.

300W

1500W

600W 3000W 1200W 6000W

Input

measuring

range

–360 to 360W –1800 to 1800W –720 to 720W –3600 to 3600W –1440 to 1440W –7200 to 7200W

Approximate consumed VA

Voltage

0.2VA/ phase

0.4VA/ phase

0.8VA/ phase

When VT and CT are used, the input measuring range of the primary input power is smaller than 10 GW, and the value calculated by the following equation is within the input measuring range above. Input measuring range (W) =

Primary input power (W)

VT ratio  CT ratio

Current

0.2VA/ phase

Current

0.2VA/

phase

A-2

IM 77C01E01-01E

Digital Input Specifications

It is used for control signals for optional integration or demand alarm release.

Control signal for optional integration: Starts and stops measurement of optional active energy.

Demand alarm release (with demand measuring function): Releases demand alarm. Number of inputs 1 Input signal Voltage signal; ON signal: 4.5 to 25 V DC; OFF signal: within 1 V DC Minimum ON time 50 ms (Note 1) The control signal for optional integration can be controlled via communication. Once it is

controlled by digital input, it is the only means for controlling until the system is reset. System

reset can be performed via communication or by turning off/on of the power of the PR300. (Note 2) In the PR300 with the demand measuring function, digital input can be used only to cancel the

demand alarm and cannot be used for control signals for optional integration.

Analog Output Specifications (additional output function)

The measured value is converted into the direct current signal for outputting. Measurement item for output

One of active power, reactive power, apparent power, voltage-1, voltage-2, voltage-3, current-1,

current-2, current-3, power factor, and frequency Output signal 4 to 20 mA DC Output accuracy Measurement accuracy of measurement item for output +(0.5% of F.S.) Allowable load resistance

0 to 600  Response speed 2 seconds or less (until 1% of the final value is reached) Setting item Selection of measurement item for output, and lower, and upper limits of scaling Setting range of lower/upper limits of scaling according to measurement item for output

Active power –rated power (W) to rated power (W)

Reactive power –rated power (var) to rated power (var)

Apparent power 0 to rated power (VA)

Voltage-1 to 3 0 to voltage range (V)

Current-1 to 3 0 to current range (A)

Power factor (LEAD) 0.5 to 1 to (LAG) 0.5

Frequency 45 to 65 (Hz)

Appendix 1 Specifications of PR300

Appendix

Pulse Output Specifications (additional output function)

The pulse proportional to the energy is output. Measurement item for output

One of active energy, regenerative energy, LEAD reactive energy, LAG reactive energy, and

apparent energy Number of outputs 1 Output signal Open collector Contact capacity 30 V DC, 200 mA Pulse unit 0.1 to 5000.0 kWh/pulse (changeable in increments of 100 Wh) Setting item Measurement items for output, pulse unit, and ON pulse width ON pulse width The ON time of the output pulse is shown.

Setting range: 10 to 1270 ms (changeable in increments of 10 ms)

Setting should be made not to exceed the value of the maximum ON pulse width calculated by

the following equation:

Maximum ON pulse width (ms) =

Pulse unit [kWh/pulse]  3600  1000

Secondary rated power [W]  VT ratio  CT ratio  1.2  2

The pulse unit of reactive energy is kvarh/pulse, and that of apparent energy is kVAh/pulse.

IM 77C01E01-01E

A-3

Appendix 1 Specifications of PR300

Demand Alarm Output Specifications (optional measuring function)

When the demand measurement value exceeds the set demand alarm point, an alarm is triggered. Output signal Open collector Contact capacity 30 V DC, 200 mA Set alarm range 1 to 1000 kW (during demand power measurement); 1 to 1000 A (during demand current measurement) Alarm release function

Automatic release:When the measured value falls below the demand alarm point during alarm

Manual release: Used to keep the alarm turned on or to cancel it by digital input or the

* The demand alarm mask time can be set for the PR300.

The demand alarm mask time is the time between the beginning of the demand period and the

set time, during which an alarm is not recognized.

Allowable range of set time: 1 minute to demand period

output, the alarm is canceled.

operation key, or via communication.

Communication Specifications

RS-485 communication

Via RS-485 communication, various measured values are read, and values are written to

various parameters using the command/response method.

(Example)

Station number 01 Station number 02 Station number 31

Protocol PC link (without checksum), PC link (with checksum), Modbus/ASCII, and

Modbus/RTU

Transmission distance

Approximately 1.2 km maximum (with 24AWG twisted-pair cable(s))

Connection method

Multi-drop connection (a maximum of 32 units including a higher-level device)

Station number 01 to 99 (maximum number of units to be connected: 31 [number of units

that can be connected to a PC etc.]) (recommended value: 01 to 31)

Transmission method

Half-duplex communication

Synchronization

Start-stop synchronization Baud rate 19200/9600/2400 bps Xon/Xoff control None Data format Data length 8 bits, 7 bits

Parity None, even, odd

Stop bit 1 bit, 2 bits

Maximum communication distance: 1.2 km Maximum number of connectable slave stations: 31

A-4

IM 77C01E01-01E

Appendix 1 Specifications of PR300

Example of connection diagram

Ethernet communication

Via Ethernet communication, various measured values are read, and values are written to various parameters using the command/response method.

Maximum distance: about 1.2 km (31 units maximum)

RS-232C/RS-485

converter

(Aⴚ)

(Bⴙ)

(SG)

RS-232C straight cable

<Note> For RS-485 communication, the PR300 employs the two-wire system. SG: Connection to Terminal SG is made to adjust the signal level of the RS-485 communication line. FG: For noise protection, a shield line must be connected to all wires in the RS-485 communication line and grounded

at one location. Use UL Listed RS-232C/RS-485 converter if the converter has AC/DC power supply input; this is optional for converters supplied by a Limited Power Source with input voltages less than 30 V AC or 60 V DC and which are separated from mains by double or reinforced insulation.

120  external

PR300 PR300 PR300

(Bⴙ)(Aⴚ)(Bⴙ)(Aⴚ)

(SG)(SG)

RS-485RS-485RS-485

(FG)

(Example)

PC IP address [192.168.1.1]

HUB

Ethernet

120  (built-in)

(Aⴚ)

(TERM)

(Bⴙ)

Terminator

(SG)

Appendix

LAN connection

Station number 01

IP address [192.168.1.2]

Station number 01

IP address [192.168.1.3]

Station number 01

IP address [192.168.1.4]

Station number 01

IP address [192.168.1.5]

Connectable to an IEEE802.3-compliant network (10BASE-T/100BASE-TX).

Higher-level device (PC etc.)

Application layer

Transport layer

Network layer

Data link layer

Physical layer

Communication specifications

MODBUS/TCP

TCP, UDP

IP, ICMP, ARP

Ethernet

10BASE-T/100BASE-TX

Protocol Modbus/TCP Access control CSMA/CD Baud rate 10Mbps/100Mbps Maximum segment length

100m (between HUB and module)

Maximum connection configuration Cascade 4 segments maximum (10BASE-T)

2 segments maximum (100BASE-TX) (number of HUBs that can be cascade connected)

IP address The IP address can be set using the operation keys on the front side of the PR300.

IM 77C01E01-01E

A-5

Appendix 1 Specifications of PR300

Modbus/TCP function

Code 03 06 08 16

Overview of Modbus/TCP protocol

Ethernet - Serial gateway function Equipped with an Ethernet communication connector and an RS-485 communication terminal, the PR300 receives a Modbus/TCP command from Ethernet and relays it to the RS-485 communication terminal. The PR300 allows connection to RS-485 serial communication devices (Modbus/RTU protocol) via the network.

RS-485 communication

Protocol Baud rate Parity Stop bit Data length

Function Reads data from multiple D registers Writes data into D register Performs loopback test Writes data into multiple D registers

The structure of the Modbus/TCP protocol is as follows:

MBAP Header Function code Data

The Simple Protocol Data Unit (PDU) is the same as Modbus/RTU (Modbus protocol via serial communication).

The Modbus Application Protocol Header (MBAP Header) is made of the following seven bytes:

Byte No

Description0Transaction ID

(Example)

Modbus/RTU 9600bps

None, even, odd

Ethernet

1 bit 8 bits

RS-485 connection

Description Capable of reading data from up to 64 registers continuously. Capable of writing data into one resiter. Capable of performing a communication test. Capable of writing data into up to 32 registers continuously.

PDU

Protocol ID

Number of bytes

Higher-level device IP address [192.168.1.1] (arbitrary)

10BASE-T/100BASE-TX

PR300 (with Ethernet communication function)

Station number 01 (fixed) IP address [192.168.1.2] (arbitrary)

Unit ID

Standard Performance

Accuracy rating

Calculation accuracy The value is calculated to 1 digit from the measured value for reactive energy, apparent

Backup upon power failure

RS-485 serial communication device Power monitor of POWERCERT Series Digital indicating controller of GREEN Series Signal conditioner of JUXTA Series

Station number 02 (arbitrary)

Station number 10 (arbitrary)

(Note) If Ethernet communication is used, the RS-485 communication interface is

used specifically for the Ethernet-serial gateway function. Therefore, it is not possible for a higher-level device such as a PC to access the PR300 via the RS-485 communication interface.

Active energy/optional active energy (Wh)

0.5% (EN60687 accuracy: Class 0.5 or equivalent) Active power (W) 0.5% of F.S. Voltage (V) 0.25% of F.S. (voltage rms) Current (A) 0.25% of F.S. (current rms) Frequency (Hz) 0.5Hz Demand 0.5%

energy, reactive power, apparent power, power factor, or current.* * Current is only for the 2.5-element measurement.

The last integrated values obtained immediately before the power failure are held for active energy, regenerative energy, reactive energy, and apparent energy.

A-6

IM 77C01E01-01E

Appendix 1 Specifications of PR300

Insulation resistance Between each of the voltage input, current input, power, ground, digital input, pulse output,

Withstand voltage Between each of the voltage input, current input, power, and ground terminals: 2500 V AC for 1

Impulse withstand voltage

Effects of magnetic field Effects of changes in ambient temperature

Effects of power supply voltage variations

Effects of input frequency

Power supply 100 - 240 V AC 10% (50/60 Hz) or 130 - 300 V DC 15% Power consumption AC drive 10 VA maximum

analog output, RS-485 communication output, Ethernet communication output, and alarm output terminals: 100 M minimum (at 500 V DC)

minute Between (the voltage input, current input, power, and ground terminals) and the digital input,

pulse output, analog output, alarm output, RS-485 communication output, and Ethernet communication output terminals: 2500 V AC for 1 minute

Between each of the digital intput, pulse output, analog output, alarm output, and (RS-485 communication output, Ethernet communication output) terminals: 1000 V AC for 1 minute

Between the RS-485 communication output and Ethernet communication output terminals: 500 V AC for 1 minute

Between all of the voltage input, current input, and power terminals and the ground terminal Between all of the output and ground terminals and all of the voltage and current input terminals: 6 kV (1.2/50 µs), 10 times for positive and negative

400 A/m or less Active power: ±0.5% of F.S., Voltage: ±0.25% of F.S.

±0.03%/°C for a temperature change rate of 10°C/h or less (when 0.05In  I  Imax and power factor = 1) ±0.05%/°C for a temperature change rate of 10°C/h or less (when 0.1In  I  Imax and power factor = LAG0.5)

In: rated current; I: present current input

Active power: ±0.25%, Voltage/Current: ±0.125% (for variations within the power supply operating range (when 0.01In and power factor = 1)) In: rated current

Active power: ±0.25%, Voltage/Current: ±0.125% (for variations of 45 to 65 Hz)

DC drive 5 W maximum

Appendix

Safety and EMC Standards

Safety standards Compliant with

UL61010-1 CAN/CSA C22.2 No.61010-1-04 (C-UL Listed)

Measurement category: 600V CAT.III

Measurement

Environmental Conditions

Normal operating conditions

Effect on operating conditions

Transport and storage conditions

Mounting and Shape

Materials Casing Polycarbonate resin (PC), UL94 V-0

Mounting method Panel mounting Connection Method M3 screws for terminal connections (analog output, pulse output, demand alarm output, digital

External Dimensions (including a terminal cover)

Weight Approx. 600 g (when accessories such as mounting bracket are attached)

Warm-up time At least 30 minutes Ambient temperature 0 to 50°C (reference temperature: 232°C) Temperature change 10°C/h or less Ambient humidity 20 to 90% RH (no condensation) Magnetic field 400A/m or less Continuous vibration 10 to 60 Hz, 0.035 mm, 75 minutes; 60 to 150 Hz, 4.9 m/s2, 75 minutes Short-time vibration 14.7 m/s2 for 15 seconds or less Shock 98 m/s2 or less (for shock time of 11 ms) Installation Indoor installation only Mounting position Vertical surface mounting only Installation altitude 2000 m or less

Effects of ambient temperature Analog output: 0.05% of F.S./°C or less Effects on power supply voltage variations Analog output: 0.05% of F.S./°C or less

Temperature -20 to 70°C Humidity 5 to 95% RH (no condensation) Shock and dropping of package

90 cm (provided that an external packing box is used)

Terminal block Polybutylene terephthalate (PBT), UL94 V-0 Terminal cover Polyamide resin (PA6), UL94 V-2

input, and RS-485 communication) M4 screws for terminal connections (voltage/current input and power supply) RJ45 connection (Ethernet communication, when the Ethernet communication function is specified)

110  110  128 mm (H  W  D) 96  96  126 mm (H  W  D)

A-8

IM 77C01E01-01E

Appendix 2 System Reset

There are two methods of performing system reset:

• Turn off the power of the PR300 and then turn it on again.

• Execute remote reset via communication (for remote reset, refer to the PR300 Power and Energy Meter Communication Interface User’s Manual: IM 77C01E01-10E)

Measured values to be reset

If system reset is executed, the following measured values will be reset.

• Maximum value, minimum value, and instantaneous value of voltage

• Maximum value and instantaneous value of current

• Optional active energy value

The values of active energy (regenerative energy), reactive energy, and apparent energy, as well as the settings set to parameters are not reset and are saved.

Actions after reset

The PR300 displays the Startup screen (where the station number can be seen) for about 5 seconds and then the Measured Value screen.

Measured Value screenStartup screen

Appendix

IM 77C01E01-01E

A-9

Appendix 3 Parameter Map

Some of the following parameters cannot be displayed due to the specifications of the PR300.

Power ON

Startup screen

Measured Value screen

Display pattern-1 Display pattern-2

Hold down for at least 3 seconds.

Specification Change

Confirmation screen

Hold down for at least 3 seconds.

Parameter screen

Display pattern-n (a maximum of 8 patterns)

Hold down for at least 3 seconds.

To move to the previous or next step in the procedure indicated by the dotted line, use the following keys:

Go to the next screen

Go to the previous screen

A-10

Hold down for at least 3 seconds.

When there are no changes to the specifications

4-1

4-2

4-3

4-4

4-5

4-6

IM 77C01E01-01E

Appendix 3 Parameter Setting Procedure

Parameter screen

5-1

5-2

5-3

5-4

5-5

6-1

6-2

6-3

7-1

7-2

7-3

5-6

5-7

5-8

5-9

5-10

5-11

5-12

5-13

5-14

To move to the previous or next step in the procedure indicated by the dotted line, use the following keys:

Go to the next screen Go to the previous screen

*1 Displayed for a PR300 with Ethernet

communication and when the protocol is

set to Modbus/TCP. *2 Displayed for a PR300 with pulse output. *3 Displayed for a PR300 with analog output. *4 Displayed for a PR300 with demand

measuring function.

Appendix

8-1

8-2

8-3

8-4

8-5

9-1

9-2

9-10

9-11

9-19

9-20

9-3

9-4

9-5

9-6

9-7

9-8

9-12

9-13

9-14

9-15

9-16

9-17

9-21

9-22

9-23

9-24

9-25

9-26

IM 77C01E01-01E

9-9

9-18

9-27

A-11

Appendix 4 Parameter List

Display

Order

4-1

4-2

4-3

4-4

4-5

4-6

*1 Only the PR300 with the Ethernet communication function can be selected. *2 Select "8" if you selected Modbus/RTU for the protocol. *3 Select NONE for Parity, 1 bit for Stop bit, and 8 bits for Data length if you have selected PR201 original for the protocol option.

Parameter

Symbol

Parameter Name MEMO

VT ratio

CT ratio

Integrated low-cut power

RS-485 communication menu

Station number

Protocol

Baud rate

Parity (*3)

Stop bit (*3)

Data length (*2) (*3)

Ethernet communication menu (Displayed only for a PR300 with the Ethernet communication function.)

Setting

Type

Integral numeric

value

Floating-point

numeric

value

Fixed-point

numeric

value

Integral numeric

value

Selection

Setting Range (Details)

1 to 6000

0.05 to 32000

0.05 to 20.00 (%)

Menu to shift to the parameters of RS-485 communication

1 to 99

PC link without checksum PC link with checksum

Modbus/ASCII Modbus/RTU

Modbus/TCP (*1) PR201 original 2400 bps

9600 bps 19200 bps

NONE EVEN

ODD 1 bit

2 bits 8 bits

7 bits

Menu to shift to the parameters of Ethernet communication

Initial Value

(Factory-

set Value)

PC link

checksum

9600 bps

1.00

0.05

with

NONE

5-1

5-2

5-3

5-4

5-5

5-6

5-7

A-12

IP address-1

IP address-2

IP address-3

IP address-4

Subnet mask-1

Subnet mask-2

Subnet mask-3

Integral numeric

value

Integral numeric

value

0 to 255

192

168

255

IM 77C01E01-01E

Appendix 4 Parameter List

Display

Order

5-8

5-9

5-10

5-11

5-12

5-13

5-14

6-1

6-2

6-3

7-1

7-2

7-3

8-1

Parameter

Symbol

Parameter Name MEMO

Subnet mask-4

Default gateway-1

Default gateway-2

Default gateway-3

Default gateway-4

Port number

Ethernet setting switch

Pulse output menu (Displayed only for a PR300 with pulse output.)

Measurement item for pulse output

Pulse unit

ON pulse width

Analog output menu (Displayed only for a PR300 with analog output.)

Measurement item for analog output

Lower limit of scaling

Upper limit of scaling

Demand measurement menu (Displayed only for a PR300 with demand measuring function.)

Demand power/current

Setting

Type

Integral numeric

value

Integral numeric

value

Integral numeric

value

Selection

Fixed-point

numeric

value

Integral numeric

value

Selection

Fixed-point

numeric

value

Fixed-point

numeric

value

Selection

Setting Range (Details)

0 to 255

502, 1024 to 65535

ON OFF

Menu to shift to the parameters of pulse output

Active energy Regenerative energy

LEAD reactive energy LAG reactive energy

Apparent energy

0.1 to 5000.0 (k)

10 to 1270 (ms)

Menu to shift to the parameters of analog output

Active power Reactive power

Apparent power Voltage-1

Voltage-2 Voltage-3 Current-1 Current-2 Current-3

Power factor Frequency

0.0 to 50.0 (%)

50.0 to 100.0 (%)

Menu to shift to the parameters of demand measurement

Active power Current

Initial Value

(Factory-

set Value)

502

Appendix

Active energy

1.0

Active power

50.0

100.0

Active power

IM 77C01E01-01E

A-13

Appendix 4 Parameter List

Display

Order

8-2

8-3

8-4

8-5

9-1

9-2

9-3

9-4

9-5

9-6

9-7

9-8

9-9

9-10

9-11

9-12

9-13

9-14

9-15

Parameter

Symbol

Parameter Name MEMO

Demand period

Demand alarm mask time

Demand alarm point

Demand alarm release function

Display setting menu

Indicator-out mode

Indicator-out mode wait time

Number of display patterns

Display pattern-1 upper display

Display pattern-1 middle display

Display pattern-1 lower display

Display pattern-2 upper display

Display pattern-2 middle display

Display pattern-2 lower display

Display pattern-3 upper display

Display pattern-3 middle display

Display pattern-3 lower display

Display pattern-4 upper display

Display pattern-4 middle display

Display pattern-4 lower display

Setting

Type

Integral

numeric

value

Integral

numeric

value

Integral

numeric

value

Selection

Integral

numeric

value

Integral

numeric

value

Selection

Setting Range (Details)

1 to 60 (min) (Demand alarm mask time to 60) (min)

1 to 59 (min) (1 to demand period) (min)

1 to 1000 (kW) or 1 to 1000 (A)

Automatic release Manual release Menu to shift to the parameters of

display setting

ON OFF

1 to 60 (min)

1 to 8

A measurement item can be selected from the following:

None Active energy

Regenerative energy LEAD reactive energy

LAG reactive energy Apparent energy Active power Reactive power Apparent power

Voltage (phase switch indication)

Voltage-1 Voltage-2

Voltage-3

Current (phase switch indication)

Current-1 Current-2

Current-3 Power factor Frequency Optional active energy Demand value Maximum demand value

Initial Value

(Factory-

set Value)

100

Automatic

release

OFF

10 (min)

Current

(phase switch

indication)

Voltage

(phase switch

indication)

Active power

Reactive power

Power factor

Active energy

LEAD reactive

energy

Apparent

energy

Current-1

Current-2

Current-3

9-16

9-17

9-18

A-14

Display pattern-5 upper display

Display pattern-5 middle display

Display pattern-5 lower display

Voltage-1

Voltage-2

Voltage-3

IM 77C01E01-01E

Appendix 4 Parameter List

Display

Order

9-19

9-20

9-21

9-22

9-23

9-24

9-25

9-26

9-27

Parameter

Symbol

Parameter Name MEMO

Display pattern-6 upper display

Display pattern-6 middle display

Display pattern-6 lower display

Display pattern-7 upper display

Display pattern-7 middle display

Display pattern-7 lower display

Display pattern-8 upper display

Display pattern-8 middle display

Display pattern-8 lower display

Setting

Type

Selection

Setting Range (Details)

Refer to the previous page.

Initial Value

(Factory-

set Value)

Current

(phase switch

indication)

Voltage

(phase switch

indication)

Frequency

Current

(phase switch

indication)

Active power

Power factor

Active power

Maximum

demand value

Demand value

Appendix

Range of Phase and Wire System Options and Voltage Range Options

Phase and Wire System

Parameter

Symbol

Parameter

Name

Phase and

wire system

Setting

Type

Selection

Model and Suffix Codes

Setting Range (Details) MEMO

Single-phase two-wire system

Single-phase three-wire system

Three-phase three-wire system

Single-phase two-wire system

Single-phase three-wire system

Three-phase three-wire system

Three-phase four-wire system

Three-phase four-wire system (2.5 element)

Initial Value

(Factory-set

Value)

Three-phase

three-wire

system

Three-phase

four-wire

system

Three-phase

four-wire system

(2.5 element)

Voltage Range

Parameter

Symbol

Parameter Name MEMOSetting Type Setting Range (Details)

Voltage range

Selection

150V

Initial Value

(Factory-set

Value)

300V

600V

IM 77C01E01-01E

A-15

Appendix 5 Alphanumeric Characters Table for

7-segment LED

The PR300 uses a 7-segment LED as its display. It displays alphanumeric characters according to the table below (however, the table also contains characters that are not used by the PR300).

A-16

NOTE

The PR300 displays H and U in two different forms (uppercase and lowercase) for easy viewing.

IM 77C01E01-01E

Index

Analog output conditions setting ....................................... 3-12

Component names and functions ....................................... 2-1

CT ratio setting ....................................................................3-3

Demand ............................................................................ 4-12

Demand alarm ..............................................................4-14

Demand alarm mask time ............................................. 4-14

Demand alarm release function.................................... 4-14

Demand measurement conditions setting .................... 3-14

Measurement example .................................................4-14

Measuring operation .....................................................4-13

Measuring range........................................................... 4-12

Display pattern .................................................................... 4-2

Dust cover ...........................................................................1-9

Energy value display operation ...........................................4-8

Error display and recommended response ......................... 5-1

Ethernet communication conditions setting ........................ 3-8

External Dimensions

ANSI 4-inch round form size........................................... 1-1

DIN 96-square instrument size .......................................1-3

How to switch between instantaneous value, maximum ..... 4-5

Indicator-out mode setting ................................................ 3-19

Integrated low-cut power ..................................................... 3-5

Integrated low-cut power setting ......................................... 3-4

Measured value display pattern setting ............................ 3-16

Measured value reset ....................................................... 4-10

Measurement items ............................................................ 4-1

Measuring range

Active energy ..................................................................4-7

Active power ...................................................................4-3

Apparent energy .............................................................4-7

Apparent power .............................................................. 4-3

Current............................................................................ 4-4

Frequency....................................................................... 4-5

Power factor ................................................................... 4-4

Reactive energy.............................................................. 4-7

Reactive power ...............................................................4-3

Regenerative energy ...................................................... 4-7

Regenerative power ....................................................... 4-3

Voltage............................................................................ 4-4

Mounting method

ANSI 4-inch round form size........................................... 1-2

DIN 96-square instrument size .......................................1-4

Optional integrating function ............................................... 4-9

Panel cutout dimensions

ANSI ............................................................................... 1-1

DIN ................................................................................. 1-3

Parameter list ................................................................... A-12

Parameter lock and Unlock ...............................................3-20

Parameter map ................................................................ A-10

Parameter setting

Analog output conditions .............................................. 3-12

CT ratio ...........................................................................3-3

Demand measurement conditions ................................3-14

Ethernet communication conditions ................................ 3-8

Indicator-out mode........................................................ 3-19

Integrated low-cut power ................................................ 3-4

Measured value display pattern.................................... 3-16

Phase and wire system .................................................. 2-2

Pulse output conditions ................................................ 3-10

RS-485 Communication Conditions ............................... 3-6

Voltage range ................................................................. 2-4

VT ratio ........................................................................... 3-2

Phase and wire system setting ........................................... 2-2

Phase switching .................................................................. 4-6

Pulse output conditions setting ......................................... 3-10

RS-485 communication conditions setting ..........................3-6

Specifications

Analog output specifications .......................................... A-3

Communication specifications ....................................... A-4

Compliance with safety and EMC standards ................. A-7

Demand alarm Output specifications............................. A-4

Digital input specifications ............................................. A-3

Environmental Conditions.............................................. A-8

Input specifications ........................................................ A-2

Measuring function ........................................................ A-1

Mounting and Shape ..................................................... A-8

Pulse output specifications ............................................ A-3

Standard performance ................................................... A-6

System reset ...................................................................... A-9

Terminal cover .....................................................................1-9

Voltage range setting .......................................................... 2-4

VT ratio setting ....................................................................3-2

Index

IM 77C01E01-01E

Index-1

Wiring diagram

Single-phase two-wire system ........................................1-6

Single-phase three-wire system ..................................... 1-6

Three-phase three-wire system ......................................1-6

Three-phase four-wire system ........................................1-7

Three-phase four-wire system (2.5 element).................. 1-7

Analog output ................................................................. 1-8

Demand alarm output .....................................................1-8

Demand alarm release ................................................... 1-8

Ethernet communication .................................................1-8

Integration control signal ................................................ 1-8

Palse output.................................................................... 1-8

RS-485 communication .................................................. 1-8

Index-2

IM 77C01E01-01E

Yokogawa Yokogawa PR300-31003-6RO/S02 Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Notices

Checking the Package

Checking the Model and Suffix Codes

Contents

Chapter 1 Installation and Wiring

1.1 Installation with the ANSI 4-inch Round Form or JIS 110-square Instrument Size

External Dimensions

Panel Cutout Dimensions

ANSI

Mounting Method

1.2 Installation with the DIN 96-square Instrument Size

External Dimensions

Panel Cutout Dimensions

Mounting Method

1.3 Wiring

Crimping Terminal Recommendations

Single-phase two-wire system (voltage input, current input, power supply)

Single-phase three-wire system (voltage input, current input, power supply)

Three-phase three-wire system (voltage input, current input, power supply)

Three-phase four-wire system (voltage input, current input, power supply)

Three-phase four-wire system (2.5 element) (voltage input, current input, power supply)

Other Wiring

Analog output

Demand alarm output

Ethernet communication

RS-485 communication

1.4 Attaching the Dust Cover and Terminal Cover

Chapter 2 Preparations before Starting Measurement (Set up the PR300 First)

2.1 Component Names and Functions

2.2 Setting the Phase and Wire System

phase and wire system

Range of Phase and Wire System Options

2.3 Setting the Voltage Range

Range of Voltage Range Options

Chapter 3 Parameter Setting Operations

3.1 Basic Parameter Setting Operations

Methods of Changing Parameter Setpoints

3.2 Setting the VT and CT Ratios

Setting the VT Ratio

VT ratio

Setting the CT Ratio

CT ratio

3.3 Setting the Integrated Low-cut Power

Integrated low-cut power

3.4 Setting RS-485 Communication Conditions

3.5 Setting Ethernet Communication Conditions

3.6 Setting Pulse Output Conditions

3.7 Setting Analog Output Conditions

Relationship between Scale Values and Measurement Inputs (Example)

3.8 Setting Demand Measurement Conditions

3.9 Setting the Measured Value Display Pattern

Setting the Indicator-out Mode

Locking and Unlocking Parameters

Chapter 4 Operation for Display of Measurement Items and Measurement Method

4.1 Measurement Items

Measurement items

4.2 Switching Display Pattern

Switching Display Pattern

Initial Values and Example Display Patterns

4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values

Example Display and Measuring Ranges of Active Power (Regenerative Power)

Active power

Example Display and Measuring Ranges of Reactive Power

Reactive power

Example Display and Measuring Ranges of Apparent Power

Apparent power

Example Display and Measuring Ranges of Voltage

Example Display and Measuring Ranges of Current

Example Display and Measuring Ranges of Power Factor

Power factor

Example Display and Measuring Ranges of Frequency

Frequency

How to Switch between Instantaneous Value, Maximum Value, and Minimum Value

4.4 Phase Switching for Voltage and Current

How to Switch the Phase for Single-phase Three-wire, Three-phase Three-wire and Three-phase Four-wire (2.5 element) Systems