Panasonic KW2G, KW2G-H User Manual

【KW2G】

Check alarm

Check measured

Measure Power

Mount / Connection

Settings

Count pulse

Wire the main unit

Connect the current transf or m er ( CT)

Wire output

Wire

communication

Wire input

Power on the main unit

Set the parameter for

Check measured

Set alarm

Set

Set the basic settings (MO DE 1)

p.33

p.42

6.2

5.2

Update

Check

4.3.4

Check how to

Basic setting to measure by KW2G Eco-POWER METER

When wiring the main unit and the current transformer (CT) and setting the basic setting after power on, you can measure the power The basic setting of MOD E1 is n ecessary to measure. In order to use the other functions, t he s et t ings of the each parameter are necessary.

What to do

Output Alarm

line

output

(MODE1)

Collect data

via RS485

communication

setting

(MODE3)

output from

other device

line

pulse measurement

p.41

the firmware

update

How to use

data with power

monitoring mode

output

data via

communication

device

Check count value

with power

monitoring mode

the software

version

【KW2G-H (SD card type)】

After measuring,

Check log data

Check alarm

Measure Power

Mount / Connection

Settings

Count pulse

Wire the main unit

Connect the current transf or m er ( CT)

Wire output

Prepare

Wire

communication

Wire input

Power on the main unit

Set the parameter for

Set log

Check measured

Set alarm

Set

(MODE3)

Set the basic settings (MO DE 1)

Set log

p.44

p.33

p.42

p.44

6.2

6.4

5.5

3 3 3 3 3

Update

Check

4.3.4

Check how to

p.41

Basic setting to measure by KW2G-H Eco-POWER METER

When wiri ng the main unit and the current transformer (CT) and setting the basic setting after power on, you can measure the power The basic setting of MOD E1 is n ecessary to measure. In order to use the other functions, t he settings of the each parameter are necessary.

What to do

Output Alarm

line

output

(MODE1)

Collect data

via RS485

communication

setting

Log data

setting

(MODE4)

Read out

log data

SD memory

card

p.33

setting

(MODE4)

p.44

output from

other device

line

Set calendar timer and initialize memory of main unit (＊) (MODE4･5)

pulse measurement

the firmware

update

*Be sure t o set calendar timer (clock) and

initialize me mor y of main unit before measuring.

How to use

data with power

monitoring mode

output

5.2

Check measured

data via

communication

device

with option mode

insert

SD memory card

Check count value

with power

monitoring mode

the software

version

Read the manual carefully before installing, running and maintenance for proper operation.

the whole

could cause damage to the

lithium battery or other electronic parts.

t abnormal exothermic heat or smoke generation, use this product at the

Do not allow foreign matters such as liquid, flammable materials, metals to go into the

heat or

damage.

ther company names and the product names are the trademarks or registered

Cautions for Your Safety

Before using, master the knowledge of the equipment, safety information and all of other notes. This manual uses two safety flags to indicate different levels of danger.

WARNING

●Always take precautions to ensure the overall safety of your system, so that system remains safe in the event of failure of this product or other external factor.

●Do not use this product in areas with inflammable gas. It could lead to an explosion.

●Exposing this product to excessive heat or open flames

CAUTION

●To preven values less than the maximum of the characteristics and performance that are assured in these specifications.

● Do not dismantle or remodel the product. It could lead to abnormal exothermic heat or

smoke generation.

●Do not touch the terminal while turning on electricity. It could lead to an electric shock.

●Use the external devices to function the emergency stop and interlock circuit.

●Connect the wires or connectors securely. The loose connection might cause abnormal

exothermic heat or smoke generation.

●

inside of the product. It might cause exothermic heat or smoke generation.

●Do not undertake construction (such as connection and disconnection) while the power supply is on.

●Do not use at secondary side circuit of inverter. It might cause exothermic

A handling error could cause serious physical injury to an operator and in the worst case could even be fatal.

A handling error could cause serious physical injury to an operator or damage to the equipment.

● Panasonic Industrial Devices SUNX Co. , Ltd. owns the copyright of this manual.

● We stif fly refuse the reproduction of without permission from this manual.

●Modbus Protocol is a communication protocol that the Modicon Inc. developed for PLC.

●O

trademarks of each company.

Introduction

Thank you very much indeed for purchasing ‘KW2G Eco-POWER METER’. In this manual, we explain t he usage of ‘KW2G Eco-POWER METER’ in detail. Please use it correctly after understanding the content enough.

Table of Contents

Chapter 1 Unit’s Outline ............................................................................................................................. 1

1.1 Unit’s Name and Model Numbers ............................................................................................................ 1

1.2 Combination devices................................................................................................................................ 1

1.3 Firmware .................................................................................................................................................. 2

1.4 Option ...................................................................................................................................................... 3

1.5 Other tools ............................................................................................................................................... 3

1.6 Measurement items ................................................................................................................................. 4

Chapter 2 Parts Name and Working .......................................................................................................... 5

2.1 Parts Name .............................................................................................................................................. 5

2.2 Key’s Functions ........................................................................................................................................ 7

Chapter 3 Installation ................................................................................................................................. 8

3.1 Measured-circuit ...................................................................................................................................... 8

3.2 Connection between the main unit and the expansion unit ..................................................................... 8

3.3 DIN rail mounting ..................................................................................................................................... 9

3.4 Terminal arrangement ........................................................................................................................... 10

3.4.1 Main unit (common to AKW2010G and AKW2020G) .................................................................. 10

3.5 Wiring Diagram ...................................................................................................................................... 11

3.5.1 In case of using only main unit ..................................................................................................... 11

3.5.2 In case of using main unit and connected expansion units .......................................................... 13

3.5.3 In case of using simple measuring mode ..................................................................................... 16

3.6 How to attach the Current Transformer (CT) ......................................................................................... 17

3.7 For input connection .............................................................................................................................. 18

3.8 For Output connection ........................................................................................................................... 20

3.9 RS485 communication ........................................................................................................................... 20

3.10 Backup battery (only for KW2G-H SD card type) ................................................................................ 22

3.11 Low Voltage Directive .......................................................................................................................... 23

Chapter 4 Settings .................................................................................................................................... 24

4.1 Setting for KW2G main unit and Expansion unit (power measurement) ............................................... 24

4.2 Setting for KW2G-H main unit SD card type and Expansion unit (power measurement) ..................... 28

4.3 Setting Mode Explanation for Main unit and Expansion unit (power measurement) ............................. 33

4.3.1 Mode 1 .......................................................................................................................................... 33

4.3.2 Mode 2 .......................................................................................................................................... 41

4.3.3 Mode 3 .......................................................................................................................................... 42

4.3.4 Mode 4 .......................................................................................................................................... 44

4.3.5 Mode 5 .......................................................................................................................................... 46

4.3.6 Remove SD memory card *Only KW2G-H ................................................................................... 47

Chapter 5 Various Functi ons .................................................................................................................... 48

5.1 LOCK mode ........................................................................................................................................... 48

5.2 Pulse output function ............................................................................................................................. 48

5.2.1 Output depends on integrated electric power .............................................................................. 48

5.2.2 Instantaneous electric power alarm ............................................................................................. 48

5.2.3 Current alarm................................................................................................................................ 48

5.2.4 Stand-by power alarm .................................................................................................................. 48

5.2.5 Output depends on count value ................................................................................................... 48

5.2.6 General purpose output ................................................................................................................ 49

5.2.7 Error alarm .................................................................................................................................... 49

5.3 Counter function ..................................................................................................................................... 49

5.4 General-purpose output function ........................................................................................................... 50

5.5 Hour meter function ............................................................................................................................... 51

5.6 Log data writing function ........................................................................................................................ 52

5.6.1 In case that SD memory card is always inserted to card slot ...................................................... 52

5.6.2 In case that you insert SD memory card ...................................................................................... 53

5.6.3 Unit memory ................................................................................................................................. 55

5.6.4 Format for written file .................................................................................................................... 56

5.6.5 File name and Saved folder ......................................................................................................... 59

5.6.6 Logging data ................................................................................................................................. 61

Chapter 6 Display of each Val ue .............................................................................................................. 62

6.1 Working of Monitor Display .................................................................................................................... 62

6.1.1 KW2G Main unit, Expansion unit (Power measurement) ............................................................. 62

6.1.2 KW2G-H Main unit SD card type, Expansion unit (Power measurement) ................................... 67

6.2 Display of each measurement value...................................................................................................... 72

6.3 Display for power monitoring mode ....................................................................................................... 72

6.3.1 Integrated electric power .............................................................................................................. 72

6.3.2 Instantaneous electric power ........................................................................................................ 73

6.3.3 Current .......................................................................................................................................... 74

6.3.4 Voltage ......................................................................................................................................... 75

6.3.5 Electricity Charge ......................................................................................................................... 76

6.3.6 Carbon dioxide conversion value ................................................................................................. 76

6.3.7 Power factor ................................................................................................................................. 77

6.3.8 Frequency ..................................................................................................................................... 77

6.3.9 Hour meter .................................................................................................................................... 78

6.3.10 Counter / Pulse input status ....................................................................................................... 80

6.4 Display for option mode *only KW2G-H SD card type ...................................................................... 81

6.4.1 Calendar/Timer ............................................................................................................................. 81

6.4.2 Daily integrated electric power (kWh) .......................................................................................... 82

6.4.3 Hourly integrated electric power (kWh) ........................................................................................ 83

6.5 Other indication ...................................................................................................................................... 85

6.5.1 Indication while communication.................................................................................................... 85

6.5.2 Error indication ............................................................................................................................. 85

Chapter 7 Communication........................................................................................................................ 86

7.1 Communication Procedures .................................................................................................................. 86

7.2 Communication timing ........................................................................................................................... 86

7.3 MEWTOCOL Communication ................................................................................................................ 87

7.3.1 Overview of MEWTOCOL-COM (RS485, USB) ........................................................................... 87

7.3.2 Data Register List (MEWTOCOL) ................................................................................................ 88

7.3.3 Error Codes .................................................................................................................................. 94

7.3.4 Command ..................................................................................................................................... 94

7.4 MODBUS (RTU) Communication .......................................................................................................... 96

7.4.1 Overview of MODBUS (RTU) ....................................................................................................... 96

7.4.2 Data Register List (MODBUS communication) ............................................................................ 99

7.5 Status ................................................................................................................................................... 108

Chapter 8 How to update the firmware .................................................................................................. 109

8.1 Prepare Eco-POWER METER to update ............................................................................................ 109

8.2 Update the firmware using KW Version Upgrade Tool ........................................................................ 109

Chapter 9 Specification s ........................................................................................................................ 114

9.1 Main unit, Expansion unit (power measurement) ................................................................................ 114

9.2 Measurement ....................................................................................................................................... 115

9.3 Output Specifications ........................................................................................................................... 116

9.4 Communication Specifications ............................................................................................................. 117

9.5 Main Unit Memory Specifications (only KW2G-H SD card type: AKW2020G) .................................... 118

9.6 External Memor y Specific ations (on l y KW 2G -H SD card type: AKW2020G) ...................................... 119

9.7 Self-diagnostic function ........................................................................................................................ 120

9.8 Power Failure Memor y ......................................................................................................................... 120

9.9 Applicable standard ............................................................................................................................. 120

9.10 Dedicated Current Transformer Specifications .................................................................................. 121

Chapter 10 Mounting .............................................................................................................................. 122

10.1 Dimensions ........................................................................................................................................ 122

10.1.1 KW2G Main unit ....................................................................................................................... 122

10.1.2 KW2G-H SD card type Main unit.............................................................................................. 123

10.1.3 Expansion unit (power measurement) ..................................................................................... 124

■

◇

■

・

■

Cautions before using

Installation environment

Do not use the Unit in the following environment s .

・Where the unit will be exposed to direct sunlight and w her e t he ambient temperature is outsid e

the range of -10 to 50 °C.

・Where the ambient humi dit y is outside the range of 30 to 85 % R H ( at 20℃, non-condensing)

and where condensation m ight occur by sudden temperature c hanges

・Where inflammable or corrosive gas might be produced ・Where the unit will be exposed to excessive airborne dust or metal particles ・Where the unit will be expos ed to water, oil or chemicals ・Where organic solvents such as benzene, paint thinner, alcohol, or strong alkaline s olutions

such as ammonia or caust ic soda might adhere to the produ ct

・Where direct vibration or shock might be transmitted to the product, and where water might wet

the product

・Where the place near high-voltage cable, high-v oltage device, power line, pow er device. ・Where the place near a machinery with transmission function such as a m at eur radio. ・Where the place near a machinery which occurs the big switching serge

Please use the Unit according to the specifications described in this manual. Otherwis e, i t

may malfunction or cause fire and an electric shock.

・Connect to the power su pply in compliance with the rating. ・Refer to the wiring diagr am to ensure proper wiring for t he pow er supply, input and output. ・Do not perform wiring or insta ll at ion with a live line. It may also lead to circuit burnout or fire by

way of the secondary CT sid e opening.

Installation

・Eco-POWER METER is designed t o be used in a control panel. ・The power supply termin al an d voltage input terminal of the ma in un it is common. Therefore if

additional noise effects t he power supply line, incorrect measurements may result.

・Installation and wiring must be performed by exper t per sonnel for electrical work or ele ct r ic

piping.

・Do not add an excess power t o t he display. It might break the inner l iq uid crystal.

As to measurement

･If there is some distortion by harmonic or waveform, it may not mea sur e correctly. Please check with the actual system before adopts it.

・It might not measure an instantaneous current such as an inrush current or an w elding machine. ・When measuring the below loads, it might not satisfy with the accuracy guarantee.

Out of rating current, Load with low power factor, Load with windi ng cur r ent , Load with ferromagnetic f ie ld ・Power factor operation is a method assuming balanced load. The error might be big when it

measures unbalanced load.

It takes time to update monitor display when many units are connected. However, data

update cycle is not chan ged.

The unevenness will be large when using outside of rated frequency.

In this case, set the shift average frequency bi g.

Static electricity

・Discharge static electricity touching the grounded metal etc. when you touch t he unit . ・Excessive static electric ity might be generated esp ec i al ly in a dry place.

Cleaning

・Wipe dirt of the main unit wit h soft cloth etc. When thinner is used, t he unit might deform or be

discolored.

■

Power supply

・Connect a breaker to the voltage input part for safety reasons a nd to protect the device.

The breaker that connect s to t he voltage input part must arrange at t he pos ition easily reached, and display shows it is the breaker of the equipment.

・Do not turn on the power supp ly or input until all wiring is completed.

Before power on

Please note the following poi nts when turning on power at the first time.

・Confirm there are neither wiring rubbish nor especially an electrical conduction when installed. ・Confirm neither the power supply wiring, the I/O w iring nor t he pow er-supply voltage are wr ong. ・Tighten the installation screw and the terminal scr ew surely. ・Use an electric wire applicable to the rated current.

KW2G / KW2G-H Eco-POWER METER

Product name

CT Connector color

Model No.

Log function

KW2G Eco-POWER METER Main unit

Blue

AKW2010GB

White

AKW2010G

KW2G-H Eco-POWER METER Main unit SD card type

Blue

AKW2020GB

White

AKW2020G

Power supply termina l

(Voltage input termina l)

Current transformer(CT)

Connector

USB communication

Connector

Product name

Model No.

Connecting method

AKW2110GB

(connector color; Blue)

Current transformer (CT)

Connector

*Connect to main unit with the connector.

AKW2110G

(connector color; White)

Product name

Model No.

Connecting method

Current transformer (CT)

Connector

AKW2160G

(connector color; White)

*Connect to main unit with the connector. *Connect to main unit with the connector.

*Connect to main unit with the connector.

Chapter 1 Unit’s Outline

KW2G Eco-POWER METER is the wattmeter that can measure elec t r ic power, current, voltage, PF and so on with combination of one main unit and expansion units (power measurement, power measurement + pulse out put ). By connecting main unit a nd expansion unit (power measurement, power measurement + pulse output), it can measure up to 8-circuit (16-circuit of single-phase two-wire system). By connecting expansion unit of pulse input type, it can mea s ur e pulse signal from a sensor. By connecting expansion unit of analog input type, it can measure digital conversion value (voltage/current) fro m a s ensor .

1.1 Unit’s Name and Model Numbers

●Main unit

Not available Available

Note) AKW20x0GB and AKW20x0G (without B) are not compatible.

Please be aware that only AKW20x0GB and AKW4x0xB (CT) can be used together.

・

Connecting method (common)

●Expansion unit

Expansion unit

(Power measurement)

Note)

It is impossible to measur e by only the expansion unit. Be sure to connect expan sion units to the main unit. AKW2110GB and AKW2110G are not compatible. Please be aware that only AKW2110GB and AKW48xxB (CT) can be used together.

・Pulse I/O terminal M3＋screw

・

RS485 communication terminal

・・

M3.5＋screw

M3＋screw

1.2 Combination devices

Expansion unit

(Power measurement

+ Pulse output) Expansion unit

(Pulse input)

Expansion unit

(Analog input)

Note) AKW2160GB and AKW216 0G are not compatible.

Please be aware that only AKW2160GB and AKW4x0xB (CT) can be used together.

*In this manual, we explain the usage of ‘KW2G Main unit’, ‘KW2G-H Main unit’ and ‘Expansion

unit (Power measurement)’.

AKW2160GB

(connector color; Blue)

AKW2152G

AKW2182G

Pulse output terminal

Pulse input terminal

Analog input terminal

M3＋ screw

KW2G / KW2G-H Eco-POWER METER

Functions

-Check the pulse input

-Display an integrated

function

-Eject SD memory card

Functions

Model

-Hour meter

1.3 Firmware

●Combination software using the expansion unit Expansion unit firmware Firmware of AKW2010G Firmware of AKW2020G

AKW2110G Ver.1.00 or later Ver.1.00 or later Ver.1.00 or later AKW2152G Ver.1.10 or later Ver.1.02 or later Ver.1.00 or later AKW2182G Ver.1.10 or later Ver.1.02 or later Ver.1.00 or later AKW2160G Ver.1.20 or later Ver.1.04 or later Ver.1.01 or later

●For using the additional functions

Model number

condition with the main unit or communication

-Set pulse output width

electric power with unit of

0.001kWh

-General-purpose output

-Error alarm output

AKW2010G Ver.1.04 or more Ver.1.05 or more Ver.1.06 or more AKW2020G Ver.1.01 or more Ver.1.02 or more Ver.1.03 or more AKW2110G ― Ver.1.04 or more Ver.1.05 or more AKW2160G Ver.1.00 or more Ver.1.01 or more Ver.1.02 or more AKW2152G Ver.1.01 or more ― ― AKW2182G ― ― ―

number

AKW2010G Ver.1.10 or more AKW2020G Ver.1.10 or more AKW2110G Ver.1.05 or more AKW2160G Ver.1.02 or more AKW2152G Ver.1.01 or more AKW2182G ―

KW2G / KW2G-H Eco-POWER METER

Rated

primary current

Connector

color

Blue

AKW4801B

White

AKW4801C

Blue

AKW4802B

White

AKW4802C

Blue

AKW4803B

White

AKW4803C

Blue

AKW4804B

White

AKW4804C

Blue

AKW4808B

White

AKW4808C

Rated primary

current

Connector

color

Blue

AKW4506B

White

AKW4507C

Blue

AKW4508B

White

AKW4508C

Product name

Model No

Download from our

Free of charge

Download from our

Free of charge

You can upgrade the far mwar e of

1.4 Option

●Dedicated current transformer clamp-on type (CT)

Product name

Dedicated current transf or mer for 5A/50A 5A / 50A

Dedicated current transf or mer for 100A 100A

Dedicated current transf or mer for 250A 250A

Dedicated current transf or mer for 400A 400A

Dedicated current transf or mer for 600A 600A Note) AKW480xB and AK W48 0xC are not compatible.

●Dedicated current transformer through type (CT)

Product name

Dedicated current transf or mer for 50A/100A 50A / 100A

Dedicated current transf or mer for 250A/400A 250A / 400A

Dedicated current transf or mer for 600A 600A

Model No

White AKW4506C

Blue AKW4507B

Note) AKW450xB and AK W45 0xC are not compatible.

●Others

Mounting rail AT8-DLA1

Fastening plate ATA4806

Battery (included with AKW2020G) AFPG804 *1

Extension cable for CT 3m AKW4703 Extension cable for CT 5m AKW4705

*1 only for KW2G-H SD card type

1.5 Other tools

Product name Functions Model No

Data collection software

KW Monitor

Power display tool

KW View

・Monitoring and logging t he

measured values.

・It makes graph by using data from

Eco-POWER METER

website.

Eco-POWER METER Version Upgrade Tool

KW Version Upgrade Tool

Note) Members registration is required to download.

・

main unit and expansion unit.

・USB driver is included.

Download from our

website.

Free of charge

KW2G / KW2G-H Eco-POWER METER

Item

Unit

Data range

0.000 to 999999.999kWh

(minimum unit: 0.001kWh)

Conversion

value

-1.00 to 0.00 to 1.00

1.6 Measurement items

･6-digit display

Integrated electric power ( Act ive) *1

Active *2 kW -9999.99 to 0.000 to 9999.99

Instantaneous

electric power

Reactive *3 kvar -9999.99 to 0.00 to 9999.99

Apparent kVA 0.00 to 9999.99

R-current A 0.000 to 6000.00

Current

N/S-current A 0.000 to 6000.00 (calculated value)

T-current A 0.000 to 6000.00

R(RS)-voltage V 0.0 to 9999.9

Voltage

S(RT)-voltage V 0.0 to 9999.9 (calculated value)

T(TS)-voltage V 0.0 to 9999.9

Electricity charge *4 0.00 to 999999

kWh/

MWh

0.00 to 9999.99MWh

・9-digit display

0.00 to 9999999.99kWh

(minimum unit: 0.01 kWh)

(minimum unit: 0.01kWh)

Carbon dioxide kg-CO2 0.00 to 999999

Power Factor *2

(without identify leading phase and lagging phase)

Frequency *5 Hz 47.5 to 63.0

OFF-time

ON-time 1

Hour meter

ON-time 2

Maintenance time

Hour 0 to 99999.9

Actual work time Ratio of ON-time 1 Ratio of ON-time 2

% 0.0 to 100.0

Pulse counter *5 *7 0 to 999999

*1 KW2G can measure regeneration electric power.

Integrated electrical pow er is not integrated (not subtr act ed) w hen det ecting regeneration power.

*2 W hile detecting regeneration electric power, minus is displayed on instantaneous active power and

power factor.

*3 It determines pulse or minus of instantaneous reactive power by the input measuring voltage and the

input measuring current. When harmonics or a wav e pattern is warped, it may not det er mine cor r ectly.

*4 Eco-POWER METER i s designed chiefly to manage saving energy.

It is neither intended nor can it be lega lly used for billing. *5 Frequency and pulse counter are only for main unit. *6 Expansion unit (Analog input) doesn’t have the hour meter function.

With expansion unit (Pu lse input), maintenance time and actual work time can be measured.

Maintenance time by using pulse input can’t be measured with expansion unit (Power measurement)

and expansion unit (Powe r mea sur ement + Pulse outout).

For ratio of ON-time1 and ratio of ON-time2, it uses measuring value inside every 1 sec., therefore it

may be different when you compare with OFF-time, ON-time1, ON-time2, maintenace time and

actual work time.

Hour meter function can be us ed only with main unit and one expa nsion unit. *7 Displayed digit of pulse c ount er differs according to the pre-scale set by pre-scale setting m ode.

KW2G / KW2G-H Eco-POWER METER

Operating power supply

Liquid crystal display

MODE key

Pulse I/O terminal(M3)

RS485 communication

Connector for

Operating power supply

Liquid crystal display

MODE key

SD card slot

Pulse I/O terminal(M3)

RS485 communication

Connector for

Chapter 2 Parts Name and Working

2.1 Parts Name

Front view

(Measured voltage input)

(M3.5)

SET key

ITEM/△ key

USB port

terminal (M3)

(Measured voltage input)

(M3.5)

SET key

ITEM/△ key

current transformer( CT)

Battery cover

USB port

terminal (M3)

current transformer(CT)

KW2G / KW2G-H Eco-POWER METER

Side view

Connector label Peel off before connecting expansion unit Do not peel off when not connecting.

Hook: 2 points

Push the hooks into the unit t o fix the expansion unit.

KW2G / KW2G-H Eco-POWER METER

①

⑧

<MODE> (continuous press 3-sec)

Use to set each value enter ed

(only available while outp ut t he st and -by alarm)

To select setting value

<SET> and <MODE> (continuous press 3-sec)

①LOCK indicator

Key operation is invalid while lighting.

②TX/RX indicator

Lighting when communication

③OUT indicator

Lighting when pulse outpu t

④Unit number indicator

M: Main unit

①

④

② ③

⑤

⑥

1 to 7: Expansion unit

⑤Setting mode indicator ⑥Each measurement value

④

①LOCK indicator

Key operation is invalid w hile lighting.

⑦

②TX/RX indicator

Lighting when communication

③OUT indicator

Lighting when pulse outpu t

④Unit number indicator

M: Main unit 1 to 7: Expansion unit

⑤Setting mode indication

② ③

⑤

⑥

⑥Each value indicator ⑦LOG indicator

Lighting while logging

⑧SD indicator

Lighting while inserting SD memory card

2.2 Key’s Functions

<MODE>

・Shift unit number to display ・Use to shift setting mode

・

<SET>

<SET> (continuous press 3-sec)

(continuous press 3-sec)

・Reset stand-by alarm while output the alarm

・All keys locked ・Release lock mode while in lock mode ・To select measured valu e display ・To select setting value ・To select measured valu e display

・

・Shift measured items to display

(Instantaneous electric power, current, voltage) ・To reset the measured value

(While monitoring) (While setting mode)

KW2G / KW2G-H Eco-POWER METER

Hook Hook Hook Connector label

Expansion connector (male)

Chapter 3 Installation

3.1 Measured-circuit

・It is not impossible to use to measur e several loads by different str ai n power supply. ・Each unit (main unit, expansion unit (power measurement, power measurement + pulse output)) can

measure 2-circuit of s ingle-phase two-wire system, and 1-circuit of single-phase three-wire system or three-phase three-wire system. Each unit can be used with different phase and wire system. However be sure to check the wirin g car ef ully.

・It is impossible to measur e by only the expansion unit. Con nect expansion units to main unit.

Up to 7 expansion units are connected to 1 main unit. You can use with the combination of power measurement, power me asurement + pulse output, pul se input and analog input as expansion units.

*Power source system ・ Power source system is the electrical power system from one power source (normally one

transformer).

･KW2G can measure 1-system max. 16-circuits of 1P2W system and 1-system max. 8-circuit of 1P3W

and 3P3W system by connecting a main unit and expansion units (power measurement, power measurement + pulse out put ) .

・In order to measure seve r al systems, it is necessary to use one main unit for each system.

3.2 Connection between the main unit and the expansion unit

・Turn off the power of mai n unit w hen connecting expansion units. ・Peel off connector label on the side before connecting.

(Do not peel off connector labe ls w hen not connecting.)

・It expands by connecting each male connector to female connector. Female connector is on the other

side of male connector.

・After connecting, push t he hooks into the unit to fix the expansion unit. ・Up to 7 expansion units can be connected per one main unit.

Note) Communication will be stopped or the measurement data will be lost when the units are

removed or connected wh ile tur n on power.

KW2G / KW2G-H Eco-POWER METER

Close-up of Close-up of

3.3 DIN rail mounting

Connect all expansion units to the main unit before mounting DIN rail, then mount all connected units to DIN rail. Mount

1) Hang the unit on DIN rail.

2) Push it till making click sound and mount.

Note) Check the position of DIN hook (Fig.1) before mounting.

When several expansion units are connected and mounted to DIN rail, moving the hooks lower (Fig.2) makes mou nting easy. After mounting, r et ur n t o t he position of Fig.1.

Remove

1) Insert minus driver etc. to DIN hook and displace down below.

2) Lift it in the direction of the arr ow and remove it.

DIN hook position DIN hook position

Fig. 1 Fig. 2

KW2G / KW2G-H Eco-POWER METER

Terminal

Phase and wire

Terminal

Input voltage

(P1-P0)

(P1-P0-P2)

100-120VAC

(P1-P0-P2)

100-240VAC

3.4 Terminal arrangement

Be sure to wire correctly according to the terminal arrangement and wiring diagrams. After completing wiring, be sure to attach the terminal cover for safety reasons.

3.4.1 Main unit (common to AKW2010G and AKW2020G)

No. Function Screw

①

Top

② ③ ④ ⑤ ＋

Mid

⑥ － ⑦ ＋ ⑧ － ⑨ ＋

Bottom

⑩ － ⑪

The input vol t age to each terminal is as f ol l ows.

P1 P0 P2

Measured voltage input

P1-P0 common to operating

power supply

NC Vacant

Pulse output

Pulse input

RS485

M3.5

① ② ③ ④

⑤ ⑥ ⑦ ⑧

⑨ ⑩ ⑪

Measured

voltage input

Single-phase,

two-wire

Single-phase,

three-wire

Three-phase,

three-wire

①－② ①－②－③ ①－②－③

100-240VAC (100-240V～)

(100-120V～：3W)

(100-240V 3～)

(Line voltage)

(Phase voltage)

(Line voltage)

Caution for Wiring

1) Terminal fastening torque should be 0.5 to 0.6N･m for M3 screw and should be 0.8 to 1.0N･m for M3.5 screw. In case of using a crimping terminal, use it with insulating sleeve applicable to M3 screw or M3.5 screw.

2) To protect the device, it is necessary to install power switch and circuit breaker in the power supply circuit. And this has no built-in power switch, circuit breaker or fuse for measured volt age input parts . Therefore it is necessary to install them in the circuit near this unit.

3) We recommend a wire with the cross section of 0.75 to 1.25mm2 for power supply line and measured voltage input li ne.

4) Use with 10m or less of t he input line and 100m or less of the output line.

5) Use flame-resistant cable for each wiring.

<M3.5 screw> width: 6.6mm or less

<M3 screw> width: 5.8mm or less

KW2G / KW2G-H Eco-POWER METER

P1 P0 P2

440V 110V

Power supply side

1 2

3.5 Wiring Diagram

3.5.1 In case of using only main unit

Please connect a breaker (3 to 15A) to the power supply (voltage input) part for safety reasons and to protect the device.

Single-phase two-wire system

◆When measuring a load w ith r ated input voltage One CT is needed to measur e one load. The below shows that it measures 2-circuit using 2 CTs connect ed to connectors of unit.

Note) (1) When wiring CT, wire correct ly according to this, K for power supply side and L for load side. (2) 2 CTs should be same.

◆When measuring a load w ith ex ceed input voltage.

Voltage transformer (VT) i s needed when you measure a load with over rated input voltage. Use VT, its secondary sid e r at ing i s 110V. Grounding the secondary side of VT and CT is not necessary with low-voltage circuit.

Breaker

Use P1 and P0 for measuring 1-circuit of 1P2W. Short P2 and P1 for measuring 2-circuit.

KW2G / KW2G-H Eco-POWER METER

P1 P0 P2

Power supply side

440V 110V

Single-phase three-wire system/Three-phase three-wire system

◆When measuring a load w ith r ated input voltage Two CTs are needed to measure one load.

Note) (1) When wiring CT, wire cor r ect ly according to this, K for power supply side and L for load side. (2) 2 CTs should be same.

◆When measuring a load w ith ex ceed input voltage.

1 2 3 R N T R S T

Breaker

KW2G / KW2G-H Eco-POWER METER

3.5.2 In case of using main unit and connected expansion units

Please connect a breaker (3 to 15A) to the power supply (voltage input) part for safety reasons and to protect the device.

Single-phase two-wire system

◆When measuring a load w ith r ated input voltage

Note) (1) When wiring CT, wire cor r ect ly according to this, K for power supply side and L for load side. (2) Using all CTs for one unit sho uld be same.

◆When measuring a load with exceed input voltage. Voltage transformer (VT) i s needed when you measure a load with over rated input voltage. Use VT, its secondary sid e r at ing i s 110V. Even if the secondary side voltages of VT are same, when the power source system is different, one main unit is necessary for each power source system. (Refer to the previous 3.6.1 in detail.)

KW2G / KW2G-H Eco-POWER METER

Single-phase three-wire system/Three-phase three-wire system

◆When measuring a load w ith r ated input voltage

Note) (1) When wiring CT, wire cor r ect ly according to this, K for power supply side and L for load side. (2) Using all CTs for one unit s hould be same.

KW2G / KW2G-H Eco-POWER METER

Single-phase three-wire system and Single-phase two-wire system Three-phase three-wire system and Single-phase two-wire system

◆When measuring a load w ith r ated input voltage

Note) (1) When wiring CT, wire cor r ect ly according to this, K for power supply side and L for load side. (2) In order to measure a load with single-phase 2 wire system 100V, wire CT1 to R and CT2 to T. (3) Using all CTs for one unit should be same.

◆When measuring a load w ith ex ceed input voltage. Voltage transformer (VT) i s needed when you measure a load with over rated input voltage. Use VT, its secondary sid e r at ing is 110V. Even if the secondary side voltages of VT are same, when the power source system is different, one main unit is necessary for each power source system. (Refer to the previous 3.6.1 in detail.)

KW2G / KW2G-H Eco-POWER METER

3.5.3 In case of using simple measuring mode

It can measure electric power using only meas ur ed current with fixing voltage and power factor. You can use this function when it is impossible to input measured voltage due to the load situation or wiring conditions. Simple measuring is a function to grasp rough electric power of the measurement circuit without measuring voltage. Please connect a breaker (3 to 15A) to the power supply (voltage input) part for safety reasons and to protect the device.

[Caution]

During simple measuring, it doesn’t guarantee the accuracy because voltage and power factor

are fixed. Frequency of the operating power supply is displayed. Wiring example: Single-phase two-wire Single-phase three-wire/Three-phase three-wire

Note) (1) When wiring CT, wire correctly according to this, K for pow er supply side and L for load side. (2) Using all CTs for one unit should be same.

KW2G / KW2G-H Eco-POWER METER

Secondary current

Ammeter etc.

Eco-POWER

3.6 How to attach the Current Transformer (CT)

・One CT is needed for 1 unit when measuring 1P2W (2 CTs for 2-circuit). Two CTs are needed when

measuring 1P3W/3P3 W. Using all CTs for one unit should be the s ame.

・Check beforehand that the t hickness of the electric wire is s ma ller than the through-ho le of the CT. ・When connecting CT, connect the secondary side to the terminal of the main unit first, and after that

wire the primary side to a load electric wire. Incorrect order might cause an elect r ic shock or break CT.

・The CT has polarity. Wire correctly according to the K and L marks. Wrong direction can’t measure

correctly.

・When closing CT, check that there is no foreign materials on the divided face. And make sure it is

closed securely once the wire is in place; if not the measurement value will be not accurate.

・When CT’s cable is extended, it is possible to extend up to about 10m with the cable of AWG#22 or

more cross section under the environment without noise at all. Please use the thick cable as much as possible.

・Separate the wiring (strong electric part) of the measured voltage input terminal (operating power

supply terminal) from the CT c able. It may not satisfy the accuracy due to noise.

・Only same color housing of cab le and connector of CT can be connected.

That of different color (blu e and white) can't be connected.

◆To connect CT with secondary side current 5A

How to set for measuring by combination with CT (secondary side current 5A)

(1) Select 5A at CT type setting mode (CT-T). (2) Set the primary current of measured CT ( second ary side current 5A) at primary side current of

CT setting mode (CT-1). <ex> If the measured CT is 400 A/ 5A, set to ‘400’.

(3) Clamp the dedicated CT for 5A (AKW4801C), which is connected to the main unit first, to

secondary side of the CT (secondary side current 5A). CT direction (K→L) should be set for the commercial CT direction.

*Set the CT (secondary side current 5A) and the dedicat ed CT for 5A approximately 1m apart.

If the two CTs are set too close each other, it may not measure accurately due to magnetic field interference.

(Connection example) With Ammeter etc.

Power supply

Breaker

CT with 2nd current 5A

Load

L K

Dedicated CT for 5A

METER

KW2G / KW2G-H Eco-POWER METER

P.IN +

Secondary current

L K

Eco-POWER

Shorted or resistor less th an 0. 1 Ω

Without Ammeter

Power supply

Breaker

CT with 2nd current 5A

Load

Dedicated CT for 5A

METER

3.7 For input connection

●Pulse input (Main unit) ・Contact input

Use highly reliable metal plated contacts. Since the contact’s bounce time leads directly to error in the count value, use contacts with as short a bounce time as possible. In general, select 30Hz for max. counting speed.

・Non-contact input (Transistor input)

Connect with an open collector. Use the transistor with the following specifications. V I

=20mA min. I

=6μA max

CBO

=20V min.

CEO

Use transistors with a residual voltage of less than 2V when the transist or i s ON.

*Short-circuit impedan ce should be less than 1kΩ.

(When the impedance is 0Ω, drain current is approx. 7mA.) Open-circuit impedance should be more than 100k Ω.

・Input wiring

Please wire up to 10m by using a shielded wire or a metallic ele c t r ic wire tube individually.

⑦ ⑧

P.IN －

KW2G / KW2G-H Eco-POWER METER

Eco-POWER

METER

（－）

Insulated

transformer

Input equipment

(sensor etc.)

(Fig. A)

Good example

Eco-POWER

METER

(＋)

（－）

Insulated

transformer

Input equipment

(sensor etc.)

Eco-POWER

METER

(＋)

（－）

Auto transfo rmer

power supply

(Fig.B) No Good example

Do not use an auto-transformer.

Input equipment

(sensor etc.)

(Note) Operating power supply input part and measured voltage input are not insulated to pulse input parts. So the input equipment must have the power supply transformer in which the secondary side is not grounded with the primary and secondary sides insulated, in order to prevent interference of the power supply circuit when connecting the external input circuit. Be sure not to use an auto-transformer.

AC power supply

(＋)

Do not ground the secondary side.

AC power supply

KW2G / KW2G-H Eco-POWER METER

Power supply for Load

Plus common

Eco-POWER METER

Pulse (+)

Minus common

Eco-POWER METER

Power supply for Load

Pulse (+)

Load

○

Terminal Terminal

3.8 For Output connection

●Transistor output (Main unit) ・Since the transistor output is insulated from the internal circuit by a photo-coupler, it can be used both

as a plus common and minus co m m on.

Pulse (－)

・Wire up to 100m for output connection.

3.9 RS485 communication

・When using shielded cable for the RS485 trans m ission line, ground one end. Use a class D dedicated earth for grounding. Do not share a ground with other eart h lin es. ( Fi g. 1) ・Be sure to connect with daisy chain the RS485 transmission l ine between each unit. Do not use a splitter. (Fig.2) ・With a terminal station, R S485 (E) (No.10) and RS485 (-) ( No. 9) should be shorted.

*E terminal is not SG (sig nal ground) terminal. Do not ground shielded cable.

(Fig.1)

(Fig.2)

Correct wiring

Incorrect wiring

station station

KW2G / KW2G-H Eco-POWER METER

Conductor

Insulator

Resistance

(at 20℃）

HITACHI

Belden Inc. 9860

HITACHI

Belden Inc. 9207

0.75 mm2 or more

VCTF (JIS)

Cable

Section

Notes

Conductor Insulator

Jacket

Shield

Jacket

Recommended Cable Use the transmission cables shown below for Eco-POWER METER RS485 com m unication system.

Cable

Twisted-

pair

with shield

VCTF

Twisted-pair

with shield

VCTF

Size

1.25 mm (AWG16)

Max.16.8Ω/km

or more

0.5 mm2

(AWG20)

Max.33.4Ω/km

or more

(AWG18)

Conductor Insulator

Max.25.1Ω/km

Material Thickness

Polyethylene

PVC

Max.

0.5 mm

Max.

0.5 mm

Max.

0.6 mm

1) Use shielded type twist cables.

2) Use only one type of the transmission cables. Do not mix different types of the cables.

3) Use twist pair cables under a bad noise environment.

Cable

diameter

Approx.

8.5 mm

Approx.

7.8 mm

Approx.

6.6 mm

Applicable cable

KPEV-S

1.25 mm

×1P

KPEV-S

0.5 mm

×1P

0.75 mm2×2C

+ 105 hidden pages

Panasonic KW2G, KW2G-H User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1 Unit’s Outline

1.1 Unit’s Name and Model Numbers

1.2 Combination devices

1.3 Firmware

1.4 Option

1.5 Other tools

1.6 Measurement items

Chapter 2 Parts Name and Working

2.1 Parts Name

2.2 Key’s Functions

Chapter 3 Installation

3.1 Measured-circuit

3.2 Connection between the main unit and the expansion unit

3.3 DIN rail mounting

3.4 Terminal arrangement

3.4.1 Main unit (common to AKW2010G and AKW2020G)

3.5 Wiring Diagram

3.5.1 In case of using only main unit

3.5.2 In case of using main unit and connected expansion units

3.5.3 In case of using simple measuring mode

3.6 How to attach the Current Transformer (CT)

3.7 For input connection

3.8 For Output connection

3.9 RS485 communication