Panasonic kw9m User Manual

Cautions for Your Safety

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

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 the whole

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 could cause damage to the

lithium battery or other electronic parts.

●Do not open the secondary side of CT during power on the primary side current.

It might cause electric shock or CT breakdown.

CAUTION

●To prevent abnormal exothermic heat or smoke generation, use this product at the

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.

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

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.

●Never remove the terminal block under applying current to load.

It might cause electric shock or CT breakdown.

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

damage.

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 stiffly refuse the reproduction of without permission from this manual.

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

and Modbus is the registered trademark of Schneider Electric.

●Other company names and the product names are the trademarks or registered

trademarks of each company.

Introduction

Thank you very much indeed for purchasing “KW9M Eco-POWER METER”. In this manual, we explain the usage of “KW9M Eco-POWER METER” in detail. Please use it correctly after understanding the content enough.

Table of Contents

Cautions before using ............................................................................................................................ⅰ

Chapter 1 Unit’s Outline

1.1 Measurement outline ............................................................................................................................... 1

1.2 Measurement items ................................................................................................................................. 1

Chapter 2 Parts Name and Working

2.1 Parts Names ............................................................................................................................................ 2

2.2 Key’s functions......................................................................................................................................... 3

Chapter 3 Wi

3.1 Main unit terminal arrangement ............................................................................................................... 4

3.2 Wiring Diagrams ...................................................................................................................................... 5

3.3 How to attach the Current Transformer (CT)........................................................................................... 7

3.4 RS485 Communication............................................................................................................................ 9

Chapter 4 S

4.1 Setting Flow ........................................................................................................................................... 11

4.2 Password entry ...................................................................................................................................... 12

4.3 Password initialize ................................................................................................................................. 13

4.4 How to Set ............................................................................................................................................. 14

4.4.1 Settings for power measurement ................................................................................................. 14

4.4.2 Settings for communication .......................................................................................................... 16

4.4.3 Settings for optional functions ...................................................................................................... 18

4.4.4 Password setting .......................................................................................................................... 21

4.4.5 Confirmation window .................................................................................................................... 22

ring ......................................................................................................................................4

ettings..................................................................................................................................10

Chapter 5 Display of each Value

5.1 Working of Monitor Display.................................................................................................................... 23

5.1.1 Instantaneous power.................................................................................................................... 31

5.1.2 Instantaneous power of each phase / each circuit....................................................................... 32

5.1.3 Total integral power...................................................................................................................... 32

5.1.4 Total integral export power........................................................................................................... 33

5.1.5 Integral power of each phase / each circuit.................................................................................. 34

5.1.6 Integral export power of each phase / each circuit ...................................................................... 35

5.1.7 Current.......................................................................................................................................... 36

5.1.8 Voltage ......................................................................................................................................... 36

5.1.9 Power factor ................................................................................................................................. 37

5.1.10 Frequency .................................................................................................................................. 37

5.1.11 Conversion value for integral active power ................................................................................ 37

5.1.12 Conversion value for integral export power................................................................................ 38

5.1.13 Temperature............................................................................................................................... 38

Chapter 6 Communications

6.1 Communication Procedures .................................................................................................................. 39

6.2 Communication timing ........................................................................................................................... 39

6.3 MEWTOCOL Communication................................................................................................................ 40

6.3.1 Overview of MEWTOCOL-COM (RS485) .................................................................................... 40

6.3.2 Data Register List......................................................................................................................... 41

6.3.3 Error Codes .................................................................................................................................. 45

6.3.4 Command..................................................................................................................................... 46

6.4 MODBUS (RTU) Communication .......................................................................................................... 48

6.4.1 Overview of MODBUS (RTU)....................................................................................................... 48

6.4.2 Data Register List (MODBUS communication) ............................................................................ 51

6.5 DL/T645-2007 communication............................................................................................................... 57

6.5.1 Overview of DL/T645-2007 .......................................................................................................... 57

6.5.2 Data list......................................................................................................................................... 63

6.6 How to install USB driver ....................................................................................................................... 65

Chapter 7 Specifications.........................................................................................................................66

7.1 Main unit ................................................................................................................................................ 66

7.2 Input Specifications................................................................................................................................ 67

7.3 Communication Specifications............................................................................................................... 68

7.4 Self-diagnostic function.......................................................................................................................... 69

7.5 Power Failure Memory........................................................................................................................... 69

...........................................................................................................................1

.........................................................................................................2

............................................................................................................23

....................................................................................................................39

Chapter 8 M

8.1 Dimensions ............................................................................................................................................ 70

8.2 Panel mounting...................................................................................................................................... 70

ounting................................................................................................................................70

8.1.1 Main unit....................................................................................................................................... 70

Cautions before using

■ About this product

Eco-POWE METER us designed chiefly to manage saving energy. It is neither nor can it be legally used for billing.

■ Installation environment

◇Do not use the Unit in the following environments.

・Where the unit will be exposed to direct sunlight and where the ambient temperature is outside

the range of -25 to 55 C.

・Where the ambient humidity is outside the range of 30 to 85 % RH (at 20℃), non-condensing

and where condensation might occur by sudden temperature changes

・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 exposed to water, oil or chemicals ・Where organic solvents such as benzene, paint thinner, alcohol, or strong alkaline solutions

such as ammonia or caustic soda might adhere to the product

・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-voltage device, power line, power device. ・Where the place near a machinery with transmission function such as amateur 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. Otherwise, it

may malfunction or cause fire and an electric shock.

・Connect to the power supply in compliance with the rating. ・Refer to the wiring diagram to ensure proper wiring for the power supply, input and output. ・Do not perform wiring or installation with a live line. It may also lead to circuit burnout or fire by

way of the secondary CT side opening.

■ Installation

・Eco-POWER METER is designed to be used in a control panel. ・The power supply terminal and voltage input terminal of the main unit is common. Therefore if

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

・Installation and wiring must be performed by expert personnel for electrical work or electric

piping.

・Never remove the terminal block under applying current to load.

It might cause electric shock or CT breakdown.

・Do not add an excess power to the display. It might break the inner liquid crystal. ・Although the case is made from fireproof resin, do not mount it next to flammable materials. Also,

avoid placing it directly on top of materials that catch fire easily.

・If the operating power supply surge exceeds the following value, the internal circuit could be

destroyed, so be sure to use a surge absorption element.

Surge voltage 6,000V

Standard surge waveform The above value is the surge-voltage resistance at ± (1.2/50) μs of single-polarity full-wave voltage.

Surge wave form [± (1.2/50) μs single-polarity full-wave voltage]

100

Surge voltage (%)

1.2

Peak

Time (μs)

・External noise up to the level shown below is treated as noise voltage, but levels higher than this

could lead to malfunctioning or damage to the internal circuit. Although the case is made from fireproof resin, do not mount it next to flammable materials.

Between operating power supply terminals

Noise voltage 1,500V Noise wave form (noise simulator) Rise time: Pulse width: 1 μs, 50 ns Polarity: Cycle: 10 ms

Note) Accurate measurement may not be possible if excessive noise gets added to the input line.

･This product is designed to be used only with our options.

Options from other companies are not compatible.

■ As to measurement

･If there is some distortion by harmonic or waveform, it may not measure correctly.

Please check with the actual system before adopts it.

・It might not measure an instantaneous current such as an inrush current or an welding 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 winding current, Load with ferromagnetic field ・Power factor operation is a method assuming balanced load. The error might be big when it

measures unbalanced load.

■ Static electricity

・Discharge static electricity touching the grounded metal etc. when you touch the unit. ・Excessive static electricity might be generated especially in a dry place.

■ Cleaning

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

discolored.

■ Power supply

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

The breaker that connects to the voltage input part must arrange at the position easily reached, and display shows it is the breaker of the equipment.

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

■ Before power on

Please note the following points 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 wiring nor the power-supply voltage are wrong. ・Tighten the installation screw and the terminal screw surely. ・Use an electric wire applicable to the rated current.

■ Before change the setup

Set the password carefully. In order to avoid unexpected change the settings, it can set password. However, if you forget the password you can’t change the settings. We recommend you to note the password when you set and change the password.

KW9M Eco-POWER METER

Chapter 1 Unit’s Outline

With KW9M Eco-POWER METER, electrical power (voltage, current, etc.), power factor, frequency, etc are measured using AC voltage and AC current input via one of the following systems: single-phase two-wire system, single-phase three-wire system, three-phase three-wire system or three-phase four-wire system. This has built-in thermistor to measure the temperature of installation place such as inside the panel board for your reference.

■Eco-POWER METER is designed chiefly to manage saving energy. It is neither intended nor can it be legally used for billing.

Model number AKW91110

Model name KW9M Eco-POWER METER Standard type

1.1 Measurement outline

Single-phase two-wire

Phase/Wire system

Applicable power system 100V system, 200V system, 400V system

Single-phase three-wire Three-phase three wire Three-phase four-wire

(1P2W) (1P3W) (3P3W) (3P4W)

(common)

Measurement circuit 1-circuit (when measuring 1P2W: max. 3-circuit)

Input measurement voltage 0 to 500VAC

Input measurement current 1 to 4000A

Applicable current sensor Secondary side current: 1A or 5A

1.2 Measurement items

Item Unit Display data range

Integral power

(import)

Integral power

(export)

Instantaneous

power

Current A 0.000 to 8000.0 *1

Voltage (phase / line) V 0.00 to 99999 *1

Frequency Hz 0.00 to 99.99 *1 (Fixed 2 places of decimal)

Active kWh

Reactive kvarh

Apparent kVAh

Active kWh

Reactive kvarh

Active kW

Reactive kvar

Apparent kVA

Power factor

0.000 to 9999999.9

-99999 to 0.000 to 99999

-1.000 to 0.000 to 1.000 (Fixed 3 places of decimal)

Conversion value 0.000 to 9999999.9

Temperature degree C

*1 ‘Display data range’ is the range to be able to indicate with the main unit display, it is not a range that

can be measured.

-100.0 to 0.0 to 100.0 *1

(Fixed 1 place of decimal)

KW9M Eco-POWER METER

Chapter 2 Parts Name and Working

2.1 Parts Names

*1 Auxiliary mark [LEAD] [LAG] indicates the phase difference between voltage and current.

1 Item indicator

2 Auxiliary mark Measuring mode Indicate the power condition *1 3 TX/RX mark Measuring mode Blinking while communication 4 Load ratio indicator Measuring mode Indicate the ratio of load (current) for the rating 5 Lock mark Measuring mode Lighting while in lock mode

Unit marｋ

Measurement

value

8 Keys Use to operate the unit

9 Terminal block A 10 Terminal block B 11 USB port USB communication port 12 Mounting clip Use to panel mounting (screws:M4x10mm)

When current phase delays to voltage phase, [LAG] is indicated. When current phase leads to voltage phase, [LEAD] is indicated. When power factor is ‘1’, ‘0’ and ‘-1’, it doesn’t display [LEAD] nor [LAG].

Measuring mode Indicate the measuring item

Setting mode Indicate the setting item

Measuring mode Indicate the measuring unit Measuring mode Indicate the measuring value

Setting mode Indicate the setting value

10 11 12

KW9M Eco-POWER METER

2.2 Key’s functions

Key Functions

<MODE>

<SET> Setting mode Set setting items and setting values <SET>

(continuous 3-sec)

●Lock mode

It is the mode makes all keys unable. In this mode, you can not input by any keys. When you press <SET> continuously for about 3sec., lock mark is displayed. Press <SET> continuously for about 3sec. again to release Lock mode. When it set to use auto-display functions, the display items are changed automatically. Refer to 4.4.3 setting for optional functions for auto-display functions.

Measuring mode Shift to setting mode

Setting mode Shift to setting confirmation mode and measuring mode

Measuring mode All keys locked

Lock mode Release the lock mode

Measuring mode Select measuring item to display <SHIFT/▽>

Setting mode Select a setting value

KW9M Eco-POWER METER

Chapter 3 Wiring

Be sure to wire correctly according to the terminal arrangement and wiring diagrams. Please connect a fuse or a breaker to power supply part for safety reasons and to protect the device. This has no built-in power switch, circuit breaker or fuse for measured voltage input parts. Therefore it is necessary to install them in the circuit near this unit.

Do not turn on the power supply or input until all wiring is completed.

3.1 Main unit terminal arrangement

◆Common for terminal block A, B

Screw size: M2.5 Tightening torque: 0.4 to 0.5Nm Applicable wire:

(Crimp-type terminal is recommended.)

･single wire 0.13 to 4mm ･stranded wire 0.2 to 4mm

･for 2 pcs.

single wire / stranded wire 2pcs.ｘ0.13 to 2.1mm

Stripping length: 6 to 7 mm

●Terminal block A (upper) 10P

Terminal

number

Functions

1 2 3 4 5 6 7 8 9 10

L ＋ N －

AUX

(Power supply)

V1 V2 V3 Vn NC SG

Measured voltage input

vacant

●Terminal block B (lower) 8P

Terminal

number

Functions

1 2 3 4 5 6 7 8

K L K L K L

CT1 CT2 CT3

NC NC

Measured current input vacant

The input voltage to each terminal is as follows.

Terminal Phase and wire system Terminal No. Input voltage

Power supply

Measured

voltage

input

Single-phase two-wire

Single-phase three-wire

Three-phase three-wire

Three-phase four-wire

1 - 2

(L+ - N－)

3 - 6 (V1-Vn) 3 - 5 - 6

(V1-V3-Vn)

3 - 5 - 6

(V1-V3-Vn) 3 - 4 - 5 - 6

(V1-V2-V3-Vn)

85-264V AC [ 85-264V ] 100-300V DC [100-300V ]

0-500VAC [0-500V ] (L-L)

0-500VAC [0-500V :3W] 0-250VAC [0-250V :3W]

0-500VAC [0-500V 3 ] (L-L)

0-500VAC [0-500V 3 ] 0-289VAC [0-289V 3N ]

(AWG26 to 12)

(AWG24 to 12)

(AWG26 to 14)

A ＋ B －

RS485

(L-L)

(L-N)

(L-L)

(L-N)

KW9M Eco-POWER METER

3.2 Wiring Diagrams

Please connect a breaker or a fuse to the power supply and voltage input part for safety reasons and to protect the device. ･Recommended breaker: 3 to 15A

･Recommended fuse : Time-lag fuse rated current 2A

Grounding the secondary side of VT (Voltage transformer) and CT (Current transformer) is not necessary with low-voltage circuit. *When using several CTs, set each CT approximately 1m apart. If the two CTs are set too close each other, it may not measure accurately due to magnetic field interference.

◆When measuring a load with rated input voltage

Single-phase two-wire system *One CT is needed to measure single-phase two-wire system. *2 CTs are needed to measure 2-circuit and 3 CTs are needed to measure 3-circuit.

*To measure 2-circuit, wire 3 and 4. To measure 3-circuit, wire 3 and 4 and 5.

Single-phase three-wire/Three-phase three-wire *2 CTs are needed to measure single-phase three-wire system, three-phase three-wire system.

KW9M Eco-POWER METER

Three-phase four-wire system *3 CTs are needed to measure three-phase four-wire system.

◆When measuring a load with exceed input voltage

Voltage transformer (VT) is needed when you measure a load with over input voltage. Use a VT, those secondary voltage rating is 110V. Grounding the secondary side of VT and CT is not necessary with low-voltage circuit.

KW9M Eco-POWER METER

3.3 How to attach the Current Transformer (CT)

DANGER

・Use CT that the secondary side current is 5A or 1A, the rated burden 0.5VA or more. ・One CT is needed for 1 unit when measuring 1P2W (2 CTs for 2-circuit, 3CTs for 3-circuit). Two CTs

are needed when measuring 1P3W/3P3W. Three CTs are needed when measuring 3P4W. Using all CTs for one unit should be the same.

・Use the applicable wire, or it might cause a breakdown, burnout or electric shock. ・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 electric shock or break CT.

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

correctly.

･If there is some distortion by harmonic or waveform, it may not measure correctly. Please check with the actual system before adopts it. ・Separate the wiring (strong electric part) of the measured voltage input terminal (operating power

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

●Never open the secondary circuit of CT under applying current to load.

●Never remove the terminal block under applying current to load.

Will cause electric shock or breakdown CT

KW9M Eco-POWER METER

◆How to connect CT

(1) Power off the measured devices.

(2) Install applicable CT. (3) Remove terminal block of KW9M. (4) Connect CT to the terminal block. (5) Insert terminal stand surely. (6) After confirm all wiring correct, turn on the power of the load and KW9M.

(Connection example)

* Connect CT wiring and terminal block surely.

It will cause CT breakdown.

* Never remove the terminal block under applying current to

load. It will cause electric shock or breakdown CT.

Power supply

Breaker

Primary side current

Ammeter etc.

Without Ammeter

Secondary current

CT with 2nd current 1A/5A

Load

◆How to set the parameters for CT

(1) Select CT type (CT-T) according to the using CT.

(Select ‘5A’ if secondary side current of using CT is 5A. Select ‘1A’ if secondary side current

of using CT is 1A.)

(2) Set the primary current of measured CT at primary side current of CT setting mode (CT-1).

< ex > If the measured CT is 400A/1A or 400A/5A, set to”400”.

(3) Connect CT according to the CT direction, power side (K) to load side (L).

KW9M Eco-POWER METER

3.4 RS485 Communication

・When using shielded cable for the RS485 transmission line, ground one end.

Use a class D dedicated earth for grounding. Do not share a ground with other earth lines. (Fig. 1)

・ For terminal stations of both side including the upper device, termination resistors should be

connected. KW9M Eco-POWER METER doesn’t have any built-in termination resistors.

Connect 120Ω, 1/2W or more termination resistor between [A+] and [B-] of Eco-POWER METER that

is connected the end of RS485 transmission line. The RS485 transmission line shielded cable should be grounded at the end KW9M Eco-POWER METER. (Fig. 1)

・Be sure to connect with daisy chain the RS485 transmission line between each unit.

Do not use a splitter. (Fig. 2)

・To avoid noise, separate the transmission line from high-voltage line (power supply, voltage line).

(Fig.1)

(Fig.2)

Correct wiring

○

Incorrect wiring

◆How to connect KW9M and the other devices with 2-wire system

Terminal Terminal

KW9M Eco-POWER METER

Chapter 4 Settings

You can set parameters for measuring and the other functions using the keys on Eco-POWER METER. After wiring Eco-POWER METER and CT, power on and set the parameter for power measurement, Eco-POWER Meter can measure the electric power. In order to use the other functions, set other parameters according to your use.

◆Keys’ functions at setting mode

<MODE> Shift to setting mode

<SET> Set the items and values

◆Parameters for power measurement

Item Range Initial value

Phase/Wire system 1P2W, 1P3W, 3P3W 3P4W 1P2W CT type 1, 5 [A] 5A Primary side current of CT 1 to 4000 [A] 5A VT ratio 1.00 to 600.00 1.00 Conversion rate (P) 0.00 to 99.99/1kWh 10.00 Conversion rate (-P) 0.00 to 99.99/1kWh 10.00

◆Parameters for communication

Item Range Initial value

Protocol

Device number

Transmission speed 38400, 19200, 9600,4800, 2400, 1200 [bps] 19200

Transmission format

Stop bit 1,2 1 Response time 1 to 99 [ms] 5

◆Parameters for optional functions

Item Range Initial value

Auto-off 0 to 99 [min.] 1 Luminance 1, 2, 3, 4, 5 (1: dark to 5:light) 3 Auto display start 0 to 99 [min.] 10 Display cycle 1 to 99 [sec.] 5 Temperature correction -100.0 to 100.0 0.0 Reset all integral value YES, NO NO Reset integral value 1 YES, NO NO Reset integral value 2 YES, NO NO Reset integral value 3 YES, NO NO Version

◆Password

Item Range Initial value

Password change 0000 to 9999 0000

Select items and change values

MEWTOCOL, MODBUS(RTU), DL/T645-2007 MEWTOCOL 1 to 99 MODBUS(RTU) 1 to 247 DL/T645-2007 0 to 9999

8b-o(8bit odd), 8b-n(8bit none), 8bit-E(8bit even)

MEWTOCOL

8b-o

KW9M Eco-POWER METER

4.1 Setting Flow

Arrow mark means press each key

Measuring value

display

Enter password

【Power

measurement】

【Communication】

【Optional

functions】

Setting mode

【Password】

Conversion rate

Phase/Wire Protocol Auto-off Password

CT type Device number Luminance

Primary side

current of CT

VT ratio

(P)

(-P)

Stop bit

Response time

Transmission

speed

Transmission

format

Auto-display

Display cycle *1

Temperature

correction

Reset all

integral value

Version

Reset integral

value 1 *2

Reset integral

value 2 *2

Reset integral

value 3 *2

Confirmation mode

Setting confirmation

YES

Measuring value display

Press <SET> during each item is displayed to change the setting value. Press <MODE> to display the confirmation window. Select [YES] and press <SET> to decide the setting value. However no value is changed, the confirmation window is skipped and it displays the measuring vaolue display. *1 It skips when [0] is set at auto-display setting. *2 It skips when [YES] is selested at reset all integral value.

KW9M Eco-POWER METER

4.2 Password entry

It is necessary to enter password to shift to setting mode. Enter [0000] and shift to password setting mode when you set password at the first time. *When setting password, be careful for handling and note it.

Measuring value display

Press <MODE> and it shifts to password entry window.

Enter password from left to right using <ITEM/△>, <SHIFT/▽>.

Increase

Shift entered digit to the right

If the password is wrong, [FAIL] is displayed and it returns to the password entry window. *If you make wrong password 5 times, you can’t set 1-hour after.

Press <SET> after enter the password.

If the password is correct, it shift to setting mode of power measurement.

KW9M Eco-POWER METER

4.3 Password initialize

When you forget the password, initialize it in the following procedures. (Initial: [0000]) It is impossible to decode the set password.

Measuring value display

Return to the measuring value display

30 seconds

Press <MODE> and it shifts to password entry window.

Press <MODE> and <ITEM/△> for 30 seconds in the password entry window, and it shift to the password initialize window.

Not initialize : [NO] Initialize : [YES]

KW9M Eco-POWER METER

4.4 How to Set

■Set before measuring.

Select setting item with <ITEM/△> and press <SET>, and the value will be blinking. Set with <ITEM/△> and <SHIFT/▽>. When you select [YES] with the confirmation window and press <SET>, the setting values are

settled.

4.4.1 Settings for power measurement

Phase/Wire system SYST Select phase/wire system to measure.

Press <ITEM/△>, <SHIFT/▽> to select phase/wire system.

[Set list] 1P2W, 1P3W, 3P3W, 3P4W (initial: 1P2W) * When the system is not matched with the measure system, it doesn’t measure correctly.

CT type CT-T Select using CT type (secondary side current).

To use CT with secondary side current 5A; [5] To use CT with secondary side current 1A: [1]

Primary side current of CT CT-1 Set the primary side current of using CT. Enter the primary side current of CT that is set at CT type setting.

Primary side current of using CT is 400A: [400]

Press <ITEM/△>, <SHIFT/▽> to set.

[Set range] 1 to 4000 (initial:5)

Increase

decrease

Press <ITEM/△>, <SHIFT/▽> to select CT type.

[Set list] 5 (5A), 1 (1A) (initial: 5)

KW9M Eco-POWER METER

VT ratio VT Select the voltage input method, input voltage directly or uses a voltage transformer (VT: secondary side rating 110V) and set VT ratio.

Press <ITEM/△>, <SHIFT/▽> to set. [Set range] 1.00 to 600.00 (initial:1.00)

increase

decrease

Input directly without VT: [1.00] Use VT : [1.01 to 600.00]

*When input voltage is under 3V (VT ratio = 1), [0.0] is displayed and it doesn’t measure.

Conversion rate (P) RATE P Set the conversion rate per integral active power 1 kWh.

Press <ITEM/△>, <SHIFT/▽> to set.

[set range] 0.00 to 99.99/1kWh (initial:10.00)

increase

decrease

Conversion rate (-P) RATE -P Set the conversion rate per integral export power (-P) 1kWh.

Press <ITEM/△>, <SHIFT/▽> to set.

[set range] 0.00 to 99.99/1kWh (initial:10.00)

increase

decrease

KW9M Eco-POWER METER

4.4.2 Settings for communication

Protocol PROT Select protocol for of main unit via serial communication (RS485).

*When protocol is changed, device number, transmission speed (baud rate), transmission format, stop

bit and response time will be initialized.

Press <ITEM/△>, <SHIFT/▽> to select.

[Set list] MEWT(MEWTOCOL), MODr (MODBUS(RTU)), 645(DL/T645-2007)

(initial: MEWT)

Device number NO Set an individual device number for each unit when two or more units are connected to communicate via serial communication (RS485).

Press <ITEM/△>, <SHIFT/▽> to set. The setting range differs according to the protocol.

[Set range] MEWTOCOL: 1 to 99

MODBUS(RTU): 1 to 247 DL/T645-2007: 0 to 9999 (initial:1)

increase

decrease

Transmission speed (Baud rate) SPD Select the serial communication (RS485) transmission speed. Define the transmission speed according to the master’s (PLC etc.).

Press <ITEM/△>, <SHIFT/▽> to select.

[Set list] 1200, 2400, 4800, 9600, 19200, 38400 [bps]

(initial: 19200)

KW9M Eco-POWER METER

Transmission format FMT

*Select [8b-E] when [645] is set for the protocol.

Select serial communication (RS485) transmission format (Data length, Parity). Define the transmission format according to the master’s (PLC etc.).

Press <ITEM/△>, <SHIFT/▽> to select.

[Set list] 8b-o (8bit odd), 8b-n (8bit none), 8b-E (8bit even) (initial: 8b-o)

Stop bit STOP

*Select [1] when [645] is set for the protocol.

Select serial communication (RS485) stop bit.

Press <ITEM/△>, <SHIFT/▽> to select.

[Set list] 1, 2 (initial: 1)

Response time RESP

*Select 50 or more when [645] is set for the protocol.

Set serial communication (RS485) response time of main unit. When command is received, it sends response after setting response time passes.

Press <ITEM/△>, <SHIFT/▽> to set.

[Set range] 1 to 99 ms (initial: 5)

increase

decrease

+ 56 hidden pages

Panasonic kw9m User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1 Unit’s Outline

1.1 Measurement outline

1.2 Measurement items

Chapter 2 Parts Name and Working

2.1 Parts Names

2.2 Key’s functions

Chapter 3 Wiring

3.1 Main unit terminal arrangement

3.2 Wiring Diagrams

3.3 How to attach the Current Transformer (CT)

3.4 RS485 Communication

Chapter 4 Settings

4.1 Setting Flow

4.2 Password entry

4.3 Password initialize

4.4 How to Set

4.4.1 Settings for power measurement

4.4.2 Settings for communication