Panasonic KW2G Eco-POWER METER 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 A handling error could cause serious physical injury to an
operator and in the worst case could even be fatal.
●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.
CAUTION A handling error could cause serious physical injury to an operator
or damage to the equipment.
●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.
●Do not use at secondary side circuit of inverter. It might cause exothermic heat or
damage.
Copyright and trademark
● 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.
●Other company names and the product names are the trademarks or registered
trademarks of each company.

Introduction
Thank you very much indeed for purchasing
“KW2G Expansion unit (Pulse input)”.
In this manual, we explain the usage of “KW2G Expansion
unit (Pulse input)” in detail.
Please use it correctly after understanding the content
enough.

TableofContents
Chapter 1 Unit’s Outline ...........................................................................................................................3
1.1 Unit’s Name and Model Numbers............................................................................................................ 3
1.2 Combination devices ............................................................................................................................... 3
1.3 Other tools ............................................................................................................................................... 4
1.4 Measurement items ................................................................................................................................. 4
Chapter 2 Parts Name and Working.........................................................................................................5
2.1 Parts Name .............................................................................................................................................. 5
Chapter 3 Installation ...............................................................................................................................6
3.1 Measured-circuit ...................................................................................................................................... 6
3.2 Connection between the main unit and the expansion unit.....................................................................6
3.3 Terminal arrangement ............................................................................................................................. 7
3.4 For input connection ................................................................................................................................ 8
3.5 Low Voltage Directive .............................................................................................................................. 8
Chapter 4 Settings....................................................................................................................................9
4.1 Setting for Expansion unit (pulse input)................................................................................................... 9
4.2 Setting Mode Explanation for Expansion unit (pulse input)...................................................................11
4.2.1 Mode 2.......................................................................................................................................... 11
4.2.2 Mode 4.......................................................................................................................................... 12
Chapter 5 Display of each Value ............................................................................................................13
5.1 Unit change............................................................................................................................................ 13
5.2 Pulse count value / Pulse input status ................................................................................................... 13
Chapter 6 Specifications.........................................................................................................................14
6.1 Unit......................................................................................................................................................... 14
6.2 Pulse input ............................................................................................................................................. 15
6.3 Applicable standard ............................................................................................................................... 15
Chapter 7 Mounting................................................................................................................................16
7.1 Dimensions ............................................................................................................................................ 16

Cautions before using
■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 -10 to 50 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.
・Do not add an excess power to the display. It might break the inner liquid crystal.
■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.
・It takes time to update monitor display when many units are connected. However, data
update cycle is not changed.
・The unevenness will be large when using outside of rated frequency.
In this case, set the shift average frequency big.
■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.

KW2G Eco-POWER METER Expansion unit (Pulse input)
Chapter 1 Unit’s Outline
KW2G Eco-POWER METER Expansion unit (Pulse input) measures pulse signal from a sensor by
connecting to the main unit.
1.1 Unit’s Name and Model Numbers
Product name Model No. Connecting method
Pulse input terminal M3＋screw
KW2G Eco-POWER METER
Expansion unit (Pulse input) AKW2152G *Connect to main unit with the connector.
Note)
It is impossible to measure by only the expansion unit. Connect expansion units to the main unit.
Up to 7 expansion units are connected to 1 main unit.
Use KW2G main unit ver.1.02 or later, or KW2G-H main unit.
If the main unit version is before this, you need to upgrade the main unit.
1.2 Combination devices
●Main unit
Product name Model No. Log function Connecting method
・Power supply terminal
(Voltage input terminal)
M3.5 ＋ screw
KW2G
Eco-POWER METER
Main unit
AKW2010G Not available
・Pulse I/O terminal M3＋screw
・ RS485 communication terminal M3＋screw
・Current transformer(CT) Connector
KW2G-H
Eco-POWER METER
Main unit SD card type
AKW2020G Available
・USB communication Connector
●Expansion unit
Product name Model No. Connecting method
Current transformer (CT) ConnectorExpansion unit
(Power measurement) AKW2110G *Connect to main unit with the connector.
Current transformer (CT) Connector
Pulse output terminal M3＋screw
Expansion unit
(Power measurement +
Pulse output)
AKW2160G
*Connect to main unit with the connector.
Analog input terminal M3＋screw
Expansion unit
(Analog input ) AKW2182G *Connect to main unit with the connector.
*In this manual, we explain the usage of “KW2G Expansion unit (Pulse input)”.

KW2G Eco-POWER METER Expansion unit (Pulse input)
1.3 Other tools
Product name Functions Model No
Data collection software
KW Monitor
・Monitoring and logging the
measured values.
Download from our
website.
Free of charge
Power display tool
KW View
・It makes graph by using data from
Eco-POWER METER
Download from our
website.
Free of charge
Eco-POWER METER Version Upgrade Tool
KW Version Upgrade Tool
・You can upgrade the farmware of
main unit and expansion unit.
・USB driver is included.
Download from our
website.
Free of charge
Note) Members registration is required to download.
1.4 Measurement items
Item Data range
Pulse count value 0 to 999999
Note) Displayed digit of pulse count value differs according to the pre-scale set by pre-scale setting
mode.

KW2G Eco-POWER METER Expansion unit (Pulse input)
Chapter 2 Parts Name and Working
2.1 Parts Name
Front view
<Expansion unit (Pulse input)>
(with cover) (no cover)
Side view
<Expansion unit (Pulse input)>
Connector label
Peel off before connecting
expansion unit
Do not peel off when not
connecting.
Hook: 2 points
Push the hooks into the unit to fix the expansion unit.
Input terminals
Cover

KW2G Eco-POWER METER Expansion unit (Pulse input)
Chapter 3 Installation
3.1 Measured-circuit
・It is impossible to measure by only the expansion unit. Connect expansion units to the main unit.
Up to 7 expansion units are connected to 1 main unit. You can use with the combination of
AKW2110G, AKW2160G, AKW2152G and AKW2182G as expansion units.
3.2 Connection between the main unit and the expansion unit
・Turn off the power of main unit when connecting expansion units.
・Peel off connector label on the side before connecting.
(Do not peel off connector labels when 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 the 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 while turn on power.
Hook Hook Hook Connector label
Expansion connector (male)