KW9M Eco-POWER METER

Rating/ Performance

OVERVIEW OF FUNCTIONS

*

IEC 61557-12 is an international standard on performance measuring and monitoring devices (PMD).

Measurement items

*1

The data display range is the numerical value range which can be displayed by the main unit display section and not the allowable measurement range. *1 Instantaneous value

*2

Instantaneous value

*3

The value measured in 0.01Wh corresponds to reading via RS-485 communication only.

Power quality

*1

Only advanced type

*2

Total harmonic distortion

*3

2nd to 31st

*4

If the voltage to be measured is not the rated (commercial) frequency, it may take time for THD (total harmonic distortion) to stabilize.

Demand measurement

*

Please use this demand function as your standard.
The demand value calculated with this function is not guaranteed.

*1

Only advanced type

*2

Only when 30-min demand is set.

Accuracy

*1

IEC62053 is the international standard for electrical power measuring devices.

*2

Current less than 5% of rated value may be outside of accuracy assurance range according to CT setting (maximum tolerance: 0.5%).

General specifications

MEASUREMENT SPECIFICATIONS

Notes:

1)

Without error of current transformers (CT) and voltage transformers (VT)

2)

As to the current under 5 % of rating, it may not satisfy the accuracy according to CT setting (max. error; 0.5 %).

*

It measures from 0.1 % of CT secondary current.

*

IEC62053 is the international standard for Electricity metering equipment.

Output specifications (for AKW92112)

Note:

Varistor is mounted internal as a protection element.
Install a protective device in case of using at the place where it effects by surge.

<How to calculate>

(1)

Calculate the appropriate power to be measured from the unit of the integral power pulse output.
Unit for pulse output > (Max. measurement power [kW]) / (3,600 sec × 1 pulse/sec)
When the pulse output unit is 0.001, the maximum power that can be properly measured by pulse output is 3.6 kW (3,600 sec × 1 pulse/sec × 0.001).
If the load is higher than this value, the output pulses cannot keep up with it, and the number of pulses becomes small.
In such cases, set the pulse output unit to the value immediately above.

(2)

Calculate the appropriate pulse output unit from the instantaneous power to be measured.
(Max. measurement power [kW]/3,600 sec × 1 pulse/sec) < Unit for pulse output
When the maximum power to be measured is 10 kW, the pulse output unit required for the correct pulse output is 0.01 kWh/pulse, which is the value immediately above this one:
10 W/3,600 sec × 1 pulse/sec = 0.0027

Notes:

(1)

If the pulse output unit is set to output one pulse or more per second, the Eco- POWER METER® cannot correctly output pulses.

(2)

If the pulse output OFF time is set too short, count errors by connected counters, PLCs (Programmable Logic Controllers) may occur.

Input specifications (for AKW92112)

DEMAND MONITOR AND CONTROL SPECIFICATIONS

Standard type supports only marked items(●).

Notes:

1)

Available when sliding block interval demand or fixed block interval demand is selected.

2)

The time span can be arbitrarily set only for sliding block interval demand and fixed block interval demand.

COMMUNICATION SPECIFICATIONS

<RS-485>

Notes:

1)

MEWTOCOL is the protocol for PLC from Panasonic. DL/T645 is the China powermeter standard. Only DL/T645-2007 is supported.

2)

For RS-485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co., Ltd.). When using SI-35, SI-35USB or PLC from our company (which can be connected up to 99 units), up to 99 can be connected.
In case using this system with the other devices, up to 31 can be connected.

3)

Please check with the actual devices when some commercial devices with RS-485 interface are connected. The number of connected devices, transmission distance, and transmission speed may be different according to using transmission line.

Dimensions

• Unit: mm in

Panel cut-out

Keep enough space for several mountings.Recommended space: 130 mm5.12 inthe left, right, top and bottom from center of the unit

1)

Remove the mounting clips from the unit.

2)

Insert the unit from the front of the panel.

3)

Attach the mounting clips at the both side of the case and secure in place with the screws.
· Applicable panel thickness: 1 to 5 mm 0.04 to 0.20 in

Panel mounting

TERMINAL ARRANGEMENT AND WIRING DIAGRAMS

Terminal 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, to protect the device and ease of maintenance.
  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.
• Do not open the secondary side of CT while the primary side current is energized. Do not remove the terminal block while the primary side current of CT is energized. These actions may result in electric shock or CT breakdown.

After use, remove the label, take out the battery, and dispose of it according to the applicable regional (municipal) rules.

&ltSpecifications of terminal block A/B>
Screw size: M2.5
Tightening torque: 0.4 to 0.5 N•m
Applicable wire:(Crimp-type terminal is recommended.)
・Single wire 0.13 to 4 mm² (AWG26 to 12)
・Stranded wire 0.2 to 4 mm² (AWG24 to 12)
・for 2 pcs.
Single wire / Stranded wire 2 pcs.
0.5 to 2.1 mm² (AWG20 to 14)

<Specifications of terminal block C>
Screw size: M2.0
Tightening torque: 0.2 to 0.25 N•m
Applicable wire: (Crimp-type terminal is recommended.)
・Single wire 0.08 to 1.5 mm² (AWG28 to 16)
・Stranded wire 0.2 to 1.5 mm² (AWG24 to 16)
Stripping length: 7 to 8 mm 0.276 to 0.315 in

Terminal arrangement

* The N-phase measurement is available for the advanced type only.

Wiring diagrams

* Connect CTn for the N-phase measurement. CTn is not necessary for normal measurement.

■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.

Cautions For Use

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.

Please use the Unit according to the specifications described in this manual. Otherwise, it may malfunction or cause fire and an electric shock.

• Where the unit will be exposed to direct sunlight and where the ambient temperature is outside the range of -25 to 55 ℃.
• 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

Installation

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

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

• 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.

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