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AKW2010GB | KW2G Eco-Power Meter


KW2G Eco-Power Meter

*Photo may vary from actual product.

  • RoHS Compliant This product has been confirmed that it does not contain the 6 substances specified in EU RoHS Directive 2011/65/EU and the 4 substances specified in 2015/863/EU.  


Product Number AKW2010GB
Part Number AKW2010GB
Product Eco-POWER METER
Details Main unit
Product name KW2G Eco-Power Meter

As of August 09, 2022
Specifications and design of the products are subject to change without notice for the product improvement.

Spec Detail

Item Specifications
Product Number AKW2010GB
Part Number AKW2010GB

Measurement items Power measurement

Item Specifications
Integrated electric power(Active):kWh/MWh 0.00 to 9999.99 kWh to 9999.99 MWh,
0.00 to 9999999.99 kWh (when 9-digit display)
(Note):measure regeneration electric power. Integrated electrical power is not integrated (not subtracted) when detecting regeneration electric power.
Power measurement:Instantaneous electric power:Active:kW -9999.99 to 0.000 to 9999.99
(Note):While detecting regeneration electric power, minus is displayed on instantaneous active electric power and power factor.
Instantaneous electric power:Reactive:kvar -9999.99 to 0.00 to 9999.99
(Note):While detecting regeneration electric power, minus is displayed on instantaneous active electric power and power factor.
Instantaneous electric power:Apparent:kVA 0.00 to 9999.99
Current:R-current:A 0.000 to 6000.00
Current:N/S-current:A 0.000 to 6000.00 (calculated value)
Current:T-current:A 0.000 to 6000.00
Voltage:R(RS)-voltage:V 0.0 to 9999.9
Voltage:S(RT)-voltage:V 0.0 to 9999.9 (calculated value)
Voltage:T(TS)-voltage:V 0.0 to 9999.9
Electricity charge 0.00 to 999999
Conversion carbon dioxide value:kg-CO2 0.00 to 999999
Power factor:Displayed on the main unit -1.00 to 1.00 (without identify leading phase and lagging phase)
(Note):While detecting regeneration electric power, minus is displayed on instantaneous active electric power and power factor.
Frequency:Hz 47.5 to 63.0
Pulse count value 0 to 999999
(Note):Displayed digit of pulse counter differs according to the pre-scale set by pre-scale setting mode.

Measurement items Hour Meter

Item Specifications
OFF-time:Hour 0 to 99999.9
ON-time 1:Hour 0 to 99999.9
ON-time 2:Hour 0 to 99999.9
Maintenance time:Hour 0 to 99999.9
(Note):Maintenance time by using pulse input cannot be measured
Actual work time:Hour 0 to 99999.9
Ratio of ON-time 1:% 0.0 to 100.0
Ratio of ON-time 2:% 0.0 to 100.0

Accuracy

Item Specifications
Accuracy (without error in CT and VT) : Integrated electric power and Instantaneous electric power Within ± (2.0 % F.S. + 1 digit)
(at +20 ℃ +68 ℉, rated input, rated frequency, power factor 1)
*Accuracy coverage : 10 to 100 % of rated current
Accuracy (without error in CT and VT) : Current Within ± (1.0 % F.S. + 1 digit)
(at +20 ℃ +68 ℉, rated input, rated frequency, power factor 1)
*Accuracy coverage : 10 to 100 % of rated current
Accuracy (without error in CT and VT) : Voltage Within ± (1.0 % F.S. + 1 digit)
(at +20 ℃ +68 ℉, rated input, rated frequency, power factor 1)
Accuracy (without error in CT and VT) : Temperature characteristics Within ± (1.0 % F.S. + 1 digit)
(Range of -10 to +50 ℃ +14 to +122℉, rated input, power factor 1)
Accuracy (without error in CT and VT) : Hour meter ±(0.01% +1 digit) Monthly accuracy: ±280 sec. (at +20℃ +68℉)
Accuracy (without error in CT and VT) : Frequency characteristics Within ± (1.0 % F.S. + 1 digit)
(Frequency change ± 5 % based on rated frequency, rated input, power factor 1)

General specifications

Item Specifications
Rated operating voltage 100 to 240 V AC (Add to main unit)
Rated frequency 50 / 60 Hz common
Rated power consumption Main unit : 6 VA, Expansion unit (Power measurement, Power measurement and Pulse output, and Analog input) : 0.5 VA / unit, Expansion unit (Pulse input) : 1.0 VA /unit (240 V AC at +25 ℃ +77 ℉)
Allowable operating voltage range 85 to 264 V AC (85 % to 110 % of rated operating voltage)
Allowable momentary power-off time 10 ms
Ambient temperature -10 to +50 ℃ +14 to +122 ℉ (-25 to +70 ℃ -13 to +158 ℉ at storage)
Ambient humidity 30 to 85 % RH (at +20 ℃ +68 ℉) non-condensing
Display method LCD with backlight (green), Upper : 5-digit (7-segment 1-digit + 16-segment 4-digit), Lower : 6-digit (7-segment)
Number of connectable expansion units Max. 7 units
Power failure memory method EEPROM (more than 1,000,000 overwrite), Memory items : setting value and integral measuring value
Weight Main unit : 180 g, Expansion unit (Power measurement) : 80 g, Expansion unit (Power measurement and Pulse output, Pulse input, and Analog input) : 85 g

Communication specifications(RS-485 communication)

Item Specifications
Protocol MEWTOCOL / Modbus RTU (selectable with setting mode)
Transmission function -
Isolation status Isolated with the internal circuit
Number of connected units 99 units Max.
(Note1):For RS-485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co.,Ltd.).
(Note):When using SI-35, SI-35USB or PLC from our company (which can be connected up to 99 units), up to 99 Eco-POWER METER can be connected. In case using this system with the other devices, up to 31 Eco-POWER METER can be connected.
Transmission distance 1,200 m 3.937 ft Max.
(Note):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.
Transmission speed 2,400 / 4,800 / 9,600 / 19,200 / 38,400 / 57,600 / 115,200 bps (selectable with setting mode)
Transmission format Data length: 8-bit / 7-bit (selectable with setting mode)(Note) Parity: Not available / Odd number / Even number (selectable with setting mode) Stop bit: 1-bit / 2-bit (selectable with setting mode)
(Note):With Modbus RTU protocol, it works only with 8-bit.
Communication method Half-duplex
Synchronous system Synchronous communication method
Ending resistance 120 Ω approx. (built-in)

Communication specifications(USB communication)

Item Specifications
Transmission function Computer link (MEWTOCOL)
Isolation status Isolated with the internal circuit
Transmission speed 12 Mbps (Full-speed)

Pulse input specifications

Item Specifications
Input mode Addition (Fixed)
Max. counting speed 50 kHz / 30 Hz (Select with setting mode)
Pulse input (Min. input signal width) 0.01 ms (When 50 kHz selected) /
16.7 ms (When 30 Hz selected),
ON : OFF ratio = 1 : 1
Input signal Contact / No contact (open collector)
・Impedance when shorted : Max. 1 kΩ
・Residual voltage when shorted : Max. 2 V
・Impedance when open : Min. 100 kΩ
Output mode HOLD (Over count)
Prescale : Decimal point Setting possible up to under 3-digit
Prescale : Range 0.001 to 100.000 (Set with setting mode)

Pulse output (Transistor output) specifications

Item Specifications
Number of output point 1 point
Insulation method Optical coupler
Output type / Output capacity Open collector / 100 mA 30 V DC
Pulse width (when pulse output with integrated active electric power selected) 1 to 100 ms (selectable with setting mode)
(Note) : The min. pulse output cycle is 25ms in order to work correctly and output 1 to 10ms pulse output.
ON state voltage drop 1.5 V or less
OFF state leakage current 100 μA or less
Pulse output unit 0.001 kWh, 0.01 kWh, 0.1 kWh, 1 kWh, 10 kWh, 100 kWh / Power alarm(AL-P) / Current alarm(AL-C) / Stand-by power alarm(AL-S) / Counter(Cnt)(Note 3) / General purpose output(OUT) / Error alarm(Error)
(Note 1) : General-purpose output (OUT) and Error alarm (Error) are possible using main unit software AKW2010GB Ver. 1.05 or later and AKW2020GB Ver. 1.02 or later and expansion unit software AKW2160GB Ver.1.01 or later.
(Note 2) : The min. pulse output cycle is 25ms in order to work correctly and output 1 to 10ms pulse output.
(Note 3) : These count output specifications are only for the main unit and expansion unit AKW2160GB.
General purpose output Level output / Repeat cycle output / One-shot output
(Selectable with setting mode)
(Note): In order to use the general purpose output, it is necessary to set the output status ON or OFF via communications. In addition it doesn't work with the on-time and off-time set to under 0.1s.
Output ON-time, Output OFF-time 0.1 to 10.0s
(Selectable with setting mode)

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Accessories (Option)

KW2G Expansion unit
Product Number AKW2110GB
Part Number AKW2110GB
Product Eco-POWER METER
Details Expansion unit
Product name KW2G Expansion unit
KW2G Expansion unit
Product Number AKW2160GB
Part Number AKW2160GB
Product Eco-POWER METER
Details Expansion unit
Product name KW2G Expansion unit
no_image
Product Number AKW4506B
Part Number AKW4506B
Product name Through type Current Transformer (CT)


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