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From April 1, 2024, the terms "Panasonic Industrial Devices SUNX Co., Ltd." and "Panasonic Industrial Devices SUNX Tatsuno Co., Ltd."
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Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Energy Management Solutions > Eco Series (Simple Watt-Hour Meter/ Simple Power-On Counter/ Power-On Hour Meter) > KW1M Eco-POWER METER > Rating/ Performance

KW1M Eco-POWER METER

Discontinuation plan

	September 30, 2024

Rating/ Performance

Rating/ Performance

Measurement items

Item		Unit	Data display range
Instantaneous electric power (Active)		kW	0.00 to 9999.99
Integrated electric power (Active)		kWh/MWh	0.00 to 9999.99 MWh 0.00 to 9999999.99 kWh (when 9-digit display)
Current	R-current	A	0.0 to 6000.0
	S-current (Note 1)	A	0.0 to 6000.0
	T-current	A	0.0 to 6000.0
Voltage	R (RS)-voltage	V	0.0 to 9999.9
	S (RT)-voltage (Note 1)	V	0.0 to 9999.9
	T (TS)-voltage	V	0.0 to 9999.9
Electricity charge (Note 2)		-	0.00 to 999999
Conversion carbon dioxide value		kg-CO₂	0.00 to 999999
Power factor (Note 1)		-	0.00 to 1.00 [Identify leading phase (–) or lagging phase] (Only in range of phase angle θ = –90° to +90°)
Frequency (Note 1)		-	47.5 to 63.0 Hz
Hour meter	ON-time	h (Hour)	0.0 to 99999.9
Hour meter	OFF-time	h (Hour)	0.0 to 99999.9
Pulse counter (Note 1)		-	0 to 999999

Note: 1) Excluding AKW1110(B).
Note: 2) Eco-POWER METER is designed chiefly to manage saving energy. It is neither intended nor can it be legally used for billing.

General specifications

Item	AKW1111(B)	AKW1110(B)
Rated operating voltage	100 to 240V AC
Rated frequency	50 / 60 Hz common
Rated power consumption	6 VA (AKW1110(B)), 8 VA (AKW1111(B)) (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)
Breakdown voltage(initial)	Between the isolated circuits:2000V for 1min	A)Outer edge (case)－All terminals B)Between Insulated circuit ・Operating power supply terminals－ Analog input terminals ・RS485－All other terminals ・Pulse output terminals－All other terminals
Insulation resistance(initial)	Between the isolated circuits: 100MΩor more(measured at 500V DC)
Vibration resistance	10 to 55Hz (1cycle/min) single amplitude : 0.375mm(1h on 3 axes)
Shock resistance	Min. 294m/s² (5 times on 3 axes)
Display method	LCD with backlight Upper: green, 4-digit, 16-segment Lower: amber, 6-digit, 7-segment
Power failure memory method	EEPROM (more than 100,000 overwrite)
Weight	170 g approx.

Electric power input specifications

Item			Specifications
Item			AKW1111(B)	AKW1110(B)
Phase and wire system			Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system Three-phase four-wire system (common)	Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system (common)
Input voltage	Rating		1P2W : 0-440V AC (Line voltage) 1P3W : 0-220V AC (Phase voltage) 3P3W : 0-440V AC (Line voltage) 3P4W : 0-254V AC (Phase voltage)	1P2W : 0-220V AC (Line voltage) 1P3W : 0-110V AC (Phase voltage) 3P3W : 0-220V AC (Line voltage)
	Allowable measurement voltage		Up to 120% of rated input voltage
	Allowable measurement voltage		1P2W : 0-528V AC (Line voltage) 1P3W : 0-264V AC (Phase voltage) 3P3W : 0-528V AC (Line voltage) 3P4W : 0-300V AC (Phase voltage)	1P2W : 0-264V AC (Line voltage) 1P3W : 0-132V AC (Phase voltage) 3P3W : 0-264V AC (Line voltage)
	VT ratio		1.00 to 99.99 (Set with setting mode) Voltage transformer (VT) is required when you measure a load with voltage over the allowable measurement voltage. Secondary current rating of commercial VT is 110V.
Input current	Primary side rating		<Using the dedicated CT> ・5A/50A/100A/250A/400A/600A (Select with setting mode) <Using a commercial CT with the secondary side current 5A> ・1 to 4000A (Set with setting mode) *Use a CT with secondary side current of 5A when measure 600A or more.
Special functions	Cut-off current		1.0 to 50.0%F.S (Set with setting mode)
	Cut-off voltage		Below 5% of rating voltage (Rating voltage x 0.05 x VT ratio) (Fixed)
	Current threshold for hour meter		1.0 to 100.0％F.S.
Accuracy (without error in CT and VT)	Indication accuracy	Instantaneous electric power, Integrated electric power, Conversion electricity charge value, Conversion carbon dioxide value	Within ± (2.0 % F.S. + 1 digit) (at +20 ℃ +68 ℉, rated input, rated frequency, power factor 1) (Note)
		Current	Within ± (1.0 % F.S. + 1 digit) (at +20 ℃ +68 ℉ rated input, rated frequency, power factor 1) (Note)
		Voltage	Within ± (1.0 % F.S. + 1 digit) (at +20 ℃ +68 ℉ rated input, rated frequency, power factor 1)
		Hour meter	Within ± (0.01 % +1 digit) (at +20 ℃ +68 ℉) (In case power on start or current energizing: ± 0.01 % + 1 sec + 1 digit)
	Temperature characteristics		Within ± (1.0 % F.S. / +10 ℃ +50 ℉ + 1 digit) (Range of -10 to +50 ℃ +14 to +122 ℉, rated input, power factor 1) In case of 5 A CT mode, within ± (1.5 % F.S. + 1 digit) under the same condition
	Frequency characteristics		Within ± (1.0 % F.S. + 1 digit) (Frequency change ± 5 % based on rated frequency, rated input, power factor 1) In case of 5 A CT mode, within ± (1.5 % F.S. + 1 digit) under the same condition

Note: Accuracy coverage: 5 to 100 % of rated current
In case of 5 A CT mode, within ± (2.5 % F.S. + 1 digit) under the same condition

Pulse input specifications [for AKW1111(B)]

Item		Specifications
Input mode		Addition (Fixed)
Max. counting speed		2 kHz / 30 Hz (Select with setting mode)
Pulse input (Min. input signal width)		0.25 ms (When 2 kHz selected) / 16.7 ms (When 30 Hz selected), ON : OFF ratio = 1 : 1
Input signal (at +20 ℃ +68 ℉)		Contact / No contact (open collector) - Impedance when shorted: Max. 1 kΩ - Residual voltage when shorted: Max. 2 V - Impedance when open: Min. 100 kΩ
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)

Specifications of the pulse output (transistor output) of integrated electric active power

Item	Specifications
Item	AKW1111(B)	AKW1110(B)
Number of output point	1 point
Insulation method	Optical coupler
Output type	Open collector
Output capacity	100mA 30V DC
Pulse width	approx. 100ms
ON state voltage drop	1.5V or less
OFF state leakage current	100μA or less
Pulse output unit	0.001/0.01/0.1/1/10/100kWh/ Alarm(AL-P)/ Current alarm(AL-C)/ Stand-by alarm (AL-S) / Counter output (Cnt) (Selectable with setting mode)	0.001/0.01/0.1/1/10/100kWh/ Alarm(AL-P)/ Current alarm(AL-C) (Selectable with setting mode)

* We recommend the setting of minimum unit for pulse output for measurement shown as below.
Output pulse: 4 pulse or less per 1sec.
-How to calculate-
(Unit for pulse output: PL-P) > (Max. measurement power [kW])/(3600[s]×4 [pulse/s])

Note :1) Improper unit setting may cause miss counting.
Note :2) If the OFF time is too short, there is a possibility of counting errors.

Communication specifications

Item	Specifications
Item	RS485 communication
Protocol	MEWTOCOL and Modbus RTU (selectable with setting mode)
Isolation status	Isolated with the internal circuit
Number of connected units	Max. 99 units (Note 1) (Note 2)
Transmission distance / Transmission speed	1,200 m 3,937 ft (Note 3) / 2,400 / 4,800 / 9,600 / 19,200 / 38,400 bps (selectable with setting mode)
Transmission format	Data length: 8-bit / 7-bit (selectable with setting mode) (Note 4), Parity: Not available / Odd number / Even number (selectable with setting mode), Stop bit: 1 bit (fixed)
Communication method / Synchronous system	Half-duplex / Synchronous communication method
Ending resistance	120 Ω approx. (built-in)

Notes:

1)	For RS-485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co., Ltd.).
2)	When using SI-35,SI-35USB or our PLC (which can be connected up to 99 units), up to 99 Eco-POWER METER can be connected. (However, 32 units max. using connection with C-NET adapter) In case using this system with the other devices, up to 31 Eco-POWER METER 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, transmission speed may be different according to using devices or transmission line.
4)	With Modbus RTU protocol for RS-485 communication, it works only with data length 8-bit.

* Modbus Protocol is a communications protocol developed for PLCs by Modicon Inc.

DEDICATED CURRENT TRANSFORMER (CT)

Specifications

Item	Clamp-on typ
Item	AKW4801B AKW4801C	AKW4802B AKW4802C	AKW4803B AKW4803C	AKW4804B AKW4804C	AKW4808B AKW4808C
CE marking directive compliance	Low Voltage Directive, RoHS Directive
Primary side rated current	5A/50A	100A	250A	400A	600A
Secondary side rated current	1.67mA/16.7mA	33.3mA	125mA	200mA	200mA
Winding (Turn)	3000	3000	2000	2000	3000
Ratio error	±2.0%F.S.
Through hole	ø10 ø0.39	ø16 ø0.63	ø24 ø0.94	ø36 ø1.42	ø36 ø1.42
Breakdown voltage (initial)	1000V AC/1min (Between through hole and output lead wire)		2000V AC/1min (Between through hole and output lead wire)
Insulation resistance (initial)	Min. 100 M Ω (at 500 V DC) (Between through hole and output lead wire)
Functional vibration resistance	10 to 55 Hz (1 cycle / min), single amplitude: 0.15 mm 0.01 in (10 min on 3 axes)
Vibration resistance	10 to 55 Hz (1 cycle / min), single amplitude: 0.375 mm 0.01 in (1 hour on 3 axes)
Functional shock resistance	Min. 98m/s²(4 times on 3 axes)
Shock resistance	Min. 294m/s²(5 times on 3 axes)
Output protection level	±7.5 V with clamp element		±3.0V with clamp element
Permissible clamping frequency	100 times approx.
Ambient temperature range	-10 to +50℃ +14 to +122 ℉ (without frost and non-condensing)
Storage temperature	-20 to +60℃ -4 to +140 ℉ (without frost and non-condensing)
Ambient humidity	35 to 85%RH（at +20℃ +68 ℉ non-condensing）
Dimensions (mm in) (W x H x D)	23 x 40 x 26.5 0.08 x 0.13 x 0.09	30 x46.5 x 32 0.10 x 0.15 x 0.11	45 x65 x 34 0.15 x 0.21 x 0.11	57 x81 x 38 0.19 x 0.27 x 0.12	62.6 x93.3 x 40 0.21 x 0.31 x 0.13
Weight (Relay cable included)	60 g approx.	90 g approx.	200 g approx.	295 g approx.	450 g approx.

Item	Through type
Item	AKW4506B AKW4506C	AKW4507B AKW4507C	AKW4508B AKW4508C
CE marking directive compliance	Low Voltage Directive, RoHS Directive
Primary side rated current	50A/100A	250A/400A	600A
Secondary side rated current	16.7mA/33.3mA	125mA/200mA	200mA
Winding (Turn)	3000	2000	3000
Ratio error	±1.0%F.S.
Through hole	ø17mm ø0.67 in	ø36mm ø1.42 in
Breakdown voltage (initial)	1000V AC/1min (Between through hole and output lead wire)）	2000V AC/1min (Between through hole and output lead wire)
Insulation resistance (initial)	Min. 100 MΩ (at 500 V DC megger) (Between through hole and output lead wire)
Functional vibration resistance	10 to 55 Hz (1 cycle / min), single amplitude: 0.15 mm 0.01 in (10 min on 3 axes)
Vibration resistance	10 to 55 Hz (1 cycle / min), single amplitude: 0.375 mm 0.01 in (1 hour on 3 axes)
Functional shock resistance	Min. 98 m/s² (4 times on 3 axes)
Shock resistance	Min. 294 m/s² (5 times on 3 axes)
Output protection level	±7.5 V with clamp element	±3.0 V with clamp element
Permissible clamping frequency	-
Ambient temperature range	–10 to +50 ℃ +14 to +122 ℉ (without frost and non-condensing)
Storage temperature	–20 to +60 ℃ –4 to +140 ℉ (without frost and non-condensing)
Ambient humidity	35 to 80 % RH (at +20 ℃ +68 ℉non-condensing)
Dimensions (mm in) (W x H x D)	ø42 x 15 1.65 x 0.05	ø70 x19 2.76 x 0.06	ø70 x19 2.76 x 0.06
Weight (Relay cable included)	70 g approx.	200 g approx.	215 g approx.

Notes :

1)	Dedicated CT are dedicated for low voltage under 440 V AC system. They can not be used for high voltage circuit.
2)	In each type of Eco-POWER METER excluding AKW8115, KW9M and KW2M, a combination of commercially secondary side 5 A CTs and dedicated CTs for 5 A is used for measuring high voltage circuits; For details, confirm with each respective user's manual.
3)	Since dedicated CTs cannot be used when measuring with AKW8115, KW9M and KW2M, please be careful and do not purchase a dedicated CT by mistake.
4)	For the AKW8115, KW9M and KW2M, CT with a secondary side current 1 A or 5 A is recommended. Please confirm the specification beforehand.
5)	Dedicated CT are not included with Eco-POWER METERs.
6)	Each dedicated CT includes a 1 m 3.281 ft relay cable, respectively.