KM1

Multi-circuit Smart Power Monitor

KM1

New Ways to Uncover Power Savings. Measure Multiple Distribution Panels at the Same Time.

* Information in this page is a reference that you created on the basis of information in the product catalog before the end of production, may be different from the current situation, such as goods for / supported standards options / price / features of the product. Before using, please check the compatibility and safety system.

last update: October 1, 2015

Ratings

Model		Master Unit		Slave Unit
Model		KM1-PMU2A-FLK (Dual Power Systems)	KM1-PMU1A-FLK (Single Power System)	KM1-EMU8A-FLK (Pulses/ Temperatures)	KE1-CTD8E (CT Extension Unit)
Applicable phase wiring method		Single-phase two- wire, single-phase threewire, and three-phase three- wire	Single-phase two- wire, single-phase three-wire, three- phase three-wire, and three-phase four-wire	-	Single-phase two- wire, single-phase three-wire, three- phase three-wire, and three-phase four-wire
Maximum number of CT connections		4	3	-	8
Selectable types of CT capacities		2 types	1 type	-	Two types per Slave Unit
Power supply	Rated power supply voltage	100 to 240 VAC, 50/60 Hz			-
	Allowable supply voltage range	85% to 110% of rated power supply voltage			-
	Power supply allowable frequency range	45 to 65 Hz			-
	Power consumption	Standalone: 10 VA max., Maximum expansion: 14 VA max.		10 VA max.	-
Input	Rated input voltage	100 to 480 VAC (single-phase, 2- wire): Line voltage 100/200 VAC (single-phase, 3- wire): Phase voltage/line voltage 100 to 480 VAC (3-phase, 3-wire): Line voltage	100 to 480 VAC (single-phase, 2- wire): Line voltage 100/200 VAC (single-phase, 3-wire): Phase voltage/line voltage 100 to 480 VAC (3-phase, 3-wire): Line voltage 58 to 277 VAC (3-phase, 4-wire): Phase voltage	-
	Rated input current (CT)	(5, 50, 100, 200, 400, or 600 A)		-	(5, 50, 100, 200, 400, or 600 A)
	Rated input power	With 5-A CT: 4 kW With 50-A CT: 40 kW With 100-A CT: 80 kW With 200-A CT: 160 kW With 400-A CT: 320 kW With 600-A CT: 480 kW		-
	Rated input frequency	50/60 Hz			-
	Allowable input frequency range	45 to 65 Hz			-
	Allowable input voltage	110% of rated input voltage (continuous)		-
	Allowable input current	120% of rated input current (continuous)		-	120% of rated input current (continuous)
	Rated input load	Voltage input: 0.5 VA max. (excluding power supply) Current input: 0.5 VA max. (for each input)		-	Current input: 0.5 VA max. (for each input)
Clock	Clock setting	2012 to 2099 (Adjusted for leap years during this period.)			-
	Clock accuracy	±1.5 min./month (at 23°C)			-
	Clock backup period	Seven-day backup with an electric double-layer capacitor (after being powered for at least 24 hours and when at 23°C when the power is turned OFF)			-
Ambient operating temperature		-10 to 55°C (with no condensation or icing)
Storage humidity		-25 to 65°C (with no condensation or icing)
Ambient operating humidity		25% to 85%
Storage humidity		25% to 85%
Altitude		2,000 m max.
Installation environment		Overvoltage category II, pollution degree 2, measurement category II
Compliant standards		EN/IEC 61010-2-030 and EN/IEC 31626-1 Industrial electromagnetic environment

Performance

Model		Master Unit		Slave Unit
Model		KM1-PMU2A-FLK (Dual Power Systems)	KM1-PMU1A-FLK (Single Power System)	KM1-EMU8A-FLK (Pulses/ Temperatures)	KE1-CTD8E (CT Extension Unit)
Accu- racy *1	Voltage	±1.0% FS, ±1 digit; or, ±2.0% FS, ±1 digit for voltage across Vtr under the same conditions		-
	Current	±1.0% FS, ±1 digit However, the accuracy is ±2.0% FS, ±1 digit for the phase-S current for a three- phase, three-wire circuit and the phase- N current for a singlephase, three-wire circuit under the same conditions.		-	±1.0% FS, ±1 digit
	Current			-	However, the accuracy is ±2.0% FS, ±1 digit for the phase-S current for a three-phase, three-wire circuit and the phase-N current for a single-phase, three- wire circuit under the same conditions.
	Power (active power and reactive power)	Active power and reactive power ±2.0% FS, ±1 digit (Power factor = 1)		-	Active power and reactive power ±2.0% FS, ±1 digit (Power factor = 1)
	Frequency	±0.3 Hz ±1 digit		-
	Power factor *2	±5.0% FS at an ambient temperature of 23°C, rated input, rated frequency, and a power factor of 0.5 to 1 to 0.5		-	±5.0% FS at an ambient temperature of 23°C, rated input, rated frequency, and a power factor of 0.5 to 1 to 0.5
	Temperature	-		±5°C two hours after the power supply is turned ON (after performing any adjustments for the ambient temperature)	-
Temperature infl uence		±1.0% FS (percentage of the measurement value at an ambient temperature of 23°C, rated input, rated frequency, and a power factor of 1 in the operating temperature range)		±1.0% FS (percentage of the measurement value at an ambient temperature of 23°C in the operating temperature range)	±1.0% FS (percentage of the measurement value at an ambient temperature of 23°C, rated input, rated frequency, and a power factor of 1 in the operating temperature range)
Infl uence of frequency		±1.0% FS (percentage of the measurement value at an ambient temperature of 23°C, rated input, rated frequency, and a power factor of 1 in the rated frequency ±5 Hz range)		-	±1.0% FS (percentage of the measurement value at an ambient temperature of 23°C, rated input, rated frequency, and a power factor of 1 in the rated frequency ±5 Hz range)
Infl uence of harmonics		±0.5% FS (at ambient temperature of 23°C, error for superimposed 2nd, 3rd, 5th, 7th, 9th, 11th, and 13th harmonics for a content percentage of 30% for current and 5% for voltage of the basic wave)		-	±0.5% FS (at ambient temperature of 23°C, error for superimposed 2nd, 3rd, 5th, 7th, 9th, 11th, and 13th harmonics for a content percentage of 30% for current and 5% for voltage of the basic wave)
Low-cut current set value		0.1% to 19.9% of rated input in 0.1% increments		-	0.1% to 19.9% of rated input in 0.1% increments
Sampling cycle		100 ms for measurement voltage at 50 Hz and 83.3 ms for measurement voltage at 60 Hz		100 ms	100 ms for measurement voltage at 50 Hz and 83.3 ms for measurement voltage at 60 Hz
Insulation resistance		Insulation resistance: 20 M (at 500 VDC)
Dielectric strength		All models: Locations to which 2,000 V was applied for one minute: Between all terminals and case KM1-PMU1A-FLK: Between the power supply terminals and RS-485/USB/transistor output Between the power supply terminals and current/voltage input Between current/voltage input and RS-485/USB/transistor outputs KM1-PMU2A-FLK: Between the power supply terminals and RS-485/USB/transistor outputs Between the power supply terminals and current/voltage input Between current/voltage inputs and RS-485/USB/transistor outputs Between current/voltage input 1 and voltage input 2 KM1-EMU8A-FLK: Between power supply terminals, temperature input, and RS-485/USB/transistor outputs KE1-CTD8E: Between current inputs and USB/relay outputs
Vibration resistance		Single-amplitude: 0.35 mm, Acceleration: 50 m/s² Vibration: 10 to 55 Hz, 10 sweeps of 5 minutes each along 3 axes
Shock resistance		150 m/s², 3 times each in 6 directions (up/down, left/right, forward/backward)
Weight		230 g
Memory backup		No. of writes to non-volatile memory: 1,000,000 times
Event inputs	Number of inputs	-		7	-
	No-voltage inputs	-		ON current: 15 mA max., ON residual voltage: 8 V max., OFF leakage current: 1.5 mA max.	-
	Voltage input	-		High level: 4.75 to 30 VDC Low level: 0 to 2 VDC Input impedance: Approx. 2 kΩ	-
	Minimum input time	-		5ms	-
Tem- perature inputs	Thermisto inputs	-		1	-
Tem- perature inputs	Applicable thermistor	-		E52-THE5A Color code (blue): -50 to 50°C Color code (black): 0 to 100°C	-
Combinations		Capable of supporting 7 event inputs and 1 temperature input when linked with the KM1-EMU8A-FLK.		-
Tran- sistor outputs	Number of outputs	Three open collectors (OUT1, OUT2, OUT3) and common			-
	Output capacity	30 VDC, 30 mA			-
	ON residual voltage	1.2 V max.			-
	OFF leakage current	100 μA max.			-
	Total power consumption pulse output	Outputs one pulse when the power consumption reaches the set pulse output unit (1, 10, 100, 1k, 2k, 5k, 10k, 20k, 50k, 100k W/h).			-
	Alarm output	Outputs an alarm based on the set alarm output threshold.			-
	Recovery method	Automatic recovery only			-
Relay output	Number of outputs	-			One NO contact (OUT1)
	Rated load	-			Resistance load, 125 VAC, 3 A; 30 VDC, 3 A
	Mechanical life expectancy	-			5,000,000 times min.
	Electrical life expectancy	-			200,000 times min. (rated load switching frequency: 1,800 times/h)
	Failure rate P level	-			5 VDC, 10 mA (at a switching frequency of 120 times/min)
	Alarm output	-			Turns output ON or OFF based on the alarm set value.
	Recovery method	-			Automatic recovery only
RS-485	Protocols	Communications protocol setting: Compoway/F or Modbus
	Sync method	Start-stop
	Node number setting	CompoWay/F: 0 to 99, Modbus:1 to 99 When a switch operation is performed to set the protocol to Modbus when the node number is set to 0, the node number is automatically changed to 1.
	Baud rate	9,600 bps, 19,200 bps, or 38,400 bps
	Transmission code	CompoWay/F: ASCII, Modbus: Binary
	*Data length 3**	CompoWay/F: 7 bits, 8 bits; Modbus: 8 bits
	*Stop bits 3**	CompoWay/F: 1 bits or 2 bits; Modbus: 1 bit with priority, 2 bits without priority
	Parity	Even, odd, or none
	Maximum transmission distance	500 m
	Maximum number of nodes	CompoWay/F: 31, Modbus: 99
	Communication items	Refer to the relevant communications specifi cations manuals.
USB		USB 1.1 compatible
Memory retention for power interruptions		Parameter data Total power consumption (Saved to internal memory every 5 minutes.)
Number of link connector insertions/removals		25 times

*1. Based on JISC1111, without special CT error, at ambient temperature of 23° C, rated input, and rated frequency.
Applicable to 2nd, 3rd, 5th, 7th, 9th, 11th, and 13th harmonics.
*2. Power factor formula: Power factor = Active power/Apparent power
3123_sp_2_1
*3. The set value may change when the protocol is changed to Modbus. Check the set values if you change the DIP
switch settings.

Special CTs
Current Transformer (CT) Cable

Confi guration	Installed separately						In-panel (penetration type)
Model	KM20- CTF-5A	KM20- CTF-50A	KM20- CTF-100A	KM20- CTF-200A	KM20- CTF-400A	KM20- CTF-600A	KM20-CTB- 5A/50A
Rated primary current	5 A	50 A	100 A	200 A	400 A	600 A	5 A/50 A
Rated secondary current	1.67 mA	1.67 mA	33.3 mA	66.7 mA	66.7 mA	66.7 mA	1.67 mA/ 16.7 mA
Secondary winding	3,000 turns				6,000 turns	9,000 turns	3,000 turns
Applicable frequency	10 Hz to 5 kHz
Insulation resistance	Between output terminals and case: 50 MΩ min. (at 500 VDC)
Dielectric strength	Between output terminals and case: 2,000 VAC for 1 minute
Protective element	7.5-V clamp element
Allowable number of connections/ disconnections	100 times
Applicable wire diameter *	7.9 mm max.	9.5 mm max.	14.5 mm max.	24.0 mm max.	35.5 mm max.		8.4 mm max.
Operating temperature and humidity ranges	-20 to 60°C, 85% max. (with no condensation)
Storage temperature and humidity ranges	-30 to 65°C, 85% max. (with no condensation)

Note: Operate the Special CTs at a low voltage of 600 V or less.
* If you use a fl at cable, select the cable based on the dimensions of the CT.

Current Transformer (CT) Cable

Model	KM20-CTF-CB3
Cable length	3 m

Note: Either use the CT Cable specifi ed by OMRON or use 1.25-B3A crimp terminals and AWG22 wire from J.S.T. Mfg. Co., Ltd.

Specifications

DeviceNet Communications Unit (KE1-DRT-FLK)
DeviceNet Communications Specifications

Item	Specification
Communications	Remote I/O communications (I/O assignment settings with simple assignment settings or the Configurator) Message communications
Connection configuration	Can be a combination of multidrops and T-branching (for both main and branch lines).
Baud rate	500, 250, or 125 kbps (automatically detected)
Rated primary current	5 dedicated lines (2 signal lines, 2 power lines, and 1 shield)
Communications distance	Baud rate	Maximum network length	Branch line length	Total for all branch lines
	500 kbps	100 m max. (100 m max.)	6 m max.	39 m max.
	250 kbps	250 m max. (100 m max.)	6 m max.	78 m max.
	125 kbps	500 m max. (100 m max.)	6 m max.	156 m max.
	Numbers in parentheses are the lengths for thin cable.