OMRON KM1Energy Conservation Support / Environment Measure Equipment/ Electric Power Monitoring Equipment/Smart Power Monitor

OMRON KM1 Energy Conservation Support / Environment Measure Equipment

KM1 Multi-circuit Smart Power Monitor/Dimensions
KM1 Multi-circuit Smart Power Monitor/Catalog
KM1 Multi-circuit Smart Power Monitor/Lineup
KM1 Multi-circuit Smart Power Monitor/Specifications
Purchase the OMRON KM1 Smart Power Monitor

OMRON KM1 Dimensions

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last update: September 12, 2013

Greater Visualization Enables More Energy Savings

The key to saving energy lies in knowing the breakdown of electric power.

As we enter times of even greater power shortages, overall monitoring of electric power alone starts to lose its effectiveness. The key to finding hidden wastes of electric power is to enhance the visibility of power consumption at the distribution panel breaker level. The KM1 can help you determine when, where, and how much electric power is being used to help reduce unnecessary power consumption.

The KM1 platform solves the work and cost issues to visualize power consumption across all distribution panels.

Previous Problems

Previously, measuring electric power for multiple circuits or systems required costly and difficult-to-install power sensors.

Measuring multiple circuits requires difficult installation and results in high costs.

With the KM1...

The KM1 solves both the time and cost issues even for multiple circuits and systems.

The KM1 provides a simple and smart solution to the issues encountered with traditional power sensors.

Simple and Smart: The KM1 Platform

Dual System Monitoring

Industry-first Dual System Monitoring

A single KM1 can perform measurements for mixed distribution panels with circuits for both air-conditioners and lighting equipment.

Measure up to 36 circuits.

Add CT Expansion Units for More Measurements

One Measurement Master Unit accepts up to 4 CT inputs, and a CT Expansion Unit accepts up to 8 CT inputs. (Up to four CT Expansion Units can be added.) This enables the measurement of up to 36 single-phase two-wire circuits.

Space-efficient Design and Reduced Wiring

Mounting Space Reduced to 1/4 That of Previous Models

With the KM1, all you need is five Power Monitors.
You can reduce the mounting space by 76%.

Linked design eliminates the need for voltage and communications wiring.

The elimination of communications and power line crossovers results in less time and work required for wiring.

Direct Measurement of 480 V without a VT

No VT equipment is required, even for 480 V measurements.

High-precision Measurements

High-precision Micropower Measurements

The KM1 performs high-precision measurement even below 5% of the rated current.
Even standby energy can be measured dependably.

Primary-side Inverter Support

The KM1 can provide accurate measurements without any current waveform distortion even after an inverter is installed. Measurement accuracy: ±2% FS This enables measuring the effectiveness of energy conservation measures after installation.

Additional Measurements to Aid in Energy Conservation

Visualization to Help Maintenance

With the wide range of output capabilities on the KM1, you can see exactly when you should perform maintenance.
● Overcurrent, Undercurrent, Overvoltage, and Undervoltage Alarm Output

Visualization of Specific Power Consumption through Pulse/Temperature Input Units

Use pulse inputs to measure production information at the same time, including flow rates, throughput, temperature inputs, and more. When this information is combined with other electric power data, you can easily visualize the specific power consumption.

* Input is performed with the KM1-EMU8A-FLK.

Visualization of Power Generation Effectiveness

The effectiveness of power generation can be visualized by measuring the power consumption and regenerative power together at the same time.

Energy Classification

The total power consumption and total time can be divided up between the three states of stopped, standby, and operating based on the power consumption value and pulse input. Classifying energy helps to clearly identify areas where improvement is possible.

* This function is supported only by the KM1-PMU[]A-FLK.

last update: September 12, 2013

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If you have just landed here, this product OMRON KM1 Energy Conservation Support / Environment Measure Equipment,Energy Conservation Support / Environment Measure Equipment is offered online by Tianin FLD Technical Co.,Ltd. This is an online store providing Energy Conservation Support / Environment Measure Equipment at wholesale prices for consumers. You can call us or send enquiry, we would give you the prices, packing,deliverty and more detailed information on the KM1 We cooperate with DHL,TNT,FEDEX,UPS,EMS,etc.They guarantee to meet your needs in terms of time and money,even if you need your OMRON KM1Energy Conservation Support / Environment Measure Equipment tomorrow morning (aka overnight or next day air) on your desk, 2, 3 days or more.Note to international customers, YES, we ship worldwide.

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OMRON KM1 dimension
KM1 Multi-circuit Smart Power Monitor/Dimensions
last update: November 06, 2013
Smart Power Monitors
KM1-PMU1A-FLK/PMU2A-FLK/EMU8A-FLK/KE1-CTD8E

KE1-DRT-FLK

Separate Current Transformers (CTs)
KM20-CTF-5A

KM20-CTF-50A

KM20-CTF-100A

KM20-CTF-200A

KM20-CTF-400A/600A

In-panel CT, penetration type
KM20-CTB-5A/50A

CT Cable
KM20-CTF-CB3 (Special CT cable)

last update: November 06, 2013

OMRON KM1 catalog
KM1 Multi-circuit Smart Power Monitor/Catalog

Catalog

Manual

CAD

English
Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name Catalog Number
[size] Last Update

KM1 Catalog N170-E1-01
[4557KB] Sep 24, 201520150924 KM1 Catalog

OMRON KM1 lineup
KM1 Multi-circuit Smart Power Monitor/Lineup
last update: September 12, 2013
Smart Power Monitors

Model Unit type Unit category Power supply voltage Communications
KM1-PMU2A-FLK Dual Power System
Measurement Unit Measurement
master 100 to 240 VAC RS-485
KM1-PMU1A-FLK Power Measurement Unit
KM1-EMU8A-FLK Pulse/Temperature Input
Unit Function slave
KE1-CTD8E CT Extension Unit CT extension
slave Power supplied from the
Measurement Master Unit -
KE1-DRT-FLK DeviceNet
Communications Unit Communications
slave 100 to 240 VAC RS-485 or
DeviceNet

Options (Order Separately)
Separate or In-panel Current Transformer (CT)

Model Rated primary current Rated secondary current Installation
KM20-CTF-5A 5 A Special output Installed separately
KM20-CTF-50A 50 A
KM20-CTF-100A 100 A
KM20-CTF-200A 200 A
KM20-CTF-400A 400 A
KM20-CTF-600A 600 A
KM20-CTB-5A/50A 5 A/50 A In-panel (penetration type)

Note: CT Cables are not included with the CTs.

Current Transformer (CT) Cable

Model Specification
KM20-CTF-CB3 3-m cable

Note: Use the CT Cable specified by OMRON or one manufactured by JST Mfg. Co.
You can also use a 1.25-B3A crimping terminal or AWG22 power cable.

Related Devices (Sold Separately)
When Connected to a Computer
Communications Interface Converter

Model Rated primary current Rated secondary current Installation
K3SC-10 AC100-240 30 × 80 × 78 (W×H×D) RS-232C, USB <-> Half-duplex RS-485 100 to 240 VAC
K3SC-10 AC/DC24 24 VAC/DC

last update: September 12, 2013

OMRON KM1 specification
KM1 Multi-circuit Smart Power Monitor/Specifications
last update: October 01, 2015
Ratings

Model Master Unit Slave Unit
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
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
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 -
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

*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.

last update: October 01, 2015

NO. KM1

TYPE:Electric Power Monitoring Equipment Smart Power Monitor Copyright Statement

DATE:2021-06-12

Associated products:
KM-N2-FLK Power Monitor/Features KM50-E Smart Power Monitor/Features

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.
Catalog Name	Catalog Number [size]	Last Update
KM1 Catalog	N170-E1-01 [4557KB]	Sep 24, 201520150924	KM1 Catalog

Model	Unit type	Unit category	Power supply voltage	Communications
KM1-PMU2A-FLK	Dual Power System Measurement Unit	Measurement master	100 to 240 VAC	RS-485
KM1-PMU1A-FLK	Power Measurement Unit
KM1-EMU8A-FLK	Pulse/Temperature Input Unit	Function slave
KE1-CTD8E	CT Extension Unit	CT extension slave	Power supplied from the Measurement Master Unit	-
KE1-DRT-FLK	DeviceNet Communications Unit	Communications slave	100 to 240 VAC	RS-485 or DeviceNet

Model	Rated primary current	Rated secondary current	Installation
KM20-CTF-5A	5 A	Special output	Installed separately
KM20-CTF-50A	50 A
KM20-CTF-100A	100 A
KM20-CTF-200A	200 A
KM20-CTF-400A	400 A
KM20-CTF-600A	600 A
KM20-CTB-5A/50A	5 A/50 A	In-panel (penetration type)

Model	Specification
KM20-CTF-CB3	3-m cable

Model	Rated primary current	Rated secondary current	Installation
K3SC-10 AC100-240	30 × 80 × 78 (W×H×D)	RS-232C, USB <-> Half-duplex RS-485	100 to 240 VAC
K3SC-10 AC/DC24	24 VAC/DC

Model	Master Unit	Slave Unit
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

Model	Master Unit	Slave Unit
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
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	-
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

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)

Model	KM20-CTF-CB3
Cable length	3 m

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.

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OMRON KM1Energy Conservation Support / Environment Measure Equipment/ Electric Power Monitoring Equipment/Smart Power Monitor

OMRON KM1 Dimensions

Greater Visualization Enables More Energy Savings

The key to saving energy lies in knowing the breakdown of electric power.

The KM1 platform solves the work and cost issues to visualize power consumption across all distribution panels.

Previous Problems

With the KM1...

Simple and Smart: The KM1 Platform

Dual System Monitoring

Industry-first Dual System Monitoring

Measure up to 36 circuits.

Add CT Expansion Units for More Measurements

Space-efficient Design and Reduced Wiring

Mounting Space Reduced to 1/4 That of Previous Models

Linked design eliminates the need for voltage and communications wiring.

Direct Measurement of 480 V without a VT

High-precision Measurements

High-precision Micropower Measurements

Primary-side Inverter Support

Additional Measurements to Aid in Energy Conservation

Visualization to Help Maintenance

Visualization of Specific Power Consumption through Pulse/Temperature Input Units

Visualization of Power Generation Effectiveness

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Smart Power Monitors

KM1-PMU1A-FLK/PMU2A-FLK/EMU8A-FLK/KE1-CTD8E

KE1-DRT-FLK

Separate Current Transformers (CTs)

KM20-CTF-5A

KM20-CTF-50A

KM20-CTF-100A

KM20-CTF-200A

KM20-CTF-400A/600A

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KM20-CTB-5A/50A

CT Cable

KM20-CTF-CB3 (Special CT cable)

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

When Connected to a Computer
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Special CTs
Current Transformer (CT) Cable

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