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Multi-circuit Smart
Power Monitor
KM1
New Ways to Uncover Power Savings
Measure Multiple Distribution
Panels at the Same Time
Visualize, Monitor, and Analyze
Your Energy Usage
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.
Visualization of
Power
Consumption at the
Floor and
Distribution Panel
Levels
Office buildings, large
commercial facilities
(building and energy
management systems), etc.
Visualization of Air
Conditioning,
Lighting, and Other
Equipment
Visualization
Office floors
(factory energy
management
system), etc.
by Device
Factory production
lines (factory energy
management
systems), etc.
2
KW
KW
KW
Calculation of specific
power consumption for
each device
Measurement of
electric power at
the breaker level
OMRON’s KM1 platform enables the visualization of power consumption for all distribution
panels as a cohesive group.
Measure two
systems with a
single Power
Monitor
Measurements that
give you a little more.
Save space and reduce wiring work
Measure up to 36 circuits.
Simple installation
Add Units as Needed for Any Application
Multi-circuit Smart
Power Monitor
KM1
3
The KM1 platform solves the work and cost issues to visualize
Previous Problems
Previously, measuring electric power for multiple circuits or systems required
costly and difficult-to-install power sensors.
For mixed distribution panels that
contain both power and lighting
circuits, a separate power sensor
was required for each circuit.
Inside power distribution facility
Electrical
room
Distribution panel
Power
Multiple sensors were
required because each
circuit required its own
sensor.
Distribution panel
Distribution panel
Lighting
Power
Lighting
Voltage and communications
wiring is required for each
individual power sensor.
Measuring multiple circuits requires difficult installation and results in high costs.
Simple and Smart: The KM1 Platform
Dual System Monitoring
Measure up to 36 circuits.
Industry-first Dual System
Monitoring
Add CT Expansion Units for
More Measurements
A single KM1 can perform measurements for
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.
mixed distribution panels with circuits for both
air-conditioners and lighting equipment.
Electrical
room
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%.
Previous product
80
mm
KM1
96
mm
225 mm 5 Units
Measurement
Master Unit
CT Expansion Unit
Single-phase, two-wire
Measurement
Master Unit
Single-phase,
two-wire
4
High-speed inner-bus communications
CT Connection
Unit
Direct Measurement of 480 V
without a VT
KE1-CTD8E
8
8
Slaves
Power supply voltage from the Master
KM1-PMU2A
8
8
Total =
36 circuits
No VT equipment is required, even for
480 V measurements.
KM1
VT
4
1/4
Approx
The elimination of communications and
power line crossovers results in less time
and work required for wiring.
Master
Lighting equipment
202.5 cm2
36 Units 864
Linked design eliminates the
need for voltage and
communications wiring.
Power/Lighting
Mixed Distribution
Panel
Air-conditioners
1080 mm
cm2
Multi-circuit Smart Power Monitor KM1
power consumption across all distribution panels.
With the KM1...
The KM1 solves both the time and cost issues even for multiple
circuits and systems.
Inside power distribution facility
Electrical
room
A single KM1 can perform
measurements even for
mixed distribution panels.
Power
Lighting
Power
Distribution
panel
Distribution
panel
Distribution
panel
The KM1 accepts up to
7 pulse inputs. The KM1
can also collect
production information.
Lighting
The KM1 Power Monitors are
linked so voltage and communication wiring is not required.
Pulses
Machine 1
A single KM1 can perform
measurements for up to 36
circuits in a distribution panel.
Machine 2 Machine 3
Machine 4
Machine 5 Machine 6
The KM1 provides a simple and smart solution to the issues encountered with traditional power sensors.
High-precision Measurements
Additional Measurements to Aid in Energy Conservation
High-precision Micropower
Measurements
Visualization to Help Maintenance
The KM1 performs high-precision measurement
even below 5% of the rated current.
Even standby energy can be measured dependably.
● Overcurrent, Undercurrent, Overvoltage,
and Undervoltage Alarm Output
1A
Measurement current (A)
Automatic range switching.
With the wide range of output capabilities on the
KM1, you can see exactly when you should
perform maintenance.
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.
KM1PMUA-FLK
KM1
KM1EMU8A-FLK
Flow rate pulse
75 mA
Actual current (A)
Automatically range switching
for small electrical currents.
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.
An alarm is output based on
threshold values to determine
overcurrents, undercurrents,
overvoltages, and undervoltages Device
for the device.
Overcurrent
Gas or liquid
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.
Consumption
Inverter
Motor
Inverter
Generation
Regenerative
power
Regenerative
power
• Compressors
• Air-conditioning fans
• Pumps
• Freezers
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.
Regeneration
Stopped KM1
Standby
Operating
Power
supply
Power
supply
KM1
Visualization of Specific Power
Consumption through
Pulse/Temperature Input Units
Motor
Displays the stopped, standby,
or operating status of the device
Device
KM1
Stopped
* This function is supported only by the KM1-PMUA-FLK.
5
Connect up to 4 Slave Units to a Master Unit for
a maximum of 36 measurement points per set.
● A single Measurement Master Unit can measure two systems.
● Measure up to 36 circuits with CT Expansion Units.
● Simultaneous measurement of production information with extra measurements via a
Pulse/Temperature Input Unit.
Measurement Master Unit (One)
Slave Units (4 Max.)
Communications Unit (One)
Dual System Measurement Unit* CT Expansion Unit
Pulse/Temperature Input Unit DeviceNet Communications Unit
KM1-PMU2A-FLK
KM1-EMU8A-FLK
KE1-CTD8E
KE1-DRT-FLK
Voltage
CT
Pulses
CT
DeviceNet
Thermistor
Power
supply
Contact output
(transistor)
Power Measurement Master Unit
Measurement of Multiple Circuits
Across Two Different Systems
Features: Dual system measurement of
rated input voltage (a combination of two of
the following types: single-phase, two-wire;
single-phase, three-wire; or three-phase,
three-wire)
Maximum number of CT connections:
4 (two different types of selectable CTs)
Output: Three transistor outputs
(measurement value alarm output,
three-state output, or total power
consumption pulse output)
Measurement/logging functions:
Voltage, current, active power,
reactive power, total power consumption,
power factor, and frequency
Other functions: Three-state energy
classification, total power consumption
conversion (CO2/currency), simple
measurement, 480 V input without a VT
* Use the KM1-PMU1A-FLK Single-system
Measurement Unit for three-phase, four-wire
configurations.
6
Contact output
(relay)
Power
supply
Contact output
(transistor)
Power
supply
8 CT Connections per Unit
Maximum of 32 CT Connections
with 4 Units
Power Measurements and More
Measure Throughput and
Temperatures
Efficiently Transfer Large
Amounts of Data
DeviceNet Communications Unit
Features: Connect up to 4 Units to the
Master Unit (Cannot be used as a
standalone device.)
No rated input voltage; phase wiring method
is the same as the Master Unit.
Features: Connect up to 4 Units to the
Master Unit (Cannot be used as a
standalone devices.)
Features: Manage multiple KM1 Power
Monitors from a single host (PLC or PC).
Connect up to five KM1 Power Monitors to a
single DeviceNet Communications Unit.
Maximum number of CT connections:
8 (two different types of selectable CTs)
Output: One relay contact output (for alarm
output)
Measurement functions: Current, active
power, reactive power, total power
consumption, and power factor
Event inputs: Seven pulse inputs (You can
use event inputs to switch between pulse
input counts (e.g., throughput), pulse
conversion (e.g., flow rates), calculation of
power consumption per pulse, pulse input
ON time (e.g., operating time), and
three-state energy function.)
Temperature input: One (thermistor input,
abnormal temperature detection)
Measurement/logging functions: Pulse
count, pulse input ON time, and temperature
Communications functions: Remote I/O
communications, explicit message
communications, configuration and
monitoring of KM1 Power Monitors, and
automatic detection of baud rates
Multi-circuit Smart Power Monitor KM1
Unit Configurations and the Number of Measurable Circuits
The maximum numbers of circuits that can be measured with the KM1-PMU2A-FLK
Measurement Master Unit are as follows:
Single System
Voltage Input from One System to a Measurement Master Unit
● Maximum Circuit Configuration
Unit Configuration
KM1-PMU2A-FLK
Measurement Master Unit (Four CTs)
● Connection Example
Distribution Panel for Lighting (Single-phase, Two-wire)
Measurement of Six Lights
+ KE1-CTD8E
CT Expansion Unit (8 CTs)
Single-phase, two-wire
CTD8E
Total
PMU2A
Single-phase,
two-wire
4
8
8
8
8
= 36 circuits
Single-phase,
three-wire
2
4
4
4
4
= 18 circuits
Three-phase,
three-wire
2
4
4
4
4
= 18 circuits
Measurement
Master Unit
CT Extension Unit
Not: Use the KM1-PMU1A-FLK (three CTs) Single-system
Master Unit for three-phase, four-wire configurations.
Three-phase,
four-wire
1
2
Dual System
2
2
2
= 9 circuits
Voltage Inputs from Two Systems to a Measurement Master Unit
● Maximum Circuit Configuration
Unit Configuration
KM1-PMU2A-FLK
Measurement Master Unit (Four CTs)
+ KE1-CTD8E
CT Expansion Unit (8 CTs)
● Connection Example
Mixed Distribution Panel for Lighting and Operation
(Three-phase, Three-wire or Single-phase, Two-wire)
Measurement of Three Operational Power Supplies
and Three Lighting Power Supplies
Three-phase, three-wire
Single-phase, two-wire
CTD8E
Total
PMU2A
Single-phase,
two-wire
Three-phase,
three-wire
Single-phase,
three-wire
Three-phase,
three-wire
2
4
4
4
4
= 18 circuits
1
2
2
2
2
= 9 circuits
1
2
2
2
2
= 9 circuits
1
2
2
2
2
= 9 circuits
Measurement
Master Unit
CT Extension Unit
7
Free Software Provides Support for Everything from Setup
to the Collection and Analysis of Measurement Data
Setup
Perform Evaluation and Verification
Connect the KM1 to a PC with a USB cable to
easily set up the KM1.
Data can be collected directly on a computer for
evaluation and verification.
Free Configuration Tool (KM1/KE1-Setting)
Free Data Collection Software: Easy KM-Manager V3
Release date: October 2012
● USB-powered, so there is no need to supply additional power to the KM1.
● Simple setting of the parameters that are required for setup.
● Displays and trend analysis of instantaneous values
● Graphs of Integral power consumption and other data
Parameter settings
Commercially
available USB cable
Commercially
available USB cable
RS-485
K3SC
USB/RS-485
Interface Converter
KM1
Runs on USB power
KM1
KM1
KM1
Application Examples
Highly configurable for any scale, from data collection directly from a computer
to batch data collection with the EW700.
Convenience Stores and
Commercial Facilities
Convenience Stores,
Tenant Shops, etc.
Indirect data
collection on
a computer
Lighting equipment
Computer
Offices and Office Floors
EasyEW-Viewer
+
EasyEW-Logger
(Power supply is ON
only when necessary.)
Small Office
Buildings and
Office Floors
Lighting equipment
Direct data
collection on
a computer
Computer
(Power supply
is always ON.)
USB or LAN
Data collection device:
EW700
LAN
KM1
Data
K3SC
collection
SD
Memory
Card
KM1
RS-485
(Power supply
is always ON.)
Automatic
collection
RS-485
EasyKM-Manager V3
Can be expanded according
to the number of circuits
required for measurement
Air-conditioners
Air-conditioners
USB or LAN <- RS-485 connection
8
LAN or SD Memory Card <- EW700 <- RS-485 connection
Multi-circuit Smart Power Monitor KM1
Data Collection and Display Analysis
Perform advanced automatic data collection through
a data collection device.
Free Automatic Data Collection Software (Easy EW-Logger)
Free Graph Display Software (Easy EW-Viewer)
Release date:
July 2012
● Displays and trend analysis of instantaneous values
● Graphs of total power consumption and other data
EasyEW-Viewer
Constant collection or one-time collection
Energy-saving Analysis
Support Software
EasyEW-Logger
EW700
LAN cable
Sensor Network Controller
Release date: October 2012
Hub
Freely manipulate and analyze collected data to help
you find out exactly where energy is being wasted.
Automatic collection and internal saving of all
KM1 measurement value and automatic CSV
file saving to SD card storage
Simple
operation using
only a mouse
RS-485
KM1
KM1
KM1
This software must be purchased separately.
Refer to the product catalog for details. (Cat. No.: N169)
Large-scale Systems
Manufacturing
Facilities
Factories and Production Lines
Indirect data
collection on
a computer
Buildings,
Offices, etc.
EasyEW-Viewer
+
EasyEW-Logger
Manufacturing
Facilities
Collect data
directly on a PLC
and perform
processing
HMI or other
host system
Lighting equipment
Computer
(Power supply is ON
only when necessary.)
Data collection device:
EW700
KM1
RS-485
Data collection device:
PLC
DeviceNet Master
(Power supply
is always ON.)
Lighting equipment
Automatic
collection
(Power supply
LAN or
other network is always ON.)
Air-conditioners
KM1
LAN
Lighting equipment
DeviceNet
DeviceNet
Communications Unit
Remote I/O communications
(sends measurement values
to the PLC without special
programming)
Data collection device:
EW700
DeviceNet
KM1
RS-485
DeviceNet
Communications Unit
Can be expanded according
to the number of circuits
required for measurement
Power
(Power supply
is always ON.)
Can be expanded according
to the number of circuits
required for measurement
Automatic
collection
Air-conditioners
LAN <- PLC <- DeviceNet connection
LAN <- EW700 <- RS-485
9
KM-series Power Monitor Models
Series name
Types
Model
Item
KM1 Series
KM50 Series
KM20 Series
Low-cost, reduced wiring, space-saving, versatile multi-circuit measurement
Intelligent on-panel type
Stationary or embedded type
KM1-PMUoA-FLK
Product name
KE1-CTD8E
KM1-EMU8A-FLK
Multi-circuit Smart Power Monitor
KM50-C1-FLK
KM50-E1-FLK
KM20-B40-FLK
KM20-B40
48 × 48 Smart Power
Monitor
48 × 96 Smart Power
Monitor
Compact power sensor with
RS-485 communications
Compact power sensor
with pulse output
External appearance
Master Unit for Single
or Dual System
Measurement
• Inherits the features of the
KM50-E.
• Maximum number of
• Input of two systems with
measured circuits per
different voltages (PMU2A)
• Maximum number of measured Unit
Single-phase, two-wire:
circuits
8 circuits
Single-phase, two-wire: 4
circuits (PMU2A)
Single-phase, threeSingle-phase, three-wire/
wire: 4 circuits
Three-phase, three-wire: 2
Three-phase, threecircuits (PMU2A))
wire: 4 circuits
Three-phase, four-wire: 1 circuit
Three-phase, four-wire:
(PMU1A)
2 circuits
• Up to four Slave Units can be
added
Features
Installation
Dimensions (mm)
• Primary-side inverter
measurement supported.
• Three-state energy
classification
• Pulse input ON time
• Simple and easy to use
• Affordable
measurement
• Specific power
• Easy initial setup with switches only
consumption
management
• 400-V direct
measurement
Front panel or DIN Track mounting bracket (sold separately)
None
Eleven-segment LEDs Eleven-segment LEDs
None
DIN Track
None
45 × 96 × 90 (W×H×D)
(maximum width of 45 × 5 when five Units are linked together)
DIN 48 × 48
DIN 48 × 96
Depth: 91
Depth: 88
(Including terminal cover) (Including terminal cover)
W30×H80×D78
W30×H80×D78
OK
OK
-
OK
OK
OK
OK
Single-phase, three-wire
OK
OK
-
OK
OK
OK
OK
OK
OK
-
OK
OK
OK
OK
PMU1A only
OK
-
-
OK
-
-
OK
-
-
(A VT is required.)
OK
(A VT is required.)
(A VT is required.)
100 to 240 VAC
Provided from the
Master Unit
100 to 240 VAC
Same as measured circuits
100 to 240 VAC (common)
100 to 240 VAC
Total power consumption
OK
OK
-
OK
OK
OK
OK
Active power
OK
OK
-
OK
OK
OK
-
Reactive power
OK
OK
-
OK
OK
-
-
Current
OK
OK
-
OK
OK
OK (R and T phases)
-
Voltage
OK
-
-
OK
OK
OK (R and T phases)
-
Power factor
OK
OK
-
OK
OK
OK
-
OK
-
-
OK
OK
OK
-
OK (Can be changed with
event input.)
OK (Can be changed with
event input.)
-
-
400-V direct measurement
Power Monitor power supply
Measured
items
Frequency
Same as measured circuits
100 to 240 VAC (common)
Pulse count
-
-
OK (Can be changed with
event input.)
Pulse Input ON Time
-
-
OK (Can be changed with
event input.)
OK (Can be changed with
event input.)
OK (Can be changed with
event input.)
-
-
OK (Can be changed with
event input.)
-
-
Specific power
consumption
OK (Can be changed with
event input.)
-
-
OK (Can be changed with
event input.)
-
-
OK
OK
OK
-
-
Three-state energy
classification
OK
-
-
-
OK
-
-
Simple power measurement (measures
only the value of the input current)
OK
OK
-
OK
OK
-
-
Micropower Measurements Mode
(automatic range switching)
OK
OK
-
OK
OK
-
-
Display of CO2 emission
-
-
-
OK
OK
-
-
Temperature
Display of regenerative power
-
-
-
OK
OK
-
-
Total power consumption pulse output
OK
-
-
OK
OK
-
OK
Alarm output for measured items
OK
OK
Temperature alarms only
OK
OK
-
-
Three-state (operating
power, standby power,
stopped power) status output
OK
-
-
-
OK
-
-
-
-
-
-
-
-
-
ComoWay/F RS-485
E x t e r n a l Communications (connections
interface
for up to 31 nodes)
OK
-
OK
OK
OK
OK
-
Modbus RS-485 Communications
(connections for up to 99 nodes)
OK
-
OK
OK
OK
-
-
Logging to Power Monitor internal memory
OK
-
OK
OK
OK
-
-
Logging to external memory
-
-
-
-
-
-
-
-
-
LAN port
Data
logging
Applicable standards
10
• Seven event inputs
• One temperature
input
• Primary-side Inverter
measurement supported.
• Pulse input ON time
measurement
• Specific power
consumption
management
Single-phase, two-wire
A p p l i c a bl e
phase wiring Three-phase, three-wire
method
Three-phase, four-wire
Outputs
Pulse/Temperature
Input Slave Unit
DIN Track
Numeric display
Functions
Slave Unit for
CT Expansion
CE, S, KC, and TÜV mark
UL, CE, S, and KC mark
Multi-circuit Smart Power Monitor KM1
Ordering Information
Smart Power Monitors
Model
Unit type
Unit category
Power supply voltage
Communications
100 to 240 VAC
RS-485
KM1-PMU2A-FLK
Dual Power System Measurement Unit
KM1-PMU1A-FLK
Power Measurement Unit
KM1-EMU8A-FLK
Pulse/Temperature Input Unit
Function slave
CT Extension Unit
CT extension slave
Power supplied from the
Measurement Master Unit
-
DeviceNet Communications Unit
Communications slave
100 to 240 VAC
RS-485 or DeviceNet
KE1-CTD8E
KE1-DRT-FLK
Measurement master
Options (Order Separately)
Separate or In-panel Current Transformer (CT)
Model
Rated primary current
KM20-CTF-5A
Rated secondary current
Installation
5A
KM20-CTF-50A
50 A
KM20-CTF-100A
100 A
KM20-CTF-200A
200 A
KM20-CTF-400A
400 A
KM20-CTF-600A
Special output
Installed separately
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
KM20-CTF-CB3
Specification
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
K3SC-10 AC100-240
K3SC-10 AC/DC24
Dimensions (mm)
Communications conversion
30 × 80 × 78 (W×H×D)
RS-232C, USB <-> Half-duplex RS-485
Power supply voltage
100 to 240 VAC
24 VAC/DC
11
Ratings
Master Unit
Item
Model
Applicable phase wiring method
KM1-PMU1A-FLK
(Single Power System)
KM1-EMU8A-FLK
(Pulses/Temperatures)
KE1-CTD8E
(CT Extension Unit)
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
4
3
-
8
2 types
1 type
-
Two types per Slave Unit
Maximum number of CT connections
Selectable types of CT capacities
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.
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 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
Rated input current (CT)
(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 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)
-
Input
Clock
Slave Unit
KM1-PMU2A-FLK
(Dual Power Systems)
-
-
(5, 50, 100, 200, 400, or 600 A)
-
-
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
Master Unit
Item
Accuracy*1
12
Model
KM1-PMU2A-FLK
(Dual Power Systems)
Slave Unit
KM1-PMU1A-FLK
(Single Power System)
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.
Power (active power Active power and reactive power
and reactive power)
±2.0% FS, ±1 digit (Power factor = 1)
KM1-EMU8A-FLK
(Pulses/Temperatures)
KE1-CTD8E (CT Extension Unit)
±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.
-
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 influence
±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)
Influence 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)
Influence 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)
Multi-circuit Smart Power Monitor KM1
Performance
Master Unit
Item
Model
KM1-PMU2A-FLK
(Dual Power Systems)
Slave Unit
KM1-PMU1A-FLK
(Single Power System)
KM1-EMU8A-FLK
(Pulses/Temperatures)
KE1-CTD8E (CT Extension Unit)
-
0.1% to 19.9% of rated input in
0.1% increments
Low-cut current set value
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
100 ms
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
Between the power supply terminals and RS-485/USB/transistor outputs
KM1-PMU2A-FLK: 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
-
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 kW
-
Number of inputs
Event inputs
Temperature
inputs
Minimum input time
-
5ms
-
Thermistor inputs
-
1
-
Relay output
Capable of supporting 7 event inputs and 1 temperature input when
linked with the KM1-EMU8A-FLK.
-
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
-
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.
-
Automatic recovery only
Recovery method
RS-485
E52-THE5A
Color code (blue): −50 to 50° C
Color code (black): 0 to 100° C
-
Applicable thermistor
Combinations
Transistor
outputs
100 ms for measurement voltage at 50 Hz and
83.3 ms for measurement voltage at 60 Hz
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 specifications 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
Apparent power = (Active power)2 + (Reactive power)2
*3. The set value may change when the protocol is changed to Modbus. Check the set values if you change the DIP switch settings.
13
Performance
Special CTs
Current Transformer (CT) Cable
Configuration
Item
Installed separately
Model
KM20-CTF-5A
KM20-CTF-50A
KM20-CTF-100A
In-panel (penetration type)
KM20-CTF-200A
KM20-CTF-400A
KM20-CTF-600A
KM20-CTB-5A/50A
Rated primary current
5A
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
6,000 turns
9,000 turns
3,000 turns
Secondary winding
3,000 turns
Applicable frequency
10 Hz to 5 kHz
Insulation resistance
Between output terminals and case: 50 MW 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
−20 to 60° C, 85% max. (with no condensation)
and humidity ranges
Storage temperature
−30 to 65° C, 85% max. (with no condensation)
and humidity ranges
Note: Operate the Special CTs at a low voltage of 600 V or less.
* If you use a flat cable, select the cable based on the dimensions of the CT.
Current Transformer (CT) Cable
Model
KM20-CTF-CB3
Cable length
3m
Note: Either use the CT Cable specified 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
Communications
distance
5 dedicated lines (2 signal lines, 2 power lines, and 1 shield)
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.
14
Multi-circuit Smart Power Monitor KM1
Dimensions
(Unit: mm)
Smart Power Monitors
KM1-PMU1A-FLK/PMU2A-FLK/EMU8A-FLK/KE1-CTD8E
KE1-DRT-FLK
Two, 4.3 dia.
Two, 4.3 dia.
45
45
19.2
19.2
102
96 110
102
96 110
90
90
Separate Current Transformers (CTs)
KM20-CTF-5A
KM20-CTF-50A
CT Hole Dimensions
10 R5
33
39 7.9 7.4
5.57
25.3
KM20-CTF-100A
CT Hole Dimensions
10
R5
CT Hole Dimensions
R8
16
11
22.9
28.9 9.5 8.5
R8
29.4
37.4 14.5
R7.5
7.5
3
25.5
3
R9
14.2
3
30.5
41.3
48
53.7
40
40.5
46
In-panel CT, penetration type
KM20-CTF-200A
KM20-CTF-400A/600A
CT Hole Dimensions
R10
24
KM20-CTB-5A/50A
CT Hole Dimensions
37
44.9
55.9 24
35.5
62.5
73.5
R8
27.6
R18.5
R13
38.6
49
35.5
6
35.5
6
75.7
92.5
8.4
52.8
9.05
52.5
12.95
54
CT Cable
KM20-CTF-CB3 (Special CT cable)
3000±100
V1.25- B3A
Power
Monitor
end
CT end
VCTF 0.3×2
V1.25-N3A
30±5
50±5
15
OMRON Corporation
Industrial Automation Company
Tokyo, JAPAN
Authorized Distributor:
Contact: www.ia.omron.com
Regional Headquarters
OMRON EUROPE B.V.
Wegalaan 67-69-2132 JD Hoofddorp
The Netherlands
Tel: (31)2356-81-300/Fax: (31)2356-81-388
OMRON ELECTRONICS LLC
One Commerce Drive Schaumburg,
IL 60173-5302 U.S.A.
Tel: (1) 847-843-7900/Fax: (1) 847-843-7787
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel: (65) 6835-3011/Fax: (65) 6835-2711
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong New Area, Shanghai, 200120, China
Tel: (86) 21-5037-2222/Fax: (86) 21-5037-2200
© OMRON Corporation 2012 All Rights Reserved.
In the interest of product improvement,
specifications are subject to change without notice.
CSM_8_2_0815
Cat. No. N170-E1-01
0712
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