KM1 Series

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Description

KM1 Series

Multi-circuit Smart Power Monitor for back panel application

The KM1 platform enables the visualization of power consumption for back panel applications utilizing a master-slave concept. Up to four slave units can be connected to a master unit for simultaneous measurement of electric and non-electric parameters.

  • Installation time consistently reduced.
  • Mounting space reduced up to 24% compared to traditional monitoring products.
  • Reduced number of devices: one platform can measure up to 36 circuits.
  • Wiring reduced due to high speed innerbus communication and the power supply voltage from the master.
  • Customizable platform for any applications
  • Integrated Energy classification due to customizable internal thresholds
  • High precision measurements even for currents below 5% of the nominal value.
  • No VT required / Up to 7 pulse inputs accepted to collect also non electrical information
  • Equipped with temperature input
  • Free configuration tool KM//KE1 settings
  • Dual system monitoring with one unit

Brochure
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Specifications & ordering info

Smart power monitors

Unit type

Unit category

Power supply voltage

Communications

Order code

Dual power system measurement unit

Measurement master

100 to 240 VAC

RS-485

KM1-PMU2A-FLK

Power measurement unit

KM1-PMU1A-FLK

Pulse/temperature input unit

Function slave

KM1-EMU8A-FLK

CT extension unit

CT extension slave

Power supplied from the measurement master unit

KE1-CTD8E

DeviceNet communications unit

Communications slave

100 to 240 VAC

RS-485 or DeviceNet

KE1-DRT-FLK

Options (Order separately)

Separate or In-panel current transformer (CT)

Rated primary current

Rated secondary current

Installation

Order code

5 A

Special output

Installed separately

KM20-CTF-5A

50 A

KM20-CTF-50A

100 A

KM20-CTF-100A

200 A

KM20-CTF-200A

400 A

KM20-CTF-400A

600 A

KM20-CTF-600A

5 A/50 A

In-panel (penetration type)

KM20-CTB-5A/50A

Note: CT cables are not included with the CTs.

Current transformer (CT) cable

Specification

Order code

3-m cable

KM20-CTF-CB3

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)

Communications interface converter

Dimensions (mm)

Communications conversion

Power supply voltage

Order code

30 × 80 × 78 (W×H×D)

RS-232C, USB <-> Half-duplex RS-485

100 to 240 VAC

K3SC-10 AC100-240

24 VAC/DC

K3SC-10 AC/DC24

Specifications

Ratings

Item

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 three wire 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)

Ambient operating temperature

−10 to 55°C (with no condensation or icing)

Storage temperature

−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.

Performance

Item

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)

Accuracy

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 single-phase, 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

±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)

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

CompoWay/F: 7 bits, 8 bits; Modbus: 8 bits

Stop bits

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 communication specification manuals

USB

USB 1.1 compatible

Special CTs
Current Transformer (CT) Cable

Configuration

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

Inner diameter (mm)

10

16

24

37

10

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)

KM-series Power monitor models

Series name

KM1 Series

Model

KM1-PMU_A-FLK

KE1-CTD8E

KM1-EMU8A-FLK

Dimensions (mm)

45 × 96 × 90 (W×H×D)

(maximum width of 45 × 5 when five Units are linked together)

Applicable phase wiring method

Single-phase, two wire

OK

OK

Single-phase, three wire

OK

OK

Three-phase, three wire

OK

OK

Three-phase, four wire

PMU1A only

OK

400-V direct measurement

OK

Power Monitor power supply

100 to 240 VAC

Provided from the Master Unit

100 to 240 VAC

Measured items

Total power consumption

OK

OK

Active power

OK

OK

Instantaneous reactive power

OK

OK

Current

OK

OK

Voltage

OK

Power factor

OK

OK

Frequency

OK

Pulse count

OK (Can be changed with event input.)

Temperature

OK

KE1-DRT-FLK DeviceNet communications unit

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.

Downloads

Brochures


Connection guide (ZIP)


Manuals