MODEL: 54U

54U SPECIFICATIONS

ES-6487 Rev.10 Page 2/10

http://www.m-system.co.jp/

RELATED PRODUCTS

• Infrared Communication Adaptor (model: COP-IRU)

• PC configurator software (model: PMCFG)

Downloadable at M-System’s web site.

GENERAL SPECIFICATIONS

Construction: 110-mm square panel flush mounted

Degree of protection

Front panel: IP 50

Terminal block, housing: IP 30

Connection

Voltage input: M4 screw terminals (torque 1.4 N·m)

Current input: M4 screw terminals (torque 1.4 N·m)

Discrete input, discrete output, analog output, Modbus,

auxiliary power supply: M3 screw terminals (torque 0.6 N·m)

Configuration

Code 1: Single phase/2-wire and 3-wire, 3-phase/3- wire

balanced/unbalanced load

Code 2: Single phase/2-wire and 3-wire, 3-phase/3- wire

balanced/unbalanced load, 3-phase/4- wire

balanced/unbalanced load

Screw terminal

• M3 screw: Nickel-plated steel (standard) or stainless steel

• M4 screw: Nickel-plated brass (standard) or stainless steel

Housing material: Flame-resistant resin (black)

Isolation: Voltage input to current input to discrete input to

Modbus or analog output to discrete output to power

Note: Isolated between each analog output for ‘External

interface’ codes 7, 8, 9 and A

■ Measured variables

Voltage: 1 – 2, 2 – 3, 3 – 1, 1 – N, 2 – N, 3 – N

Current: 1, 2, 3, N

Active / reactive / apparent power: 1, 2, 3, Σ

Power factor: 1, 2, 3, Σ

Frequency

Phase angle between voltages: 1 – 2, 2 – 3, 3 – 1

Active energy incoming / outgoing: Σ

Reactive energy inductive / capacitive: Σ

Apparent energy: Σ

Active / reactive / apparent power intervals (demand)

Current intervals (demand): 1, 2, 3, N

Harmonic contents: Σ, 2nd to 31st

Voltage: 1 – 2, 2 – 3, 3 – 1, 1 – N, 2 – N, 3 – N

Current: 1, 2, 3, N

Max. and min. values: 1 = R, 2 = S, 3 = T

Infrared communication: Transmission distance max. 1

meter (for use with the COP-IRU and PMCFG)

■ DISPLAY: LCD with LED backlight (LED OFF timer

available)

Signed: 4 digits, 2 lines

Energy: 9 digits, 1 line

Bargraph: 1 point (60 segments)

INPUT SPECIFICATIONS

Frequency: 50 / 60 Hz (45 – 65 Hz)

• Voltage Input

Rated voltage

Line-to-line (delta voltage): 480 V

Line-neutral (phase voltage): 277 V

Overload capacity: 200 % of rating for 10 sec., 120 %

continuous

Selectable primary voltage range: 50 – 400 000 V

• Current Input

Rated current: 1 A or 5 A

Overload capacity: 4000 % of rating for 1 sec., 2000 % for

4 sec., 120 % continuous

Selectable primary current range: 1 – 20 000 A

Operational range

Voltage, current, apparent power: ≤ 120 % of the rating

Active / reactive power: -120 to +120 % of the rating

Frequency: 45 – 65 Hz

Power factor: -1 to +1

■ Discrete Input: 24 V DC or 110 V DC

(input resistance 6 kΩ)

Detecting voltage: External 24 V DC ±10 % or 110 V DC

±10 %

ON current: ≥ 1 mA (≤ 24 kΩ @ 24 V, ≤ 110 kΩ @110 V)

OFF current: ≤ 0.1 mA (≥ 240 kΩ @ 24 V, ≥ 1.1 MΩ @ 110

V)

Detecting time: 10 – 1000 msec.

The status can be monitored on the Modbus; usable to reset

energy count or to update average (demand) value.

OUTPUT SPECIFICATIONS

■ Modbus

Communication: Half-duplex, asynchronous, no procedure

Interface: Conforms to TIA/EIA-485-A

Max. transmission distance: 500 meters

Baud rate: 1.2 – 38.4 kbps

Max. number of nodes: 31 (except the master)

Protocol: Modbus RTU

Node address: 1 – 247 (factory default setting: 1)

Parity: none, even or odd (factory default setting: odd)

Stop bit: 1 or 2 (factory default setting: 1)

Media: Shielded twisted-pair cable (CPEV-S 0.9 dia.)

■ DC Current: 4 – 20 mA DC

Load resistance: ≤ 270 Ω

Measurands converted into analog output: Voltage, Current,

Active / reactive / apparent power, Power factor, Frequency,

Harmonic contents

■ DC Voltage: 1 – 5 V DC

Load resistance: ≥ 5000 Ω

Measurands converted into analog output: Voltage, Current,