MODEL: 53U
(LED OFF timer available)
Signed: 4 digits, 3 lines
Energy: 9 digits, 1 line
Bargraph: 3 points
RELATED PRODUCTS
• PC configurator software (model: PMCFG)
• PC Recorder Light software for the 53U (model:
MSR128LUx) Software downloadable at M-System’s web.
Software downloadable at M-System’s web site.
A dedicated cable is required to connect the module to the
PC. Please refer to the internet software download site or
the users manual for the PC configurator for applicable
cable types.
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 (single-phase / 2-wire
and 3-wire)
GENERAL SPECIFICATIONS
Construction: 96-mm square (1/4 DIN size) panel flush
mounted
Consumption VA: ≤ ULN2 / 300 kΩ / phase
Overload capacity: 200 % of rating for 10 sec., 120%
continuous
Degree of protection
Front panel: IP 50
Selectable primary voltage range: 50 – 400 000 V
• Current Input
Terminal block, housing: IP 30
Connection
Rated current: 1 A or 5 A
Voltage input: Connector type terminal block
Consumption VA: ≤ I · 0.01 Ω / phase
2
(applicable wire size ≤ 2.5 dia, 0.5 – 3.5 mm
2
,stripped
,stripped
Overload capacity: 4000 % of rating for 1 sec., 2000% for 4
sec., 120% continuous
length 7 - 8 mm)
Current input: Screw terminal block
(applicable wire size ≤ 2.4 dia, 0.5 – 3.5 mm
length 13 - 15 mm)
Selectable primary current range: 1 – 20 000 A
Operational range
2
Voltage, current, apparent power: ≤ 120 % of the rating
Active/reactive power: ≤ ±120 % of the rating
Frequency: 45 – 65 Hz
Contact input, contact output, analog output, Modbus,
auxiliary power supply: Connector type terminal block
(applicable wire size ≤ 2.4 dia, 0.5 – 2.5 mm
2,stripped
Power factor: ≤ ±1
length 7 - 8 mm)
■ Contact Input: 24 V DC or 110 V DC
(input resistance 6 kΩ)
Configuration: Single phase/2-wire and 3-wire, 3-phase/3-
wire balanced/unbalanced load, 3-phase/4-wire
balanced/unbalanced load
Detecting voltage: External 24 V DC ±10 % or 110 V DC
±10 %
Housing material: Flame-resistant resin (gray)
Isolation: Voltage input to current input to contact input to
Modbus or configurator jack or analog output to contact
output (between each contact output except for External
Interface code 8) to power
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.
■ Measured variables
Voltage: 1 – N, 2 – N, 3 – N, 1 – 2, 2 – 3, 3 – 1
Current: 1, 2, 3, N
Average current: 1, 2, 3
OUTPUT SPECIFICATIONS
■ Modbus
Active / reactive / apparent power: 1, 2, 3, Σ
Power factor: 1, 2, 3, Σ
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
Frequency
Phase angle between voltages: 1 - 2, 2 - 3, 3 - 1
Active energy incoming / outgoing: Σ
Reactive energy inductive / capacitive: Σ
Apparent energy: Σ
Max. number of nodes: 31 (except the master)
Protocol: Modbus RTU
Active / reactive / apparent power intervals (demand)
Other demands
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
Harmonic contents: 2nd to 31st
Max. and min. values
■ DISPLAY: LCD with LED backlight
53U SPECIFICATIONS
ES-6485 Rev.26 Page 2/9
https://www.m-system.co.jp/
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