MODEL: 53U
Power Transducer Series[2] CONTACT INPUT

MULTI POWER MONITOR(4 digital displays)
Functions & Features• Measures simultaneously several variables of a heavycurrent power system: current, voltage, active, reactive andapparent power, active and reactive energy, power factor,frequency, etc.
• All measured values, counter values, display mode,setting data are stored in the non-volatile memory at thepower off• Conversion factors, system configuration, interval times
are programmable using the front buttons• Open collector output for alarm or energy countTypical Applications• Multi-functional power monitor incorporated in an electric
device: saves space, wiring works, and cost

0: None( ‘External Interface’ codes 1, 4 and 5 Not selectable.)
1: 24 V DC(‘External Interface’ codes 2, 3, 6, 7, 8 and 9 Not selectable.)
2: 110 V DC(‘External Interface’ codes 2, 3, 6, 7, 8 and 9 Not selectable.)[3] EXTERNAL INTERFACE
1: Modbus, Do × 1, Di × 1
2: 4 – 20 mA DC × 4
3: 1 – 5 V DC × 4
4: 4 – 20 mA DC × 2, Do × 1, Di × 1
5: 1 – 5 V DC × 2, Do × 1, Di × 1
6: 4 – 20 mA DC × 2, Do × 2
7: 1 – 5 V DC × 2, Do × 2
8: Modbus, Do × 3
9: Do × 4

[4] AUXILIARY POWER SUPPLY

96 (3.78)

AD4: universal (Option /UL not selectable.)
100 – 240 V AC (Operational range 85 – 264 V, 47 – 66 Hz) /110 – 240 V DC (Operational range 99 – 264 V,ripple 10 %p-p max)
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)

AXIN

96(3.78)

115(4.53)[5] OPTIONS (multiple selections)

mm (inch)

MODEL: 53U-1[1][2][3]-[4][5]ORDERING INFORMATION• Code number: 53U-1[1][2][3]-[4][5]Specify a code from below for each of [1] through [5].
(e.g. 53U-1211-M2/H/UL/Q)• Specify the specification for option code /Q(e.g. /C01/SET)CONFIGURATION
1: Single-phase / 2-wire and 3-wire,
3-phase / 3-wire and 4-wire[1] INPUT
1: 480 V / 1 A AC
2: 480 V / 5 A AC

Performanceblank: Standard/H: High accuracy (voltage/current: ±0.2 %, energy: ±0.5 %)Standards & Approvals
blank: CE marking/UL: UL approval, CE marking
Other Options
blank: none
/Q: Option other than the above (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)Moving parts and indicators are not coated.
/C01: Silicone coating (UL not available)/C02: Polyurethane coating (UL not available)/C03: Rubber coating (UL not available)
EX-FACTORY SETTING/SET: Preset according to the Ordering Information Sheet(No. ESU-6485)

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jpES-6485 Rev.27 Page 1/9

MODEL: 53U
RELATED PRODUCTS• PC configurator software (model: PMCFG)• PC Recorder Light software for the 53U (model:MSR128LUx) Software downloadable at our web.
Software downloadable at our web site.
A dedicated cable is required to connect the module to thePC. Please refer to the internet software download site or
the users manual for the PC configurator for applicable
cable types.

GENERAL SPECIFICATIONS
Construction: 96-mm square (1/4 DIN size) panel flush
mountedDegree of protection
Front panel: IP 50
Terminal block, housing: IP 30ConnectionVoltage input: Connector type terminal block(applicable wire size ≤ 2.5 dia, 0.5 – 3.5 mm2, stripped
length 7 - 8 mm)
Current input: Screw terminal block(applicable wire size ≤ 2.4 dia, 0.5 – 3.5 mm2, stripped
length 13 - 15 mm)
Contact input, contact output, analog output, Modbus,auxiliary power supply: Connector type terminal block(applicable wire size ≤ 2.4 dia, 0.5 – 2.5 mm2, stripped
length 7 - 8 mm)
Configuration: Single phase/2-wire and 3-wire, 3-phase/3wire balanced/unbalanced load, 3-phase/4-wirebalanced/unbalanced load
Housing material: Flame-resistant resin (gray)
Isolation: Voltage input to current input to contact input toModbus or configurator jack or analog output to contact
output (between each contact output except for ExternalInterface code 8) to power■ 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
Active / reactive / apparent power: 1, 2, 3, ΣPower factor: 1, 2, 3, ΣFrequency
Phase angle between voltages: 1 - 2, 2 - 3, 3 - 1
Active energy incoming / outgoing: ΣReactive energy inductive / capacitive: ΣApparent energy: ΣActive / reactive / apparent power intervals (demand)
Other demands
Harmonic contents: 2nd to 31stMax. and min. values(LED OFF timer available)
Signed: 4 digits, 3 lines
Energy: 9 digits, 1 line
Bargraph: 3 points

INPUT SPECIFICATIONSFrequency: 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-wireand 3-wire)
Consumption VA: ≤ ULN2 / 300 kΩ / phase
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
Consumption VA: ≤ I2 · 0.01 Ω / phase
Overload capacity: 4000 % of rating for 1 sec., 2000% for 4sec., 120% continuous
Selectable primary current range: 1 – 20 000 A
Operational range
Voltage, current, apparent power: ≤ 120 % of the rating
Active/reactive power: ≤ ±120 % of the rating
Frequency: 45 – 65 Hz
Power factor: ≤ ±1
■ Contact 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 @ 110V)
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■ DISPLAY: LCD with LED backlight
53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-6485 Rev.27 Page 2/9

MODEL: 53U
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,Active / reactive / apparent power, Power factor, Frequency,
Harmonic contents■ Open Collector
Programmable for either alarm or energy count.
Max. rated load: 130 V DC @50 mA
Continuous rated load: 130 V DC @30 mA
Saturation voltage: 1.5 V DCMeasurands applicable to alarm: Voltage, current, current
intervals, neutral current, frequency, energy, energy
intervals(ON delay, deadband and other parameters are selectable)
Measurands applicable to count: Energy;
Pulse rate selectable within
0.1 – 10 000.0 kWh/p, kvarh/p, kVAh/p*2. Accuracy level:
Active energy class 0.5S according to IEC 62053-22(Reactive energy class 2 according to IEC 62053-23)
Sampling rate: 64 samples per cycle
Data update period:
Harmonic contents and frequency: ≤ 1.1 sec.
Other: ≤ 600 msec.
Response time: ≤ 2 sec. (0 – 99 %),≤ 3 sec. for frequency and harmonic contents
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength:
4000 V AC @1 minute(voltage input or current input or contact input or contact
output or Modbus or configurator jack or analog output topower)
2500 V AC @1 minute(voltage input to current input to contact input to contact
output to Modbus or configurator jack or analog output)
2000 V AC @1 minute(between each contact output except for External Interfacecode 8)
2000 V AC @1 minute (circuits to housing)

INSTALLATIONPower consumption•AC: < 8 VA
•DC: < 4 W
Operating temperature: -10 to +55°C (14 to 131°F)
Storage temperature: -20 to +80°C (-4 to +176°F)
Operating humidity: 90 % RH max. (non-condensing)
Mounting: Panel flush mounting
Weight: 300 g (0.66 lb)

PERFORMANCE
Accuracy (at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)
Voltage: ±0.3 % (±0.2 % for Option /H)*1
Current: ±0.3 % (±0.2 % for Option /H)*1
Power: ±0.5 %*1
Power factor: ±0.5 %Frequency: ±0.1 %*1
Energy: ±1 % (±0.5 % for Option /H*2)
Harmonic contents: ±1 %*1
Analog output: Accuracy of assigned measurand or ±0.2 %,whichever is greater.
*1. Percentage of the spans:
480 V for voltage;
1 A or 5 A for current; and4155 W (5 A) or 831 W (1 A) for active power
The described accuracy levels are ensured at the input 1 %or more for phase 2 current with 3-phase/3-wire unbalanced
load, for neutral current with 3-phase/4-wire unbalanced
load, and neutral current with 1-phase/3-wire.

STANDARDS & APPROVALS
EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1
Measurement Category III (input)
Installation Category II (power)
Pollution Degree 2
Input to auxiliary power: Reinforced insulation (550 V)
Output to auxiliary power: Reinforced insulation (300 V)
Input to output: Basic insulation (550 V)
RoHS Directive
Approval:
UL/C-UL general safety requirements(UL 61010-1, CAN/CSA-C22.2 No.61010-1)

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jpES-6485 Rev.27 Page 3/9

MODEL: 53U
MOUNTING REQUIREMENTS■ PANEL CUTOUT unit: mm (inch)+0.8 (3.65)
0 (3.63)92+0.8 (3.65)
0 (3.63)

92

Panel thickness : 2 to 15 mm (0.08 to 0.59 inch)

EXTERNAL VIEW
■ FRONT VIEW

■ REAR VIEW

Data Displays

Voltage Input
Terminals
Current Input
Terminals
Auxiliary Power
Supply Terminals

Control Buttons

∑IU

PQS

PF THDMAXE PRG

ENTER ESCAPE

Ext. Interface
Terminals

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

Configurator
JackES-6485 Rev.27 Page 4/9

MODEL: 53U
TERMINAL CONNECTIONSFor UL approved model, L and N are marked, instead of U(+) and V(-).
Input

V1 V2 V3 N 1S 1L 2S 2L 3S 3L

System /Application

Terminal
V1 V2 V3 1S 1L 3S 3L

U(+)

V
(–)

CONFIG+ – + – T1 T2T3 T4

Configurator Jack

DO/PO DI

Three phase /3-wire,unbalanced loadsourceL1
L2
L3loadSystem /Application
V1 N

Single phase /2-wire

1S 1L

V1 Nsource
L1NloadV1 NusourceL1NklKLvv

uVVUload

Three phase /4-wire,balanced load

1S 1LklKLloadloadvv

uVV

UklK

L

ll
L kl

K

L

load

K

L

load

1S 1L

V1 Nload

V1 Nsource
L1L2L3N

sourceL1L2L3kl

KLsourceL1L2L3N

1S 1L

klK

L

load

1S 1Lv

U

V

kl

K

L

load

V1V2V3N 1S 1L 2S 2L 3S 3L

load

sourceL1
L2L3N

V1 V2 V3 1S 1L

ukK

V1 V2 V3 1S 1L

source
L1
L2
L3Ul
L ksource
L1L2L3NuV

kK

V1 Nv

Usource
L1L2L3load

load
V1V1 N V2 1S 1L 2S 2L

Single phase /3-wire

1S 1L

sourceL1N

V1 V2 V3 1S 1L

Three phase /3-wire,balanced loadsource U
L1L2L3Terminal

sourceL1L2L3V1 V2 V3 1S 1L 3S 3L

u

Auxiliary Power External Interface
SupplyV1 V2 V3 1S 1L 3S 3L

source
L1N
L2Three phase /4-wire,
unbalanced load

V1 N V2 1S 1L 2S 2L

load

source
L1
N
L2kl

KL kl

KL

V2V3N 1S 1L 2S 2L 3S 3L

sourceL1L2L3Nkl

KLkKloadlkl

K

LL

load

V1V2V3u v

u v

u v

U VU VU VN

1S 1L 2S 2L 3S 3L

V1 N V2 1S 1L 2S 2L

usource U
L1NL2v
Vv
VuUkl

K

L kl

K

L

load

source
L1
L2
L3Nkl

K

Lkl

K

Lload
kl

K

L

Note: For low voltage circuit, grounding is not required.

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-6485 Rev.27 Page 5/9

MODEL: 53U■ EXTERNAL INTERFACE CODE: 2, 3

■ EXTERNAL INTERFACE CODE: 1AO1 +DI +CONTACTINPUT

DI –

AO1 –
AO2 +

DO/PO+CONTACTOUTPUT

DO/PO–T1
T2

AO2 –Shielded Twisted-pair Cable
To other
Modbus devices+–T3Term.
Resist.

ANALOGOUTPUT 1

AO3 +AO3 –Jumper *1

T4

ANALOGOUTPUT 2

ANALOGOUTPUT 3

AO4 +3U(+) *AO4 –AUXILIARY POWERANALOGOUTPUT 43U(+) *V(–)

AUXILIARY POWER
JACKV(–)

CONFIGURATOR

JACK■ EXTERNAL INTERFACE CODE: 4, 5

CONFIGURATOR *2■ EXTERNAL INTERFACE CODE: 6, 7
AO1 +DI +CONTACTINPUT

DI –AO1 –DO/PO+ANALOG
OUTPUT 1

AO2 +CONTACTOUTPUT

DO/PO–AO2 –

AO1 +ANALOG
OUTPUT 2

DO/PO1+ANALOGOUTPUT 1

AO1 –DO/PO1–

AO2 +CONTACTOUTPUT 1

DO/PO2+ANALOG
OUTPUT 2

AO2 –DO/PO2–3U(+) *CONTACTOUTPUT 23U(+) *AUXILIARY POWERAUXILIARY POWER

V(–)

V(–)

JACK

JACK

CONFIGURATOR *2■ EXTERNAL INTERFACE CODE: 8

CONFIGURATOR *2■ EXTERNAL INTERFACE CODE: 9

DO/PO1+DO/PO1+CONTACT OUTPUT 1
DO/PO1–DO/PO2+CONTACTOUTPUT 1

CONTACT OUTPUT 2
DO/PO2+

DO/PO3+
CONTACT OUTPUT 3

DO/PO2–

DO/PO COM
T1
T2+–T3
Term.
Resist.

Shielded Twisted-pair Cable
To otherModbus devices

DO/PO3+
DO/PO3–Jumper *1

T4

CONTACTOUTPUT 2

CONTACTOUTPUT 3

DO/PO4+3
U(+) *DO/PO4–
AUXILIARY POWER

CONTACTOUTPUT 43
U(+) *V(–)

AUXILIARY POWER
JACKV(–)

CONFIGURATOR

JACK• Contact Input Connection E.g.

• Contact Output Connection E.g.

DI ++DO/PO++

DI –-DO/PO–-*1. When the device is located at the end of a transmission line viatwisted-pair cable, (when there is no cross-wiring), close across theterminal T2 – T3 with a leadwire.
When the device is not at the end, no shortcircuit wire is required.
*2. Analog output may momentarily fluctuate while the configurator cableis left connected.
*3. For UL approved model, L and N are marked, instead of U(+) and V(–).

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

CONFIGURATOR

ES-6485 Rev.27 Page 6/9

MODEL: 53U
MODBUS WIRING CONNECTION

RS-232-C

CONNECTOR

R2K-1

RS-485

T1
T2
T3
T4

RS-485

53U53UT1T2T3T4*1T1T2T3T4*12FG *
*1. Internal terminating resistor is used when the device is at the end of a transmission line.
*2. Install shield cables to all sections and ground them at single point.

3 (.12)EXTERNAL DIMENSIONS unit: mm [inch]
96 (3.78)

23 (.91)

80 (3.15)[12 (.47)]

92 (3.62)

100(4)

3 (.12)96 (3.78).

2 (.08)GASKET

MOUNTING BRACKET53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jpdia

92 (3.62)

3.9ES-6485 Rev.27 Page 7/9

MODEL: 53U
SYSTEM CONFIGURATION EXAMPLES■ RS-485 / RS-232-C

RS-232-C
RS-232-C/RS-485Converter(model: R2K-1 or LK1)

Lightning Surge Protector
for RS-485/422(model: MD74R or MDP-4R) *1

RS-485 (Modbus RTU)

Lightning Surge Protector
for RS-485/422(model: MD74R or MDP-4R) *1

AXIN

AXIN

AXIN

Multi Power Monitor(model: 53U)

■ RS-485 / ETHERNET

EthernetCommunication Adaptor(model: 72EM-M4 or 72EM2-M4)

ETHERNET
RUN
SEND
FIELD

RS-485CNFG

Lightning Surge Protector
for RS-485/422(model: MD74R or MDP-4R) *1

RS-485 (Modbus RTU)

Lightning Surge Protectorfor RS-485/422(model: MD74R or MDP-4R) *1AXIN

AXIN

AXIN

Multi Power Monitor(model: 53U)
*1. Insert lightning surge protectors recommended in this example if necessary.

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-6485 Rev.27 Page 8/9

MODEL: 53USpecifications are subject to change without notice.

53U SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-6485 Rev.27 Page 9/9