51U-0B1-R1

M-System Co.,Ltd.

Panel Mounted Multi Power Meter 51-UNIT

Manufacturer: M-System Co.,Ltd.

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Panel Mounted Multi Power Meter 51-UNIT 51U Functions & Features

Measuring all major factors required for power & energy management • Transducer combined with 3 displays in one enclosure • RS-485 or DC current output • Totalized counter values stored in non-vola- tile memory • Occupying less panel space, requir- ing fewer connection• Easily replacing standard 110 mm (4 5/16 in.) square size, long scale meter • Pa- rameters are field-selectable Application Examples
Updating conventional power meter to a remote controlled power logger, only with additional trans- mitter output wiring • Installed within an indus- trial piece of electrical equipment MODEL & SUFFIX CODE SELECTION DEFAULT SETTING MULTI POWER METER DISPLAY A V x1kW x10kW R S T R-S S-T T-R 110 (4.33) 110 (4.33) 126 (4.96)mm (inch) *1 : Some display items or output types are not selectable according to the input type. See the detailed selection guide in the following pages. *2 : Page No. of the detailed selection guide *3 : V = Line voltage A = Line current kW = Kilowatt kvar = Kilovar PF = Power factor Hz = Frequency kWh = Kilowatthours kvarh = Kilovarhours DA = Demand (current) MDA = Maximum demand (current) V 0 = Zero-phase voltage MV0 = Maximum zero-phase voltage ITEM DEFAULT SETTING CT primary rating 5.00A (element S for demand, time lag 15 min.) VT primay rating 110.0V or 220.0V, same as input rating GVT tertiary rating 110.0V Frequency range 45 – 65 Hz Pulse out. scaling factor 1 kWh/pulse (kvarh/pulse) Demand alarm setpoint 100% RS-485 Address: 01 Transmission speed: 4800 bps MODEL INPUT (balanced load) *1 0 : Single-phase / 2-wire, 105V / 5A AC (P . 5/16) *2 1 : Single-phase / 3-wire, 105V / 210V / 5A AC (P . 7/16) 2 : 3-phase / 3-wire, 220V / 5A AC (P. 10/16) 3 : 3-phase / 3-wire, 110V / 5A AC (P . 10/16) 4 : 3-phase / 4-wire, 110V / √ 3 V / 5A AC (P. 13/16) DISPLAY ITEMS *3 A :A × 3 B :V × 3 C :A × 3, V × 3 D :A × 3, V × 3, kW E :A × 3, V × 3, kWh F :A × 3, kW, kWh G : Hz, PF, kvar H :V × 3, MV0, V0 J :A × 3, DA, MDA K :A × 3 or DA, MDA, alarm setpoint L : Hz, PF, kW M :P F , k W, kWh N :V × 3, kW, kWh P :A × 3 or DA or MDA, V × 3, kWh Q :A × 3, PF, kW R :A × 3, PF, kvar S :A × 3 or PF, kW, kWh T :A × 3, PF, kvarh U :V × 3, Hz W :A × 3 or DA or MDA, V × 3, alarm setpoint X :A × 3, kvar, kvarh Y : Hz, PF, kWh OUTPUT 0 :N one 1 :4 – 20mA DC, 3 points 2 :4 – 20mA DC, 2 points + pulse 3 :4 – 20mA DC, 2 points + reset input 4 : RS-485 (MsysNet use only. Consult Factory.) AUXILIARY POWER SUPPLY M : 85 – 264V AC R : 24V DC P :1 10V DC REMOTE CONTROL 1 : 85 – 132V AC or 85 – 143V DC 2 : 20 – 30V DC 3 : 170 – 264V AC P. 1 / 16 ES-6481 Rev.9

Specifications subject to change without notice. GENERAL SPECIFICATIONS Construction: 110 mm-square (4 5/16 in.) panel surface, cylindric body Connection Input & auxiliary power: M4 screw terminals Output: M3 screw terminals Housing material: plastic (black) Isolation: input to output to power; not isolated between analog outputs Scaling: primary values for CT and VT; tertiary value for GVT (Inform M-System CT and VT ratios when ordering.) CT:5 – 8000A (up to 15000A for Code K) VT:1 10 – 77kV GVT: 63.5 – 190.5V Time lag for demand: 0 sec., 30 sec. or 1, 2, 3, 5, 7, 10, 15, 30 min. (default: 15 min.) Sampling cycle: 400 µsec. (DO NOT connect a device such like inverters.) Measurable frequency ranges: 45 – 44 Hz, 55 – 65 Hz, 45 – 65 Hz Low-end cutout: Display shows 0 for the input less than the following: approx. 1% for current, watt and var; approx. 3% for voltage. INPUT ■ VOLTAGE INPUT (must be balanced with 3-phase connection) Operational range Voltage, watt, var, zero-phase voltage: 0 – 100% of rat- ing Power factor: ≥30V Frequency: ≥30V Overload capacity: 200% of rating for 60 sec., 115% for 3 hours Input burden: 0.3VA/phase ■ CURRENT INPUT (may be unbalanced with 3-phase connection) Operational range Current, watt, var, demand: 0 – 100% of rating Power factor: ≥5% of rating Overload capacity: 4000% of rating for 1 sec., 2000% for 60 sec., 115% for 3 hours Input burden: 0.1VA/phase ■ REMOTE CONTROL Display switching: same functions as the front DISPLAY button does; input time ≥0.3 sec., input current 5mA Reset input: max. zero-phase voltage and demand; input time ≥0.3 sec., input current 5mA OUTPUT ■ CURRENT OUTPUT: 4 – 20mA DC Load resistance: 500Ω maximum DISPLAY ITEMS RA TING INPUT RANGE Current 5A 0 – 5A Voltage 1ø / 2w 1 – 2 105V 0 – 150V 1ø / 3w 1 – N 105V 0 – 150V 2 – N 105V 0 – 150V 1 – 2 210V 0 – 300V 3ø / 3w line 110V 0 – 150V 220V 0 – 300V 3ø / 4w line 110V 0 – 150V phase 110 / √ 3 V 0 – 150 / √ 3 V Watt 110V / 5A 0 – 1 kW (0 – 5 kW) 110V / 5A 220V / 5A 0 – 2 kW 220V / 5A -2 – +2 kW Var1 10V / 5A 0 – lag1 kvar (0 – lag500 var) 110V / 5A lead1 – lag1 kvar (lead500 – lag 500 var) 220V / 5A 0 – lag2 kvar 220V / 5A lead2 – lag2 kvar Power factor –– lead 50 – 100 – lag 50 % Frequency –– 45.0 – 55.0 Hz 55.0 – 65.0 Hz 45.0 – 65.0 Hz Max. zero-phase voltage 63.5V 0 – 86.6V 110.0V 0 – 150.0V 190.5V 0 – 259.8V Demand 5A 0 – 5A, element S Maximum demand 5A 0 – 5A, element S Remarks: 1) Values for single-phase connection in brackets. 2) Displays are automatically scaled according to the scal- ing factor settings for VT and CT. 3) Reverse or lead flow are displayed with the negative (–) indicator. ■ PULSE OUTPUT: totalizing watt in forward flow or var in lag. Scaling factor: 0.01, 0.1, 1, 10, 100 kWh/pulse (default: 1) Contact rating: 110V DC @0.1A (resistive load) 110V AC @0.1A (resistive load) Pulse width time: 100 – 150 msec. (pulse rate ≤12000 pulses/h) ■ TRANSMISSION OUTPUT (Multi-Meter Protocol) Transmission: conform to RS-485, EIA Transmission distance: 1 kilometer max. (≤31 units) Cable: shielded twisted-pair cable (CPEV-S 0.9 dia.) Terminator: incorporated ■ DEMAND ALARM CONTACT OUTPUT Alarm setpoint: 5 – 100%; adjustable in 0.5% incre- ments Contact rating: 110V DC @0.1A (resistive load) ON resistance: ≤50Ω I/O RANGES Proportional to 4 – 20mA DC P. 2 / 16 ES-6481 Rev.9

AC: operational voltage range 85 – 264V, 50/60 Hz, approx. 5.5VA DC: operational voltage range for R: 24V ±10% or P: 85 – 143V; ripple 10% p-p max.; approx. 5.5W (approx. 230mA at 24V) Operating temperature: -10 to +50°C (14 to 122°F) Operating humidity: 30 to 85% RH (non-condensing) Grounding: grounding resistance ≤100Ω Mounting: panel flush mounting Dimensions: W110×H110×D126 mm (4.33"×4.33"×4.96") Weight: 500 g (1.10 lbs) PERFORMANCE in percentage of span Accuracy Voltage, current: ±1.0% Watt, var: ±1.5% Power factor: ±3.0% Frequency: ±0.5% Demand: ±1.5% Zero-phase voltage: ±1.5% Max. zero-phase voltage: ±1.5% Watthours: ±2.0% (load current 5 – 100%, power factor 1.0) ±2.5% (load current 10 – 100%, power factor 0.5, lag current) Varhours: ±2.5% (load current 10 – 100%, power factor 0) ±2.5% (load current 20 – 100%, power factor 0.866) ±3.0% (load current 10%, power factor 0.866) Temp. conditioning incl. in the accuray: 23 ±10°C (73.4 ±18°F) Freq. conditioning incl. in the accuracy: 45 – 65 Hz Response time: ≤2 sec. (0 – 100% ±1%) range Power failure protection : VT/CT scaling factors, watthours, max. zero-phase voltage and demand are stored in non-volatile memory. Insulation resistance: ≥100MΩ with 500V DC Dielectric strength: 2000V AC @1 minute (voltage input to current input to trans- mission section to display switch input to aux. power to ground terminal) 2000V AC @1 minute (circuit to ground terminal; not applica- ble to analog or transmission terminal) Surge withstand voltage: 1.2/50 µsec., ±4.5kV (input to output or ground; not applica- ble to analog or transmission terminal) FRONT PANEL CONFIGURATION The front display configuration varies according to model numbers (display items). A. Display LED: 10 mm (.39") 7 segment, orange Display items: DISPLAY x1 kWh x10 kWh V S – T R – S T – R A S R T DISPLAYV RESETAS.R. E F G H J B D A A A C B. Multiplication factor: watt, watthours, var or varhours on the display (A) C. Line current indicators: Pressing DISPLAY (J) or "A" (F) button changes lines (elements). D. Line current indicators: Pressing DISPLAY (J) or "V" (G) button changes lines. E. Primary rating: indicating the primary rating of current, voltage, watt or demand F. Line current switch G. Line voltage switch H. Reset: resetting the max. zero-phase voltage or max. demand; same as the external reset input via output terminals J. Display: changing display items, turning the light on or off; same as the Dis. input via output terminals DISPLAY ITEMS REMARKS Current A (1, N, 2) 4 Single-phase / 3-wire A (R, S, T) 4 3-phase / 3-wire or 4-wire Voltage V (RS, ST, TR) 4 3-phase / 3-wire or 4-wire V (RN, SN, TN) 4 3-phase / 4-wire Watt kW 4 – indicator (reverse flow), ×1, ×10 scaling factor ind. LED Watthours kWh 5 ×1, ×10, ×100 scaling factor LED Var kvar 4 – indicator (lead), ×1, ×10 scaling factor ind. LED Varhours kvarh 5 ×1, ×10, ×100 scaling factor LED Power factor PF 3 – indicator (lead) Frequency Hz 3 Zero-phase voltage V0 4 Max. zero-phase volt. MV0 4 Demand DA 4 Measuring/displaying preset element only Max. demand MDA 4 When values exceed the preset values, corresponding LEDs blink. NO. OF DIGITS Ripple: 0.5% p-p max. Auxiliary supply voltage effect: ±0.1% over voltage P. 3 / 16 ES-6481 Rev.9

Specifications subject to change without notice. EXTERNAL DIMENSIONS mm (inch) ■ SINGLE-PHASE / 2-WIRE or 3-WIRE, 3-PHASE / 3-WIRE CONNECTION MOUNTING REQUIREMENTS mm (inch) ■ PANEL CUTOUT 110 ±1 (4.33 ±.04) 110 ±1 (4.33 ±.04) (.71) (.75) 35 (1.38) 8(.31) 8(.31) 6(.24) M5 SCREW M3 SCREW M4 SCREW 110 ±1 (4.33 ±.04) 110 ±1 (4.33 ±.04) (.71) (.75) 35 (1.38) (.63)M5 SCREW 8(.31) 8(.31) 6(.24) M3 SCREW M4 SCREW ■ 3-PHASE / 4-WIRE CONNECTION 90 ±0.5 (3.54 ±0.2) 160 (6.30) min. 160 (6.30) min. 90 ±0.5 (3.54 ±0.2) 102 0 dia. 2– 6 (.24) dia. Panel Thickness: 1 to 5.5 mm (.04 – .22 in.) P. 4 / 16 ES-6481 Rev.9

MODEL & SUFFIX CODE SELECTION SINGLE-PHASE / 2-WIRE CONNECTION MODEL INPUT (balanced) 0 : Single-phase / 2-wire, 105V / 5A AC DISPLAY ITEMS C : A, V D : A, V, kW E : A, V, kWh F : A, kW, kWh J : A, DA, MDA K :A or DA, MDA, alarm setpoint N :V , kW, kWh P :A or DA or MDA, V, kWh U :V , Hz W :A or DA or MDA, V, alarm setpoint V = Line voltage A = Line current kW = Kilowatt kWh = Kilowatthours Hz = Frequency DA = Demand (current) MDA = Maximum demand (current) OUTPUT (selectable display items codes) 0 : None (J K W with reset input) 1 :4 – 20mA DC, 3 points (C D U) 2 :4 – 20mA DC, 2 points + pulse (E F N P) 3 :4 – 20mA DC, 2 points + reset input (J) 4 : RS-485 (all codes selectable except K W) AUXILIARY POWER SUPPLY M : 85 – 264V AC R : 24V DC P :1 10V DC REMOTE CONTROL 1 : 85 – 132V AC or 85 – 143V DC 2 : 20 – 30V DC 3 : 170 – 264V AC

ORDERING INFORMATION

Specify code number. (e.g. 51U-0D4-M1) CONNECTION DIAGRAM 1SV2 V1C, D, E, F, N, P, W Suffix Codes 1SJ, K (measuring current only) 1L V2 V1U (measuring voltage only) ■ INPUT CT 1 kl KL SOURCE LOAD 1S V3 V2 V11L 3S CH1 CH2 CH3 Dis PN E Output Input Power ■ POWER NPE DC or AC POWER TERMINATOR RS-485 DISPLAY SWITCHING POWER Dis. – +SL

RS-485 Close across the terminator when the unit is located at the end of transmission line. DISPLAY SIWTCHING POWER Dis. Ter
Without Outputs ■ OUTPUT
4 – 20mA DC, 3 points (See the following pages.)
4 – 20mA DC, 2 points + pulse 1 point (See the following pages.)
4 – 20mA DC, 2 points + reset input (See the following pages.) P. 5 / 16 ES-6481 Rev.9

Specifications subject to change without notice. DISPLAY ITEMS & OUTPUTS Items shown in brackets can be displayed when you change settings. Suffix Code: C Suffix Code: D Suffix Code: E TERM. ITEMS CH1 CH2 Dis. A V Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. A V 0 – 0.5 kW (-0.5 – +0.5 kW) Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. A V kWh Display switch. inp. DISPLAY V A DISPLAY V A x1 kW x10 kW DISPLAY V A x10 kWh x1 kWh x100 kWh Suffix Code: J Suffix Code: K TERM. ITEMS CH1 CH2 RESET Dis. A DA (MDA) MDA ext. reset inp. Display switch. inp. TERM. ITEMS ALARM RESET Dis. DA alarm output MDA ext. reset inp. Display switch. inp. DISPLAY A A DA A MDA DISPLAY A MAX A DA A ALARM SET Suffix Code: F TERM. ITEMS CH1 CH2 PULSE Dis. A 0 – 0.5 kW (-0.5 – +0.5 kW) kWh Display switch. inp. DISPLAY A x10 kWh x1 kWh x100 kWh x1 kW x10 kW CH1 CH2 Dis. ++ ––

Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 RESET Dis. ++ ––
Output Connection ALARM RESET Dis.
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 Dis. ++ ––
Output Connection ALARM RESET Dis.
Output Connection Suffix Code: N Suffix Code: P TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. V 0 – 0.5 kW (-0.5 – +0.5 kW) (A) kWh Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. A V (DA, MDA) kWh Display switch. inp. DISPLAY V x10 kWh x1 kWh x100 kWh x1 kW x10 kW DISPLAY V A DA MDA x10 kWh x1 kWh x100 kWh Suffix Code: U TERM. ITEMS CH1 CH2 Dis. V Hz Display switch. inp. DISPLAY Hz V Suffix Code: W TERM. ITEMS ALARM RESET Dis. DA alarm output MDA ext. reset inp. Display switch. inp. DISPLAY V A ALARM SET A P. 6 / 16 ES-6481 Rev.9

MODEL & SUFFIX CODE SELECTION SINGLE-PHASE / 3-WIRE CONNECTION Specify code number. (e.g. 51U-1D4-M1) CONNECTION DIAGRAM 1S V3 V2 V11L 3S CH1 CH2 CH3 Dis PN E Output Input Power ■ POWER NPE DC or AC POWER TERMINATOR RS-485 DISPLAY SWITCHING POWER Dis. – +SL

RS-485 Close across the terminator when the unit is located at the end of transmission line. DISPLAY SIWTCHING POWER Dis. Ter
Without Outputs ■ OUTPUT
4 – 20mA DC, 3 points (See the following pages.)
4 – 20mA DC, 2 points + pulse 1 point (See the following pages.)
4 – 20mA DC, 2 points + reset input (See the following pages.) MODEL INPUT (balanced) 1 : Single-phase / 3-wire, 105V / 210V / 5A AC DISPLAY ITEMS A :A × 3 B :V × 3 C :A × 3, V × 3 D :A × 3, V × 3, kW E :A × 3, V × 3, kWh F :A × 3, kW, kWh J :A × 3, DA, MDA K :A × 3 or DA, MDA, alarm setpoint L : Hz, PF, kW M :P F , k W, kWh N :V × 3, kW, kWh P :A × 3 or DA or MDA, V × 3, kWh Q :A × 3, PF, kW S :A × 3 or PF, kW, kWh U :V × 3, Hz W :A × 3 or DA or MDA, V × 3, alarm setpoint Y : Hz, PF, kWh V = Line voltage A = Line current kW = Kilowatt kWh = Kilowatthours PF = Power factor Hz = Frequency DA = Demand (current) MDA = Maximum demand (current) OUTPUT (selectable display items codes) 0 : None (J K W with reset input) 1 :4 – 20mA DC, 3 points (A B C D L Q U) 2 :4 – 20mA DC, 2 points + pulse (E F M N P) 3 :4 – 20mA DC, 2 points + reset input (J) 4 : RS-485 (all codes selectable except K W) AUXILIARY POWER SUPPLY M : 85 – 264V AC R : 24V DC P :1 10V DC REMOTE CONTROL 1 : 85 – 132V AC or 85 – 143V DC 2 : 20 – 30V DC 3 : 170 – 264V AC 1S V2 VN V11L 2S 2L 1S 1L 2S 2L V2 VN V1 ■ INPUT VN CT N kl KL kl KL SOURCE LOAD C, D, E, F, L, M, N, P, Q, S, W, Y Suffix Codes A, J, K (measuring current only) B, U (measuring voltage only) P. 7 / 16 ES-6481 Rev.9

Specifications subject to change without notice. DISPLAY ITEMS & OUTPUTS Items shown in brackets can be displayed when you change settings. Suffix Code: A Suffix Code: B Suffix Code: C Suffix Code: D Suffix Code: E Suffix Code: F DISPLAY A A N A TERM. ITEMS CH1 CH2 CH3 Dis. A AN Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. V V2N V12 Display switch. inp. TERM. ITEMS CH1 CH2 Dis. A 1 (AN, A2) V1N (V2N, V12) Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. A 1 (AN, A2) V1N (V2N, V12) 0 – 1 kW (-1 – +1 kW) Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. A1 (AN, A2) V1N (V2N, V12) kWh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. A1 (AN, A2) 0 – 1 kW (-1 – +1 kW) kWh Display switch. inp. DISPLAY V 2 – N V 1 – N V 1 – 2 DISPLAY V A N 2 – N 1 – N 1 – 2 DISPLAY V A N x1 kW x10 kW 2 – N 1 – N 1 – 2 DISPLAY V A N x10 kWh x1 kWh x100 kWh 2 – N 1 – N 1 – 2 DISPLAY A N x10 kWh x1 kWh x100 kWh x1 kW x10 kW Suffix Code: J Suffix Code: K TERM. ITEMS CH1 CH2 RESET Dis. A1 (AN, A2) DA (MDA) MDA ext. reset inp. Display switch. inp. TERM. ITEMS ALARM RESET Dis. DA alarm output MDA ext. reset inp. Display switch. inp. DISPLAY A N A N 1 DA A MDA DISPLAY N A MAX A DA A ALARM SET Suffix Code: L Suffix Code: M TERM. ITEMS CH1 CH2 CH3 Dis. Hz PF 0 – 1 kW (-1 – +1 kW) Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. PF 0 – 1 kW (-1 – +1 kW) kWh Display switch. inp. DISPLAY Hz x1 kW x10 kW DISPLAY x10 kWh x1 kWh x100 kWh x1 kW x10 kW Suffix Code: N Suffix Code: P TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. V1N (V2N, V12) 0 – 1 kW (-1 – +1 kW) 1, AN, A2) kWh Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. A1 (AN, A2) V1N (V2N, V12) (DA, MDA) kWh Display switch. inp. DISPLAY V 2 – N 1 – N 1 – 2 x10 kWh x1 kWh x100 kWh x1 kW x10 kW DISPLAY V 2 – N 1 – N 1 – 2 A DA MDA N x10 kWh x1 kWh x100 kWh CH1 CH2 CH3 Dis. ++ –– + –

Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 RESET Dis. ++ ––
Output Connection ALARM RESET Dis.
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection P. 8 / 16 ES-6481 Rev.9

Suffix Code: Q Suffix Code: S TERM. ITEMS CH1 CH2 CH3 Dis. A 1 (AN, A2) PF 0 – 1 kW (-1 – +1 kW) Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. A1 (AN, A2) 0 – 1 kW (-1 – +1 kW) (PF) kWh Display switch. inp. DISPLAY A N x1 kW x10 kW DISPLAY x10 kWh x1 kWh A x100 kWh x1 kW x10 kW Suffix Code: U TERM. ITEMS CH1 CH2 Dis. V1N (V2N, V12) Hz Display switch. inp. DISPLAY Hz V 2 – N 1 – N 1 – 2 Suffix Code: W TERM. ITEMS ALARM RESET Dis. DA alarm output MDA ext. reset inp. Display switch. inp. DISPLAY V 2 – N 1 – N 1 – 2 A ALARM SET N Suffix Code: Y TERM. ITEMS CH1 CH2 PULSE Dis. Hz PF kWh Display switch. inp. DISPLAY Hz x10 kWh x1 kWh x100 kWh CH1 CH2 CH3 Dis. ++ –– + –

Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 Dis. ++ ––
Output Connection ALARM RESET Dis.
Output Connection A DA MDA P. 9 / 16 ES-6481 Rev.9

Specifications subject to change without notice. MODEL 51U-2 / 51U-3 MODEL & SUFFIX CODE SELECTION THREE-PHASE / 3-WIRE CONNECTION Specify code number. (e.g. 51U-2D4-M1) CONNECTION DIAGRAM 1S V3 V2 V11L 3S CH1 CH2 CH3 Dis PN E Output Input Power ■ POWER NPE DC or AC POWER TERMINATOR RS-485 DISPLAY SWITCHING POWER Dis. – +SL

RS-485 Close across the terminator when the unit is located at the end of transmission line. DISPLAY SIWTCHING POWER Dis. Ter
Without Outputs ■ OUTPUT
4 – 20mA DC, 3 points (See the following pages.)
4 – 20mA DC, 2 points + pulse 1 point (See the following pages.)
4 – 20mA DC, 2 points + reset input (See the following pages.) MODEL INPUT (balanced) 2 : Three-phase / 3-wire, 220V / 5A AC 3 : Three-phase / 3-wire, 110V / 5A AC DISPLAY ITEMS A :A × 3 B :V × 3 C :A × 3, V × 3 D :A × 3, V × 3, kW E :A × 3, V × 3, kWh F :A × 3, kW, kWh G : Hz, PF, kvar H :V × 3, MV 0, V0 J :A × 3, DA, MDA K :A × 3 or DA, MDA, alarm setpoint L : Hz, PF, kW M :P F , k W, kWh N :V × 3, kW, kWh P :A × 3 or DA or MDA, V × 3, kWh Q :A × 3, PF, kW R :A × 3, PF, kvar S :A × 3 or PF, kW, kWh T :A × 3, PF, kvarh U :V × 3, Hz W :A × 3 or DA or MDA, V × 3, alarm setpoint X :A × 3, kvar, kvarh Y : Hz, PF, kWh V = Line voltage A = Line current kW = Kilowatt kvar = Kilovar PF = Power factor Hz = Frequency kWh = Kilowatthours kvarh = Kilovarhours DA = Demand (current) MDA = Maximum demand (current) V 0 = Zero-phase voltage MV0 = Maximum zero-phase voltage OUTPUT (selectable display items codes) 0 : None (H J K W with reset input) 1 :4 – 20mA DC, 3 points (A B C D G L Q R U) 2 :4 – 20mA DC, 2 points + pulse (E F M N P S T X Y) 3 :4 – 20mA DC, 2 points + reset input (H J) 4 : RS-485 (all codes selectable except K W) AUXILIARY POWER SUPPLY M : 85 – 264V AC R : 24V DC P :1 10V DC REMOTE CONTROL 1 : 85 – 132V AC or 85 – 143V DC 2 : 20 – 30V DC 3 : 170 – 264V AC 1S V3 V2 V1 Suffix Codes C, D, E, F, G, L, M, N, P, Q, R, S, T, W, X, Y H (measuring max. zero-phase voltage) 1L 3S 3L A, J, K (measuring current only) 1L 3S 3L V3 V2 V1 B, U (measuring voltage only) ■ INPUT UVT CT T S R VV U uv vu kl KL kl KL SOURCE LOAD G1 V3 V2 V1G4 UGVT T S R V W O uvw O af SOURCE LOAD 220V AC can be directly connected to V1, V2 and V3 terminals without VT. P. 10 / 16 ES-6481 Rev.9

DISPLAY ITEMS & OUTPUTS Items shown in brackets can be displayed when you change settings. Suffix Code: A Suffix Code: B Suffix Code: C Suffix Code: D Suffix Code: E Suffix Code: F DISPLAY A R A S A T TERM. ITEMS CH1 CH2 CH3 Dis. A R AS AT Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. V RS VST VTR Display switch. inp. TERM. ITEMS CH1 CH2 Dis. A R (AS, AT) VRS (VST, VTR) Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. A R (AS, AT) VRS (VST, VTR) 0 – 1 kW (-1 – +1 kW) Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) VRS (VST, VTR) kWh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) 0 – 1 kW (-1 – +1 kW) kWh Display switch. inp. DISPLAY V S – T V R – S V T – R DISPLAY V A S R T S – T R – S T – R DISPLAY V A S R T x1 kW x10 kW S – T R – S T – R DISPLAY V A S R T x10 kWh x1 kWh x100 kWh S – T R – S T – R DISPLAY A S R T x10 kWh x1 kWh x100 kWh x1 kW x10 kW Suffix Code: G Suffix Code: H TERM. ITEMS CH1 CH2 CH3 Dis. Hz PF 0 – lag1 kvar (lead1 – lag1 kvar) Display switch. inp. TERM. ITEMS CH1 CH2 RESET Dis. VRS (VST, VTR) MV0 MV0 ext. reset inp. Display switch. inp. DISPLAY V MV0 V V S – T R – S T – R DISPLAY Hz x1 kvar x10 kvar Suffix Code: J Suffix Code: K Suffix Code: L Suffix Code: M TERM. ITEMS CH1 CH2 RESET Dis. AR (AS, AT) DA (MDA) MDA ext. reset inp. Display switch. inp. TERM. ITEMS ALARM RESET Dis. DA alarm output MDA ext. reset inp. Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. Hz PF 0 – 1 kW (-1 – +1 kW) Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. PF 0 – 1 kW (-1 – +1 kW) kWh Display switch. inp. DISPLAY A S R T A S RDA T A MDA DISPLAY S R T A MAX A DA A ALARM SET DISPLAY Hz x1 kW x10 kW DISPLAY x10 kWh x1 kWh x100 kWh x1 kW x10 kW CH1 CH2 CH3 Dis. ++ –– + –

Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 RESET Dis. ++ ––
Output Connection CH1 CH2 RESET Dis. ++ ––
Output Connection ALARM RESET Dis.
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection P. 11 / 16 ES-6481 Rev.9

Specifications subject to change without notice. Suffix Code: N Suffix Code: P Suffix Code: Q Suffix Code: R Suffix Code: S Suffix Code: T TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. VRS (VST, VTR) 0 – 1 kW (-1 – +1 kW) R, AS, AT) kWh Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. AR (AS, AT) VRS (VST, VTR) (DA, MDA) kWh Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. A R (AS, AT) PF 0 – 1 kW (-1 – +1 kW) Display switch. inp. TERM. ITEMS CH1 CH2 CH3 Dis. A R (AS, AT) PF 0 – lag1 kvar (lead1 – lag1 kvar) Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. AR (AS, AT) 0 – 1 kW (-1 – +1 kW) (PF) kWh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) PF kvarh Display switch. inp. DISPLAY V S – T R – S T – R x10 kWh x1 kWh x100 kWh x1 kW x10 kW DISPLAY V S – T R – S T – R A DA MDA S R T x10 kWh x1 kWh x100 kWh DISPLAY A S R T x1 kW x10 kW DISPLAY A S R T x1 kvar x10 kvar DISPLAY x10 kWh x1 kWh A x100 kWh x1 kW x10 kW R T DISPLAY A S R T x10kvarh x1kvarh x100kvarh Suffix Code: U TERM. ITEMS CH1 CH2 Dis. V RS (VST, VTR) Hz Display switch. inp. DISPLAY Hz V S – T R – S T – R Suffix Code: W TERM. ITEMS ALARM RESET Dis. DA alarm output MDA ext. reset inp. Display switch. inp. DISPLAY V S – T R – S T – R A ALARM SET A S R T Suffix Code: X Suffix Code: Y TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) 0 – lag1 kvar (lead1 – lag1 kvar) kvarh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. Hz PF kWh Display switch. inp. DISPLAY A S R T x10 kvarh x1 kvarh x100 kvarh x1 kvar x10 kvar DISPLAY Hz x10 kWh x1 kWh x100 kWh CH1 CH2 PULSE Dis. ++ ––

Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 Dis. ++ ––
Output Connection ALARM RESET Dis.
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection P. 12 / 16 ES-6481 Rev.9

MODEL & SUFFIX CODE SELECTION THREE-PHASE / 4-WIRE CONNECTION Specify code number. (e.g. 51U-4D4-M1) CONNECTION DIAGRAM TERMINATOR RS-485 DISPLAY SWITCHING POWER Dis. – +SL

RS-485 Close across the terminator when the unit is located at the end of transmission line. DISPLAY SIWTCHING POWER Dis. Ter
Without Outputs ■ OUTPUT
4 – 20mA DC, 3 points (See the following pages.)
4 – 20mA DC, 2 points + pulse 1 point (See the following pages.)
4 – 20mA DC, 2 points + reset input (See the following pages.) MODEL INPUT (balanced) 4 : 3-phase / 4-wire, 110V / √ 3 V / 5A AC DISPLAY ITEMS A :A × 3 B :V × 3 C :A × 3, V × 3 D :A × 3, V × 3, kW E :A × 3, V × 3, kWh F :A × 3, kW, kWh G : Hz, PF, kvar J :A × 3, DA, MDA L : Hz, PF, kW M :P F , k W, kWh N :V × 3, kW, kWh P :A × 3 or DA or MDA, V × 3, kWh Q :A × 3, PF, kW R :A × 3, PF, kvar S :A × 3 or PF, kW, kWh T :A × 3, PF, kvarh U :V × 3, Hz X :A × 3, kvar, kvarh Y : Hz, PF, kWh V = Line voltage A = Line current kW = Kilowatt kvar = Kilovar PF = Power factor Hz = Frequency kWh = Kilowatthours kvarh = Kilovarhours DA = Demand (current) MDA = Maximum demand (current) V 0 = Zero-phase voltage MV0 = Maximum zero-phase voltage OUTPUT (selectable display items codes) 0 : None (J with reset input) 1 :4 – 20mA DC, 3 points (A B C D G L Q R U) 2 :4 – 20mA DC, 2 points + pulse (E F M N P S T X Y) 3 :4 – 20mA DC, 2 points + reset input (J) 4 : RS-485 AUXILIARY POWER SUPPLY M : 85 – 264V AC R : 24V DC P :1 10V DC REMOTE CONTROL 1 : 85 – 132V AC or 85 – 143V DC 2 : 20 – 30V DC 3 : 170 – 264V AC 2L 2S 1L 1S3S 3L CH1 CH2 CH3 Dis Output Input Power Input V1 E NPV 2 V3 VN V1 E NPV 2 V3 VN ■ POWER & INPUT CT N T S R kl KL kl KL kl KL SOURCE LOAD 2L 2S 1L 1S3S 3L VN U VT UU V uuu VV vv v Suffix Codes C, D, E, F, G, L, M, N, P, Q, R, S, T, X, Y Suffix Codes C, D, E, F, G, L, M, N, P, Q, R, S, T, X, Y 2L 2S 1L 1S3S 3L A, J (measuring current only) B, U (measuring voltage only) E N P A, J (measuring current only) V1 E NPV 2 V3 VN B, U (measuring voltage only) DC or AC POWER P. 13 / 16 ES-6481 Rev.9

Specifications subject to change without notice. DISPLAY ITEMS & OUTPUTS Items shown in brackets can be displayed when you change settings. Suffix Code: A Suffix Code: B Suffix Code: C Suffix Code: D Suffix Code: E Suffix Code: F DISPLAY A R A S A T TERM. ITEMS CH1 CH2 CH3 Dis. A R AS AT Display switch. inp. TERM. ITEMS CH1 CH2 CH3 CH1/2/3 Dis. VRS VST VTR (VRN, VSN, VTN) Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 Dis. AR (AS, AT) VRS (VST, VTR) (VRN, VSN, VTN) Display switch. inp. TERM. ITEMS CH1 CH2 CH3 CH1/2/3 Dis. AR (AS, AT) VRS (VST, VTR) 0 – 1 kW (-1 – +1 kW) RN, VSN, VTN) Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. AR (AS, AT) VRS (VST, VTR) (VRN, VSN, VTN) kWh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) 0 – 1 kW (-1 – +1 kW) kWh Display switch. inp. DISPLAY S – N(T) R – N(S) T – N(R) DISPLAY A S R T S – N(T) R – N(S) T – N(R) DISPLAY A S R T x1 kW x10 kW DISPLAY A S R T x10 kWh x1 kWh x100 kWh DISPLAY A S R T x10 kWh x1 kWh x100 kWh x1 kW x10 kW V LINE PHASE V LINE PHASE V LINE PHASE S – N(T) R – N(S) T – N(R) V LINE PHASE S – N(T) R – N(S) T – N(R) V LINE PHASE V LINE PHASE Suffix Code: G TERM. ITEMS CH1 CH2 CH3 Dis. Hz PF 0 – lag1 kvar (lead1 – lag1 kvar) Display switch. inp. DISPLAY Hz x1 kvar x10 kvar Suffix Code: J Suffix Code: L TERM. ITEMS CH1 CH2 RESET Dis. AR (AS, AT) DA (MDA) MDA ext. reset inp. Display switch. inp.TERM. ITEMS CH1 CH2 CH3 Dis. Hz PF 0 – 1 kW (-1 – +1 kW) Display switch. inp. DISPLAY A S R T A S RDA T A MDA DISPLAY Hz x1 kW x10 kW Suffix Code: M TERM. ITEMS CH1 CH2 PULSE Dis. PF 0 – 1 kW (-1 – +1 kW) kWh Display switch. inp. DISPLAY x10 kWh x1 kWh x100 kWh x1 kW x10 kW Suffix Code: N TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. VRS (VST, VTR) 0 – 1 kW (-1 – +1 kW) (AR, AS, AT) (VRN, VSN, VTN) kWh Display switch. inp. DISPLAY x10 kWh x1 kWh x100 kWh x1 kW x10 kW V S – N(T) R – N(S) T – N(R) LINE PHASE Suffix Code: P TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. AR (AS, AT) VRS (VST, VTR) (VRN, VSN, VTN) (DA, MDA) kWh Display switch. inp. DISPLAY A DA MDA S R T x10 kWh x1 kWh x100 kWh V S – N(T) R – N(S) T – N(R) LINE PHASE CH1 CH2 CH3 Dis. ++ –– + –

Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 RESET Dis. ++ ––
Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection P. 14 / 16 ES-6481 Rev.9

Suffix Code: R Suffix Code: S Suffix Code: T TERM. ITEMS CH1 CH2 CH3 Dis. A R (AS, AT) PF 0 – lag1 kvar (lead1 – lag1 kvar) Display switch. inp. TERM. ITEMS CH1 CH2 CH1/CH2 PULSE Dis. AR (AS, AT) 0 – 1 kW (-1 – +1 kW) (PF) kWh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) PF kvarh Display switch. inp. DISPLAY A S R T x1 kvar x10 kvar DISPLAY x10 kWh x1 kWh A x100 kWh x1 kW x10 kW R T DISPLAY A S R T x10kvarh x1kvarh x100kvarh Suffix Code: Q TERM. ITEMS CH1 CH2 CH3 Dis. A R (AS, AT) PF 0 – 1 kW (-1 – +1 kW) Display switch. inp. DISPLAY A S R T x1 kW x10 kW Suffix Code: U TERM. ITEMS CH1 CH2 CH1/CH2 Dis. VRS (VST, VTR) Hz RN, VSN, VTN) Display switch. inp. DISPLAY Hz Suffix Code: X Suffix Code: Y TERM. ITEMS CH1 CH2 PULSE Dis. AR (AS, AT) 0 – lag1 kvar (lead1 – lag1 kvar) kvarh Display switch. inp. TERM. ITEMS CH1 CH2 PULSE Dis. Hz PF kWh Display switch. inp. DISPLAY A S R T x10 kvarh x1 kvarh x100 kvarh x1 kvar x10 kvar DISPLAY Hz x10 kWh x1 kWh x100 kWh V S – N(T) R – N(S) T – N(R) LINE PHASE CH1 CH2 CH3 Dis. ++ –– + –

Output Connection CH1 CH2 CH3 Dis. ++ –– + –
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection CH1 CH2 PULSE Dis. ++ ––
Output Connection P. 15 / 16 ES-6481 Rev.9

Specifications subject to change without notice. SYSTEM CONFIGURATION EXAMPLE D ISPLAY A V x1kW x10kW R S T R-S S -T T-R D ISPLAY A V x1kW x10kW R S T R-S S -T T-R D ISPLAY A V x1kW x10kW R S T R -S S-T T-R Communication Interface for 51-UNIT Use model: SMDU 32 Units Max. 32 Points Max. Nest Bus RS-485 (Multi-Meter Protocol, 31 units per kilometer)* Multi Power Meter model: 51U *MsysNet use only. Consult Factory. P. 16 / 16 ES-6481 Rev.9

Product Information

51U-0B1-R1 specifications and overview.

Summary

Panel Mounted Multi Power Meter 51-UNIT

Description

Panel Mounted Multi Power Meter 51-UNIT

Source title 51U-0B1-R1 Datasheet(PDF) - M-System Co.,Ltd.

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