MODEL
SINGLE-PHASE / 2-WIRE CONNECTION
51U-0
MODEL & SUFFIX CODE SELECTION
CONNECTION DIAGRAM
51U–0❑❑–❑❑
MODEL
P
N
E
INPUT (balanced)
0 : Single-phase / 2-wire, 105V / 5A AC
DISPLAY ITEMS
Power
V1 V2 V3 1S 1L 3S 3L
Input
C : A, V
Output
D : A, V, kW
E : A, V, kWh
CH1
CH2
CH3
Dis
F : A, kW, kWh
J : A, DA, MDA
K : A or DA, MDA, alarm setpoint
N : V, kW, kWh
❑ POWER
DC or AC
POWER
P : A or DA or MDA, V, kWh
U : V, Hz
W : A or DA or MDA, V, alarm setpoint
P
N
E
V = Line voltage
kW = Kilowatt
Hz = Frequency
A = Line current
kWh = Kilowatthours
❑ INPUT
CT
K
L
1
k
l
2
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
1S
V1
1L
V2
Suffix Codes
C, D, E, F, N, P, W
V1
V1
V2
V2
1S
1S
1L
1L
J, K (measuring current only)
U (measuring voltage only)
❑ OUTPUT
R : 24V DC
P : 110V DC
REMOTE CONTROL
•Without Outputs
•4 – 20mA DC, 3 points
(See the following pages.)
Dis.
•4 – 20mA DC, 2 points
+ pulse 1 point
(See the following pages.)
1 : 85 – 132V AC or 85 – 143V DC
2 : 20 – 30V DC
3 : 170 – 264V AC
POWER
POWER
DISPLAY
•RS-485
SIWTCHING
•4 – 20mA DC, 2 points
+ reset input
(See the following pages.)
Dis.
ORDERING INFORMATION
Specify code number. (e.g. 51U-0D4-M1)
+
–
SL
Ter
TERMINATOR
DISPLAY
SWITCHING
Close across the terminator
when the unit is located at
the end of transmission line.
RS-485
P. 5 / 16 ES-6481 Rev.9