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Wiring
10
KW2M-A/X User's Manual
Chapter 4 Wiring
Make sure to wire the device correctly according to the terminal arrangement and the wiring diagrams.
Please connect a fuse or a breaker to the power supply for safety reasons and to protect the device.
The device has no built-in power switch, circuit breaker or fuse for measured voltage input parts.
Therefore, it is necessary to install them in the circuit near this unit.
Do not turn on the power supply or input until all wiring is completed.
4.1 Main unit terminal arrangement
Power supply terminals
Terminal
number
1
2
Functions
L +
N
-
Power supply
Voltage input terminals
Terminal
number
1
2
3
4
5
6
7
Functions
V1
NC
V2
NC
V3
NC
Vn
Measured
voltage
V ACant
Measured
voltage
V ACant
Measured
voltage
V ACant
Measured
voltage
*Do not use NC (V ACant) terminals.
Current input terminals
Terminal
number
1
2
3
4
5
6
7
8
9
10
11
12
Functions
K
L
K
L
K
L
K
L
K
L
K
L
CH1(CT1)
CH1(CT2)
CH1(CT3)
CH2(CT1)
CH2(CT2)
CH2(CT3)
Measured current (CH1)
Measured current (CH2)
RS485 communication terminals
Terminal
number
1
2
3
4
5
6
Functions
+
+
-
-
END
END
*Each terminal is connected internally.
Pulse I/O terminals
Terminal
number
1
2
3
4
5
6
Functions
+
-
+
-
+
-
Pulse input
Pulse output (CH1)
Pulse output (CH2)
* OUT1 and OUT2 are insulated.
The input voltage to each terminal is as follows.
Terminal
Phase and wire system
Terminal No.
Input voltage
Power
supply
Single-phase two-wire
1 - 2
(L+ - N
-
)
100-240V AC
Voltage input terminals
Measured
voltage
input
Single-phase two-wire
1 - 7
(V1-Vn)
0-690V AC
(L-L)
Single-phase three-wire
1 - 5 - 7
(V1-V3-Vn)
0-690V AC
0-345V AC
(L-L)
(L-N)
Three-phase three-wire
1 - 5 - 7
(V1-V3-Vn)
0-690V AC
(L-L)
Three-phase four-wire
1 - 3 - 5 - 7
(V1-V2-V3-Vn)
0-690V AC
0-398V AC
(L-L)
(L-N)