
6
N GL
220Vac
com
V+
R1
R2
RO
Auxiliary Power
Module
P1
P2
DO
V+
OUT
COM
Relay Output Wiring Diagram Pulse Output (DO) Wiring Diagram
Settings Mode
Meter Setting
Press and release the “SET” key to enter settings mode, now the password is
pressing the “SCROLL” key, and shift the cursor by pressing the “SET” key. When the
input. The meter’s default password is 0000. After entering the settings mode, you
also be change through the PC software.
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LCD Page Contents KW350
Addr Address S-01
bd Baud Rate S-02
Pr Parity S-03
Ct CT1 S-09
CT2 S-10
Pt PT1 S-11
PT2 S-12
In settings mode, scroll to the page S-01 to set the communication address, the
address can be any integer between 1 and 247. Setting method is as follows: Press
shift the cursor by “SET” key, when the cursor is moved to the rightmost location,
The other settings are the same as the operation of address.
The communication baud rate can be set to 1200, 2400, 4800, 9600, 19200 or
38400.
The communication parity can be set to EVEN, ODD, NONE1 or NONE2.
Communication
KW350 meter communication uses RS485 interface and Modbus -RTU
protocol. Wiring terminals are A, B, S. If master device does not support RS485 but
only RS232, an adapter named RS232/RS485 needs to be used for connection. In
practical alapplications, there are multiple topologies for RS485 network, such as
Line, Star and Wye. In addition, the Display Module has an infrared port to support
8
Energy Pulse Output
Users can choose either energy pulse output or reactive energy pulse output. The
energy pulse output function needs an external auxiliary power to supply.
Relay Output(RO)
Two modes available: control or alarm output. One module only supports one
mode at a time.
Event Logging
The KW350 series also provides a system status self-testing feature. When
crucial operations are implemented (such as programming, open/close the cover,
clear the demand, clear the meter's data etc), it immediately logs the event time
and the event type.
Current Input
Rated Current 100mV (1A)
Start Current 10mA
Accuracy 0.5%
Voltage Input
Rated Voltage 400Vac L-N 690Vac L-L
Input Impedance 2MΩ/Phase
Measurement Frequency 50/60Hz
Accuracy 0.5%
Power Supply
Working Power Supply 100~415Vac,50/60Hz; 100~300Vdc
Power Consumption <2W or 10VA
KW350