User Manual
A Power Supply
The power supply for this meter is AC 85-265V (45-55Hz) or DC 85-300V. Terminals for the power
supply are (L/+,N/-). The typical power supply wiring is as followed:
If the quality of power is poor or there is an EMI problem, it’s recommended to equip an EMC filter
in the auxiliary power supply loop. The mode of wiring is as followed.
B Communication Interface
This meter support RS485 serial communication and the ModbusRTU protocol. Terminals for wiring
are 485A, 485B, 485PG. The transmission medium of RS485 is shielded twisted pair (STP). And the
terminal RS485PG should be connected with ground through Shielding layer.
标号为
485PG
端子需要接屏蔽双绞线的屏蔽层，屏蔽层需单端接地。
C Other wiring
1)
Relay Control
It is used for limit alarm output and switching on/off output.
The output capacity of control node is
AC5A/220V or DC1A/30V.
2)
Energy Pulse Output (Pulse Constant
：
6400imp/kWh)
