17
Digital Input
Digital input adopts dry contact mode. There is internal power supply for
digital input so that there is no need for external power supply.
There are four working modes for digital input as follows
：
1)State monitoring mode
：
It is used to monitor the state of breaker, the
position of handcart, etc. The state of digital inputs can be indicated locally or
read remotely through communication.
2)Pulse counter mode
：
Meter counts pulse numbers from input terminal.
Pulse counting adds one when meter receives one pulse.
3) Spare energy synchronization
：
Terminal status is used as synchronization
signal. Spare energy metering starts after meter received the signal. This
function is effective in DM9 module.
4)Tariff energy setting mode
：
This function is valid in DM7 module.
Digital
input is used for setting tariffs. There are sixteen kinds of tariffs. Meter
accumulates energy of present period to corresponding tariff period. The
function is effective in DM7 module.
▲
▼
MENU
Module X1
7.2
Digital Inputs-DM7
No.
04
Mode
State
Pulse
State
Status
Tariffs
03
01
00000056
02
Left picture shows working modes of four
digital input.
Digital input 1 is in tariff energy status;
Digital input 2 is in pulse counting status
with pulse number 56;
Digital input 3 is for Spare energy;
Digital input 4 is for check status, and
there is input signal.
Relay Output
Meter supports two relay outputs. More relay outputs are realized by
connecting DM8 module to meter.
The relay output has three working modes: Energy pulse
、
remote control
and alarm mode.
The relay output module (DM8) has two working modes: remote control and
