EM735 ct connected meter

3 phase 4 wire energy meter connection 230V s0 output din rail  power meter

Benefits and Main Features

 Three phase metering

 Standard DIN rail Format (DIN43880)

CI.1 Accuracy (EN50470)

Energy consumption LED

Isolate pulse output and IR (DIN43864)

LCD display, 5 integer 2 decimal

 Large clear backlight display

 Internal transformer

transformer metering 1.5(6)A

 27 CT rate can be selected

Optional single-phase model

Smart communication port RS485

Program by button on the nameplate

Memory back-up (EEprom)

7 DIN modules

CE approval

Meter specification

Reading the meter

The smart energy meter is equipped with 6+1 LCD display, which is used as recording consumption and can’t be reset to zero. The number system is based on units of 10. And unit is kWh.

Another way through RS485 and PC software or HHU(hand held unit)unit can read power consumption

Pulse output

Smart din rail energy meter is equipped with a pulse output which is fully separated from the inside circuit. That generates pulses in proportion to the measured energy. They are test pulse output (pins 24 & 25). Usually, the test pulse output is used as testing accuracy or reading purpose in close quarters.

The test pulse output is a polarity dependant, passive transistor output requiring an external voltage source for correct operation. For this external voltage source, the voltage (Ui) should be 5-27V DC, and the maximum input current (Imax) should be 27mA DC. To connect the impulse output, connect 5-27V DC to connector 25 (anode), and the signal wire (S) to connector 24 (cathode). The meter pulses is indicated on the front panel.

Far Infrared interface

The far infrared communication port is on the right of LCD screen. It is infrared wireless communication port. HHU(hand held unit) can directly communicate the data between the meter and this port.The data transmission speed is 1200bps.The communication distance is not less than 5m.

Communication port

Smart meter has equipped communication port, we can program the meter’s operation data or reading via these 2 ports.(Pin26 pin27) .   

Programming

 By pressing the keys “SET” starts menu programming mode.

password verify

On the smart meter display will appear : CodE followed by the currently memorized value . With the set key, you can move the cursor to the right .Use the page down and page up. page up button can setup the Number from first two digits from 00 to 25.

for example: 000 to 250

Page down button can setup the number the third digit from 0 to 9.

 for example: 000 to 009

CT rate setting

On the smart meter display appear: CT followed by the currently memorized value .With the set key, you can move the cursor to the right . Use the page down and page up, you can set one of the following values:

5:5        125:5     400:5     1000:5     2500:5     7500:5

50:5       150:5     500:5     1200:5     3000:5

60:5       200:5     600:5     1500:5     4000:5

75:5       250:5     750:5     2000:5     5000:5

100:5      300:5     800:5     2400:5     6000:5

 Close the new settings, press the “set” key

Baud rate setting

On smart meter display will appear: bAUd followed by the currently memorized value

With the “Set” key, you can move the cursor to the right . With the page down and page up, you can set one of the following values:

1200=1200bit/sec

2400=2400bit/sec

4800=4800bit/sec

9600=9600bit/sec

Address setting

On smart meter display will appear: Addr  followed by the currently memorized value

With the “Set” key, you can move the cursor to the right . With the page down and page up, you can set one of the following values:

      001

      ……

      ……

      255

Noted: modbus address rage is 001---to 255 

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