E831-RTU (4DI+4RO)

Hardware parameter

Index

Size(H*W*D)

105*75*30 mm

Weight

279g±5g

Interface method

Crimping method，1*12*5.08mm

Operating Voltage

DC8V~28V, 12V or 24V is recommended, over 28V may damage the device

Operating current

12V@ 56mAstand-by current

Communication Interface

RS485：1200~115200bps

4 digital inputs

Dry contact, DI acquisition frequency 1KHz

4 relay outputs

Support 3A30VDC、3A250VAC

Baud rate

Baud rate range 1200~115200bps，factory default 9600

Operating temperature

-20℃~+70℃

storage temperature

-40℃~+85℃

Operating humidity

5%~95%

Storage humidity

1%~95%

No.

Ports and other definitions

Function

Description

1

PE  

Connect with the earth

Connect with the earth

2

GND

Crimped power input negative

Power supply reference ground

3

VCC

Crimped power input positive

Power input, DC 8V ~ 28V, 12V / 24V recommended

4

RS485-G

RS485 signal reference ground

RS485 signal reference ground, it is recommended to connect

5

RS485-A

RS485 interface A

RS485 interface A is connected to device A interface

6

RS485-B

RS485 interface B

RS485 interface B is connected to device B interface

7

DI4

Digital input channel 4

Form dry contact with DIG

8

DI3

Digital input channel 3

Form dry contact with DIG

9

DIG

Digital input signal reference ground

Digital input signal reference ground, used with DI terminal

10

DI2

Digital input channel 2

Form dry contact with DIG

11

DI1

Digital input channel 1

Form dry contact with DIG

12

DIG

Digital input signal reference ground

Digital input signal reference ground, used with DI terminal

13

NO1

Relay 1 normally open pin

Used with relay 1 common terminal

14

COM1

Relay 1 common terminal

Used with relay 1 normally open pin /normally closed pin

15

NC1

Relay 1 normally closed pin

Used with relay 1 common terminal

16

NO2

Relay 2 normally open pin

Used with relay 2 common terminal

17

COM2

Relay 2 common terminal

Used with relay 2 normally open pin /normally closed pin

18

NC2

Relay 2 normally closed pin

Used with relay 2 common terminal

19

NO3

Relay 3 normally open pin

Used with relay 3 common terminal

20

COM3

Relay 3 common terminal

Used with relay 3 normally open pin /normally closed pin

21

NC3

Relay 3 normally closed pin

Used with relay 3 common terminal

22

NO4

Relay 4 normally open pin

Used with relay 4 common terminal

23

COM4

Relay 4 common terminal

Used with relay 4 normally open pin /normally closed pin

24

NC4

Relay 4 normally closed pin

Used with relay 4 common terminal