XDB1003-4 Series 485 Relay

Short Description:

The XDB1003-4 series from XIDIBEI SENSOR & CONTROL is a versatile relay module designed for industrial automation and control applications. It features two-way relay control, four-way switch input, and supports both RS485 and RS232 communication interfaces. The module offers multiple control modes including non-locking, self-locking, and interlocking linkage modes. It supports a wide operating voltage range of DC7-30V and has a durable design capable of handling up to 10A at 250VAC. With compatibility for Modbus RTU protocol and a configurable baud rate, the XDB1003-4 series is suitable for various automation tasks, offering reliable performance in extreme temperatures ranging from -40℃ to 85℃.

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Product Detail

Product Tags

Features

1.DC7-30V
2.Relay output contact isolation
3.Communication interface supports RS485 or RS232
4.Communication baud rate: 2400, 4800, 9600, 19200, 38400 (can be modified by software, default 9600
5.Communication protocol: support standard modbus RTU protocol
6.0-255 device addresses can be set, 5-bit address dip switch can set 1-31 address codes, greater than 31 can be set by software
7.With flash on and flash off function, you can bring parameters in the command, operate the relay to open for a period of time and automatically close
8.With strobe function, the controller relay can be periodically switched on and off

Parameters

Interface Description & Communication Wiring Description

Serial number	Pin	Description
1	+	Positive power supply
2	-	Negative power supply
3	VIN	For passive input, VIN and COM are short-circuited. Please refer to the input wiring diagram for details
4	COM+	For passive input, VIN and COM are short-circuited. Please refer to the input wiring diagram for details
5	IN1	First switch input
6	IN2	Second switch input
7	IN3	Third switch input
8	IN4	Fourth switch input
9	COM-	Used for passive input, see input wiring diagram for details
10	Normally open	The first relay output is normally open
11	Common terminal	The first relay output is common
12	Normally closed	The first relay output is normally closed
13	Normally open	The second relay output is normally open
14	Common terminal	The second relay output is common
15	Normally closed	The second relay output is normally closed
16	Normally open	The third relay output is normally open
17	Common terminal	The third relay output is common
18	Normally closed	The third relay output is normally closed
19	Normally open	The fourth relay output is normally open
20	Common terminal	The fourth relay output is common
21	Normally closed	The fourth relay output is normally closed

RS485 cascade wiring method

The computer's built-in serial port is usually RS232, which requires a 232-485 converter (active and isolated converters are recommended for industrial environments). After conversion, RS485 is divided into two wires, A and B. A is connected to the A terminal on the board, and B is connected to the B terminal on the board. The 485 shield can be connected to GND. If there are many devices, it is recommended to use twisted shielded cables and a chain network structure.

Input and output wiring

Relay Wiring Instructions