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4R-D7 Modbus RTU Relay Module
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Product Description
4R-D7 Modbus RTU relay module
The 4R-D7 module allows you to control 4 relays using Modbus RTU protocol Communication with the device can be done via RS-485 or UART TTL interface. In addition, the device has 4 control inputs protected by optocouplers (input voltage range: 3.3 V ... 30 V). The voltage from the control inputs is not the voltage directly supplying the relay coil. Note: The selection of the control interface is made using jumpers located on the board It is not possible to control the outputs using both communication paths simultaneously.
Technical specifications:
| Control: | RS-485 / UART TTL |
| Protocol: | Modbus RTU |
| Baudrate: | 4800 / 9600 / 19200 b/s (default: 9600 b/s) |
| Number of inputs: | 4 pcs. |
| Number of relay outputs: | 4 pcs. |
| Load capacity of contacts: | 10 A / 250 V AC, 10 A / 30 V DC |
| Output: | 4 x NO/NC |
| Selected features: |
|
| Power supply: | 7 V ... 24 V DC (no power supply included) |
| Weight: | 0.092 kg |
| Dimensions: | 93 x 91 x 20 mm |
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