Modbus RTU 32-CH Relay Module RS485 multiple isolation protection circuits

This product is an industrial 32-ch relay module controlled via RS485 bus, adopts Modbus RTU protocol, built-in protection circuits such as power supply isolation, magnetical isolation, resettable fuse, and TVS diode, etc. It also comes with an ABS case.

The Modbus RTU 32-Ch Relay is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirements.

• Configurable device address (1~255), multi devices can be cascaded on RS485 bus
• Features flash-on, flash-off function, it is possible to turn on the relay for a while and then close it automatically via the command
• Onboard voltage regulator chip, supports 7~36V wide voltage power supply
• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
• Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
• Onboard dedicated relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable
• Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
• High quality relay, contact rating: ≤10A 250VAC/30VDC
• Rail-mounted ABS case, easy to install, safe to use
• 3 LEDs for indicating the MCU status and signal transceiving status

Specifications

• Operating voltage: 7-36 Volt
• Communication Interface: RS485
• Baudrate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
• Default communication format: 9600, N, 8, 1
• Relay channels: 32
• Contact form: 1NO, 1NC
• Communication Protocol: Standard Modbus RTU protocol
• RS485 Address: 1-255
• LED indicators:
  • STA: MCU indicator, keep flashing when the MCU normally working
  • TXD: TX indicator, lights up when sending data
  • RXD: RX indicator, lights up when receiving data