Industrial Modbus RTU 8-ch Relay Module (E) with RS485 Interface, 30A High Current, Multi Isolation Protection Circuits, Rail-mounted Case

SKU:30459
Part No.:Modbus RTU Relay (E)
Brand:Waveshare

$51.99
PriceQuantity
1
$50.792
$50.193
$49.954+
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Details

Industrial Modbus RTU 8-ch Relay Module (E) with RS485 Interface, 30A High Current, Multi Isolation Protection Circuits, Onboard Optocoupler Isolation, Built-in Flyback Diode Protection, Rail-mounted Case
RS485 8-ch High Current Relay Module

Modbus RTU Protocol, Multi Isolation Protection Circuits, Safe & Stable & Reliable

Industrial Modbus RTU 8-ch Relay Module (E), front view
Features At A Glance

This is an industrial 8-ch relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, ADI magnetical isolation, resettable fuse, and TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay (E) 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 requirement.

  • Configurable device address (1~255), multi devices can be cascaded on RS485 bus
  • Features flash-on, flash-off function, by passing arguments to the command, it is possible to turn on the relay for a while and then close it automatically
  • Onboard voltage regulator, supports 7V~36V wide voltage supply
  • Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
  • Onboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
  • 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
  • Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
  • Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
  • High quality relay, contact rating: ≤30A 250V AC or ≤30A 28V DC
  • Rail-mounted ABS plastic enclosure, easy to install, safe to use
  • 3 LEDs for indicating the MCU status and signal transceiving status

Specifications
Power supply 7~36V
Communication interface RS485
Baudrate 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
Default communication format 9600, N, 8, 1
Relay channels 8
Contact form 1NO 1NC
contact rating ≤30A 250V AC or ≤30A 28V DC
Communication protocol Standard Modbus RTU protocol
RS485 address 1~255
LED indicators STA: MCU indicator, keeps flashing when the MCU is normally working
TXD: TX indicator, lights up when sending data
RXD: RX indicator, lights up when receiving data

High Current Screw Terminals

30A high current relay, Onboard high quality screw terminals with covers, more convenient for high current wiring

Industrial Modbus RTU 8-ch Relay Module (E), onboard high quality screw terminal

Hardware Analysis

Multiple protections for safer and more reliable use

Industrial Modbus RTU 8-ch Relay Module (E), onboard components

Interfaces & Indicators

With Multiple LED Indicators, Easy To Monitor The Operating Status

Industrial Modbus RTU 8-ch Relay Module (E), onboard multiple LED indicators

Enclosure Design

Rail-mounted ABS plastic enclosure, easy to install, safe to use

Industrial Modbus RTU 8-ch Relay Module (E), with ABS plastic enclosure
RS485 Communication

Configurable device address (1~255), multi devices can be cascaded on RS485 bus

In case of many devices are cascaded, or communication distance is quite long, it is necessary to use RS485 repeaters

Industrial Modbus RTU 8-ch Relay Module (E), RS485 communication connection

for reference only, the USB TO RS232/485/TTL converter is Not included

Relay connection

Contact rating of the onboard relay up to 30A 250V AC or 30A 28V DC

Industrial Modbus RTU 8-ch Relay Module (E), connection examples with load
Applications
Industrial Modbus RTU 8-ch Relay Module (E), applications
Product show
Industrial Modbus RTU 8-ch Relay Module (E), product show
Outline dimensions
Industrial Modbus RTU 8-ch Relay Module (E), outline dimensions
Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.

Selection Guide
productCommunication parametersRelay typeOutput controlInput controlPower rangeDimensions
Modbus RTU Relay RS485 port 10A Universal Relay 8-ch - 5V 145×90×40mm
Modbus RTU Relay (B) 10A Universal Relay 8-ch - 7V~36V 175×90×40mm
Modbus RTU Relay (C) 10A Latching Relay 8-ch - 7V~36V 145×90×40mm
Modbus RTU Relay (D) 10A Universal Relay 8-ch 8-ch 7V~36V 175×90×40mm
Modbus RTU Relay (E) 30A High Current Relay 8-ch - 7V~36V 200×110×60mm
Modbus RTU Relay 16CH 10A Universal Relay 16-ch - 5V 200×110×60mm
Modbus RTU Relay 32CH 10A Universal Relay 32-ch - 7V~36V 300×110×60mm
Modbus POE ETH Relay Ethernet port (PoE support) 10A Universal Relay 8-ch - 7V~36V 145×90×40mm
Modbus POE ETH Relay (B) 10A Universal Relay 8-ch 8-ch 7V~36V 175×90×40mm
Modbus POE ETH Relay 30CH 10A Universal Relay 30-ch - 7V~36V 300×110×60mm

Weight: 0.534 kg

Quick Overview

Modbus RTU Relay (E) x1

Modbus RTU Relay (E)