Details
Modbus RTU Protocol, Multi Isolation Protection Circuits, Safe & Stable & Reliable
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
| 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 |
30A high current relay, Onboard high quality screw terminals with covers, more convenient for high current wiring
Multiple protections for safer and more reliable use
With Multiple LED Indicators, Easy To Monitor The Operating Status
Rail-mounted ABS plastic enclosure, easy to install, safe to use
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
for reference only, the USB TO RS232/485/TTL converter is Not included
Contact rating of the onboard relay up to 30A 250V AC or 30A 28V DC
* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.
| product | Communication parameters | Relay type | Output control | Input control | Power range | Dimensions |
|---|---|---|---|---|---|---|
| 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
- The power supply of this product is not included, it is recommended to purchase 12V power supply if you need it.
- It is also recommended to purchase USB TO RS232/485/TTL or USB TO RS485 at the same time for easy testing.
Modbus RTU Relay (E) x1
