High-Capacity I/O for Demanding Automation Projects
The Selio 24-Relay Modbus RTU I/O Module is engineered for large-scale industrial automation, offering extensive input/output capabilities, robust construction, and seamless integration with modern control systems. Supporting Modbus RTU via RS485, this module is an ideal choice for complex installations requiring reliable signal management and flexible expansion.
Key Benefits
- 8 Opto-Isolated Digital Inputs (AC/DC): Reliable detection of status signals from industrial sensors and switches, immune to electrical interference.
- 3 Analogue Inputs (8 or 12-bit): Accurate measurement of analogue values from transducers and field devices.
- Temperature Input: Direct connection for temperature probes, enabling process or environmental monitoring.
- 24 Relay Outputs: High-density relay configuration for managing multiple devices, actuators, or circuits simultaneously.
- 3 Analogue Voltage Outputs (0-10V, ±10V): Versatile output for controlling variable speed drives, actuators, or other analogue equipment.
- 1 Analogue Current Output (4-20mA): Standard output for process control and signal transmission.
- Integrated Pressure Sensor: Onboard monitoring of pressure for automation or safety systems.
- Buzzer and LED Indicators: Immediate acoustic and visual feedback for status and troubleshooting.
- Modbus Register Assignment Switches: Simple DIP switch configuration for flexible addressing.
- Remote and Physical Reset: Reset the module via button or remotely through Modbus commands.
- Wide Power Range: Operates from 18VDC to 34VDC, with efficient standby consumption (120mA @ 24VDC).
Effortless Integration with Modbus RTU
The Selio 24-relay module communicates with your network using Modbus RTU over RS485, ensuring compatibility with most industrial control environments. Addressing is straightforward with onboard switches, making system setup and scaling quick and hassle-free.
Extensive Compatibility
- PLCs: Fully compatible with leading brands including Siemens, Allen-Bradley, and Schneider Electric.
- HMIs and CPUs: Integrates with SCADA, BMS, and control systems.
- Any Modbus Device: Universal connectivity with controllers and equipment supporting Modbus RTU.
Ideal for a Range of Applications
- Distributed I/O in large automation networks
- Centralised control of multiple actuators and sensors
- Data logging and industrial monitoring
- Building management and facility automation
- Process control for manufacturing and utilities
- Custom electrical panels and system integration
Why Selio Stands Out
- Industrial-grade reliability: Built for 24/7 operation in harsh conditions
- Comprehensive software support: Includes ready-to-use libraries such as SelioEasyTest
- Cost-effective scalability: Expand I/O capacity without excessive investment
- Multiple configurations: Available with 8, 16, or 24 relay outputs to match your project’s scale
Technical Data
| Feature | Specification |
|---|---|
| Digital Inputs | 8 opto-isolated (AC/DC) |
| Analogue Inputs | 3 (8 or 12-bit) |
| Temperature Input | Yes |
| Relay Outputs | 24 |
| Analogue Voltage Outputs | 3 (0-10V, ±10V) |
| Analogue Current Output | 1 (4-20mA) |
| Pressure Sensor | Yes (integrated) |
| Communication | Modbus RTU (RS485) |
| Power Supply | 18-34VDC |
| Standby Consumption | 120mA @ 24VDC |
| Onboard Components | Buzzer, LEDs, Reset, DIP switches |
Frequently Asked Questions
Q: How is the Selio 24-relay module connected to a PLC or industrial controller?
A: The module connects via RS485 using the Modbus RTU protocol. Modbus addresses are easily set using the onboard DIP switches. Ready-made software libraries are available for rapid deployment.
Q: Are all input and output channels available at once?
A: Yes, all digital and analogue inputs and outputs can be used simultaneously, offering maximum flexibility for complex systems.
Get a Quote or Place an Order
Enhance your automation infrastructure with the Selio 24-Relay Modbus RTU I/O Module. Contact us via chat, email or contact form for tailored pricing and technical advice.
