Modbus RTU 12 SSR / 8 IN I/O Module

Universal 12-SSR Output and 8-Input Control Board via RS485 and Modbus RTU

SKU:   MD20003
EAN:   5902186335806

The MODIG Modbus RTU 12 SSR / 8 IN module features 12 solid-state relays (SSR) and 8 galvanically isolated inputs. All outputs and inputs are fully controlled and read via standard Modbus commands transmitted through an RS485 interface. Built for high-reliability environments, the control interface includes integrated galvanic isolation and surge protection, ensuring stable performance even in installations prone to severe electromagnetic interference. Both communication parameters and operational settings of the module can be flexibly configured to meet the demands of various applications.

Key Features and Specifications

  • SSR Outputs: 12 independent solid-state relay channels (AC only)
    • Voltage Range: 100 V to 240 VAC
    • Current Rating: 0.1 A to 2 A per channel
    • Switching Type: Zero-cross switching (reduces inrush current and electrical noise)
    • Total Current Limit: Total combined current across all outputs must not exceed 10 A
  • Optoisolated Inputs: 8 digital channels (ON/OFF status); Active high with an input voltage range of 5 V to 25 VDC
  • Input Current Consumption: Approximately 2 mA to 12 mA within the 5 V to 25 VDC range
  • RS485 Interface: Features robust galvanic isolation and integrated surge protection
  • Configurable Communication Parameters:
    • Baud Rate: Adjustable from 1200 bps to 1,000,000 bps (1 Mbps)
    • Parity: None / Even / Odd
    • Stop Bits: 1 / 1.5 / 2
  • Power Supply Options:
    • 5 VDC Line: 4.9 V to 5.3 VDC (minimum 0.5 A source required) via USB-C port or 2.1/5.5 mm DC barrel jack
    • Industrial Line: 7 V to 28 VDC (minimum 0.5 A source required) via Phoenix Contact MC 3.81 mm terminal block
  • Control & Configuration: Fully managed via standard Modbus commands
  • Telemetry & Diagnostics: Real-time monitoring of power supply voltage (on the 5 V rail) and internal module temperature
  • Dimensions: 200 x 110 x 60 mm
  • Mounting: Designed for standard 35 mm DIN rail (DIN-35)

Package Includes

  • MODIG Modbus RTU 12 SSR / 8 IN module
  • 5 V / 2 A power supply adapter