IO Module for StamPLC (INA226AIDGSR)

Isolated I/O Expansion for Industrial PLC Automation

StamPLC IO is an electrically isolated IO expansion module designed for the StamPLC host and developed for industrial environments where high- and low-voltage circuits coexist. It provides two active analog acquisition channels, two solid-state relay outputs, and one mechanical relay output. The module supports signal acquisition from industrial active voltage and current sensors while controlling the on/off state of various load circuits. Its onboard STM32G030F6P6 main controller centrally manages external inputs and outputs, relay driving, address assignment, and I2C bus communication over the isolated channel. A hardware DIP switch allows the I2C address to be customized, enabling multiple modules to be connected in parallel or cascaded for flexible IO expansion.

The module integrates a CA-IS3020S digital isolator and B0505M-2WR3 isolated power module to provide complete electrical isolation between the communication bus and power circuit. This design effectively suppresses common-mode interference and surge impacts from sensors and field loads, significantly improving overall system stability. It is suitable for industrial automation applications such as power branch monitoring, low-voltage actuator driving, and sensor power management.

Key Features: Analog Inputs, Solid-State & Mechanical Relays

• STM32G030F6P6 main controller
• I2C communication interface
• Onboard 4-position DIP switch for configuring the device I2C address

Analog Signal Acquisition

• 2 active analog signal detection channels
  • Supports DC 0 ~ 10V voltage-output sensors
  • Supports 0 ~ 20mA current-output sensors

Solid-State Relay Outputs

• 2 solid-state relay control channels
  • Supports switching DC 0 ~ 60V MAX 2.5A circuits

Mechanical Relay Output

• 1 mechanical relay control channel
  • Supports switching AC 250V@5A / DC 28V@5A circuits

Isolated I2C Communication

• Built-in CA-IS3020S I2C isolator
• Built-in B0505M-2WR3 isolated power module
• Onboard relay output status indicator LEDs

Industrial Protection and DIN Rail Installation

• Protection circuits on input and output channels
• DIN rail mounting / mounting-hole installation

What Is Included with StamPLC IO

• 1 x StamPLC IO
• 2 x Mounting Bracket

Industrial Automation Applications

• General-purpose analog signal acquisition
• External actuator switch control
• Remote control of relay dry contacts
• Multi-module isolated IO expansion

StamPLC IO Technical Specifications