StamPLC IO

SKU:A176

Description

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.

Features

STM32G030F6P6 main controller
I2C communication interface
Onboard 4-position DIP switch for configuring the device I2C address
2 active analog signal detection channels
- Supports DC 0 ~ 10V voltage-output sensors
- Supports 0 ~ 20mA current-output sensors
2 solid-state relay control channels
- Supports switching DC 0 ~ 60V MAX 2.5A circuits
1 mechanical relay control channel
- Supports switching AC 250V@5A / DC 28V@5A circuits
Built-in CA-IS3020S I2C isolator
Built-in B0505M-2WR3 isolated power module
Onboard relay output status indicator LEDs
Protection circuits on input and output channels
DIN rail mounting / mounting-hole installation

Includes

1 x StamPLC IO
2 x Mounting Bracket

Applications

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

Specifications

Specification	Parameter
MCU	STM32G030F6P6
Communication	I2C @ 0x20
I2C Isolator	CA-IS3020S
Isolated Power Module	B0505M-2WR3
Power Conversion	TPAP7343D-33FS4
Voltage / Current Monitor	INA226AIDGSR
Detection Channels	2 analog signal detection channels (compatible with 0 ~ 20mA and 0 ~ 10V analog acquisition)
MOS Switch Output	2 solid-state relay outputs, MOS1 / MOS2, common terminal COM, supporting DC 0 ~ 60V MAX 2.5A switching
Relay Output	1 SRD-5VDC-SL-C mechanical relay, N.C / COM / N.O terminals, supporting AC 250V@5A / DC 28V@5A switching
Address Configuration	4-position DIP switch, configurable I2C address range: 0x20 ~ 0x2F
Control Interface Type	2 x 3P switch output / relay terminals, 1 x 6P input terminal
Installation	DIN rail mounting / mounting hole
Product Size	51.4 x 80.0 x 27.1mm
Product Weight	62.1g
Package Size	84.0 x 56.0 x 29.0mm
Gross Weight	69.2g

Learn

Voltage Sensor Wiring

To measure voltage, connect an active device under test to the IN+ and ISO GND terminals of an input detection channel, as shown below:

Current Sensor Wiring

To measure current, connect an active device under test to the IN+ and IN- terminals of an input detection channel, as shown below:

Relay Switch Wiring

The mechanical relay output provides N.C / COM / N.O terminals, while the solid-state relay output provides MOS1 / MOS2 / COM terminals. The wiring is shown below:

Safety Warning

When connecting 220V AC to the mechanical relay terminals, always follow safe operating procedures to avoid the risk of electric shock.