Description

Description

The CP-IO19R is an I/O expansion board designed for the ComfilePi platform. It provides 11 digital inputs and relay-based outputs with screw terminals, enabling easy and reliable wiring in industrial control panels. Built-in indicator LEDs allow users to quickly check I/O status during operation and maintenance.

Note: This product cannot be mounted on the Cpi-C070WR-4C.

Inputs

Voltage range: 12 ~ 24 VDC
Absolute min/max voltage range: 3.3 ~ 28 VDC
Response time: 5 ms
Input OFF level: < 1.8 VDC
Input ON level: > 2.5 VDC
Indicator LED OFF level: < 4.5 V
Indicator LED ON level: > 5.0 V

Outputs

Relay outputs × 8
Relay driving voltage: 24 V (single power source)
Relay driving current: 10 mA
Maximum switching voltage: 250 VAC / 30 VDC
Maximum switching current: 5 A (AC), 3 A (DC)
Maximum switching frequency: 10 Hz

Package Includes

CP-IO19R I/O board
40-pin ribbon cable × 1
Mounting screws × 4

FAQ

Q: How is this different from using the GPIO pins on a standard Raspberry Pi?

A: Standard Raspberry Pi GPIO pins operate at 3.3V logic levels. That’s fine for basic digital I/O, but it stops at the logic-signal stage. In industrial environments, I/O typically works very differently. Most systems use 24V signals or dry-contact interfaces such as relays. This is necessary to interface with real-world devices—sensors, actuators, solenoid valves, motors, and other industrial equipment.

This product bridges that gap. It allows those real-world industrial devices to be safely and reliably connected to ComfilePi, translating industrial-level signals into a form the system can use. In short, it’s the difference between hobby-level GPIO and true industrial I/O designed for the real world.