CP-EXPIO

What is this expansion I/O board used for?

This unit is used to expand the physical input and output capacity of compatible ComfortPoint Open plant controller systems. It adds mixed I/O points for building automation applications such as HVAC plant control, monitoring, metering pulses, actuator control and sensor integration.

How many I/O points are provided on board?

The board provides 24 integrated I/O points: 4 digital outputs, 6 digital inputs, 6 analogue outputs and 8 universal analogue inputs.

What types of digital outputs does it have?

The digital outputs are Triac outputs rated for a maximum of 24 Vac. Each output has LED indication, with a maximum continuous current of 500 mA and a minimum current of 30 mA.

What can the digital inputs be used for?

The digital inputs are potential-free contact inputs. They can also be used as pulse inputs at up to 15 Hz, making them suitable for applications such as energy meter totalisation.

What analogue output signal is available?

The six analogue outputs provide 0–10 Vdc signals and use an 8-bit digital-to-analogue converter resolution. These outputs are typically used for modulating actuators, valves, dampers and similar control devices.

What sensor types can the universal inputs accept?

The eight universal inputs can accept 0/2–10 Vdc signals, PT1000 temperature sensors from -50 to +150 °C, and NTC 20K temperature sensors from -50 to +150 °C. The analogue input resolution is 12-bit.

What power supply does the module require?

The CP-EXPIO operates from 24 Vac ±20% at 50/60 Hz. Its maximum power consumption is 15 VA, with a power LED to indicate supply status.

How is the module mounted in a control panel?

The module is designed for DIN rail mounting and wall mounting. The DIN rail specification shown for the unit is 35 mm, making it suitable for typical building management control panels.

What are the approximate dimensions?

The published dimensions are approximately 187.2 mm by 151.6 mm by 58.6 mm. These figures are useful when checking available panel space before installation.

How does it connect to the plant controller?

The module connects over an RS485 CP-IO bus. In a compatible system, multiple expansion I/O boards can be connected on the same bus, subject to the controller and bus limits.

How is the module address configured?

Addressing is set using the onboard HEX switch. The CP-EXPIO can be addressed within the supported module range for the connected ComfortPoint Open controller system.

What environmental conditions is it designed for?

The module is rated for operation from 0 to 50 °C and storage from -20 to +70 °C. It is designed for 5 to 93% relative humidity, non-condensing.

What enclosure protection rating does it have?

The module has an IP20 protection rating. This means it is intended for installation inside a suitable electrical enclosure or control cabinet rather than exposed field mounting.

What certifications are associated with this module?

The datasheet lists CE, UL 916, FCC Part 15 Subpart B Class B and UUKL Smoke Control Application certifications for the module.

What does the MTBF rating indicate?

The stated MTBF is 100,000 hours, equivalent to around 11.4 years. MTBF is a statistical reliability measure used for comparison and planning, not a fixed service duration.