OptiFlex™ I/O Expander

BMS & Control Automated Logic BUILDING CONTROLLERS
OptiFlex™ I/O Expander
FACILITY CONTROL

OptiFlex™ I/O Expander

Flexible I/O expansion for OptiFlex™ BACnet building controllers
The OptiFlex™ I/O Expander FIO48u extends the input and output capacity of OptiFlex™ BACnet Building Controllers, providing a compact and scalable solution for expanding control capabilities within the WebCTRL® building automation system.

OptiFlex™ I/O Expander

OptiFlex I/O expanders deliver input and output capacity to the powerful OptiFlex BACnet Building Controllers. Up to nine OptiFlex I/O expanders can be added to an OptiFlex BACnet Building controller.

OptiFlex I/O expanders are designed for flexible panel configurations. They are DIN rail or screwtab mountable and can be mixed and matched to meet the I/O requirements of the equipment being controlled. The expanders can be mounted directly to the OFBBC controller or remotely mounted up to 500’ away.

OptiFlex™ I/O Expander

I/O Expansion Capability

Provides additional input and output capacity to support expanded control requirements when used with compatible OptiFlex™ BACnet Building Controllers.

Local Service & Updates

Includes a USB port for local device updates, simplifying maintenance and servicing.

Flexible Mounting Options

Supports DIN rail or screw mounting, allowing installation in control panels, equipment enclosures, or other approved locations.

Seamless WebCTRL® Integration

Integrates directly with the WebCTRL® building automation system, maintaining consistent system operation and management.

Controller Compatibility

The FIO48u is compatible with the following OptiFlex™ BACnet Building Controller models:

OF1628
OFBBC
OF1628‑NR
OFBBC‑NR
OF028‑NR

Connectivity & Expansion

The expander connects directly to the host OptiFlex™ controller to extend system I/O capacity without requiring additional standalone controllers.

Service Interface

A USB port is provided for local firmware updates and service access.

Mounting & Installation

Supports DIN rail or screw mounting, enabling flexible installation in mechanical rooms, control panels, or equipment boxes.

Document Name Description Document Type Language Action
Spec Sheet OptiFlex™ I/O Expander (FIO48u) Spec Sheet PDF English Download
Modbus Protocol OptiFlex™ I/O Expander (FIO48u) Modbus Protocol PDF English Download
What is the purpose of the FIO48u?

The FIO48u is used to expand the input and output capacity of compatible OptiFlex™ BACnet Building Controllers.

Does the FIO48u operate independently?

No. The FIO48u functions as an expansion module and operates in conjunction with a compatible OptiFlex™ BACnet Building Controller.

How are firmware updates performed?

Firmware updates can be performed locally using the USB service port.

Is the FIO48u suitable for retrofit projects?

Yes. Its compact design and flexible mounting options make it suitable for both new installations and retrofit expansions.

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