OptiFlex™ I/O Expander

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

OptiFlex™ I/O Expander

Compact I/O expansion for enhanced OptiFlex™ controller capability
The OptiFlex™ I/O Expander OFX48 extends the input and output capacity of OptiFlex™ controllers, providing a flexible and space‑efficient solution for expanding control functionality while maintaining seamless integration with the WebCTRL® building automation system.

OptiFlex™ I/O Expander

The OptiFlex equipment expander delivers input and output capacity to the powerful OptiFlex Advanced Equipment Controller, OF683XT-E2.

Designed for flexible panel configurations, the OptiFlex equipment expander is DIN rail or screwtab mountable. It can be mounted directly to the OF683XT-E2 controller or remotely mounted up to 1,000’ away.

OptiFlex™ I/O Expander

Expanded I/O Capacity

Adds up to 4 outputs and 8 inputs, providing 12 additional control points when connected to an OF683XT‑E2 controller.

Flexible Mounting Options

Expanders can be mounted directly to the OF683XT‑E2 in a compact configuration or remotely mounted up to 1,000 feet away, allowing flexible system design.

Manual Control Capability

Includes Hand‑Auto‑Off (HOA) switches on all output channels for local override and troubleshooting.

DIN Rail or Screw‑Tab Mounting

Supports DIN rail or screw‑tab mounting, enabling installation in control panels or equipment enclosures.

I/O Expansion

The OFX48 provides 12 total expansion points, consisting of 8 inputs and 4 outputs, extending the capabilities of the connected OptiFlex™ controller.

Mounting Distance

The expander can be mounted locally or remotely, with remote installation supported up to 1,000 feet from the host controller.

Output Control

All output channels include Hand‑Auto‑Off switches, enabling manual override for service and commissioning.

System Integration

The expander integrates directly with the WebCTRL® building automation system, supporting system‑wide energy management functions such as demand limiting and optimal start.

Document Name Description Document Type Language Action
Spec Sheet OptiFlex™ I/O Expander – OFX48 Spec Sheet PDF English Download
Modbus Protocol OptiFlex™ I/O Expander – OFX48 modbus protocol PDF English Download
What is the purpose of the OFX48?

The OFX48 is used to expand the input and output capacity of compatible OptiFlex™ controllers.

Can the expander be installed away from the main controller?

Yes. It can be remotely mounted up to 1,000 feet from the host controller.

Does the OFX48 support manual override?

Yes. All output channels include Hand‑Auto‑Off switches for local control and servicing.

Which controller is the OFX48 compatible with?

It is designed for use with the OptiFlex™ OF683XT‑E2 controller.

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