XFL821A Honeywell LONWORKS Bus Analog Input Module

Product Description

The Honeywell XFL821A, also identified as the XFL821A LONWORKS Bus Analog Input Module, acquires eight analog input signals for the Honeywell Excel Web building automation system. The module communicates over the LONWORKS bus and uses a compatible terminal socket for field wiring. The related XF821A is a Panel Bus analog input module specified for XL800 controllers; it is a separate variant and should not be treated as electrically interchangeable with the XFL821A.

Hardware Specifications

LONWORKS Communication and Analog Signal Acquisition

The XFL821A receives analog input signals through its eight input channels and communicates with the host system over the LONWORKS bus. The pluggable design separates the electronic module from the terminal socket, allowing field wiring to remain connected to the socket when the electronic module is removed.

The specified terminal socket options are XS821-22 and XSU821-22. The supplied documentation does not establish the complete supported sensor list, individual channel ranges, measurement accuracy, electrical isolation ratings, or hot-swap conditions. Confirm these parameters against the applicable Honeywell installation manual before connecting field devices.

The XF821A uses the Panel Bus and is identified for XL800 controllers. Do not apply XF821A-specific electrical or communication specifications to the XFL821A without supporting documentation.

Frequently Asked Questions

Q: How many analog input channels does the XFL821A provide?

A: The XFL821A provides eight analog input channels. The supported signal types and measurement ranges require confirmation from the module's technical documentation.

Q: Which terminal socket is compatible with the XFL821A?

A: The supplied documentation identifies the XS821-22 and XSU821-22 terminal sockets. It also specifies one connector bridge and one swivel label with the socket installation.

Q: Can the XFL821A be replaced while the system is powered?

A: The module has a pluggable design, but the supplied information does not confirm powered hot-swapping conditions. Follow Honeywell's prescribed isolation and replacement procedure before removing or installing the module.

Field Installation Guidelines

1. Verify the XFL821A model marking and confirm compatibility with the intended Excel Web LONWORKS bus system.
2. Install the specified XS821-22 or XSU821-22 terminal socket according to the manufacturer's mounting instructions.
3. Connect field wiring to the designated terminals using the official wiring diagram. Confirm each input's signal type and electrical limits before energizing the circuit.
4. Route analog signal wiring separately from power and high-noise switching conductors where practical. Apply shield termination according to the system grounding instructions.
5. Verify LONWORKS bus wiring, polarity where applicable, network topology, and device commissioning requirements against the installation manual.
6. Before replacing the pluggable module, follow the manufacturer's power isolation and removal procedure. Do not assume that live removal is permitted.
7. Inspect the terminal connections and confirm input readings and bus communication during commissioning.

Other Attributes

• Series: Honeywell Experion PKS(C200,C300)
• Country of Origin:  USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of Honeywell

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