Description
Product Overview
Analog output modules are essential when a building automation controller must regulate equipment rather than simply switch it on or off. The Honeywell XFR822A is an eight-channel analog output module for the Excel 800 Panel Bus system. It provides modulating control signals for compatible actuators and other control devices, allowing the controller to adjust operating levels in response to temperature, pressure, airflow, and other process requirements. Its eight local manual override potentiometers make it useful for commissioning and service work where technicians need to test output behavior without relying solely on automatic control logic.
Each output supports a nominal 0–11 VDC signal with a maximum output current of ±1 mA. The module has 8-bit output resolution and can be configured for analog control, binary output using 0 V or 10 V, or floating-actuator operation when used with the appropriate external interface. Each channel has a red status LED whose brightness follows the output level. When a channel is manually overridden, the LED flashes, and the module reports the override mode and value to the controller. This feedback helps technicians distinguish a manually selected output from one controlled by the application.
The XFR822A also supports configurable output behavior when communication with the controller is interrupted. Depending on the application setup, an output can remain at its current value or move to a defined safety position of 0%, 50%, or 100%. The required position should be selected according to the controlled equipment and its safe operating requirements. The module is installed on an XS821-22 push-in terminal socket or an XSU821-22 screw-terminal socket. These accessories and the Panel Bus architecture must be checked when planning a replacement.
For maintenance, verify the exact model code, terminal socket, supply arrangement, and channel configuration before installation. Check the connected device’s input impedance and signal requirements against the module’s ±1 mA output capability. After replacement, test all eight channels in automatic mode, confirm manual override operation, and verify the configured response to communication failure.
Product Introduction
Unstable modulating control can affect valve positioning, damper movement, and temperature regulation even when the controller remains online. The Honeywell XFR822A provides eight analog outputs, each with a manual override potentiometer and output-level indication for Excel 800 Panel Bus applications.
Its 0–11 VDC output range and configurable safety positions support different control strategies. Before commissioning, verify the terminal socket, output mode, connected load, and intended communication-failure response.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | XFR822A |
| Manufacturer | Honeywell |
| System Platform | Excel 800 / Excel 5000 |
| Bus Type | Panel Bus |
| Product Type | Analog output module with manual overrides |
| Number of Outputs | 8 |
| Analog Output Range | 0–11 VDC |
| Maximum Output Current | ±1 mA |
| Output Resolution | 8-bit |
| Alternative Output Modes | Binary 0/10 VDC; floating-actuator control with suitable interface |
| Manual Override | Individual potentiometer per output |
| Manual Adjustment | Auto / 0–100% |
| Output Status Indication | Red LED; brightness follows output level |
| Override Feedback | Mode and value feedback to controller |
| Communication-Failure Behavior | Remain, 0%, 50%, or 100%, configurable |
| Supply | 24 VAC or 24 VDC, subject to the applicable version |
| Typical Power Consumption | Approximately 160 mA at 24 VAC; 90 mA at 24 VDC, per Excel 800 module data |
| Terminal Socket | XS821-22 or XSU821-22 |
| Installation | Pluggable module with separate terminal socket |
| Operating Temperature | 0°C to +50°C, per product references |
| Protection Rating | Verify the complete installed assembly and enclosure requirements |
| Lifecycle Status | Verify current manufacturer status |
| Condition | Confirm for the individual unit |
XFR822A
Related Products
These Honeywell Excel 800 modules provide related analog, binary, or relay functions. They are not automatically interchangeable with the XFR822A.
- XF822A — Eight-channel Panel Bus analog output module without manual override potentiometers. Consider it only when local manual override is not required.
- XFLR822A — Eight-channel LONWORKS analog output module with manual overrides. Its bus interface differs from the Panel Bus XFR822A.
- XFL822A — Eight-channel LONWORKS analog output module without manual overrides.
- XF821A — Eight-channel Panel Bus analog input module for collecting analog sensor signals.
- XFR824A — Six-channel relay output module with manual overrides for discrete switching applications.
- XF824A — Six-channel relay output module without manual overrides.
- XFR825A — Three-channel floating output module with manual overrides for compatible floating-actuator applications.
- XCL8010A — Excel 800 controller module that manages the Panel Bus I/O system.
- XS821-22 — Push-in terminal socket for compatible analog input/output modules.
- XSU821-22 — Screw-terminal socket for compatible analog input/output modules.
Frequently Asked Questions
What is the Honeywell used for?
It provides eight analog control outputs for the Honeywell Excel 800 Panel Bus system. Typical applications include modulating compatible valves, dampers, and other devices that accept the configured analog signal.
Can I hot-swap the ?
The Excel 800 architecture uses a removable electronic module and a separate terminal socket, but safe replacement depends on the installation and maintenance procedure. Do not assume connected field circuits can be handled live. Follow the applicable Honeywell instructions and isolate hazardous supplies as required.
Does the support 0–10 VDC control?
Yes. Its documented analog output range is 0–11 VDC, and it can also be configured for binary 0/10 VDC output. Confirm the selected channel mode and the connected device’s signal requirements before commissioning.
Can the replace an XF822A?
Both modules provide eight Panel Bus analog outputs, but the adds local manual override potentiometers and feedback. If the application or maintenance procedure requires manual override, the XF822A does not provide the same functionality. Confirm the exact application requirements before substitution.
What happens if Panel Bus communication fails?
The module supports configurable output safety behavior. An output may remain at its current value or move to 0%, 50%, or 100%, according to the configured application. Verify the actual settings and confirm that they are suitable for the controlled equipment.
How can I verify the condition of a replacement?
Inspect the model label, override potentiometers, LEDs, connector pins, and terminal socket. Request photographs of the actual unit and available functional test results. Confirm whether it is new, used, or refurbished; visual inspection alone does not prove that all eight output channels work correctly.
What should I check before ordering?
Confirm the exact designation, Excel 800 Panel Bus compatibility, socket type, supply arrangement, output mode, and the input requirements of the connected actuators. Also verify warranty terms, unit condition, and test evidence. Record manual override settings and communication-failure behavior before replacing the module.
