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Fan inlet airflow and temperature monitor (airflow measuring station) · BACnet points list
Ruskin TDFi-FA Fan Array Inlet Monitor BACnet points list
Updated 4 November 2026
The TDFi-FA measures airflow and temperature at the inlets of fan-array (fan wall) units with thermal dispersion sensors and reports them over BACnet MS/TP. It exposes a fan summary temperature and airflow, then one temperature and one airflow Analog Value per fan for up to 16 fans, plus a Notification Class for alarms. All values are read-only.
This page lists 35 BACnet objects for the Ruskin TDFi-FA Fan Array Inlet Monitor — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Ruskin’s own free documentation, linked below.
- Manufacturer
- Ruskin
- Model
- TDFi-FA Fan Array Inlet Monitor
- Equipment
- Fan inlet airflow and temperature monitor (airflow measuring station)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 35 (0 writable)
- Transport
- BACnet MS/TP
- Firmware
- 2.0.0b01 (application 1.1.1)
- Also known as
- TDFi-FA, TDFi FA, Ruskin fan array airflow monitor
Reference only, provided as-is: verify against Ruskin’s current documentation and the live device before use. Not official Ruskin information. Terms of use.
BMS integration notes: Ruskin TDFi-FA Fan Array Inlet Monitor
A read-only measuring device: set its MS/TP address and baud in the device menu, then read the fan summary airflow and temperature, plus per-fan values if you need them. Choose the airflow units (velocity or volume, actual or standard) on the device before mapping, since the object names and units follow that setting.
Minimum points to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| AV 2 | Fan Summary ACT Airflow Volume | Total/average airflow across the monitored fans | Read |
| AV 1 | Fan Summary Temperature | Average air temperature across the fans | Read |
| AV 4 | Fan 1 Actual Airflow Volume | Fan 1 airflow (repeat for each fan) | Read |
Network setup
- BACnet MS/TP master at 9600, 19200, 38400 or 76800 baud.
- Device instance and name are set in the device settings menu.
- Fan count and display units are set on the device; they decide which AV objects exist and their names.
Watch out for
- Changing the display units renames the airflow objects and changes their units; re-map after any change.
- Out_Of_Service is true when a value is not valid, for example during sensor warm-up.
- High/low limit alarms are configured through the AV intrinsic reporting properties and the Notification Class object.
Ruskin TDFi-FA Fan Array Inlet Monitor BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
| Description | States | |||||
|---|---|---|---|---|---|---|
| NC | 1 | Notification Class | Notification class for alarm/event recipients | Read | ||
| AVmin | 1 | Fan Summary Temperature | Fan Summary Average Temperature | °F or °C (display setting) | Read | |
| AVmin | 2 | Fan Summary ACT Airflow Volume | Fan Summary airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 3 | Fan 1 Temperature | Individual Fan 1 Temperature | °F or °C (display setting) | Read | |
| AVmin | 4 | Fan 1 Actual Airflow Volume | Individual Fan 1 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 5 | Fan 2 Temperature | Individual Fan 2 Temperature | °F or °C (display setting) | Read | |
| AV | 6 | Fan 2 Actual Airflow Volume | Individual Fan 2 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 7 | Fan 3 Temperature | Individual Fan 3 Temperature | °F or °C (display setting) | Read | |
| AV | 8 | Fan 3 Actual Airflow Volume | Individual Fan 3 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 9 | Fan 4 Temperature | Individual Fan 4 Temperature | °F or °C (display setting) | Read | |
| AV | 10 | Fan 4 Actual Airflow Volume | Individual Fan 4 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 11 | Fan 5 Temperature | Individual Fan 5 Temperature | °F or °C (display setting) | Read | |
| AV | 12 | Fan 5 Actual Airflow Volume | Individual Fan 5 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 13 | Fan 6 Temperature | Individual Fan 6 Temperature | °F or °C (display setting) | Read | |
| AV | 14 | Fan 6 Actual Airflow Volume | Individual Fan 6 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 15 | Fan 7 Temperature | Individual Fan 7 Temperature | °F or °C (display setting) | Read | |
| AV | 16 | Fan 7 Actual Airflow Volume | Individual Fan 7 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 17 | Fan 8 Temperature | Individual Fan 8 Temperature | °F or °C (display setting) | Read | |
| AV | 18 | Fan 8 Actual Airflow Volume | Individual Fan 8 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 19 | Fan 9 Temperature | Individual Fan 9 Temperature | °F or °C (display setting) | Read | |
| AV | 20 | Fan 9 Actual Airflow Volume | Individual Fan 9 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 21 | Fan 10 Temperature | Individual Fan 10 Temperature | °F or °C (display setting) | Read | |
| AV | 22 | Fan 10 Actual Airflow Volume | Individual Fan 10 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 23 | Fan 11 Temperature | Individual Fan 11 Temperature | °F or °C (display setting) | Read | |
| AV | 24 | Fan 11 Actual Airflow Volume | Individual Fan 11 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 25 | Fan 12 Temperature | Individual Fan 12 Temperature | °F or °C (display setting) | Read | |
| AV | 26 | Fan 12 Actual Airflow Volume | Individual Fan 12 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 27 | Fan 13 Temperature | Individual Fan 13 Temperature | °F or °C (display setting) | Read | |
| AV | 28 | Fan 13 Actual Airflow Volume | Individual Fan 13 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 29 | Fan 14 Temperature | Individual Fan 14 Temperature | °F or °C (display setting) | Read | |
| AV | 30 | Fan 14 Actual Airflow Volume | Individual Fan 14 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 31 | Fan 15 Temperature | Individual Fan 15 Temperature | °F or °C (display setting) | Read | |
| AV | 32 | Fan 15 Actual Airflow Volume | Individual Fan 15 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read | |
| AV | 33 | Fan 16 Temperature | Individual Fan 16 Temperature | °F or °C (display setting) | Read | |
| AV | 34 | Fan 16 Actual Airflow Volume | Individual Fan 16 airflow velocity or volume | fpm, cfm or metric equivalent (display setting) | Read |
No points match these filters.
Object ID lookup: Ruskin TDFi-FA Fan Array Inlet Monitor point IDs by name
NC1Notification ClassAV1Fan Summary TemperatureAV2Fan Summary ACT Airflow VolumeAV3Fan 1 TemperatureAV4Fan 1 Actual Airflow VolumeAV5Fan 2 TemperatureAV6Fan 2 Actual Airflow VolumeAV7Fan 3 TemperatureAV8Fan 3 Actual Airflow VolumeAV9Fan 4 TemperatureAV10Fan 4 Actual Airflow VolumeAV11Fan 5 TemperatureAV12Fan 5 Actual Airflow VolumeAV13Fan 6 TemperatureAV14Fan 6 Actual Airflow VolumeAV15Fan 7 TemperatureAV16Fan 7 Actual Airflow VolumeAV17Fan 8 TemperatureAV18Fan 8 Actual Airflow VolumeAV19Fan 9 TemperatureAV20Fan 9 Actual Airflow VolumeAV21Fan 10 TemperatureAV22Fan 10 Actual Airflow VolumeAV23Fan 11 TemperatureAV24Fan 11 Actual Airflow VolumeAV25Fan 12 TemperatureAV26Fan 12 Actual Airflow VolumeAV27Fan 13 TemperatureAV28Fan 13 Actual Airflow VolumeAV29Fan 14 TemperatureAV30Fan 14 Actual Airflow VolumeAV31Fan 15 TemperatureAV32Fan 15 Actual Airflow VolumeAV33Fan 16 TemperatureAV34Fan 16 Actual Airflow Volume
Integration notes
- AV 3-34 only exist for the number of fans configured: two objects per fan (temperature, then airflow).
- Airflow object names change with the display settings: prefix Actual (ACT) or Standard (STD), suffix Velocity or Volume. The names here are the printed defaults.
- AV units follow the display settings: °C or °F for temperature; ft/min, m/s, cfm, L/s, L/min, m³/h, ft³/h or ft³/s for airflow.
- The device object name and instance are set in the device settings menu; the name can carry the display's line-2 text.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the TDFi-FA Fan Array Inlet Monitor and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the Ruskin TDFi-FA Fan Array Inlet Monitor
How many BACnet points does the Ruskin TDFi-FA Fan Array Inlet Monitor have?
This list has 35 BACnet objects: 34 analog values, 1 notification class. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Ruskin TDFi-FA Fan Array Inlet Monitor BACnet points are writable?
None of the listed objects are marked writable in the source documentation.
Where is the official Ruskin TDFi-FA Fan Array Inlet Monitor BACnet documentation?
The source is Protocol Implementation Conformance Statement (PICS) - TDFi-FA (Install TDFi-FA BACnet PICS-0124), revision 2024-01, published free by Ruskin at https://www.ruskin.com/doc/Id/10174.
What are the minimum BACnet points to integrate the Ruskin TDFi-FA Fan Array Inlet Monitor?
Start with AV 2 Fan Summary ACT Airflow Volume (Total/average airflow across the monitored fans); AV 1 Fan Summary Temperature (Average air temperature across the fans); AV 4 Fan 1 Actual Airflow Volume (Fan 1 airflow (repeat for each fan)).
How do I check these points on the real TDFi-FA Fan Array Inlet Monitor?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
More Ruskin BACnet points lists
- Airflow measuring and control damper actuator
Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)
Ruskin Airflow-IQ AiQ-TD-xxC measure-and-control dampers: TDP05K thermal dispersion probe feeding a VAFB24-BAC or VAMB24-BAC air measurement actuator.
Also known as: Airflow-IQ, AiQ-TD-50, AiQ-TD-60, AiQ-TD-50C, AiQ-TD-60C, VAFB24-BAC, VAMB24-BAC, VA*B24-BAC, RAMS - Fan inlet airflow and temperature monitor (airflow measuring station)
Ruskin TDFi-Rt Electronic Fan Inlet Monitor
Ruskin TDFi-Rt thermal dispersion airflow and temperature stations mounted in fan inlets, up to 16 fans.
Also known as: TDFi-Rt, TDFi-RT, TDFi Rt, Ruskin fan inlet airflow monitor
Source: Protocol Implementation Conformance Statement (PICS) - TDFi-FA · Install TDFi-FA BACnet PICS-0124 · rev. 2024-01. Object names, instances and units are reproduced as published; descriptions are our own.