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Airflow measuring and control damper actuator · BACnet points list
Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) BACnet points list
Updated 4 November 2026
The Airflow-IQ AiQ-TD-xxC pairs a Ruskin TDP05K thermal dispersion airflow probe with a VA*B24-BAC 'RAMS' air measurement actuator that holds an airflow setpoint. The actuator talks BACnet IP on its RJ-45 port or BACnet MS/TP (or Modbus RTU) on the junction-box terminals. The BMS sends an airflow command as a 0-100% setpoint and reads airflow, velocity, damper position and the differential pressure reading.
This page lists 16 BACnet objects for the Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) — 8 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
- Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)
- Equipment
- Airflow measuring and control damper actuator
- Equipment type
- Valves & actuators
- BACnet objects
- 16 (8 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- Not stated
- 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
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 Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)
Switch the actuator's communications from Modbus to BACnet in its web setup page, set the damper area, maximum control airflow and sensor type to match the TDP05K probe, then command airflow through BACnetSetpoint (AO 1) and read back airflow and damper position.
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 |
|---|---|---|---|
| AO 1 | BACnetSetpoint | Airflow setpoint command, 0-100% | Command |
| AI 3 | Airflow | Measured airflow, cfm | Read |
| AI 2 | AirflowSetpoint | Airflow setpoint in use, cfm | Read |
| AI 5 | DamperPosition | Damper position feedback, % | Read |
| BI 1 | EnableStatus | Safety enable status: off = alarm | Read |
Enable & remote start
A BACnet setpoint overrides the analog setpoint on the actuator's Sensor Input 2; the factory jumper at junction-box terminals 2 and 12 must stay in place for BACnet control. A setpoint signal below the 2 VDC minimum disables the actuator and closes the damper.
Network setup
- The probe and actuator ship with Modbus RTU selected; set BACnet address, baud and device name in the actuator's BACnet/Modbus settings.
- Configuration is done through the actuator's RJ-45 web page; the laptop may need a fixed IP in the actuator's subnet.
- Set Damper Area and Maximum Control Airflow to match the TDP05K design range; the guide's example is 4.00 ft² and 8,800 cfm.
- Use Set Zero Signal (BV 1) at zero flow to zero the sensor input.
Watch out for
- The actuator's Max Control Airflow must match the TDP05K probe's design range or the airflow readings will be scaled wrong.
- BACnet IP is on the RJ-45 port; BACnet MS/TP and Modbus share junction-box terminals 6 and 7.
Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) 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 | |||||
|---|---|---|---|---|---|---|
| AI | 1 | RuskinAMS | Application version | Read | ||
| AImin | 2 | AirflowSetpoint | Current airflow rate setpoint | cfm | Read | |
| AImin | 3 | Airflow | Current airflow rate | cfm | Read | |
| AI | 4 | AirVelocity | Current air velocity | fpm | Read | |
| AImin | 5 | DamperPosition | Damper position feedback | % | Read | |
| AI | 6 | DpReading | Differential pressure sensor value | in. w.c. | Read | |
| AV | 1 | DamperArea | Damper area (default 4) | ft² | Write | |
| AV | 2 | MaxControlAirflow | Maximum controllable airflow rate (default 5,000) | cfm | Write | |
| AV | 3 | Ka | Damper Ka factor (default 2,482) | Write | ||
| AV | 4 | Factor1/m | Damper 1/m factor (default 0.5224) | Write | ||
| AOmin | 1 | BACnetSetpoint | BACnet control setpoint, 0-100% (default 0) | % | Command | |
| BImin | 1 | EnableStatus | Damper enabled status (safety) | Read | off=Alarm; on=Normal | |
| MI | 1 | DpSensorIndex | Pressure sensor range | Read | 1=0.10 in. w.c.; 2=0.25 in. w.c.; 3=0.50 in. w.c.; 4=1.00 in. w.c.; 5=2.50 in. w.c.; 6=N/A (ES sensor) | |
| MV | 1 | DamperMode | Damper mode (flow or position control) | Write | 1=Flow; 2=Position | |
| MV | 2 | SensorType | Pressure/flow sensor type (default 1) | Write | 1=RUS-274 or RUS-275; 2=AMS-8100 or AMS-8100LR; 3=DPT-IQ; 4=EA-Series | |
| BV | 1 | SetZeroSignal | Zero the sensor input signal at no flow | Write | 0=Normal; 1=Activate |
No points match these filters.
Object ID lookup: Ruskin Airflow-IQ AiQ-TD RAMS actuator point IDs by name
Integration notes
- Digital communications on the probe and actuator ship set to Modbus RTU; BACnet must be selected during setup.
- The guide prints 'percent' as the unit of BI 1 (EnableStatus); it is a binary status, so no unit is shown here.
- The Modbus map in the same guide numbers the multistate values from 0; the BACnet objects start at 1.
- AV 1-4 and MV 1-2 are commissioning settings that must match the TDP05K probe configuration.
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 Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) 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 Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)
How many BACnet points does the Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) have?
This list has 16 BACnet objects: 6 analog inputs, 1 analog output, 4 analog values, 1 binary input, 1 binary value, 1 multi-state input, 2 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) BACnet points are writable?
8 of the 16 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.
Where is the official Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator) BACnet documentation?
The source is Airflow-IQ Series Thermal Dispersion Technology Installation, Operation, and Maintenance Manual (Table 3: BACnet Objects) (II-Airflow-IQ Series-1019/New), revision 2024-05, published free by Ruskin at https://www.ruskin.com/doc/Id/10199.
What are the minimum BACnet points to integrate the Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)?
Start with AO 1 BACnetSetpoint (Airflow setpoint command, 0-100%); AI 3 Airflow (Measured airflow, cfm); AI 2 AirflowSetpoint (Airflow setpoint in use, cfm); AI 5 DamperPosition (Damper position feedback, %); BI 1 EnableStatus (Safety enable status: off = alarm).
How do I enable BMS control of the Ruskin Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)?
A BACnet setpoint overrides the analog setpoint on the actuator's Sensor Input 2; the factory jumper at junction-box terminals 2 and 12 must stay in place for BACnet control. A setpoint signal below the 2 VDC minimum disables the actuator and closes the damper.
How do I check these points on the real Airflow-IQ AiQ-TD (VA*B24-BAC RAMS air measurement actuator)?
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.
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Source: Airflow-IQ Series Thermal Dispersion Technology Installation, Operation, and Maintenance Manual (Table 3: BACnet Objects) · II-Airflow-IQ Series-1019/New · rev. 2024-05. Object names, instances and units are reproduced as published; descriptions are our own.