Database? 
 More like databeast

  • With tons of nonvolatile memory, the RC‑FLEXair has enough space to handle the most challenging applications now and in the future. It automatically logs all input, output, value, calendar, loop, and schedule objects, which can each store up to 2,000 records. That’s enough for over 1 million data points! It also has space for 64 control programs, each large enough to run advanced energy sequencing, integrated fault detection and diagnostics, and more. Throw in dual high-speed Ethernet ports, and you get to access all that data and intelligence in near real-time, opening the door for advanced analytics and superior performance tracking and control.

Backward compatible, future ready

  • Reliable Controls tests every product it manufactures to ensure compatibility with previous-generation controllers. The RC‑FLEXair is no different! You can add it to Ethernet networks that host previous-generation controllers without the need to purchase costly third-party gateways or accessories. To further future-proof your investment, the RC‑FLEXair features an open-source Linux operating system renowned for its cybersecurity resilience and global community of programming support.

Ultimate flexibility

  • With many available models and options, the RC‑FLEXair is suited to a wide variety of projects. Order models with one or three universal inputs and up to six outputs with a mix of universal or solid-state relay outputs. Better still, communicate with up to eight Reliable Controls SMART‑Net™ devices and expand the controller’s capability without consuming inputs or outputs. Connect temperature, humidity, gas detection, or occupancy sensors; a SMART‑Sensor™ EnOcean Accesspoint, or even the SMART‑Net Relay with up to five heavy-duty mechanical relays.

Ideal for terminal control

  • The RC‑FLEXair features an optional precision-airflow sensor and a brushless DC damper actuator, making it ideal for many types of terminal control applications. The pressure sensor ports are highly resilient and made from die-cast aluminum; combined with the aluminum enclosure and steel baseplate, this controller is rugged and built to last.

Better by design

  • The RC‑FLEXair is equipped with a versatile USB application port that provides convenient access to a technician today and extended capabilities tomorrow. Power the controller via USB from a laptop to permit configuration, firmware updates, programming, and graphics creation. As a bonus, if no Ethernet ports are free, you can also use the USB port as an Ethernet bridge to the IP subnetwork.
  • All input, output, and communication ports are hardware-protected against transient surges and spikes, which hardens the controller against field-wiring mistakes and improves resilience.

Sustainable hardware

  • Reliable Controls rigorously engineers its products to minimize their impact on the environment and provide years of dependable, high-performance service. The RC‑FLEXair is manufactured in an ISO 9001– and 14001–certified facility and features an industry-recognized 5-year warranty. Made from highly recyclable materials, it also complies with RoHS 3, WEEE, and R2 directives to ensure easy, clean disposal at the end of its useful life.

Product features

Database? More like databeast

  • With tons of nonvolatile memory, the RC‑FLEXair has enough space to handle the most challenging applications now and in the future. It automatically logs all input, output, value, calendar, loop, and schedule objects, which can each store up to 2,000 records. That’s enough for over 1 million data points! It also has space for 64 control programs, each large enough to run advanced energy sequencing, integrated fault detection and diagnostics, and more. Throw in dual high-speed Ethernet ports, and you get to access all that data and intelligence in near real-time, opening the door for advanced analytics and superior performance tracking and control.

Backward compatible, future ready

  • Reliable Controls tests every product it manufactures to ensure compatibility with previous-generation controllers. The RC‑FLEXair is no different! You can add it to Ethernet networks that host previous-generation controllers without the need to purchase costly third-party gateways or accessories. To further future-proof your investment, the RC‑FLEXair features an open-source Linux operating system renowned for its cybersecurity resilience and global community of programming support.

Ultimate flexibility

  • With many available models and options, the RC‑FLEXair is suited to a wide variety of projects. Order models with one or three universal inputs and up to six outputs with a mix of universal or solid-state relay outputs. Better still, communicate with up to eight Reliable Controls SMART‑Net™ devices and expand the controller’s capability without consuming inputs or outputs. Connect temperature, humidity, gas detection, or occupancy sensors; a SMART‑Sensor™ EnOcean Accesspoint, or even the SMART‑Net Relay with up to five heavy-duty mechanical relays.

Ideal for terminal control

  • The RC‑FLEXair features an optional precision-airflow sensor and a brushless DC damper actuator, making it ideal for many types of terminal control applications. The pressure sensor ports are highly resilient and made from die-cast aluminum; combined with the aluminum enclosure and steel baseplate, this controller is rugged and built to last.

Better by design

  • The RC‑FLEXair is equipped with a versatile USB application port that provides convenient access to a technician today and extended capabilities tomorrow. Power the controller via USB from a laptop to permit configuration, firmware updates, programming, and graphics creation. As a bonus, if no Ethernet ports are free, you can also use the USB port as an Ethernet bridge to the IP subnetwork.
  • All input, output, and communication ports are hardware-protected against transient surges and spikes, which hardens the controller against field-wiring mistakes and improves resilience.

Sustainable hardware

  • Reliable Controls rigorously engineers its products to minimize their impact on the environment and provide years of dependable, high-performance service. The RC‑FLEXair is manufactured in an ISO 9001– and 14001–certified facility and features an industry-recognized 5-year warranty. Made from highly recyclable materials, it also complies with RoHS 3, WEEE, and R2 directives to ensure easy, clean disposal at the end of its useful life.
RoHS 3 Certified WEEE Compliant BTL Listed Device

Technical specifications

Processor and Memory

  • Triple-core 500 MHz high-performance 32-bit embedded microcontroller.
  • All nonvolatile flash memory with 10 years of data retention.
  • Easily update operating system firmware at any time over network.
  • 2 GB database memory available; maximum trend log length is 2,000 records.

Supply Voltages

  • 24 VAC ±10% 32 VA maximum, 50/60 Hz.
  • 24 VDC ±10% 12 W maximum.

Communications

  • Two IEEE 802.3 Ethernet 10/100BASE-T ports, with a maximum distance between Ethernet connections using Category 5, 5e, or 6 cabling of 100 m (328 ft). Each device uses one IP address. The second Ethernet port is a switched port; use it to line-connect additional devices.
  • Routing host controllers support up to 74 additional BACnet/IP-connected devices.
  • SMART-Net port with four-wire terminal block supports up to eight devices.
  • USB-A port with maximum cable length of 5 m (16.4 ft).

Universal Inputs

  • Standard 16-bit A/D converter; 12-bit A/D converter on ‑12 models.
  • Use software to select 0–10 VDC, 4–20 mA, or thermistor/dry-contact.
  • Impedance:
    • 3 MΩ on 0-10 VDC range.
    • 249 Ω on 4-20 mA range.
    • 20 kΩ on thermistor range.
  • Pulse counting up to 300 Hz. Supports flow meters.
  • 24 VAC overvoltage protection.

Flow Sensor (-F Models)

  • ±0-500 Pa (0"–2" WC).
  • Maximum zero point accuracy 0.2 Pa (0.0008" WC).
  • Resolution: 0.122 Pa (0.0005" WC).
  • Span accuracy 3% of reading.
  • 5.2 mm (0.2") OD die-cast aluminum fittings.
  • Suitable for 1/4" OD standard pneumatic control tubing.

Universal Outputs

  • 16-bit D/A converter.
  • Analog: 0-12 VDC.
  • Binary: Software configurable between 0–12 VDC.
  • Output power: 75 mA at 12 VDC source, -10 mA sink.
  • 24 VAC overvoltage and short protection.

Solid-State Relay Output

  • Switches 24 VAC/VDC.
  • 500 mA maximum.

FLEX Output

  • Use software to select as universal or solid-state relay.

Electric Actuator (-A Models)

  • Torque 5 Nm (45 in-lb).
  • Damper shaft minimum length 48 mm (1 7/8").
  • Rotation/stroke: Maximum 95 degrees for dampers with 90 degrees of rotation.
  • Actuator speed of 1 degree of rotation per second.
  • Impedance-protected brushless DC motor.
  • Compatible with 10–13 mm (3/8"–1/2") diameter round or square damper shafts.

Eight System Groups

  • Group related objects on one display.
  • Each System Group accommodates up to 320 objects.
  • Host custom user interfaces for integrated fault detection and diagnostics.

16 Loops

  • Standard P, PI, or PID controllers for closed loop control.

256 Values

  • Select standard and custom ranges as well as fixed or program-driven values. Some values are automatically added by firmware.

Four Calendars

  • Designate days of the year as holidays.

16 Schedules

  • Seven on/off times for each weekday or exception.

562 Single-point Trend Logs

  • The RC‑FLEXair automatically creates Single-point Trend Logs for all input, output, value, calendar, schedule, and loop objects, with a maximum of 306 logs.
  • You can also manually define another 256 logs.

16 Multipoint Trend Logs

  • Store up to eight objects in each trend log.
  • Record values by polling or change of value.
  • Dynamic; user assigned.

256 Notification Classes

  • Specify broadcast destinations.

16 Arrays

  • Up to 128 elements in a one-dimensional array.

Runtime Report

  • Total the on time and record the on/off times of every binary object.
  • Automatically generated.

Custom Units

  • Eight analog engineering units.
  • Eight binary engineering units.
  • Eight multistate units with eight states, 32 characters each.

64 Programs

  • Freely programmable control strategy in a readable, BASIC-like language.
  • 6,400 bytes per program.

Eight Tables

  • For creating custom scaling functions.

256 Net Ins

  • Maximum number of shares from other devices.

128 Net Outs

  • Maximum number of writes to other devices.

Optional Conduit Cover

  • 75 mm conduit cover for low-voltage wires.
  • Provides plenum rating to controller.
  • Encloses and protects all wires.
  • Accessible top cover for service.
  • Two 3/4" NPT knockouts.

Dimensions

  • Base model:
    15.4 cm L x 10.8 cm W x 8.6 cm H
    (6 1/16" L x 4 1/4" W x 3 3/8" H).
  • With actuator:
    16.9 cm L x 10.8 cm W x 8.6 cm H
    (6 5/8" L x 4 1/4" W x 3 3/8" H).
  • With conduit cover:
    23.7 cm L x 10.8 cm W x 8.6 cm H
    (9 15/16" L x 4 1/4" W x 3 3/8" H).

Mounting

  • Supplied with #8 self-tapping shoulder screw.

Weight

  • 0.7 kg (1.8 lb).

Wiring Terminals

  • 16–24 AWG (1.31–0.21 mm2).
  • Stranded or solid core.
  • Copper conductors only.
  • 5 mm (0.20") rising-cage screw terminal blocks.

Ambient Limits

  • Operating: -20°C to 55°C
    (-4°F to 131°F).
  • Shipping: -40°C to 60°C
    (-40°F to 140°F).
  • Humidity: 10%–90% RH noncondensing.

Enclosure

  • Recyclable 6063-T6 aluminum extrusion with steel base plate and powder-coated die-cast aluminum end caps.

Certifications

  • BTL Listed (B-BC) (pending).
  • CE.
  • CFR 47 Part 15/B Class B.
  • UL 60730-1 Open Energy Management.
  • WEEE.
  • EN 60730-1.
  • Canada ICES-003(B)/NMB-003(B).

Typical Object Configuration

The total number of objects, including outputs, and SMART-Sensor devices, you can connect to an RC-FLEXair controller is physically limited to 1,656 and also limited by onboard memory. The table below details database limits for all models


Total objects Values Loops Schedules Calendars Tables* Groups Trend Logs Runtime Reports* Arrays Programs Network
Single-point**MultipointNet InsNet Outs
1,656 256 16 16 4 8 8 562 16 2,000 4 16 256 128


* Tables and Runtime Reports are not included in the total object count.
** Automatically creates up to 306 Single-point Trend Logs for input, output, value, calendar, loop, and schedule object types in addition to user-created Single-point Trend Logs.

Diagrams


Dual Ethernet connection

VAV reheat diagram

Terminal layouts

Terminals labeled as BO# are solid-state relay outputs.

Terminals labeled as OUT# are universal outputs.

RC-FLEXair-12 models have solid-state relays internally connected to the 24 VAC/VDC terminal.

RC-FLEXair-34, -35, and -36 models have solid-state relays internally connected to an R~ terminal, which allows connection to an external 24 VAC/VDC power supply.

Dimensions

Ordering

Models

RCFA-12-F

  • RC-FLEXair with one universal input, one FLEX output, one solid-state relay output, and flow sensor.

RCFA-12-A-F

  • RC-FLEXair with one universal input, one FLEX output, one solid-state relay output, actuator, and flow sensor.

RCFA-33-A

  • RC-FLEXair with three universal inputs, three universal outputs, and actuator.

RCFA-33-A-F

  • RC-FLEXair with three universal inputs, three universal outputs, actuator, and flow sensor.

RCFA-34-A

  • RC-FLEXair with three universal inputs, one universal output, three solid-state relay outputs, and actuator.

RCFA-34-A-F

  • RC-FLEXair with three universal inputs, one universal output, three solid-state relay outputs, actuator, and flow sensor.

RCFA-35-F

  • RC-FLEXair with three universal inputs, three universal outputs, two solid-state relay outputs, and flow sensor.

RCFA-36-F

  • RC-FLEXair with three universal inputs, one universal output, five solid-state relay outputs, and flow sensor.

Options

Options

  • -CC adds factory-installed conduit cover.

Build your order

To create the order number, add your options to the base model. For example, RCFA‑12‑A‑F‑CC is the order number for an RC‑FLEXair with one universal input, one FLEX output, one solid-state relay output, actuator, flow sensor, and conduit cover.

Accessories

ACC-RCFA-CC

  • Accessory kit to retrofit your RC‑FLEXair with a conduit cover.