MACH-ProAir™
BACnet® Controller

Engineered to exceed the specifications for a wide variety of Variable Air Volume (VAV) applications, the Reliable Controls® MACH-ProAir is a fully programmable BACnet Building Controller (B-BC) with numerous downloadable standard codes and flexible I/O options, all priced to meet a modest budget.

Purchase Products

Features

Dynamic Database

  • Allows a maximum of 160 objects to be created of any supported type in any model of controller.


Protocol

  • BACnet® - MS/TP (EIA-485)


Motor Control

  • Standard VAV and optimized motor control algorithms stored in firmware.
  • Numerous standard application codes can be downloaded from the Reliable Controls® website.
  • Optional user-programmed algorithm.


Engineered Enhancements

  • Onboard End Of Line (EOL) switch with LED indication provides easy EOL configuration and visual verification.
  • Remote addressing and software selectable inputs allow detailed configuration to be completed over the network.
  • Robust MRAM non-volatile memory preserves trend data on power cycle.
  • BACnet COV support provides optimized network sharing.


Programs

  • 16,000 bytes of programmable control strategy in a readable, BASIC-like language.
  • 3,200 bytes per program.

Inputs

  • Universal ranges.
  • Soft-selectable 0-10 VDC, 4-20 mA, thermistor / dry contact.


Outputs

  • Universal ranges
  • 0-12 VDC or TRIAC, model dependent


Values

  • Selectable standard and custom ranges, as well as fixed or program-driven values.


Loops

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


Single-Point Trend Logs

  • Stores 128 samples at programmable time intervals.


Multipoint Trend Logs

  • Each Trend Log stores 128 samples of 8 points at programmable time intervals.


Runtime Report

  • Records the total ON time and the total number of transitions, as well as daily transitions for every binary point.
  • A 50 sample runtime log is automatically enabled for each binary point.


System Groups

  • Allows related points to be grouped onto one display.
  • 80 points/group.

Schedules

  • 7 On/Off times for each weekday or exception.


Calendars

  • Days of the year designated as holidays.


Arrays

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


Tables

  • For creating custom input ranges and programs lookup tables.


Custom Units

  • 8 analog engineering units.
  • 8 binary engineering units.
  • 8 multistate units with 8 states, 32-characters each.


SMART-Net Port

  • Networks up to 4 SMART devices.


64 Net Ins

  • The total maximum number of shares from other devices.


32 Net Outs

  • The total maximum number of writes to other devices.


Warranty

  • 5 years


Certification

Typical Object Configuration

There are physical limitations to the number of inputs, outputs, and SMART-Sensors that can be connected to a MACH-ProAir. For other object types, there are no imposed limits for the maximum number of objects of a single type. The main constraint for created objects is onboard memory, however, the total number of objects that can be created (including inputs, outputs, and SMART-Sensors) is limited to 128. The table below details a typical database that fits in the memory module for any model.

Variables Loops Schedules Calendars Tables* Groups Multipoint
Trend**		 Runtime* Arrays Program SMART-Sensor***
48 4 2 1 2 2 2 32 2 8 4


* Tables and Runtime Logs are not counted in the 128 object limit. Inputs, outputs, and the device object are counted in the 128 object limit.
** Trends are configured to store 128 samples.
*** All models accommodate a maximum of 4 SMART-Sensors.

RoHS 2 Certified BTL Listed Device

Tech Specs

Processor

  • 66 MHz, high-performance, 32-bit embedded microcontroller with onboard Flash memory
  • Controller database stored in robust non-volatile memory. Values and log data are stored in 3-day, batterybacked memory.
  • Operating System firmware easily updated at any time over the network


Supply Voltages

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


Communications

  • 1 EIA-485 (RS-485)@ 76.8 kbps max. with auto-baud detection.
  • 2 SMART-Net ports (one RJ-11 and one 4-wire terminal block) supporting a maximum of 4 devices.


Universal Inputs

  • 12-bit A/D converter
  • Soft selectable: 0-10 VDC, 4-20 mA,
    thermistor/dry contact
  • Impedance:
    3M Ω on 0-10 VDC range
    250 Ω on 4-20 mA range
    20k Ω on thermistor range
  • Pulse counting up to 40 Hz
    (supports flow meters)
  • 24 VAC over-voltage protection


Velocity Sensor

  • ±0-500 Pa (0-2" WC)
  • Maximum zero point accuracy 0.1 Pa (0.0008" WC)
  • Resolution: 0.122 Pa (0.0005" WC)
  • Span accuracy 3% of reading


Flow Pickup

  • 5.2mm OD barbed fittings.
  • Suitable for ¼" standard pneumatic control tubing.


Universal Outputs

  • 12-bit D/A converter.
  • Analog: 0–12 VDC.
  • Binary: 0/12 VDC.
  • Output power: 75 mA @ 12 VDC.
  • 24 VAC over-voltage and short protection.
  • Jumper selectable solid state relay.


Solid State Relay Outputs

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


Actuator

  • Torque 45 in-lb (5 Nm).
  • Brushless D.C.


SETUP-Tool™

  • SETUP-Tool for optional local configuration.


Dimensions

  • With actuator:
    22.7 cm L x 10.1 cm W x 7.7 cm H
    (8 15/16" L x 3 15/16" W x 3" H).
  • Without actuator:
    19.9 cm L x 10.1 cm W x 7.3 cm H
    (7 13/16" L x 3 15/16" W x 2 7/8" H).
  • With MPA-C:
    22.7 cm L x 15.0 cm W x 7.7 cm H
    (8 15/16" L x 5 7/8" W x 3" H).


Mounting

  • Supplied with #8 screw.
  • Compatible with 3/8" to 1/2" damper blade shaft.


Weight

  • 0.7 kg (1.8 lb.).


Ambient Limits

  • Operating: 0 ºC to 50 ºC (32 ºF to 122 ºF).
  • Shipping: -40 ºC to 60 ºC (-40 ºF to 140 ºF).
  • Humidity: 10% to 90% RH non-condensing.


Enclosure

  • ABS.
  • UL94-5V.

 

 

Application Diagram