MACH-Stat-ND
BACnet® Controller

The Reliable Controls® MACH-Stat-ND is a unique, fully programmable BACnet® Advanced Application Controller (B-AAC) ideal for applications that require any combination of space temperature, humidity, Carbon Dioxide, occupancy sensing, local override, and setpoint adjust, in one convenient package.

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Features

Protocol

  • BACnet®
    - MS/TP (EIA-485)
  • Reliable Controls Protocol
    - Network (EIA-485/Token Bus)


4 Control-BASIC Programs

  • User programmable control strategy in a readable, BASIC-like language
  • 2000 bytes per program


9 Inputs (max.)

  • Inputs 1–4 universal ranges are jumper selectable: 0–5 VDC, 4–20 mA, thermistor, and dry contact
  • Input 5 is 10k thermistor - linked to override button
  • Input 6 optional 20k setpoint slider or 10k/dry contact
  • Input 7 optional humidity sensor
  • Input 8 optional occupancy sensor
  • Input 9 optional CO2 sensor


8 Outputs

  • Sockets 1–6 accept any mix of OMs (relay, TRIAC, or universal)
  • Outputs 7–8 are TRIAC and require no OMs
  • Universal ranges are scalable between 0–12 VDC
  • Single stage relays are jumper selectable NO/NC

48 Variables

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


4 PID Loops

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


3 Trend Logs

  • Each Trend Log stores 150 samples of 6 points at programmable time intervals


8 Runtime Logs

  • Totals the On time and records the On/Off times of a digital point
  • Holds 100 samples


2 System Groups

  • Allows related points to be grouped on one display
  • 50 points per group


1 Weekly Schedule

  • 4 On/Off times for each weekday and 2 override days


1 Annual Schedule

  • Days of the year designated as holidays

5 Custom Tables

  • For creating custom input ranges and Control-BASIC lookup tables


16 Custom Units

  • 8 analog engineering units
  • 8 digital engineering units


SMART-Net Port

  • Networks up to 4 SMART-Sensors


48 Network In Points

32 Network Out Points

Warranty

  • 5 years
  • 1 year for humidity sensor
  • 2 years for CO2 sensor


Certification

BTL Listed Device

Tech Specs

Processor

  • 25 mHz, high performance, 16-bit embedded microcontroller


Memory

  • 64k RAM, for logs and scratch
  • 512k Flash EEPROM for firmware configurations and database
  • Minimum 10-year retention


Real Time Clock (optional)

  • ±1 second per day


Supply Voltages

  • 24 VAC ±10% 25 VA max.
  • 24 VDC, ±10% 8 W max.


Communications

  • EIA-485 @ 76.8 kbps max.
  • SMART-Net (4 SMART-Sensors max.)


Temperature Sensor

  • Thermistor is pre-mounted on Input 5 (can be remote mounted)
  • Range: 0 ºC to 40 ºC (32 ºF to 104 ºF)
  • ±0.1 ºC (0.18 ºF) resolution
  • User calibrated to ±0.1 ºC (0.18 ºF) accuracy


Configuration

  • SETUP-Tool or X-Port required for MSet configuration


Mounting

  • Unit mounts directly to single or dual device box

 

Outputs

  • Ships with 6 unpopulated output sockets
  • Output Modules (OMs) sold separately
  • Sockets 1-6 include an 8-bit D/A converter and can be configured as analog outputs
  • Sockets 1-6 accept any mix of OMs (relay, TRIAC, or universal)
  • Outputs 7-8 are TRIAC and require no OMs
  • Universal OMs provide 0-12 VDC (analog or digital), 75 mA max. with 24 VAC over-voltage and short circuit protection
  • Relay OMs provide a dry contact for switching DC or AC loads up to 24 V, 0-500 mA, NC or NO
  • TRIAC OMs switch 24 VAC only with current load between 20-500 mA

Inputs (9 max.)

  • 4 universal inputs:
    • 10-bit A/D converter
    • Analog: 0-5 VDC, 4-20 mA, thermistor
    • Digital: dry contact
    • Impedance:
      15k Ω on 0-5 VDC range,
      250 Ω on 4-20 mA range,
      10k Ω on thermistor range
    • 100 Hz pulse counting (supports flow meters)
    • 24 VAC over-voltage protection
  • 2 thermistor/dry contact inputs
  • Override button linked to Input 5
  • Humidity input:
    • 0.1% resolution
    • 10-90% range
    • ± 1.8% RH accuracy
  • Occupancy input:
    • Passive Infrared Radiation (PIR) sensor
    • 64 detection zones
    • 100º horizontal / 82º vertical
    • 5 m (16.4 ft.) max. detection distance
  • CO2 input:
    • 0-2000 ppm
    • ± 30 ppm accuracy
    • Auto calibrating
    • Repeatability ± 20 ppm ± 1 of measured value
    • Linearity = ± 30 ppm
    • Max. drift = ± 5% measured value
    • Auto drift correction, 30 ppm/week
    • Maintenance free


Dimensions

  • 12 cm L x 14 cm W x 4.3 cm H
    (4 3/4" L x 5 1/2" W x 1 5/8" H)


Weight

  • 0.28 kg (0.615 lb.)


Ambient Limits

  • Operating: -20 ºC to 55 ºC (-4 ºF to 131 ºF)
  • Shipping: -40 ºC to 60 ºC (-40 ºF to 140 ºF)
  • Humidity: 10% to 90% RH non-condensing

Application Diagram

Modules

The Universal Output Module (UM) provides a standard Reliable Controls 0-12 VDC 75 mA output. Built-in overload and short-circuit protection. Modulating or digital range configured using RC-Studio® 2.0. Sold in packages of ten.

The Relay Module (RM) is a Single Form C SPDT dry contact, 24 VAC/DC, 0.5 A. A jumper is provided to select normally open or normally closed operation. Ideal for switching low current and/or DC loads. Sold in packages of 10.

The TRIAC Output Module (TM) is a single normally open contact for 24 VAC loads only, 0.5 A. Ideal for switching 24 VAC control circuit loads found in packaged HVAC systems, and 24 VAC two-position or floating point actuators. Sold in packages of 10.