QCA-Z44 Application Controller

For Monitoring, Control & Network Surveillance of Remote Sites


Our COSYS Application and System Controls work along with our enterprise software platform OspreyFMS to provide a meaningful context.

The QCA-Z44 is a native BACnet® controller optimized for zone terminal unit applications available in both configurable and fully programmable versions. The controller is line-powered with a built-in 24 VAC inverter providing field power for low voltage peripheral devices such as sensors and valves. Line voltage rated relay outputs allow direct switching of line loads, such as fan motors.
The QCA-Z44 communicates using BACnet MS/TP on its RS-485 main LAN port. 


  • Line voltage rated relays allows direct switching of fan motor loads
  • Universal line power input with built-in 24 VAC inverter removes need for local control transformer
  • Local scheduling, trending, and alarming support
    Built-in fan coil and heat pump configurable algorithms for quick setup and commissioning
  • Optional programmable feature allows customization for
    non-standard sequences or repurposing spare I/O
  • Universal outputs provide flexibility for any combination of analog, binary, or floating output stages
  • Firmware upgrade and database load / save over the network


The combination of line-rated relays, universal low voltage inputs and outputs ensures the QCA-Z44 has the I/O flexibility to cover a wide range of terminal unit applications and configurations.
The QCA-Z44 includes built-in fan coil and heat pump algorithms that are easy to configure for typical applications.
The QCA-Z44 is a fully programmable model that allows you to either create your own completely custom zone programs or modify the built-in algorithm’s behavior.


BACnet Device Profile
BACnet Application Specific Controller (B-ASC)

4 Universal Inputs (12-bit), software configurable for:
0-5 VDC
0-10 VDC
10 kΩ Thermistor
Dry Contact (using 10 kΩ Thermistor jumper setting)

3 relays, jumper-selectable for 3-speed fan interlocked or independent relay control

250 VAC: 5 A General Purpose

120 VAC: 4.4 FLA / 26.4 LRA

240 VAC: 2.2 FLA / 13.2 LRA

277 VAC: 1.8 FLA / 10.8 LRA

1 SPST NO Auxiliary Relay
277 VAC, 10 A (resistive)

4 Universal Outputs, software configurable for:

Analog 0-10 VDC @ 5 mA max
24 VAC TRIAC @ 9 VA max (total for Power out and all TRIACs)

35 mm DIN rail or screw mount

Device Addressing
Set via DIP switches or software setup

Screw-type terminal connectors on baseplate
Terminals 28-38 Class 1
All other terminals Class 2 / SELV

Wiring Class
NEC Class 1 (Relay and power terminals 28-38)
NEC Class 2 (All other terminals)

Power In
100-277 VAC, 50/60 Hz @ 55 VA max

Power Out
24 VAC @ 9 VA max (total for Power out and TRIAC output loading)
ARM Cortex M3 CPU

Communications Ports
RS-485 NET1
BACnet MS/TP @ 38400 or 76800 bps (default)

0° to 55°C (32° to 131°F)
10 to 90% RH (non-condensing)

15.0 x 12.5 x 4.0 cm (5.9 x 4.9 x 1.6 in.)g

331 g (0.730 lb)

Enclosure Protection Rating



Order according to the following product numbers:

QCA-Z44  Configurable Controller—100-277 VAC input power, 24 VAC inverter, 4 universal inputs, 4 universal outputs and 4 relay outputs