VAV Controller: eZV-440

Description

The eZV-440 is a native BACnet® controller with an integrated airflow sensor and damper actuator for VAV applications, available in both configurable and hybrid-programmable versions.

The eZV communicates using BACnet MS/TP on its RS-485 main LAN port. It also has a RS-485 subLAN port for the optional addition of a Delta LINKnet network sensor(s).

Application

The eZV-440 covers a wide range of VAV configurations including multi-stage reheat with analog, binary or floating control, and series or parallel fan boxes.

The eZV-440 comes pre-loaded with a simple-to-configure factory algorithm; the hybrid-programmable eZVP-440 option allows customization of the built-in algorithms.  

Features

Native BACnet firmware allows easy integration with any BACnet system

Local scheduling, trending, and alarming support

Built-in configurable VAV algorithms for quick setup and commissioning

Optional hybrid-programmable option allows customization for non-standard sequences or repurposing unused 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

RS-485 subLAN supports up to 4 DNS or eZNS LINKnet network sensors

Specifications

BACnet Device Profile

BACnet Application Specific Controller (B-ASC)

Inputs (External)

4 Universal Inputs (12bit), software configurable for:

0-5VDC 0-10VDC

10 KΩ Thermistor
Dry Contact (using 10K setting)

Outputs (External)

4 Universal Outputs, software configurable for:

Analog 0-10VDC, 5 mA max

24 VAC TRIAC, 0.5 A max

Airflow Sensor

0-2 in. True Differential pressure sensor

Actuator I/O

1 Analog Input (0-10V) for actuator feedback

1 Universal Output and 1 TRIAC Output for damper control. Supports analog or floating actuator types.

Actuator Options

Belimo (-AB / -AFB)
45 in-lbs (5 Nm) nominal torque Optional Position Feedback

Siemens (-AS / -ASB)
44 in-lbs (5 Nm) nominal torque Optional Position Feedback

Technology

ARM Cortex M3 CPU

Device Addressing

Set via DIP switch or software