LC-VEC100-0 Johnson Controls Verasys

Overview

The Johnson Controls LC-VEC100-0 Verasys Equipment Controller (VEC) is a plug-and-play, configurable digital controller designed to monitor and control non-Smart HVAC rooftop units (RTUs), including Variable Air Volume (VAV) and Changeover Bypass (COBP) systems. Operating on an RS-485 BACnet MS/TP bus as a BACnet Advanced Application Controller (B-AAC), it features an integral real-time clock for standalone scheduling and seamlessly integrates into Verasys building automation networks.

Features

• Supports up to 2 stages of heating and 4 stages of cooling out-of-the-box, with additional applications available for modulated control and heat pumps.
• Plug-and-play functionality that automatically self-configures points, alarms, and trends within the Verasys system.
• Automated sensor integration that adapts sequences immediately upon connecting analog, return air, or CO2 sensors.
• Real-time alarm generation for supply air temperature deviations, fan status mismatch, and runtime limits.
• Standalone capabilities driven by an onboard real-time clock for scheduling, calendar functions, and trending even when offline from the network.

Specifications

• Model: LC-VEC100-0
• Communication Protocol: BACnet MS/TP (RS-485), Modbus
• Supply Voltage: 24 VAC, 50/60 Hz
• Inputs: 4 Binary Inputs (Dry Contact or Pulse Counter/Accumulator), support for analog sensors
• Outputs: 4 Binary Outputs (SPST Relays rated up to 240 VAC), 2 Binary Outputs (Triacs rated up to 240 VAC, 0.5A), 3 Configurable Outputs, 1 Utility Output Power Port (24 VAC)
• Mounting: DIN rail mount (35 mm) or remote panel mounting
• Enclosure/Compliance: IP20, UL 94 V-0 fire-retardant case, FCC Class A compliant

Applications

• Used in commercial and industrial buildings to provide bundled controls solutions for third-party, non-Smart commercial rooftop HVAC units.
• Specifically deployed to manage Variable Air Volume (VAV) commercial systems or multi-zone Changeover Bypass (COBP) commercial systems.
• Integrates with economizers to deliver advanced indoor air quality monitoring and demand-controlled ventilation (DCV) strategies.