Honeywell XL2000B3A programmable direct digital controller

1. Product Overview

The Honeywell XL2000B3A is a programmable direct digital controller (DDC) designed for commercial building automation. It controls HVAC systems (e.g., air handlers, chillers, boilers) to optimize energy efficiency and maintain indoor comfort.

2. Core Specifications

• Input/Output (I/O): 8 universal analog inputs, 4 analog outputs, 8 digital inputs, 4 digital outputs
• Communication Protocol: BACnet MS/TP (default); compatible with Honeywell EBI building management system
• Operating Voltage: 24V AC (50/60 Hz); 20.4V AC - 26.4V AC (range)
• Operating Temperature: 0°C to 50°C (32°F to 122°F)
• Storage Temperature: -20°C to 60°C (-4°F to 140°F)
• Humidity Range: 5% - 95% RH (non-condensing)

3. Key Features

• Supports custom control logic via Honeywell EBI Configuration Tool
• Built-in fault detection and diagnostic reporting for system troubleshooting
• Energy-saving algorithms (e.g., demand control ventilation, setback scheduling)
• LED indicators for power, communication status, and I/O activity
• Field-upgradable firmware for enhanced functionality

4. Mechanical Details

Mounting Type: DIN rail (35mm standard) or panel mount
Dimensions: 140mm (W) x 90mm (H) x 60mm (D) (5.5" x 3.5" x 2.4")
Housing Material: Polycarbonate (flame-retardant, UL 94 V-0 rated)
Weight: Approx. 300 grams (0.66 lbs)

Note: This intermediate document provides key technical data. For full installation guides, wiring diagrams, and compliance certifications (UL, CE), refer to the official Honeywell XL2000B3A User Manual (Document No. 63-1984-01).