Honeywell PUB4024S Spyder BACnet Programmable Controller

Product Description

The Honeywell PUB4024S is a programmable controller from the Spyder BACnet MS/TP family, designed for general-purpose HVAC applications. It is configured and programmed using NiagaraAX Framework software and communicates over a BACnet MS/TP network.

This controller is suitable for standalone or networked control of HVAC equipment such as fan coil units, heat exchangers, radiant panels, ventilation units, and heat pumps. It features flexible I/O options and system control capabilities to achieve efficient building management.

Key Features

Supports BACnet MS/TP communication protocol.
EIA-485 (RS485) communication; baud rate from 9.6 to 115.2 Kbps.
Compatible with Sylk™ bus for power and communication to wall modules.
Up to 50 controllers per BACnet MS/TP bus.
Configurable with NiagaraAX Framework software.
UL-compliant enclosure.
Plug-in terminal blocks for easy installation.

I/O Configuration

Type	Quantity
Universal Inputs (UI)	4
Digital Inputs (DI)	0
Analog Outputs (AO)	2
Digital Outputs (DO)	4

Technical Specifications

Electrical

Power Supply Voltage: 20–30 Vac; 50/60 Hz
Power Consumption: Max 5 VA (controller only)
Sensor Power Output: 20 Vdc ±10%, max 75 mA

Environmental

Operating Temperature: -40°C to 65.5°C
Storage Temperature: Same as above
Relative Humidity: 5%–95% RH non-condensing

Dimensions

Size (HxWxD): 159 mm × 262 mm × 57.4 mm

Processor & Memory

Microprocessor: 32-bit ATMEL ARM 7
Flash Memory: 512 KB
RAM: 128 KB
A/D Conversion Resolution: 12-bit

Input Types Supported (UI)

NTC Thermistor (20KΩ): -40°C ~ 93°C
Temperature Sensors (C7031G, C7041F): -40°C ~ 49/121°C
TR23 Setpoint Module: 500Ω–10.5kΩ
Resistive Input: 100Ω–100kΩ
Voltage Input: 0–10 VDC (e.g., from VFDs)
Digital Input (Dry Contact): Open ≥ 3000Ω, Closed < 3000Ω

Output Specifications

Analog Output (AO):
- Voltage: 0–10 Vdc, Max 10 mA
- Current: 4–20 mA, Max load 550Ω
Digital Output (DO):
- Voltage: 20–30 Vac
- Current: 25 mA to 500 mA (peak 800 mA for 60 ms)