Product Details
The Honeywell PUB6438S, also cataloged as the PUB6438S Programmable Controller, operates as a dedicated hardware component for HVAC equipment control and process signal processing within Spyder BACnet MS/TP networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PUB6438S |
| Brand | Honeywell |
| Origin | USA / As specified on hardware label |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 20 to 30 VAC; 50/60 Hz |
| Controller Family | Spyder |
| Network Protocol | BACnet MS/TP |
| Universal Inputs (UI) | 6 channels |
| Digital Inputs (DI) | 4 channels |
| Analog Outputs (AO) | 3 channels |
| Digital Outputs (DO) | 8 channels |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The PUB6438S integrates high-density I/O handling across 6 Universal Inputs, 4 Digital Inputs, 3 Analog Outputs, and 8 Digital Outputs to execute deterministic sequence control over field actuators and transmitters. Analog and universal channel circuits are designed with internal isolation to prevent ground loop interference when interfacing with 4-20 mA HART loop protocol transmitters and variable frequency drive feedback lines. Channel-to-channel isolation minimizes cross-talk and preserves signal fidelity across multi-loop HVAC process topologies.
Frequently Asked Questions
Q: What power input voltage range is required to operate the PUB6438S controller?
A: The PUB6438S requires a rated supply voltage of 20 to 30 VAC at 50/60 Hz.
Q: What is the onboard I/O capacity of the Honeywell PUB6438S?
A: The controller includes 6 Universal Inputs (UI), 4 Digital Inputs (DI), 3 Analog Outputs (AO), and 8 Digital Outputs (DO).
Field Installation Guidelines
- Mount the PUB6438S securely onto a standard DIN rail or panel surface inside a protected enclosure before applying field power.
- Ensure all AC power wiring conforms to 20-30 VAC limits and is physically segregated from low-voltage I/O signal lines.
- Land field sensor and actuator wiring onto the removable terminal blocks, maintaining proper shield termination to earth ground at a single point.
- Set the BACnet MS/TP network address MAC switches and baud rates in accordance with system network commissioning rules prior to powering up the loop.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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