Product Details
The Honeywell PUB6438SR, also cataloged as the PUB6438S Programmable Controller, operates as a dedicated hardware component for HVAC temperature loop management and sequence execution within Spyder BACnet MS/TP networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PUB6438SR (PUB6438S Series) |
| Brand | Honeywell |
| Origin | USA / As specified on hardware label |
| Weight | 0.5 kg (1.1 lbs) typical |
| Operating Temp | -40 to 65 deg C (-40 to 149 deg F) |
| Power Consumption | 20 to 30 VAC @ 50/60 Hz (10 VA max) |
| Network Protocol | BACnet MS/TP |
| Universal Inputs (UI) | 6 channels |
| Digital Inputs (DI) | 4 channels |
| Analog Outputs (AO) | 3 channels (0-10 VDC / 4-20 mA) |
| Digital Outputs (DO) | 8 channels (Triac / Relay) |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The PUB6438SR executes continuous proportional-integral-derivative (PID) loop calculations and output modulating actions across 6 Universal Inputs, 4 Digital Inputs, 3 Analog Outputs, and 8 Digital Outputs. Universal inputs support direct thermistor, RTD, or 0-10 VDC / 4-20 mA HART loop protocol signal conditioning. Channel-to-channel isolation on the field wiring block prevents ground loops and electrical interference from degrading temperature sensing accuracy across multi-stage air handling and terminal unit applications.
Frequently Asked Questions
Q: What power input voltage is required for operating the PUB6438SR controller?
A: The module requires an external AC power source delivering 20 to 30 VAC at 50/60 Hz with a maximum power draw of 10 VA.
Q: How are field sensor inputs and output channels configured on the PUB6438SR?
A: Universal inputs and analog outputs are software-configurable via Honeywell Spyder programming tools to accept temperature sensors, 0-10 VDC, or 4-20 mA signals.
Field Installation Guidelines
- Secure the controller onto a standard 35 mm DIN rail inside a protective NEMA or IP-rated enclosure prior to applying power.
- Route AC power supply wiring (20-30 VAC) in separate conduit channels from low-voltage analog temperature sensor input lines.
- Terminate shield wires from field temperature sensors to a single point cabinet earth ground to maintain signal integrity.
- Set the BACnet MS/TP network MAC address DIP switches and baud rate configuration settings according to the master network segment schedule.
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.
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