Product Details
The Honeywell SA4219-1, also cataloged as the SA4219-1 Zone Expander Control Board, operates as a dedicated hardware component for expanded zone circuit monitoring and field loop signal routing within Honeywell security and panel platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SA4219-1 |
| Brand | Honeywell |
| Origin | USA / As specified on hardware label |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | Powered via panel multiplex expansion bus |
| Module Category | Zone Expander Module / Control Board |
| Zone Expansion Capacity | 8 supervised field zone inputs |
| Loop Supervision | End-of-Line (EOL) resistor circuit monitoring |
| Bus Interface | Standard panel multiplex communication loop |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The SA4219-1 expands physical loop density by processing up to 8 supervised field zone circuits over a multiplexed panel communication bus. Onboard signal conditioning networks establish electrical decoupling across individual input terminals, protecting low-voltage sense lines from common-mode voltage spikes and crosstalk. For system architectures incorporating analog industrial loops, remote field transmitters interface via 4-20 mA HART loop protocol through dedicated isolation barriers, ensuring precise digitized status monitoring without ground loop interference across the backplane bus.
Frequently Asked Questions
Q: How does the SA4219-1 interface with the primary control panel assembly?
A: The SA4219-1 connects directly to the panel via a multiplexed expansion bus, receiving board operating power and transmitting digitized zone status data across the bus conductors.
Q: What type of circuit supervision is supported on the SA4219-1 input channels?
A: The input expansion channels utilize End-of-Line (EOL) resistor loop supervision to detect open-circuit, short-circuit, and normal loop conditions on connected field wiring.
Field Installation Guidelines
- Mount the SA4219-1 control board inside the main system cabinet or a dedicated remote expansion box using insulated standoff supports.
- Ensure all panel power sources and battery back-up leads are disconnected before inserting the expansion board into its designated bus header.
- Terminate all field zone conductors at the removable screw terminal blocks, installing specified End-of-Line resistors at the farthest field device.
- Route low-voltage signal wiring away from AC power conductors and earth all cable shielding to a single panel grounding terminal.
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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