Product Short Description
Product Brief Introduction
Standard blind termination plug manufactured for Honeywell FS fire alarm control panel communication bus ports; utilized to seal unused loop communication terminals, maintain bus electrical impedance matching and prevent bus signal reflection interference within addressable fire detection systems, compatible with all Honeywell FS fire alarm controller platforms.
Description
Technical Specifications
- Bus Compatibility: Honeywell FS two-wire addressable fire communication loop
- Nominal Bus Impedance Matching Value: 120 Ω resistive termination
- Operating Voltage Range: 18–32 V DC fire alarm bus supply voltage
- Rated Continuous Current: 100 mA DC maximum
- Operating Ambient Temperature: -10 °C to +50 °C
- Storage Temperature Range: -30 °C to +60 °C
- Mechanical Lifespan (Insert/Extract Cycles): 500 insertion and removal cycles
- Terminal Pin Configuration: Dual pin terminal matching FS panel bus port pinout
Functional Features
- Integrated precision 120 Ω load resistor for communication bus impedance termination
- Physical blind block seals empty bus port slots to prevent dust and short-circuit faults
- Standard pin form factor fully interchangeable with active field communication modules
- Eliminates communication signal echo and data packet loss on unterminated fire loops
- Low-profile compact design with no protruding external components
Material Composition
- Plug Housing: ABS UL94-V0 flame retardant plastic
- Internal Termination Resistor: Metal film precision resistor with ceramic core
- Contact Pins: Phosphor bronze base with gold plating anti-corrosion coating
- Retention Latch: Reinforced nylon elastic locking tab
Structural Characteristics
- Single-piece integrated molded blind plug structure with internal embedded resistor
- Spring-loaded gold-plated contact pins to ensure consistent electrical contact pressure
- Snap-in locking latch mechanism for secure port mounting without auxiliary fasteners
- Flat front blind surface fully covering unused panel port openings
Working Principle
When inserted into unused FS fire alarm communication bus terminals, internal 120 Ω precision resistor connects across the two bus signal lines to match the characteristic impedance of the fire detection two-wire loop cable. This matched load eliminates signal reflection at unterminated cable endpoints, stabilizes digital address communication waveforms, prevents data transmission errors and false fire fault alarms triggered by distorted bus signals. Plastic housing physically blocks exposed metal terminal pins to prevent accidental short-circuit contact with conductive debris or maintenance tools.
Advantage Highlights
- Factory-calibrated precision termination resistor eliminates manual resistor wiring errors
- Flame retardant housing complies with fire safety system component material standards
- Plug-and-play installation without wiring assembly labor
- Dual functionality of electrical impedance matching and physical port hazard isolation
- Universal compatibility across all Honeywell FS fire alarm controller variants
Applicable Industries
Commercial high-rise buildings, industrial manufacturing plant fire safety systems, airport terminal fire alarm networks, hospital facility fire detection systems, shopping mall addressable fire control panels, underground parking fire safety infrastructure
Installation Requirements
- Insert fully into vacant FS communication bus port until audible latch engagement click is heard
- Install one FS-BLIND-COM per unused two-wire communication bus terminal pair
- Verify no loose contact between plug pins and panel port metal terminals after insertion
- Locate all blind plugs inside fire control panel closed enclosure; no field exposed mounting permitted
Usage Precautions
- Do not modify internal resistor wiring or cut plug housing plastic structure
- Replace plug immediately if gold contact plating shows oxidation or corrosion discoloration
- Do not substitute generic uncalibrated resistors in place of FS-BLIND-COM for bus termination
- Remove blind plugs only when installing active field communication modules into respective ports
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