FS-TERM-0002 Screw-Terminal High-Current Industrial Power Distribution Vibration-Resistant Modular

1. High-Integrity SIL 3 Loop Termination Solution​

The Honeywell FS-TERM-0002 is a specialized termination module engineered for critical safety instrumented systems requiring SIL 3 compliance per IEC 61508. Designed to terminate 4-20mA safety loops in Honeywell FSeries safety relays, this device ensures ​signal integrity​ with ​​≤0.1Ω contact resistance​ and ​galvanic isolation​ between channels. Its ​UL94 V-0 flame-retardant polycarbonate housing​ provides ​IP20 protection​ for control cabinet installations while supporting ​​-40°C to +85°C operation. The module features ​gold-plated screw terminals​ compatible with ​0.2–2.5mm² wires​ and delivers ​250V AC/DC isolation voltage​ with ​4kV impulse withstand capability. Certified for ​intrinsic safety applications​ when used with approved barriers, it prevents signal reflection and maintains loop stability in hazardous area installations. This passive component requires no external power, making it ideal for emergency shutdown (ESD) systems, burner management, and HIPPS applications where undetected loop failures could compromise functional safety.

​2. Critical Technical Specifications​

The FS-TERM-0002 delivers essential termination performance with ​250V AC/DC channel-to-channel isolation​ and ​4kV surge protection​ (IEC 61000-4-5). Its ​tin-plated copper alloy terminals​ achieve ​​≤0.1Ω contact resistance​ after 500 insertion cycles and support ​wire gauges from 0.2–2.5mm² (AWG 24-12)​. The module operates across ​​-40°C to +85°C​ with ​​≤95% non-condensing humidity tolerance​ and ​10–55Hz vibration resistance. Compatible with all Honeywell FSeries safety relays including FS24x platforms, it occupies a ​single 17.5mm DIN-rail slot​ (EN 60715) with ​tool-less mounting. Safety certifications include ​CE, ​cULus, and ​ATEX/IECEx Zone 2 compatibility​ when paired with certified Zener barriers. The compact design weighs ​​≤50g​ while providing visual inspection ports for contact verification.

​3. Safety-Critical Industrial Applications​

This termination module is essential in SIL 3 safety systems:

• ​Oil & Gas HIPPS: Emergency shutdown valve transmitter loop termination
• ​Power Generation: Turbine overspeed sensor circuit completion
• ​Chemical Plants: Reactor pressure safety interlock loop integrity
• ​Burner Management: Flame detector signal stabilization
• ​Pharmaceutical: Sterilizer vessel overpressure switch termination
• ​Water Treatment: Chlorine gas detector loop completion
• ​Mining Ventilation: Methane sensor circuit termination in Zone 2 areas
• ​Compressor Stations: High-pressure trip system signal integrity
  Its primary function is maintaining loop integrity in 4-20mA safety instrumented functions (SIF), preventing open-circuit conditions that could cause undetected dangerous failures. When used with intrinsically safe (IS) barriers, it ensures proper impedance matching in explosive atmospheres per IEC 60079-11, critical for SIL 3 systems in refineries and offshore platforms where signal reflection could compromise safety availability.

​4. Functional Advantages​

• ​Safety Integrity:
  Maintains SIL 3 loop performance with ≤0.1Ω resistance drift
  Gold-plated contacts prevent oxidation-induced failures
• ​Installation Efficiency:
  Tool-less DIN-rail mounting (EN 60715 compliant)
  Color-coded terminals (blue=+, black=-) simplify wiring
• ​Environmental Resilience:
  Withstands H₂S/CO₂ corrosive atmospheres
  Salt spray resistance >500hrs (ISO 9227)
• ​Maintenance Simplicity:
  Visual inspection ports for contact verification
  No calibration or software configuration required
• ​Compatibility:
  Seamless integration with Honeywell FSeries safety relays
  Supports HART 7.5 signal transmission
• ​Lifecycle Durability:

  25-year service life
  500+ insertion cycles without degradation

​5. Operational Reliability & Diagnostics​

​Termination Mechanism:

1. ​Signal Path Optimization:
   Gold-plated terminals → Low-impedance path → Minimizes voltage drop (<5mV)
2. ​Loop Stability:
   Provides reference impedance (250Ω) for 4-20mA circuits
3. ​Fault Prevention:
   Prevents open-circuit conditions that could cause undetected failures

​Diagnostic & Maintenance Features:

• ​Visual Indicators:
  Transparent housing reveals terminal corrosion
  Torque verification marks (0.5Nm optimal setting)
• ​Preventive Maintenance:
  Contact resistance measurement points
  Loop integrity verification via HART diagnostics
• ​Compliance Verification:
  SIL verification reports include termination resistance values
  Audit trail documentation tags

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

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