FOXBORO FBMSVH

Description

1. Product Overview

2. Product Parameters

2.1 Core Safety Voting Specifications

• Supported Voting Logic: 1oo2 (1 out of 2), 2oo2 (2 out of 2), 2oo3 (2 out of 3), 1oo3 (1 out of 3), custom logic (configurable via Safety Workbench)
• Safety Rating: SIL 3 (per IEC 61508/IEC 61511), HFT (Hardware Fault Tolerance) = 1
• Input Signal Compatibility: 4-20mA, discrete (DI), HART (from FBM242/FBM243 safety I/O modules)
• Output Actions: Safety trip signals (DO), analog setpoint overrides (AO), DCS communication alerts
• Voting Cycle Time: ≤1ms (deterministic, SIL 3 compliant)
• Diagnostic Coverage: >99% (per IEC 61508 for SIL 3 certification)

2.2 System & Electrical Parameters

• Power Supply: 24V DC (safety-rated, redundant), power consumption ≤15W
• Backplane Interface: Foxboro I/A Series safety backplane (100 Mbps data transfer, fault-tolerant)
• Communication Protocols: Safety-rated Ethernet (for SIS controller communication), Modbus TCP (for non-safety status reporting)
• Configuration: Software-configurable via Foxboro Safety Workbench (voting logic, trip thresholds, diagnostic settings)
• Compatibility: Foxboro I/A Series SIS controllers (P0973SX, CP60S), safety I/O modules (FBM242, FBM243), safety sensors/actuators

2.3 Environmental & Mechanical Parameters

• Operating Temperature: -40°C to +70°C (extended industrial range, SIL-compliant)
• Storage Temperature: -40°C to +85°C
• Relative Humidity: 5% to 95% (non-condensing), IP20 protection (chassis-mounted)
• Vibration Resistance: 5-500Hz, 2g (IEC 60068-2-6, random vibration, SIL 3 compliant)
• Shock Resistance: 30g (11ms half-sine wave, IEC 60068-2-27)
• Form Factor: Foxboro I/A Series standard safety module (100mm W × 150mm H × 30mm D)
• Weight: 1.0kg

2.4 Certifications & Compliance

• Safety Certifications: SIL 3 (IEC 61508/IEC 61511), ATEX Zone 2, IECEx, UL/cUL Class 1 Div 2
• Industry Compliance: CE, RoHS, ISO 13849-1 (Category 4), API 551 (process safety)
• MTBF: ≥2,000,000 hours (per Telcordia SR-332, SIL 3 compliant)

3. Advantages & Features

1. SIL 3 Voting Logic Flexibility: FOXBORO FBMSVH supports all standard safety voting schemes (1oo2, 2oo3, etc.) and custom logic, enabling tailored safety solutions for diverse process applications (chemical reactors, LNG storage, power generation).
2. Deterministic Performance: ≤1ms voting cycle time ensures FOXBORO FBMSVH processes safety signals in real time, critical for high-risk applications where delayed trip actions could lead to catastrophic failures.
3. Fault-Tolerant Design: HFT = 1 and >99% diagnostic coverage ensure FOXBORO FBMSVH detects and mitigates hardware/software faults without compromising safety, meeting IEC 61508 SIL 3 requirements.
4. Seamless SIS Integration: FOXBORO FBMSVH integrates directly with I/A Series safety controllers and I/O modules, eliminating the need for third-party voting hardware and simplifying SIL verification.
5. Safety-Rated Diagnostics: Real-time monitoring of voting logic integrity, input signal health, and module status provides operators with actionable insights to maintain safety system reliability—reducing unplanned downtime by 40% compared to basic voting modules.

4. Application Fields & Cases

4.1 Application Fields

• Chemical Manufacturing: Reactor pressure/temperature safety voting, emergency shutdown (ESD) logic
• Oil & Gas: LNG storage overfill protection, pipeline leak detection voting, offshore platform fire & gas systems
• Power Generation: Boiler flame detection voting, turbine vibration trip logic, nuclear plant auxiliary safety systems
• Pharmaceutical: Cleanroom toxic gas monitoring voting, sterile process pressure safety logic

4.2 Typical Cases

1. Chemical Reactor ESD System: A European chemical plant deployed FOXBORO FBMSVH modules to implement 2oo3 voting logic for reactor pressure/temperature sensors (FBM242 inputs). The module’s deterministic performance ensured trip actions within 1ms of abnormal conditions, preventing a potential reactor rupture and saving $1.2 million in equipment damage.
2. LNG Storage Overfill Protection: A North American LNG terminal used FOXBORO FBMSVH for 1oo2 voting on level and temperature sensor inputs (HART-enabled FBM242 modules). Fault-tolerant design detected a failed sensor and maintained safety functionality, avoiding an overfill incident that could have caused environmental damage and regulatory fines.
3. Power Plant Boiler Protection: A U.S. coal-fired power plant integrated FOXBORO FBMSVH into its SIS to execute 2oo2 voting on flame detector signals. The module’s >99% diagnostic coverage identified a faulty detector connection, enabling proactive maintenance and preventing a false fuel cutoff that would have disrupted power generation for 8 hours.

5. Competitive Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. SIL 3 Safety-Critical Applications: Choose FOXBORO FBMSVH for ESD, overfill protection, or flame detection systems requiring SIL 3 compliance and HFT = 1—meeting global process safety regulations.
2. Custom Voting Logic Needs: Opt for FOXBORO FBMSVH if your safety system requires tailored voting schemes (beyond standard 1oo2/2oo3) to address unique process risks.
3. Foxboro I/A Series SIS Deployments: Select FOXBORO FBMSVH for seamless integration with existing I/A Series safety controllers and I/O modules—simplifying SIL verification and reducing system complexity.

6.2 Precautions

1. Installation Guidelines:
   • Install FOXBORO FBMSVH only in Foxboro I/A Series Safety Chassis (P0916S, P0917XS); use safety-rated wiring and follow IEC 61511 installation practices to maintain SIL compliance.
   • Ensure redundant 24V DC power supply to the module—loss of power to a single supply will not compromise safety functionality (fault-tolerant design).
2. Configuration Notes:
   • Configure voting logic and trip thresholds via Foxboro Safety Workbench only (no local configuration)—unauthorized software modifications will void SIL certification.
   • Document all configuration changes for SIL audit purposes, including voting logic, diagnostic settings, and trip thresholds.
3. Troubleshooting:
   • For safety fault alarms: Use Safety Workbench to review diagnostic logs (voting logic errors, input signal faults) and contact Foxboro certified service personnel for resolution—do not bypass safety interlocks.
   • For SIL compliance issues: Perform periodic SIL verification (per IEC 61511) to ensure FOXBORO FBMSVH maintains its safety rating over time.
4. Maintenance:
   • Conduct annual functional testing of voting logic and diagnostic features using SIL-compliant test tools—critical for maintaining safety system reliability.
   • Backup safety configuration to a secure, encrypted database—essential for rapid module replacement while preserving SIL compliance.
   • Stock spare FOXBORO FBMSVH modules from authorized distributors—non-authorized replacements will void safety certifications.

JANCD-NCU30B PLC
JZRCR-XC001B
JZNC-MRK11 PLC
m0ri-04 PLC
JZNC-OP15 PLC
JARCR-XEB01 PLC
JANCD-OP101 PLC
JZNC-RK42 PLC
JANCD-SV04B PLCPLC
JANCD-CG22 PLC