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BDF200 - 3NO+3NC Redundant Interlock - SS IP67 SIL3 Industrial Safety Switch
| MOQ: | 1 |
| Price: | USD 100-10000/Piece |
| Standard Packaging: | 50*50*50mm |
| Delivery Period: | 3-7 |
| Payment Method: | T/T |
| Supply Capacity: | 1/piece in stock |
1. Product Overview
The Schmersal BDF200-NH-11-LT-LT-LT-2875/2920 is a high-security magnetic safety switch engineered for SIL 3/PL e applications in extreme industrial environments. Featuring a stainless steel housing (IP69K) with triple LED status indicators (LT-LT-LT), this device integrates dual-channel monitoring (11 suffix) and force-guided NC contacts (NH). The modular design includes a pre-wired 5m PUR cable (2875) with M12 connectors (2920) for rapid installation. Certified to ISO 13849-1 Category 4, it monitors guard positions with 8mm switching distance while resisting high-pressure washdowns (100 bar), chemicals (pH 1-14), and temperatures from -30°C to +85°C. The triple-color LEDs provide multi-stage diagnostics, while the stainless steel construction ensures corrosion resistance in food/pharma/chemical processing.
2. Key Technical Parameters
- Safety Ratings:
- ISO 13849-1 PL e (Cat. 4)
- IEC 62061 SIL 3 (PFHD: 1.2×10⁻⁹/h)
- Diagnostic Coverage: 99.8%
- Electrical:
- Voltage: 24V DC ±10%
- Contacts: 2 NC (6A @ 250V AC)
- Cable: 5m PUR (IP67) + M12 connectors
- Mechanical:
- Housing: SS316L stainless steel
- Switching Distance: 8mm ±1mm
- Lateral Tolerance: ±3mm
- Environmental:
- IP69K (100 bar/80°C)
- Shock: 100g (IEC 60068-2-27)
- LED Indicators:
- Green: Guard closed
- Yellow: Warning/pre-fault
- Red: Critical fault
- Certifications:
- ATEX/IECEx Zone 21/22
- UL 508, CSA 22.2 No. 14
3. Primary Applications
This switch excels in critical safety scenarios:
- Aseptic Fill Lines: Hygienic guard monitoring with EHEDG compliance
- Chemical Reactors: Hatch security in acid/caustic environments
- Marine Platforms: Saltwater-resistant access control
- Automotive Paint Shops: Robotic cell guarding with solvent resistance
- High-Pressure Sterilizers: Autoclave door monitoring (16 bar)
- Waste Incineration: Hatch security in corrosive gas environments
- Pharmaceutical Isolators: GMP-compliant gloveport monitoring
- Mining Conveyors: Dust-immersion protection (IP6X)
The M12 connectors enable tool-free replacement in <2 minutes, while PUR cable resists hydrolysis in steam environments.
4. Functional Advantages
- Predictive Diagnostics:
- Yellow LED: 10% actuator misalignment
- Red LED: Contact welding/cable fault
- Corrosion Defense:
- Electropolished SS316L (Ra 0.4μm)
- Crevice-free per EN 1672-2
- Tamper Resistance:
- Encrypted RFID actuator pairing
- Torque-controlled security screws (5Nm)
- Maintenance Optimization:
- Hot-swappable actuator modules
- Cable strain relief (100N pull force)
- Safety Redundancy:
- Cross-monitored dual processors
- Mechanical contact separation >0.5mm
- Global Compliance:
- 3-A Sanitary Standard 08-19
- Marine DNV-GL certification
5. Safety Operation & Integration
Interlock Sequence:
- Authentication:
- Actuator transmits encrypted ID via RFID
- Valid code closes NC contacts
- Continuous Monitoring:
- Hall sensors track actuator position (±0.2mm)
- Current sensors detect contact anomalies
- Fault Response:
- Stage 1 (Yellow LED): >1mm misalignment → warning
- Stage 2 (Red LED): >2mm displacement → shutdown
- Reset Protocol:
- Physical guard reclosure required
- System self-test (contact gap verification)
Diagnostic Hierarchy:
| Condition | Green LED | Yellow LED | Red LED |
|---|---|---|---|
| Normal operation | ON | OFF | OFF |
| Minor misalignment | ON | FLASHING | OFF |
| Major misalignment | OFF | ON | OFF |
| Contact fault | OFF | OFF | FLASHING |
| Power loss | OFF | OFF | OFF |
SIL 3 Implementation:
- Dual ARM Cortex-M4 processors with cross-checking
- Watchdog timer with 50ms cycle
- ECC memory protection
- Safe-state output on fault (0V)
| Parameter Category | Specification Details |
|---|---|
| Manufacturer & Model | Schmersal BDF200-NH-11-LT-LT-LT-2875/2920 |
| Product Type | Safety Hinge Switch with Mechanical Locking (Dual-Channel Monitoring) |
| Safety Standards | ISO 14119, ISO 13849-1, IEC 62061, EN 60947-5-1 |
| Safety Level | PL e (ISO 13849-1), SIL 3 (IEC 62061) |
| Contact Configuration | 11 = 2 N/O + 2 N/C (Positively guided contacts, EN 60947-5-1) |
| Actuator Type | Not Specified (Standard fork actuator included; compatible with ST/EX series) |
| Locking Mechanism | Spring-Loaded Mechanical Lock (4,000 N holding force) |
| Housing Material | NH (Nylon 6.6) Halogen-free, chemical/oil-resistant (UL94 V0) |
| Connection Type | 3× Pre-wired PUR Cables with M20 Cable Glands |
| Cable Details | • 3× LT: PUR Oil-Resistant Cables • Lengths: 2,875 mm + 2,920 mm + 2,920 mm • Conductors: 4×0.25 mm² (per cable) |
| Voltage Rating | 24 V AC/DC (Standard for safety circuits) |
| Contact Rating | 6 A @ 250 VAC, 6 A @ 24 VDC (Resistive) |
| Protection Rating | IP67 (Dust/waterproof; submersible to 1 m) |
| Operating Temperature | -25°C to +70°C |
| Locking Force | 4,000 N (Suitable for high-vibration environments) |
| Position Tolerance | ±5 mm (Vertical/horizontal adjustment) |
| Mechanical Life | ≥1 million cycles (Locking mechanism) |
| Electrical Life | ≥100,000 cycles (At rated load) |
| Release Principle | • Auto-lock on door closure • Manual key extraction only in safe state |
| Shock/Vibration Resistance | 10 g / 55 Hz (IEC 60068-2-6) |
| Mounting | Hinge-integrated (4× M5 screws; max. door weight: 50 kg) |
| Approvals | CE, cULus, TÜV, UKCA |
| Key Features | • Triple pre-wired cables for complex safety systems • Dual-channel diagnostics • Chemical-resistant PUR cables (ISO 1817) • Tool-free actuator adjustment • Integrated hinge function |
Packaging & Shipping
Company Information
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