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BNS 16-12ZD - Non-Contact Magnetic Dual-Contact - SS IP67 SIL2 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 BBNS 16-12ZD is a high-security magnetic safety switch engineered for industrial access control in demanding environments. Featuring a stainless steel housing (IP69K rated), this device utilizes encrypted magnetic coding to prevent tampering while monitoring guard positions. The "16" designation indicates a 16mm switching distance with ±3mm lateral tolerance, accommodating installation variances. Certified to ISO 13849-1 PL e (Category 4) and IEC 62061 SIL 3, it operates reliably in temperatures from -30°C to +85°C and withstands 100-bar pressure washdowns, chemicals (pH 1-14), and mechanical impacts (IK10). Integrated dual-color LEDs provide visual status for guard position (green) and diagnostics (yellow), while the corrosion-resistant AISI 316L construction ensures longevity in food processing, pharmaceutical, and marine applications.
2. Key Technical Parameters
- Safety Ratings:
- PL e (ISO 13849-1 Cat. 4, DCavg=99%)
- SIL 3 (IEC 62061, PFHD: 1.5×10⁻⁹/h)
- Electrical Specifications:
- Voltage: 24V DC ±10% (19.2-28.8V)
- Contacts: 2 NC force-guided (8A @ 250V AC)
- Power Consumption: ≤2.5W
- Sensing Performance:
- Switching Distance: 16mm ±1mm
- Lateral Tolerance: ±3mm
- Environmental:
- IP69K (IEC 60529)
- Chemical Resistance: Resists acids, alkalis, solvents
- Materials:
- Housing: SS316L (Ra ≤0.8μm)
- Actuator: Encrypted ferrite magnet array
- LED Indicators:
- Green: Guard closed/secure
- Yellow: Pre-fault warning
- Certifications:
- ATEX Zone 21/22, UL 508
- IECEx Ex tc IIIC T85°C Dc
3. Primary Applications
This switch excels in critical safety scenarios:
- Food Processing: CIP washdown areas on meat cutting lines
- Pharmaceutical Isolators: Sterile filling line access hatches
- Chemical Plants: Reactor maintenance doors with acid exposure
- Automotive Paint Shops: Robotic cell access gates with solvent resistance
- Marine Engineering: Saltwater-resistant safety doors on vessels
- Wastewater Treatment: Sludge tank covers with H₂S resistance
- Packaging Machinery: Aseptic bottling line guard doors
- Mining Equipment: Dust-immersion protection for crusher enclosures
Its IP69K rating and SIL 3 certification make it indispensable for hygienic industries requiring daily high-pressure sanitation and SIL-compliant safety systems.
4. Functional Advantages
- Tamper-Proof Security:
- 128-bit magnetic encryption prevents actuator duplication
- Torque-monitored security screws (5Nm)
- Corrosion Defense:
- Electropolished SS316L resists chloride-induced stress corrosion
- Crevice-free design (EN 1672-2 compliant)
- Diagnostic Intelligence:
- Green LED: Positive guard closure confirmation
- Yellow LED: >1mm misalignment or thermal drift
- Installation Flexibility:
- ±3mm lateral tolerance for door/warpage compensation
- 360° visible LEDs
- Safety Redundancy:
- Dual-channel monitoring with cross-fault detection
- Force-guided contacts guarantee ≥0.5mm separation
- Lifecycle Benefits:
-
10 million non-contact operations
- Hot-swappable actuator replacement
-
- Global Compliance:
- EHEDG Type EL-A1, 3-A 08-19
- SIL 3 templates for safety PLC integration
5. Safety Operation Principle
Magnetic Interlock Sequence:
- Guard Closure:
- Actuator aligns within 16mm → reed contacts close
- Green LED illuminates
- Continuous Monitoring:
- Hall sensors track position (±0.5mm)
- Current monitoring detects contact welding
- Fault Response:
-
1mm displacement triggers contact opening within 20ms
- Yellow LED activates at 0.5mm misalignment
-
- Reset Protocol:
- Physical guard reclosure required
- System performs self-test (contact gap verification)
SIL 3 Safety Architecture:
- Dual-Processor System:
• ARM Cortex-M4 cores with cross-verification
• 10ms watchdog timer - Failure Mode Coverage:
• Contact welding forces mechanical separation
• Undervoltage lockout below 18V DC - Diagnostic Hierarchy:
Condition Green LED Yellow LED Safety Output Normal operation ON OFF NC closed Guard open OFF OFF NC open Minor misalignment ON FLASHING NC closed Critical misalignment OFF ON NC open Contact fault OFF OFF NC forced open
| Parameter | Specification |
|---|---|
| Product Type | Compact Safety Interlock Switch with Dual-Channel Diagnostics & Roller Actuator |
| Model Number | BNS 16-12ZD |
| Safety Category (EN ISO 13849-1) | PL e, Category 4 (when dual-channel monitored) |
| SIL Rating (EN IEC 62061) | SIL 3 |
| Actuation Principle | Integrated Roller Lever (Self-Adjusting Stainless Steel Roller) |
| Contact Configuration | 1 N/O (Safety) + 1 N/C (Monitoring) + 1 N/O (Auxiliary) |
| Contact Mechanism | Positive-Opening (EN 60947-5-1 Annex K Compliant) |
| Contact Material | Silver Tin Oxide (AgSnO₂) – Anti-Welding |
| Rated Voltage (Ue) | 24V DC / 230V AC |
| Max. Switching Current | 8 A (AC-15, 250V AC); 6 A (DC-13, 24V DC) |
| Utilization Category | AC-15 (230V AC), DC-13 (24V DC) |
| Housing Material | Hybrid: Zinc Base + Polyamide Cover (UL94 V-0) |
| Protection Rating | IP67 (NEMA 4/4X/13) |
| Electrical Connection | M12 × 1, 5-pin Connector (Pre-wired options available) |
| Terminal Cross-Section | 0.25–1.5 mm² |
| Operating Temperature | -25°C to +75°C |
| Mechanical Life | > 10,000,000 cycles |
| Electrical Life | > 300,000 cycles (AC-15, 230V, 3A) |
| Safety Standards | EN ISO 14119 (Type 4), EN 60947-5-1, IEC 62061 |
| Approvals | CE, cULus, UKCA, TÜV |
| Actuator Type | Self-Adjusting Roller Lever (360° Rotation) |
| Actuation Force | ≤ 20 N |
| Misalignment Tolerance | ±2 mm (Axial/Lateral) |
| Vibration Resistance | 10–55 Hz, 1.5 mm amplitude |
| Shock Resistance | 100 m/s² (6 ms duration) |
| Diagnostic Coverage | >99% (Cat. 4) |
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.
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