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BNS 40S-12Z - Non-Contact Dual-Contact Magnetic Switch - SS IP67 SIL2 Industrial Safety
| 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 BNS 40S-12Z is a space-optimized safety switch engineered for confined industrial applications requiring hygienic design. Featuring a stainless steel housing (AISI 316L) with IP69K protection, this compact device utilizes non-contact magnetic technology to monitor guard positions with a 12mm sensing distance. Certified to ISO 13849-1 PL d (Category 3) and IEC 62061 SIL 2, its miniature footprint (40×40×20mm) enables installation in tight spaces like robotic tool changers and cleanroom equipment. Operating at 24V DC within -30°C to +85°C, it withstands high-pressure washdowns (100 bar), chemicals (pH 1-14), and UV exposure. The integrated green LED provides visual status confirmation while the force-guided NC contacts ensure fail-safe operation in food processing, pharmaceutical, and electronics manufacturing environments.
2. Key Technical Parameters
- Safety Ratings:
- PL d (ISO 13849-1 Cat. 3)
- SIL 2 (IEC 62061, PFHD: 5.8×10⁻⁹/h)
- Electrical:
- Voltage: 24V DC ±10%
- Contacts: 2 NC (4A @ 250V AC)
- Power Consumption: ≤1.2W
- Mechanical:
- Dimensions: 40×40×20mm (W×H×D)
- Switching Distance: 12mm ±0.5mm
- Lateral Tolerance: ±2mm
- Environmental:
- IP69K (IEC 60529)
- Chemical Resistance: Resists oils, acids, alkalis
- Materials:
- Housing: SS316L (Ra ≤0.8μm)
- Actuator: Ferrite magnet with epoxy encapsulation
- LED Indicator:
- Green: Guard closed/secure
- Certifications:
- EHEDG EL-A1, 3-A 08-19
- UL 508, RoHS
3. Primary Applications
This compact switch excels in space-constrained hygienic environments:
- Robotic Tool Changers: Safety monitoring on collaborative robot end-effectors
- Pharmaceutical Isolators: Gloveport position verification in GMP cleanrooms
- Food Packaging: Guarding on vertical form-fill-seal machine access panels
- Medical Device Manufacturing: Sterile assembly station door monitoring
- Semiconductor Production: Wafer handling equipment access control
- Dispensing Systems: Chemical cabinet door interlocks
- Laboratory Automation: Biosafety cabinet hatch security
- Conveyor Junctions: Mini-guard monitoring in bottling lines
Its miniature size allows integration into equipment with ≤50mm guard profiles while IP69K rating ensures compatibility with daily CIP/SIP sanitation cycles.
4. Functional Advantages
- Space Optimization:
- 60% smaller than standard safety switches
- Fits behind guards ≤1.5mm thick
- Hygienic Design:
- Electropolished SS316L (FDA 21 CFR 177.2600)
- Zero dead spaces (EHEDG compliant)
- Tamper Resistance:
- Coded magnet pairing prevents bypass
- Torx T8 security screws
- Visual Verification:
- High-intensity green LED (1,800mcd)
- 150° viewing angle
- Installation Flexibility:
- ±2mm lateral tolerance
- Vertical/horizontal mounting
- Maintenance Reduction:
10 million non-contact operations
Tool-free actuator replacement - Safety Compliance:
- Pre-validated for EN ISO 14119 Type 3
- SIL 2 templates for safety PLCs
5. Safety Operation & Diagnostics
Magnetic Interlock Sequence:
- Guard Closure:
- Actuator aligns within 12mm → reed contacts close
- Green LED illuminates within 50ms
- Continuous Monitoring:
- Hall sensors verify position (±0.2mm)
- Current monitoring detects contact faults
- Fault Response:
-
1mm displacement opens contacts
- LED extinguishes during faults
-
- Reset Protocol:
- Automatic upon guard reclosure
- Self-test validates contact separation
Safety Architecture:
- Force-Guided Contacts:
• Mechanically linked NC contacts
• ≥0.3mm guaranteed separation gap - Environmental Protection:
• Double-sealed cable gland (IP69K)
• Pressure-equalization membrane - Diagnostic Features:
• LED status correlates with contact position
• Auxiliary output option for PLC diagnostics
| Parameter | Specification |
|---|---|
| Product Type | Compact Safety Interlock Switch with Self-Adjusting Roller Actuator |
| Model Number | BNS 40S-12Z |
| Safety Category (EN ISO 13849-1) | PLe, Category 4 (dual-channel wiring) |
| SIL Rating (EN IEC 62061) | SIL CL 2 |
| Actuation Principle | Integrated Roller Lever (Stainless Steel Roller, Self-Adjusting) |
| Contact Configuration | 2 N/O (Safety) + 2 N/C (Monitoring) – Dual-Channel Diagnostics |
| Contact Mechanism | Positive-Opening (EN 60947-5-1 Annex K) |
| Contact Material | Silver Alloy (AgSnO₂) – Anti-Welding |
| Rated Voltage (Ue) | 24V DC / 230V AC |
| Max. Switching Current | 10 A (AC-15, 250V AC); 8 A (DC-13, 24V DC) |
| Utilization Category | AC-15 (230V AC), DC-13 (24V DC) |
| Housing Material | Zinc Die-Cast (Epoxy Coated, Grey RAL 7035) |
| Protection Rating | IP67 (NEMA 4/4X/13) |
| Electrical Connection | Screw Terminals (6-pin: 13-14/23-24 N/O, 31-32/41-42 N/C) |
| Terminal Capacity | 0.5–1.5 mm² (solid) / 0.5–1.0 mm² (stranded) |
| Cable Gland Entry | M12 × 1.5 (2 entries) |
| Operating Temperature | -25°C to +70°C |
| Mechanical Life | > 2,000,000 cycles |
| Electrical Life | > 200,000 cycles (AC-15, 230V, 3A) |
| Safety Standards | EN ISO 14119 (Type 4), EN 60947-5-1, IEC 62061 |
| Approvals | CE, cULus, CCC, EAC |
| Actuator Type | Built-In Roller Lever (360° Rotatable) |
| Actuation Force | ≤ 15 N |
| Misalignment Tolerance | ±1.5 mm (axial/lateral) |
| Shock Resistance | 30 g (11 ms duration) |
| Vibration Resistance | 10–55 Hz, amplitude 0.75 mm |
| Diagnostic Coverage | >99% (Cat. 4) |
Packaging & Shipping
Company Information
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