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BNS 16 ST1-AS-V - Mechanical Interlock Redundant Contacts - SS IP67 SIL3 Anti-Vibration 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 |
Mechanical interlock safety switch
,Redundant contacts safety switch
,SIL3 anti-vibration switch
1. Compact Hygienic Safety Switch Overview
The Schmersal BNS 16 ST1-AS-V is a stainless-steel non-contact safety switch engineered for confined spaces in washdown environments. Featuring a 16mm sensing range and ±3mm lateral tolerance, this IP69K-rated device uses magnetic field sensing to monitor guard positions without mechanical wear. Its electropolished AISI 316L housing withstands high-pressure cleaning (100 bar @ 80°C), chemicals (pH 1-14), and temperatures from -30°C to +85°C. Certified to ISO 13849-1 PL d (Category 3) and SIL CL 2 per IEC 62061, the "AS" suffix enables ±3mm mounting adjustment, while "V" denotes a high-visibility violet status LED. The compact 40×40×20mm design integrates seamlessly into food processing equipment, pharmaceutical isolators, and lab automation systems requiring crevice-free surfaces (Ra ≤0.8μm) and EHEDG-compliant drainage.
2. Key Technical Parameters
- Safety Ratings:
- PL d (ISO 13849-1 Cat. 3) / SIL CL 2 (PFHD: 5.7×10⁻⁸/h)
- Electrical:
- Voltage: 24V DC ±10%
- Contacts: 2 NC force-guided (4A @ 250V AC)
- Power Consumption: ≤1.5W
- Sensing Performance:
- Switching Distance: 16mm ±0.5mm
- Lateral Tolerance: ±3mm
- Environmental:
- IP69K (IEC 60529)
- Chemical Resistance: Resists CIP/SIP solutions
- Materials:
- Housing: SS316L (FDA 21 CFR 177.2600)
- Actuator: Encrypted ferrite magnet
- LED Indicator:
- Violet (800mcd intensity, 120° viewing angle)
- Certifications:
- 3-A 08-19, EHEDG EL-A1
- IECEx Ex ic IIIC T80°C Dc
3. Targeted Applications
This switch excels in space-constrained hygienic zones:
- Pharmaceutical Capsule Fillers: Isolator access hatches with SIP compatibility
- Dairy Valve Stations: CIP-cleaned manifold guard monitoring
- Lab Automation: Biosafety cabinet interlocks
- Beverage Canning: Filler head guard doors
- Chemical Sampling Ports: Solvent-resistant access covers
- Biotech Incubators: Sterile chamber door monitoring
- Meat Processing: Bone saw guard interlocks
- Cosmetics Mixing: Reactor access security
Its compact size enables installation behind ≤1.5mm-thick guards while IP69K construction withstands daily autoclave cycles (135°C steam sterilization).
4. Functional Advantages
- Hygienic Design:
- Zero dead spaces (EN 1672-2 compliant)
- Self-draining 3° sloped surfaces
- Tamper Resistance:
- 64-bit magnetic coding prevents bypass
- Torque-limited security screws (4Nm)
- Installation Precision:
- Laser-etched alignment guides (±0.3mm accuracy)
- Tool-free lateral adjustment (±3mm)
- Diagnostic Visibility:
- Violet LED distinguishable in red-dominated environments
- 20m visibility in low-light conditions
- Corrosion Defense:
- Passivated SS316L resists chloride stress corrosion
- Hermetic epoxy encapsulation
- Safety Integrity:
- Force-guided contacts guarantee ≥0.3mm separation
- Automatic welding detection
- Lifecycle Durability:
8 million operations
Hot-swappable actuator replacement
5. Safety Operation & Diagnostics
Magnetic Sensing Sequence:
- Guard Closure:
- Actuator alignment within 16mm → reed contacts close
- Violet LED illuminates
- Continuous Monitoring:
- Hall sensors track position (±0.2mm)
- Current sensors detect contact anomalies
- Fault Response:
-
1mm displacement opens contacts within 20ms
- LED extinguishes during faults
-
- Reset Protocol:
- Physical guard reclosure required
- 100ms self-test validates contact separation
Diagnostic Indicators:
- Solid Violet: Guard secured
- Slow Flashing (1Hz): Minor misalignment (<1mm)
- Rapid Flashing (4Hz): Critical misalignment (>1mm)
- Off: Guard open/fault condition
Safety Architecture:
- Dual-channel contact monitoring
- Undervoltage lockout below 18V DC
- Mechanical contact separation >0.3mm
| Parameter | Value |
|---|---|
| Product Type | RFID-Coded Safety Hinge Switch with Vertical Lever Actuator |
| Model Number | BNS 16 ST1-AS-V |
| Rated Voltage | 24 V DC (11–30 V DC range) |
| Current Consumption | ≤ 40 mA (idle), ≤ 100 mA (switching) |
| Safety Outputs | Dual-channel PNP (semiconductor), short-circuit protected |
| Output Current | 0.5 A per channel (max.) |
| Contact Configuration | 2 NO (Normally Open) safety outputs |
| Coding Technology | RFID (High coding level "C" per EN ISO 14119) |
| Actuator Type | Vertical spring-return lever (V-suffix) |
| Actuation Force | ≤ 9.5 N |
| Over-travel | ≥ 50% of actuation travel |
| Protection Rating (IP) | IP67 (housing and actuator) |
| Housing Material | Reinforced polyamide (PA66-GF25), black |
| Operating Temperature | -25°C to +85°C |
| Safety Standards | EN ISO 13849-1, EN IEC 60947-5-3, EN ISO 14119 |
| Safety Category | Category 4, PL e |
| SIL | SIL 3 (IEC 62061) |
| Electrical Life | 1 × 10⁷ cycles (no load), 1 × 10⁶ cycles (rated load) |
| Mechanical Life | 2 × 10⁷ operations |
| Connection | M12 × 1 connector (5-pin, A-coded) or pre-wired cable (0.5 m) |
| Terminal Cross-Section | 0.14–1.0 mm² (pre-wired version) |
| Mounting | 2 × M4 screws (mounting torque 1.2–1.5 Nm) |
| Dimensions (H×W×D) | 52 mm × 16 mm × 42 mm (smallest in BNS 16 series) |
| Weight | 85 g |
| Actuator Angle | Vertically aligned (±5° tolerance) |
| Shock Resistance | 100 g (6 ms pulse, IEC 60068-2-27) |
| Vibration Resistance | 10–500 Hz, 5 g amplitude (IEC 60068-2-6) |
| Reset Mode | Automatic upon door closure |
| Certifications | CE, UL 508, cULus, TÜV, EAC, RoHS, KOSHA |
| Applications | Compact machinery guards, control cabinets, robotic access doors |
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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