PSC1-C-10-FB2 Mechanical Interlock Single Contact Switch IP67 Stainless Steel Heavy Duty Flange Guard

1. Product Overview

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The Schmersal PSC1-C-10-FB2 represents an advanced iteration of cable-operated emergency stop technology, featuring integrated diagnostic monitoring for critical industrial applications. This system comprises a 10-meter stainless steel tension cable ("C-10") terminated with corrosion-resistant end fittings, connected to the FB2 control unit with sophisticated self-monitoring capabilities. The FB2 designation specifically indicates dual-channel monitoring for cable integrity and contact function, exceeding basic safety requirements. Encased in an impact-resistant polycarbonate enclosure (IP65/NEMA 4 rated), the control unit houses force-guided safety relays complying with EN 60947-5-1 Annex K. Engineered for demanding environments, its stainless steel cable features a polyamide sheath for UV resistance and maintains reliable operation despite exposure to oils, coolants, and temperature fluctuations from -30°C to +70°C. The yellow cable jacket ensures high visibility across production floors, while modular design supports field expansion beyond the standard 10-meter length.

​2. Key Technical Parameters​

• ​Cable Specifications: 10m length, Ø4mm steel core with PVC-free PUR sheath (RAL 1023 yellow)
• ​Control Voltage Range: 24V DC - 230V AC (50/60Hz)
• ​Safety Contacts: 2 NC force-guided relays (10A @ 250V AC resistive load)
• ​Diagnostic Contacts: 1 NC + 1 NO (monitoring cable tension & contact status)
• ​Safety Ratings: SIL 3 per IEC 62061, PL e Cat. 4 per ISO 13849-1
• ​Activation Force: Adjustable 70-180N via spring tensioners
• ​Mechanical Life: >1,000,000 operations at rated tension
• ​Connection: M20 cable glands for 1.5mm² conductors
• ​Response Time: <150ms cable-pull-to-contact-break
• ​Shock Resistance: 30g / 11ms (IEC 60068-2-27)
• ​Special Features: Cable break detection, tamper-resistant calibration, ATEX option

​3. Primary Applications and Use Cases​
This enhanced system is indispensable for perimeter safeguarding of extensive machinery with elevated safety requirements:

• ​Automotive assembly lines​ with multi-station robotic cells requiring zone-specific emergency stops
• ​Bulk material conveyor networks​ in mining and aggregate processing plants
• ​Packaging machinery lines​ exceeding 15m where cable sag detection is critical
• ​Steel rolling mills​ with hot material transfer sections demanding thermal-resistant components
• ​Warehouse automation systems​ surrounding pallet conveyor matrices
• ​Airport baggage handling installations​ along curved transfer paths
• ​Paper converting equipment​ needing continuous web emergency braking
• ​Wastewater treatment facilities​ with chemical exposure challenges
  The dual-channel monitoring capability makes it particularly valuable in SIL 3 applications like pharmaceutical production cleanrooms and petrochemical loading stations where undetected system degradation could create hazardous situations. Its modular tensioners enable customized routing around structural obstacles.

​4. Product Advantages and Functional Benefits​

• ​Advanced Diagnostics: Continuous monitoring detects cable elongation (≥15% slack) and micro-breaks
• ​Fault Tolerance: Dual-channel architecture maintains PL e even with single-component failure
• ​Reduced False Triggers: Temperature-compensated tensioning minimizes thermal false alarms
• ​Expansion Flexibility: Supports splicing kits for total runs exceeding 50 meters
• ​TCO Optimization: Predictive maintenance alerts reduce unplanned downtime by 40%
• ​Simplified Compliance: Integrated diagnostic outputs facilitate SIL 3 validation reports
• ​Harsh Environment Survival: UV-stable PUR sheath prevents embrittlement (-40°C to +90°C)
• ​Global Certifications: UL, CSA, ATEX/IECEx options for worldwide deployment
• ​Intuitive Commissioning: Visual LED indicators (power/tension/fault) enable rapid troubleshooting
• ​Cybersecurity: Physical-only reset function prevents remote override vulnerabilities

​5. Core Functionality and Safety Integration​
Operation centers on three concurrent safety principles:

1. ​Cable Activation: Applying 70-180N force anywhere along the cable displaces dual spring-loaded tensioners
2. ​Mechanical Force Transmission: Precision linkages transfer cable movement to positively break both NC safety contacts
3. ​Continuous Monitoring: Secondary contacts detect tensioner position changes of <0.5mm
   The FB2 unit's diagnostic intelligence uses cross-comparison between main and monitoring circuits - if a contact welds or cable stretches beyond limits, diagnostic contacts change state before compromising safety function. Reset requires:
   a) Physical manual reset at control unit after cable force returns to normal
   b) Secondary confirmation of proper tension via diagnostic feedback
   The PUR-sheathed cable withstands chemical cleaning agents without degradation, while sealed rotary joints prevent ingress in washdown environments. When connected to safety PLCs (e.g., Schmersal SRB 301 or Siemens F-CPU), the dual NC outputs and dedicated diagnostic signals enable full compliance with ISO 13849-1 architectural constraints for Category 4 systems, including detection of dangerous failures within single fault tolerance time period

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Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

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