BI20-CP40-VP4X2 - 20mm Inductive Proximity Sensor - IP67 Stainless DC 10-30V Industrial Switch

​1. Heavy-Duty Dual-Output Proximity Sensor Overview​

The Turck BI20-CP40-VP4X2 is a rugged inductive proximity sensor engineered for industrial automation applications requiring redundant detection. Featuring an ​exceptionally long 40mm sensing range (CP40 suffix)​​ for ferrous metals, this device incorporates ​dual PNP outputs (VP4X2 designation)​​ for redundant signal transmission or multi-device control. Its ​nickel-plated brass housing (VP)​​ provides ​IP67/IP69K protection​ against dust, high-pressure washdowns (100 bar), and temporary submersion. Operating across ​​-40°C to +85°C, it detects standard steel targets with ​​±10% repeatability​ while resisting oils, coolants, and vibration. The M30×1.5 threaded barrel design enables robust mounting in metal processing, material handling, and heavy machinery applications where sensor redundancy enhances system reliability. Dual LED indicators provide visual status feedback for both outputs.

​2. Critical Technical Specifications​

• ​Sensing Performance:
  Sensing Distance: 40mm (Fe360)
  Target: Ferrous metals ≥1mm thickness
  Repeatability: ±0.5mm
  Hysteresis: <15%
• ​Electrical:
  Outputs: 2× PNP NO (sourcing)
  Voltage: 10-55V DC / 20-250V AC
  Current: ≤400mA per channel
  Switching Frequency: ≤100Hz
• ​Environmental:
  IP67 (IEC 60529) / IP69K (ISO 20653)
  Temperature: -40°C to +85°C
  Shock Resistance: 100g (IEC 60068-2-27)
• ​Mechanical:
  Housing: Nickel-plated brass
  Thread: M30×1.5
  Cable: PUR 2m (oil-resistant)
• ​Certifications:
  UL 508 / CE / RoHS
  SIL 2 capable (IEC 61508)

​3. Industrial Applications​

This sensor excels in demanding environments requiring redundancy:

• ​Automotive Assembly: Robotic weld gun position verification
• ​Steel Mills: Crane position monitoring near electromagnetic fields
• ​Palletizing Systems: Double pallet detection in logistics centers
• ​CNC Machining: Tool changer position confirmation
• ​Mining Conveyors: Bucket elevator position backup sensing
• ​Agricultural Equipment: Implement position sensing in high-vibration environments
• ​Packaging Machinery: Dual safety interlocks for guard doors
• ​Hydraulic Presses: Platen position redundancy systems
  The 40mm sensing range allows detection through non-metallic barriers or misaligned targets, while dual outputs enable safety-critical applications like SIL 2 safety circuits or parallel signal paths to PLCs and HMIs.

​4. Functional Advantages​

• ​Redundant Operation:
  Independent outputs for critical applications
  Either output can trigger independently
• ​Environmental Resilience:
  Resists cutting fluids, hydraulic oils, and coolants
  IP69K withstands 1500 psi washdowns
• ​Installation Flexibility:
  ±15mm lateral tolerance for target alignment
  Non-flush mountable (factor 1)
• ​Electrical Versatility:
  AC/DC universal voltage compatibility
  Short-circuit/overload protection
• ​Diagnostic Visibility:
  Dual LEDs (green) indicate output status
  Visual confirmation of both channels
• ​Mechanical Durability:
  Nickel-plated brass resists corrosion
  100g shock survivability

​5. Dual-Channel Operation & Diagnostics​

​Sensing & Output Logic:

1. ​Target Detection:
   • Ferrous metal enters 40mm range → electromagnetic field disturbance
2. ​Independent Output Control:
   • Output 1: Switches PNP on target detection
   • Output 2: Simultaneous switching for redundancy
3. ​LED Indication:
   • Solid Green (each channel): Output active
   • Off: No target/output inactive
4. ​Fault Tolerance:
   • One output failure doesn't affect the other
   • Automatic reset after fault clearance

​Safety Integration:

• ​SIL 2 Capability:
  Dual channels satisfy architectural constraints
  Diagnostic Coverage (DC) >60%
• ​Electrical Protection:
  Reverse polarity protection
  Surge suppression (EN 60947-5-2)
• ​Environmental Testing:
  500hr salt spray (ISO 9227)
  Vibration resistance: 10-55Hz @ 1.5mm amplitude

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.

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

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