NI35-CP40-FZ3X2 35mm Inductive Proximity Sensor IP67 Stainless DC 10-30V Industrial Switch

1. ​Dual-Channel Safety Proximity Sensor Overview​

The Turck NI35-CP40-FZ3X2 is a heavy-duty inductive proximity sensor engineered for safety-critical industrial automation applications. Featuring a ​nickel-plated brass housing (NI35 suffix)​​ with ​M30×1.5 threading, this device delivers an ​exceptional 40mm sensing range (CP40)​​ for ferrous targets. Its ​dual PNP outputs (FZ3X2 designation)​​ provide independent normally open (NO) and normally closed (NC) channels meeting ​SIL 2/PL d safety standards​ per IEC 61508/ISO 13849. Certified for ​IP67/IP69K protection, it withstands high-pressure washdowns (150 bar), oils, and temporary submersion while operating across ​​-40°C to +85°C. The sensor incorporates ​cross-monitoring diagnostics​ to detect internal faults and resists vibration (10g) and electromagnetic interference. Designed for safety gates, robotic cells, and heavy machinery, it enables redundant position monitoring where single-point failure could compromise personnel safety or equipment integrity.

2. ​Critical Technical Specifications​

• ​Sensing Performance:
  Range: 40mm for steel (Fe360) ±10%
  Target: Ferrous metals ≥1mm thickness
  Repeatability: ±0.5mm
  Response Frequency: ≤100Hz
• ​Electrical:
  Outputs: 2× PNP (NO + NC independent channels)
  Voltage: 10-55V DC / 20-250V AC
  Switching Current: ≤400mA per channel
• ​Environmental:
  IP67 (IEC 60529) / IP69K (ISO 20653)
  Temperature Range: -40°C to +85°C
  Shock Resistance: 100g (IEC 60068-2-27)
• ​Safety Ratings:
  SIL 2 (PFHD 1.5×10⁻⁸/h per IEC 61508)
  PL d (Cat. 3 per ISO 13849-1)
• ​Mechanical:
  Housing: Nickel-plated brass
  Thread: M30×1.5
  Cable: PUR 2m (oil-resistant)

3. ​Safety-Critical Industrial Applications​

This sensor excels in high-risk automation scenarios requiring redundancy:

• ​Robotic Workcells: Dual-channel safety door position verification
• ​Press Brakes: Redundant guard monitoring for ANSI B11.3 compliance
• ​Automotive Assembly Lines: Safety light curtain bypass prevention
• ​Packaging Machinery: Muting sensor redundancy for high-speed lines
• ​Material Handling: SIL 2-compliant pallet presence detection
• ​Metal Stamping Presses: Dual-input clutch/brake monitoring
• ​Conveyor Systems: Emergency stop verification circuits
• ​Machine Tooling: Safety interlocks for automatic tool changers
  Its dual-channel architecture enables use in safety circuits up to PL d where single sensor failure must not compromise protection integrity, particularly in automotive stamping and robotic assembly applications.

4. ​Functional Safety Advantages​

• ​Dual-Channel Safety Architecture:
  Cross-monitored outputs detect internal faults with >60% diagnostic coverage
  Meets architectural constraints for SIL 2/PL d systems
• ​Extended Sensing Capability:
  40mm range allows detection through non-metallic barriers
  ±15mm lateral tolerance for misalignment compensation
• ​Environmental Resilience:
  Resists hydraulic fluids, coolants, and UV degradation
  IP69K withstands 1500 psi steam cleaning
• ​Diagnostic Intelligence:
  Dual-color LEDs (green/red) per channel for status indication
  Fault memory via output pulsing patterns
• ​Electrical Robustness:
  AC/DC universal voltage operation (10-55V DC/20-250V AC)
  Short-circuit/overload protection per channel
• ​Compliance Efficiency:
  Pre-validated SIL 2/PL d documentation packages
  TÜV-certified safety templates

5. ​Safety Operation & Diagnostics​

​Dual-Channel Logic:

1. ​Target Detection:
   Ferrous metal enters 40mm range → electromagnetic field disturbance
2. ​Output Behavior:
   • ​NO Channel: Closes (sinks current) on detection
   • ​NC Channel: Opens (stops sinking) on detection
3. ​Cross-Monitoring:
   ASIC compares channel response times (discrepancy >5ms triggers fault)
4. ​Diagnostic Indicators:

   ​LED State​	​Condition​
   Solid Green (both)	Normal operation
   Flashing Green (Ch1)	Channel 1 active
   Solid Red (Ch1)	Channel 1 fault
   Solid Red (Ch2)	Channel 2 fault
   Alternating Red	Cross-fault detected

​Safety Response Protocol:

• Outputs force safe state (NO open/NC closed) within 10ms of fault detection
• Undervoltage lockout below 8V DC prevents unsafe operation
• Automatic restart after fault clearance and manual reset

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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