​1.Product Overview​

The ​Allen-Bradley 1769-1F8 8-Channel Fail-Safe Input Module​ provides certified safety integration for Rockwell Automation’s CompactGuardLogix™ 5370 systems. Designed for SIL 3 (IEC 61508) and PL e (ISO 13849-1) applications, it features ​eight independently monitored safety inputs​ with ​dual-channel differential signal processing​ to detect field-wiring shorts/opens. Its rugged DIN-rail-mountable housing (IP20 rated) supports ​​-25°C to +55°C operations​ with integrated galvanic isolation (300V AC) between channels and backplane. The module’s neon-yellow housing provides instant visual safety identification, while ​embedded diagnostics​ include real-time cross-wire detection and sensor voltage monitoring (±0.5% accuracy). Configurable via Studio 5000® Safety Partner Edition.

2.​Critical Technical Specifications​

​Safety-critical parameters:

• ​Input Type: ​24V DC sinking​ (IEC 61131-2 Type 1)
• ​Safety Integrity: ​MTTFd​ 150 years / ​HFT​ 1 (SIL 3) / ​DCavg​ 99%
• ​Response Time: ​​≤12ms​ (including 5ms internal filtering)
• ​Sensor Supply: 8x ​24V DC​ (±10%) / ​120mA total​ (short-circuit protected)
• ​Fault Detection: Open-circuit (≤2kΩ) / short-to-ground (±0.5mA leak)
• ​Isolation: ​300V AC​ channel-to-channel / ​500V AC​ channel-to-bus
• ​EMC Immunity: 30V/m RF / 4kV ESD (EN 61000-6-2/4)
• ​Connectors: Removable 16-pin screw terminal (0.5–1.5Nm torque)

3.​Targeted Applications​

​Mission-critical safety systems:

• ​Automotive: Robotic cell E-stop chains (ISO 10218 compliance)
• ​Press Lines: Two-hand control monitoring (EN ISO 13850)
• ​Conveyor Systems: Emergency pull-cord initiation (ASME B20.1)
• ​Pharma Isolators: Bio-decontamination cycle door interlocks
• ​Energy: Wind turbine nacelle access platform sensors
• ​Food Processing: Washdown-area safety mats (IP69K proxies)
• ​Chemical: Reactor pressure-trip threshold monitoring

4.​Competitive Advantages​

​Engineered safety innovations:

• ​Cross-Circuit Detection: Diagnoses >99% of field wiring faults within 15ms
• ​Predictive Maintenance: Warns of contact degradation via ​contact resistance monitoring​
• ​Zero False Trips: ​5–23mA wetting current​ prevents contact oxidation failures
• ​Lifecycle Savings: ​25-year service life​ exceeds standard modules by 2.5x
• ​Cybersecurity: Signed firmware validation (IEC 62443 Level 3)
• ​Space Efficiency: 25mm wide (50% slimmer than redundant relay solutions)
• ​Commissioning Time: Auto-addressing cuts startup by 90%

5.​Functional Capabilities​

​Advanced safety diagnostics:

• ​TÜV-Certified Logic Solvers: ​Embedded fault injection testing​ per IEC 61508
• ​Channel Independence: Complete isolation enables ​individual channel disable​
• ​Dynamic Behavior Monitoring: Tracks contact bounce duration (>1ms logging)
• ​Synchronization: ​​±250μs timestamp alignment​ for event sequencing
• ​Programmable Behaviors:
  • Single/dual-channel voting
  • Muting/supervisory circuits
  • Automatic test pulsing (0.5s interval)
• ​Health Reporting: Stores last 32 faults with microsecond timestamps
• ​STO Integration: Direct Safety Torque Off (STO) triggering via CIP Safety™

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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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