1.Product Overview​

The ​Allen-Bradley 1794-IB16/A FLEX I/O™ Digital Input Module​ delivers robust 24V DC sensing for distributed automation systems. Engineered for Rockwell’s modular FLEX platform, this 16-channel IP67-rated module supports sinking/sourcing inputs in harsh environments (–25°C to +70°C). Its polycarbonate housing withstands high-pressure washdowns, oils, and corrosive chemicals while providing ​1500V AC backplane isolation. Integrated diagnostics include per-point LED status indicators and open-wire detection. Designed for tool-free DIN-rail mounting with ​1794-TBSH terminations, it enables rapid deployment in space-constrained cabinets. Supports ​IO-Link V1.1​ via firmware upgrade for enhanced device parameterization.

2.​Critical Technical Specifications​

​Performance-defining parameters:

• ​Input Channels: 16× 24V DC (sinking/sourcing configurable per group of 8)
• ​Voltage Range: 10–30V DC (logic 1: min 15V DC @ 6mA)
• ​Isolation: 1500V AC field-to-backplane, 250V AC channel-to-group
• ​Response Time: 1ms ON/OFF (software-adjustable filter 0–16ms)
• ​Power Consumption: 120mA @ 5V DC backplane, 50mA max per input
• ​Surge Protection: ±30V continuous overvoltage tolerance
• ​Connection: Removable 1794-TB3/TBSH screwless terminals
• ​Environmental: IP67/NEMA 6 (with sealed terminals), 95% humidity
• ​Certifications: UL 61010-1, ATEX Zone 21, IECEx, RoHS III

3.​Targeted Applications​

​Distributed sensing solutions:

• ​Food & Beverage: Washdown-proof conveyor jam sensors in hygienic zones (EHEDG)
• ​Automotive: Robotic cell safety curtain monitoring with CAT 3 PLd compliance
• ​Pharmaceuticals: Airlock door position feedback (21 CFR Part 11 audit trail)
• ​Mining: Explosion-protected limit switch inputs (ATEX/IECEx Zone 21)
• ​Material Handling: High-cycle palletizer proximity switches (1M+ operations)
• ​Water Treatment: Corrosion-resistant float switch inputs in flood-prone basins
  Ideal for replacing hardwired signals in PackML-controlled packaging lines and process skids.

​4.Competitive Advantages​

​Design innovations:

• ​Installation Speed: Push-in terminals reduce wiring time by 70% vs. screw modules
• ​Space Efficiency: 45mm width packs 16 I/O in ¼ DIN space (IP67 version)
• ​Diagnostic Depth: Open-wire detection (<1.8mA threshold) without external relays
• ​Safety Integration: SIL 2 ready with FLEX Ex™ isolation barriers
• ​Scalability: Hot-swappable module replacement via 1794-ACN/ACNR adapters
• ​Lifecycle Savings: 10M+ mechanical cycles with gold-flashed contacts
• ​Interoperability: Dual addressing (Point/IO-Link) within single network

5.​Functional Capabilities​

​Advanced operational features:

• ​Smart Diagnostics: Reports miswiring (under-voltage), overcurrent events via LED codes
• ​Filter Customization: Adaptive noise rejection for welding equipment/VFD zones
• ​Latching Function: Captures 100µs pulse signals for event sequencing
• ​Field Configurability: Set input type (NPN/PNP/NAMUR) without tools via DIP switches
• ​Firmware Upgrades: Flash memory enables IO-Link Master capability
• ​Status Mirroring: Redundant processor communication via Produced/Consumed tags
• ​Energy Monitoring: Per-channel current measurement (±5mA accuracy)

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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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