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)
| Property Category | Specification/Value |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Line | FLEX™ I/O |
| Model Number | 1794-IB16/A |
| Module Type | 16-Channel, 24V DC Sinking/Sourcing Digital Input |
| Input Channels | 16 (Grouped in 4 commons × 4 points) |
| Input Voltage | 24V DC Nominal (10–30V DC Operating Range) |
| Input Type | Selectable Sink/Source (per group via wiring) |
| Input Current (On-State) | 8 mA @ 24V DC (Typical) |
| On-State Voltage Range | ≥ 10V DC |
| Off-State Voltage Range | ≤ 5V DC |
| Response Time | On Delay: ≤ 1 ms, Off Delay: ≤ 1 ms (Filter configurable via adapter) |
| Input Filter | Software-Selectable: 0.1/0.5/1/5/10/20 ms per group |
| Backplane Current | 5V DC: 110 mA (Max.), 24V DC: 0 mA (Field-Powered) |
| Connection Type | Removable Terminal Block (RTB) - Requires 1794-TB3/TB3S/TB3G base |
| Isolation | 250V AC Continuous (Field-to-Logic), 50V AC (Field-to-Field per group) |
| Status Indicators | Per Point: Green (Active)
Module: Green (OK), Red (Fault) |
| Diagnostics | Module Fault Reporting (via PLC), Power Loss Detection |
| Ingress Protection | IP20 (Base-Mounted Module) |
| Safety Certifications | SIL 2 (IEC 61508), UL Class I Div 2, ATEX Zone 2, CE, c-UL-us |
| Operating Temperature | -20°C to +60°C (-4°F to 140°F) |
| Storage Temperature | -40°C to +85°C (-40°F to 185°F) |
| Vibration/Shock | Vibration: 5g @ 10–500 Hz
Shock: 30g @ 11 ms |
| Housing Material | Polycarbonate (UL94 V-0) |
| Communication | Requires FLEX I/O Adapter (e.g., 1794-AENT/AENTR EtherNet/IP™) |
| Configuration Software | Studio 5000 Logix Designer® or RSLogix 5000 |
| Point Density | 16 points per module |
| Compliance | RoHS, REACH, IEC 61131-2 |
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.
more about us , u can view our official web:http://www.zcsensors.com/follow us :
1)https://www.facebook.com/Sensors-and-transmitters-1883785301860678/?ref=aymt_homepage_panel&boosted_auto_open=BOOSTED_PAGELIKE
2)https://www.linkedin.com/in/z-csensorcenter/detail/recent-activity/shares/
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.
Best Supply Brands As Following:1)Bently nevada.2)+GF+.3)Rosemount.4)ABB.5)Allen-Bradley.6)Foxobro.Good working environment, perfect team, sincere cooperation →→ Achieve u and our success !!!
Product Tags:
|
|
1794-1B16/A - 16-Point 24VDC Isolated Input - Industrial Automation Rugged Hot-Swap Digital Module Images
|
