​1.Product Overview​

The ​Allen-Bradley 1756-IB32/A ControlLogix® 32-Point DC Input Module​ delivers high-density digital signal acquisition for industrial control systems. Designed for Rockwell’s flagship platform, this module supports ​32-channel 24V DC sinking/sourcing inputs​ grouped into ​four isolated banks​ (8 points each). Its ruggedized housing (-40°C to +70°C) features NEMA 4X/IP67 protection with ​removable terminal blocks (1756-TBCH)​. Integrated diagnostics include per-channel LED status, electronic keying, and ≤1ms timestamping for precise event sequencing. Studio 5000® enables millisecond-filter adjustments (0–16ms) and predictive maintenance alerts for mission-critical applications.

2.​Critical Technical Specifications​

​Precision engineering parameters:

• ​Input Type: 32× sinking/sourcing (selectable per 8-point bank)
• ​Voltage Range: 10–31V DC (ON-state: 15V min @ 8mA)
• ​Isolation: 300V AC bank-to-bank / 1,500V AC field-to-backplane
• ​Response Time: ≤1ms OFF→ON / ≤5ms ON→OFF (software-adjustable)
• ​Power: 120mA @5.1V backplane; 25mA/point max
• ​Surge Immunity: ±30V continuous (EN 61000-4-5)
• ​Termination: 16-point 1756-TBCH screw terminal (14–22 AWG)
• ​Environmental: 5g vibration / 30g shock (IEC 60068-2)
• ​Certifications: UL 61010-1, ATEX II 3G, SIL 2 (IEC 61508)

3.​Targeted Applications​

​Large-scale industrial automation:

• ​Automotive Assembly: Robotic weld cell limit switch monitoring (500+ points/line)
• ​Warehousing: High-speed parcel sorter photoelectric sensor networks
• ​Pharmaceutical: Vial counter inputs with 21 CFR Part 11 compliance
• ​Oil & Gas: Wellhead valve status in API 14F Zone 2 areas
• ​Food Processing: Conveyor jam detection (IP69K washdown terminals)
• ​Material Handling: Palletizer layer-completion sensing
• ​Power Plants: Turbine lube oil pressure switches (SIL 2-rated)

4.​Competitive Advantages​

​Operational superiorities:

• ​Channel Density: 32 inputs in single-slot footprint (industry-leading space efficiency)
• ​PointFault™ Technology: Detects open/short circuits in <2ms per channel
• ​Safety Integration: SIL 2 compliance for E-stop chains without relays
• ​Hot-Swap Terminal Blocks: Replace wiring without power-down (≤5 minutes)
• ​EMC Resilience: ±6kV surge protection without suppressors
• ​Lifecycle Cost: 100k+ mating cycles (3× standard modules)
• ​Data Richness: 1μs event logging for sequence-of-events root cause analysis

5.​Functional Capabilities​

​Advanced diagnostics & control:

• ​Adaptive Filtering: 0.1–16ms noise rejection per bank
• ​Latch-on-Transient: Captures signals as brief as 100μs
• ​Thermal Derating: Auto-alerts at >60°C ambient
• ​Redundant Mirroring: Syncs data to backup controllers via produced tags
• ​Force/Lock Functions: Override inputs for maintenance via Studio 5000®
• ​Intrinsic Safety: Direct NAMUR sensor support (Ex ia/ib)
• ​Load Visualization: Real-time per-point state tags on HMIs
• ​Firmware Security: Signed updates prevent tampering

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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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