1756-OB32/A - 32-Point 24VDC Isolated Output - Industrial Rugged Hot-Swap

Product Specification

​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

​

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 !!!