Allen Bradley 1756-IB32/A - 32-Point 24VDC Isolated Input - Industrial Automation Rugged Hot-Swap Digital Module

The Allen-Bradley 1756-IB32/A ControlLogix® High-Density DC Input Module delivers 32-channel 24V DC connectivity for large-scale automation systems. Designed for Rockwell Automation's ControlLogix platform, this group-isolated module supports both sinking/sourcing configurations simultaneously while providing 1500V AC backplane isolation.

• Compact form factor (single-slot 1756 chassis) with point-per-wire LED diagnostics
• Embedded surge protection (±30V continuous)
• Engineered for harsh environments (-40°C to +70°C)
• Withstands 5g vibration (IEC 60068-2-6) and meets NEMA 4X/IP67 sealing standards
• Pre-configured electronic keying prevents installation errors in Studio 5000® environments
• ≤1ms timestamp resolution enables precise sequence-of-event recording

• Input Channels: 32× 24V DC (individually configurable sink/source per 8-point group)
• Voltage Range: 10-31V DC logic (ON-state min. 15V DC @ 8mA)
• Isolation: 1500V AC field-to-backplane, 250V AC channel-to-group
• Response Time: 0.5ms ON/OFF (filter-disabled), programmable debounce (0-16ms)
• Power Consumption: 120mA @ 5.1V DC backplane, 200mA max field power
• Surge Immunity: EN 61000-4-5 Level 4 (4kV/3kA line-to-ground)
• Connection System: Removable Grouped Terminal Block (GTB) with torque limit (0.6Nm)
• Certifications: UL Class 1 Div 2, ATEX II 3G, IECEx, RoHS III

• Automotive Manufacturing: Body shop clamp monitoring across 500+ I/O panels
• Warehouse Automation: High-speed photoelectric sensor networks for parcel sorting
• Pharmaceutical Packaging: Vial counter inputs on filling lines (21 CFR Part 11)
• Oil & Gas: Wellhead safety valve position feedback (API 14F Zone 2)
• Food Processing: Conveyor jam detection with washdown compatibility
• Material Handling: Palletizer layer limit switch diagnostics

Enables SIL 2 functional safety (IEC 61508) integration via Safety Partner™ modules in critical shutdown systems.

• Space Optimization: 3× higher point density vs. standard 16pt modules (32 I/O in 45mm)
• Wiring Efficiency: GTB blocks reduce termination time by 60% vs. screw terminals
• Predictive Maintenance: Per-point health monitoring detects open wires (<2mA threshold)
• Diagnostic Precision: Timestamped faults (1ms resolution) for rapid root-cause analysis
• Safety Integration: Dual-watchdog timer architecture meets CAT 3 PL e
• Energy Savings: Low-power circuitry consumes 40% less quiescent current
• Lifecycle Cost: Hot-swappable GTBs enable 2min module replacement without rewiring

• Programmable Filtering: Adjustable noise rejection per channel (0.1ms-16ms)
• Event Capture: Latch registers record transient signals down to 100µs
• Intrinsic Safety: Supports NAMUR sensors without external barriers
• Status Mirroring: Auto-replicates input data to redundant chassis
• Thermal Management: Auto-derates above 60°C with diagnostic warning
• Configuration Lock: Firmware digital signature prevents unauthorized changes
• Data Tagging: Produces UDTs for channel state/fault history in Logix Designer®

Company Information

Xiamen ZhiCheng Automation Technology Co., Ltd is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts which make sure that all jobs are perfectly completed.

We specialize in PLC, Sensors, HIM, and Transmitters.

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1) Bently nevada 2) +GF+ 3) Rosemount 4) ABB 5) Allen-Bradley 6) Foxobro

Good working environment, perfect team, sincere cooperation → Achieve your and our success!