1.Product Overview​

The ​Allen-Bradley 1756-IF16 ControlLogix® Analog Input Module​ provides high-precision signal acquisition for industrial process control. Designed for Rockwell's ControlLogix platform, this 16-channel module supports configurable voltage (±10V, 0-10V) and current (0-20mA, 4-20mA) inputs with ​24-bit delta-sigma ADC resolution. Featuring ​Channel-to-Channel Isolation​ (250V AC) and 1500V AC backplane isolation, it eliminates ground loops while withstanding EMI/RFI interference (EN 61000-6-2). Its robust aluminum housing operates at ​​-40°C to +70°C​ with NEMA 4X/IP67 protection (using 1756-TBNH terminals). Embedded diagnostics include open-wire detection, over-range alerts, and timestamped data for predictive maintenance integration in Studio 5000® environments.

2.​Critical Technical Specifications​

​Key performance benchmarks:

• ​Input Ranges: ±10V, 0-10V, 0-20mA, 4-20mA (software-selectable per channel)
• ​Resolution: 24-bit ADC with ±0.05% FSR accuracy @25°C
• ​Sample Rate: 1ms/channel (all channels scanned in 16ms)
• ​Isolation: 250V AC channel-to-channel, 1500V AC field-to-backplane
• ​Power Consumption: 850mA @ 5.1V DC backplane, 30mA max per sensor loop
• ​EMC Compliance: EN 61326-1 (50V/m RF immunity), EN 61000-4-5 Level 4 (4kV surge)
• ​Filtering: Programmable 50/60Hz noise rejection (>120dB attenuation)
• ​Calibration Drift: <±50ppm/°C over full temperature range
• ​Certifications: UL Class 1 Div 2, ATEX Zone 2, IECEx, RoHS III

3.​Targeted Applications​

​Precision process monitoring:

• ​Chemical Processing: Reactor temperature/pressure profiling via RTDs/thermocouples
• ​Pharmaceuticals: Bio-reactor pH monitoring with 21 CFR Part 11 audit trails
• ​Water Treatment: Turbidity/chlorine level sensing in SCADA-controlled plants
• ​Energy Production: Wind turbine vibration analysis using IEPE sensors
• ​Food & Beverage: Pasteurization temperature validation (EHEDG-compliant)
• ​Automotive Testing: Dyno cell strain-gauge measurement for SIL 2 safety systems
  Enables closed-loop control for critical processes requiring ≤0.1% signal integrity.

​4.Competitive Advantages​

​Operational differentiators:

• ​Diagnostic Depth: Channel-level wire-break detection (<1.5mA threshold)
• ​Zero-Drift Stability: Auto-calibration via onboard voltage reference
• ​Safety Integration: SIL 2 compliant (IEC 61508) with redundant diagnostics
• ​Configuration Flexibility: Mix voltage/current inputs within one module
• ​Space Efficiency: 16 channels in single-slot footprint (75mm × 87mm)
• ​Data Richness: IEEE 754 floating-point values with 1µs timestamps
• ​Lifecycle Economy: Hot-swappable terminals (1756-TBCH) reduce MTTR by 70%

5.​Functional Capabilities​

​Advanced process integration:

• ​Predictive Scaling: Auto-ranging detects sensor failures beyond 20.5mA/10.5V
• ​Alarm Engineering: Configurable high/low/wire-break thresholds per point
• ​Noise Immunity: Synchronous sampling eliminates 60Hz harmonic distortion
• ​CIP Safety™: Supports safety analog signals via Producer-Consumer tags
• ​Floating Ground Tolerance: ±30V common-mode voltage rejection
• ​Burnout Detection: 250µA current sourcing identifies 4-20mA sensor failures
• ​Data Logging: Stores 512 event buffers with millisecond-resolution SOE records

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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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