Product Overview

• 1756-IB16I is a 16-point isolated digital input module for ControlLogix series
• Provides individually isolated channels for high noise immunity and safety applications
• Supports 10–30VDC bidirectional input with channel-level diagnostics

• Lifecycle status: Active (current production)

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Core Features

• 16 fully isolated input channels (500VAC isolation between channel and backplane)
• Bidirectional polarity support (sink/source compatible) with reverse polarity protection
• Software-configurable digital filter (0.2ms–10ms) for contact bounce suppression
• Channel-level diagnostics: open/short circuit, overvoltage, reverse polarity detection
• Hot swap capable (replace module during system operation without shutdown)

• SIL 2 safety certified (IEC 61508) with ATEX/IECEx explosion-proof approvals

Technical Parameters

• Brand: Allen Bradley / Rockwell Automation
• Part Number: 1756-IB16I
• Series: ControlLogix 1756
• Input Points: 16 channels, individually isolated
• Rated Voltage: 24VDC (operating range 10–30VDC)
• Input Current: 4mA @24VDC
• Logic Threshold: ON≥10VDC; OFF≤5VDC
• Response Time: ≤1.5ms (no filter)
• Backplane Current: 100mA @5VDC; 3mA @24VDC
• Power Dissipation: 5.1W max @60°C
• Isolation Voltage: 500VAC RMS (channel to backplane)
• Operating Temperature: 0°C~60°C
• Weight: 0.5kg
• Termination: 1756-TBCH / 1756-TBS6H (separate)

• Certification: UL, CE, CSA, RoHS, SIL 2, ATEX, IECEx

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Applications

• Safety-related control systems (SIL 2 requirements)
• High-noise industrial environments (motor control, power panels)
• Critical signal monitoring (sensors, limit switches, safety interlocks)
• Process control and machinery automation
• Retrofit and upgrade of existing ControlLogix systems

Our Advantages

• Original new and refurbished options available
• Full functional testing and quality assurance
• Competitive pricing and fast global delivery
• 12-month warranty with professional technical support