Allen Bradley 1756-IB16D is a 16-point diagnostic DC digital input module for ControlLogix chassis. It accepts 24V DC discrete signals, supports open-wire detection, configurable input filtering and change-of-state event capture, with LED channel indicators and backplane isolation, suited for critical industrial applications requiring advanced fault diagnostics.
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1756-IB16D
Allen Bradley
The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules — a 16‑point 10‑30V DC sinking diagnostic discrete input module purpose‑built for Allen‑Bradley 1756 ControlLogix PLC automation control systems — collects DC digital field signals, performs per‑point fault diagnostics and converts field switch status into backplane‑compatible digital data for PLC logic processing in industrial automation applications. Designed for discrete manufacturing, material handling, water‑wastewater treatment, petrochemical processing, and critical process industries, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules integrates DC signal conditioning circuitry, group‑to‑backplane optical isolation, on‑board diagnostic logic, backplane interface circuitry, multi‑channel status LED indicators and configurable input filter logic, ensuring reliable digital signal acquisition and point‑level fault detection across all operating conditions.
The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules accepts 10‑30V DC nominal 12/24V DC sinking field input signals, supports open‑wire fault detection, change‑of‑state timestamp function, connects to 1756 ControlLogix chassis backplane, works with compatible ControlLogix processors and 20‑pin removable terminal blocks, and operates across a wide industrial temperature range of 0 °C to +60 °C. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules carries industrial EMC compliance certification for heavy‑duty workshop environments, fully complying with UL, CE and relevant international industrial control equipment standards. Whether deployed for local cabinet signal acquisition, safety‑related signal monitoring, distributed remote I/O application or spare‑part replacement for legacy automation systems, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules delivers the dependable diagnostic‑capable 24V DC discrete input capability that high‑reliability ControlLogix automation systems demand.
Part Number | 1756-IB16D |
Manufacturer | Allen Bradley |
System Compatibility | Allen‑Bradley 1756 |
Country of Origin | USA |
Product Condition | 100% New & Original |
Operating Temperature Range | 0 °C to +60 °C (32 °F to +140 °F) |
Lead Time | 2-3 business days after payment confirmation |
Warranty | 1 year |
Shipping Carriers | DHL, FedEx, UPS, TNT, EMS |
Contact:Cheryl Qi |
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The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules stands out from comparable discrete input modules in several key areas.
High‑density 16‑point diagnostic DC sinking input design. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules provides 16 DC sinking input channels with built‑in per‑point diagnostics within one ControlLogix slot, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules saves valuable cabinet rack space while adding field‑fault monitoring capability.
Built‑in open‑wire diagnostic detection. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules supports open‑wire fault detection for each input channel, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules can alert control system to broken field wiring without extra external sensing devices.
Change‑of‑state timestamp and diagnostic latching support. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules offers timestamp for signal transitions and diagnostic latching function, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules improves event traceability for troubleshooting and safety‑oriented applications.
User‑configurable multi‑option input filter function. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules supports multiple selectable filter time settings, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules suppresses field electrical noise and contact bounce for stable signal reading.
Group‑based electrical isolation. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules provides 250V continuous isolation between two input groups and ControlLogix backplane, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules reduces interference propagation from field DC circuits to PLC internal circuitry.
Channel‑by‑channel LED status indication. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules features individual LED indicators for every input channel, technicians can quickly check on‑off and fault status of each connected field device of the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules without additional measuring instruments.
Native ControlLogix backplane integration. As a factory‑original diagnostic I/O module of Allen‑Bradley 1756 series, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules directly plugs into 1756 chassis and works with matching removable terminal blocks, configured via RSLogix 5000 / Studio 5000 software without conversion adapters.
Factory Diagnostic DC Signal Acquisition. Diagnostic‑capable 24V DC sinking discrete input module within Allen‑Bradley 1756 ControlLogix PLC systems, the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules collects status signals from PNP pushbuttons, limit switches, safety devices and relay auxiliary contacts while monitoring field wiring health.
Safety‑related Machine and Conveyor Control. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules acquires safety‑circuit feedback, limit‑switch and safety‑device signals for conveyor and machinery systems where broken‑wire detection is required.
Water‑Wastewater Treatment Plant Critical I/O System. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules monitors pump, valve and safety auxiliary feedback contacts with open‑wire diagnostics for important water‑process automation cabinets.
Legacy Diagnostic‑type ControlLogix System Spare Replacement. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules is stocked as spare replacement unit for existing diagnostic‑input‑based ControlLogix automation installations.
Industrial Automation Turnkey Project High‑reliability Field Signal Interface. The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules serves as standard diagnostic DC discrete input interface for safety‑focused ControlLogix‑based automation solutions.
The Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules holds the following international safety and compliance approvals:
• UL listed — North‑American industrial control equipment safety approval.
• CE certification — European industrial control equipment safety and EMC compliance.
• C‑Tick marked — EMC compliance for Australian and New Zealand markets.
• Class I Division 2 certified — Suitable for installation in specified hazardous classified locations.
All modules supplied are 100% new original Allen‑Bradley parts. Every Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules unit is functionally tested before dispatch, packed in professional anti‑static packaging, and covered by a one‑year warranty from the date of delivery.
Get the Allen Bradley 1756-IB16D with fast worldwide delivery — in‑stock units ship within 2‑3 business days of payment confirmation.
• Email: chen@htechplc.com
• WhatsApp / Phone: +86-181-5013-7565
• Shipping carriers: DHL, FedEx, UPS, TNT
Why buy from us:
• 100% new and original Allen‑Bradley 1756 series parts including the Allen‑Bradley 1756‑IB16D ControlLogix Digital I/O Modules
• Every product tested before shipment
• Professional anti-static packaging
• One‑year warranty on all units
• Free online quotes and 24/7 technical support
• Competitive pricing with fast global delivery