Product Details
Product Overview
The Allen Bradley 1756-IB16DK functions as a high-performance digital DC input module within the ControlLogix platform. It provides 16 individual diagnostic input points that detect and report field-side faults, such as open wire or short circuit conditions. This module features a K-suffix conformal coating, providing an essential layer of protection against moisture, dust, and corrosive chemical vapors. We supply this unit as 100% Brand New and Original, ready for integration into mission-critical control architectures.
Technical Specifications
The 1756-IB16DK operates within precise electrical parameters to ensure logic accuracy:
| Feature | Specification |
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Product Line | ControlLogix |
| Input Type | 16 Diagnostic Inputs (Sink) |
| Nominal Input Voltage | 12-24 Volts DC |
| Operating Voltage Range | 10-30 Volts DC |
| Input Delay Time | 4ms + hardware filter time |
| Max Power Dissipation | 5.8 Watts @ 60°C |
| Backplane Current (5V) | 150 mA |
| Removable Terminal Block | 1756-TBCH or 1756-TBS6H |
| Coating | Conformal Coated (K-Version) |
Engineering Advantages
The 1756-IB16DK addresses specific industrial pain points through advanced hardware design:
-
Real-Time Diagnostics: This module identifies wire breaks and short circuits at the individual point level. This eliminates hours of manual troubleshooting by pinpointing the exact location of field-side electrical failures directly in the Studio 5000 environment.
-
Corrosive Environment Resilience: The "K" designation signifies factory-applied conformal coating. This protects the internal circuitry from "creeping" corrosion in wastewater treatment plants, paper mills, and oil refineries, significantly extending the mean time between failures (MTBF).
-
Enhanced Signal Integrity: A 4ms hardware delay combined with user-configurable software filters prevents "contact bounce" and electrical noise from triggering false logic states.
-
Flexible Maintenance: The module supports Removable Terminal Blocks (RTB). Maintenance teams can replace a faulty module without disconnecting field wiring, reducing mean time to repair (MTTR) during critical system outages.
FAQs
-
What is the significance of the 'K' in 1756-IB16DK?
The 'K' suffix indicates that the module features a conformal coating. This specialty resin layer shields the PCB from humidity and environmental contaminants, making it the standard choice for harsh or "dirty" industrial locations.
-
Does this module support "Sourcing" field devices?
No. The 1756-IB16DK is a "Sink" input module. The field device must provide (Source) the positive voltage to the module input terminals to complete the circuit.
-
Which terminal blocks should I use for this module?
The module requires either the 1756-TBCH (36-pin Cage Clamp) or the 1756-TBS6H (36-pin Spring Clamp). These must be purchased separately if you are not reusing existing blocks.
-
Can I replace a standard 1756-IB16D with this 1756-IB16DK?
Yes. The 1756-IB16DK is functionally identical to the 1756-IB16D but includes the added benefit of conformal coating. It fits the same chassis slot and uses the same I/O configuration in your PLC program.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Marshalling Cabinets in Industrial Control Systems Architecture
Industrial control system deployments rely on structured signal distribution to bridge field instrumentation with central processing hardware. A marshalling cabinet serves as the vital intermediate connection point between heavy field home-run multi-pair cables and delicate input/output (I/O) modules housed inside Programmable Logic Controller (PLC) or Distributed Control System (DCS) enclosures. By segregating field cable terminations from control hardware, engineers maintain system flexibility, safeguard controller components, and streamline commissioning workflows.
FAT vs SAT in Industrial Control Systems: Key Differences and Execution Guide
Industrial control system deployment relies on strict verification protocols to guarantee operational safety, system stability, and regulatory compliance. Commissioning complex Programmable Logic Controller (PLC) racks, Distributed Control Systems (DCS), and Safety Instrumented Systems (SIS) requires two critical milestones: the Factory Acceptance Test (FAT) and the Site Acceptance Test (SAT). Both procedures validate that system automation meets design specifications, but they occur at different stages of project execution and target distinct operational risks.
Hub vs Switch vs Router in Industrial Automation Architecture
Modern factory automation relies on reliable industrial networking infrastructure to exchange real-time field data across operational technology systems. Engineers often encounter networking hardware like hubs, switches, and routers when integrating Programmable Logic Controllers, Distributed Control Systems, and SCADA monitoring nodes. Although these devices share physical ports, they operate at different layers of the Open Systems Interconnection reference model and deliver distinct traffic management capabilities.