Allen-Bradley 1746-IB16 16-Point DC Input Module | SLC 500

Allen-Bradley 1746-IB16 16-Point DC Input Module – SLC 500 Series

When a single digital input module fails on a running production line, the consequences cascade instantly: PLCs lose visibility into field devices, safety interlocks go blind, and entire automated sequences halt without warning. Unplanned downtime in discrete manufacturing can cost thousands of dollars per hour — and the root cause is often a single, irreplaceable I/O module. The Allen-Bradley 1746-IB16 is that critical link between your field sensors and your SLC 500 controller, and sourcing a verified replacement quickly is not optional — it is mission-critical.

The 1746-IB16 occupies a well-established position within Rockwell Automation’s SLC 500 modular I/O family as a 16-point, 24V DC sink (IEC Type 1) digital input module. Designed for the 1746 I/O chassis, it remains one of the most widely deployed discrete input modules in North American and global manufacturing facilities. Its longevity in the field — spanning automotive assembly, food & beverage processing, material handling, and water treatment — reflects both the robustness of the SLC 500 platform and the module’s proven reliability in demanding industrial environments.

Technical Specifications

• Catalog Number: 1746-IB16
• Series: Allen-Bradley SLC 500
• Module Type: Digital DC Input
• Number of Input Points: 16
• Input Voltage Range: 10–30V DC
• Input Current (nominal): 8 mA @ 24V DC
• Input Type: Sink (IEC Type 1)
• ON-State Voltage Min: 10V DC
• OFF-State Voltage Max: 5V DC
• Backplane Current (5V DC): 100 mA
• Isolation: 1500V AC optical isolation (field side to backplane)
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -40°C to 85°C
• Relative Humidity: 5–95% non-condensing
• Enclosure Type: Open (must be installed in 1746 chassis)
• Compatible Chassis: 1746-A4, 1746-A7, 1746-A10, 1746-A13
• Weight: Approx. 400 g

Note: All specifications are sourced from Rockwell Automation official documentation. Konmask.com does not fabricate or alter published specifications.

Key Features & Benefits

• 16 Isolated DC Inputs: Provides dense, cost-effective field device connectivity in a single slot, reducing chassis space consumption.
• IEC Type 1 Sink Input: Compatible with the vast majority of 2-wire and 3-wire PNP proximity sensors, limit switches, and pushbuttons used in global industrial installations.
• Optical Isolation: 1500V AC isolation between field wiring and the SLC 500 backplane protects the controller from field-side voltage transients and ground loops.
• LED Status Indicators: One green LED per input point provides immediate visual diagnostics without requiring a programming terminal — critical for rapid fault isolation on the plant floor.
• Hot-Swap Capable (with proper procedure): Supports module replacement in multi-slot chassis configurations following Rockwell’s documented procedures, minimizing system downtime.
• Wide Operating Temperature Range: Rated 0–60°C, suitable for both climate-controlled control rooms and harsher panel environments.
• Long Field Life: Proven 20+ year deployment history across global installations, with extensive spare parts availability supporting legacy system maintenance strategies.

Industry & Equipment Applications

• Automotive Manufacturing: Body-in-white assembly lines, robotic cell interlocks, conveyor position sensing
• Food & Beverage Processing: Filling line sensor feedback, packaging machine limit switches, CIP system status monitoring
• Material Handling & Logistics: Pallet conveyor systems, sortation equipment, warehouse AGV integration
• Water & Wastewater Treatment: Pump status monitoring, valve position feedback, level switch inputs
• Oil & Gas (Non-Hazardous Areas): Wellhead monitoring panels, pipeline valve status, compressor station I/O
• Pharmaceutical Manufacturing: Batch process equipment, clean room environmental monitoring, regulatory-compliant control systems
• Building Automation & HVAC: Legacy BAS panel upgrades, chiller plant control, air handling unit sequencing

System Integration & Compatible Parts

The 1746-IB16 is designed for seamless integration within the Allen-Bradley SLC 500 ecosystem. Compatible and commonly paired components include:

• SLC 500 Processors: 1747-L20, 1747-L30, 1747-L40, 1747-L511, 1747-L514, 1747-L524, 1747-L531, 1747-L532, 1747-L541, 1747-L542, 1747-L543, 1747-L551, 1747-L552, 1747-L553
• SLC 500 Chassis: 1746-A4 (4-slot), 1746-A7 (7-slot), 1746-A10 (10-slot), 1746-A13 (13-slot)
• Power Supplies: 1746-P1, 1746-P2, 1746-P3, 1746-P4, 1746-P5, 1746-P6, 1746-P7
• Complementary Output Modules: 1746-OB16 (16-pt DC output), 1746-OW16 (16-pt relay output), 1746-OB32 (32-pt DC output)
• Other Input Modules: 1746-IB32 (32-pt DC input), 1746-IA16 (16-pt AC input), 1746-IN16 (16-pt AC/DC input)
• Communication Modules: 1747-SDN (DeviceNet), 1747-KE (DH-485/RS-232), 1747-SCNR (ControlNet)

Contact Konmask.com to source complete SLC 500 system builds or individual replacement modules.

Our Quality Assurance Process

Every Allen-Bradley 1746-IB16 module shipped from Konmask.com undergoes a structured verification process before dispatch:

• Visual Inspection: Physical examination for damage, corrosion, bent connector pins, and label integrity
• Functional Verification: Where applicable, modules are bench-tested against known-good SLC 500 chassis to confirm backplane communication and I/O point operation
• Authenticity Check: Date codes, firmware revisions, and Rockwell Automation part markings are verified against manufacturer records
• Secure Packaging: Anti-static packaging with moisture barrier and shock-absorbing materials for international freight
• Documentation: Certificate of conformance and test report available upon request for regulated industries

How to Order

1. Submit an Inquiry: Use the contact form on this page or email support@konmask.com with your required quantity and delivery timeline
2. Receive a Quote: Our team will respond within 1 business day with pricing, availability, and lead time
3. Confirm & Pay: Approve the proforma invoice and complete payment via T/T bank transfer or other agreed method
4. Shipment & Tracking: We arrange international freight (DHL, FedEx, UPS, or sea freight) and provide full tracking documentation
5. After-Sales Support: Our technical team remains available post-delivery for integration questions

Why Choose Konmask.com?

• ✅ Specialized in Industrial Automation Components: We focus exclusively on PLC, DCS, and automation hardware — not a generalist marketplace
• ✅ Global Sourcing Network: Access to both new and refurbished Allen-Bradley inventory from verified supply chain partners worldwide
• ✅ Fast Response for Urgent Needs: Emergency sourcing support for production-down situations with expedited shipping options
• ✅ Technical Expertise: Our team includes engineers with hands-on SLC 500 and ControlLogix experience — we speak your language
• ✅ Transparent Documentation: Full traceability documentation available for quality-audited industries
• ✅ Competitive Pricing: Direct relationships with distributors and surplus dealers enable pricing advantages over traditional channels

Frequently Asked Questions

Q: Is the 1746-IB16 still in production by Rockwell Automation?
A: The SLC 500 product line has been discontinued by Rockwell Automation. However, Konmask.com maintains access to new-old-stock (NOS) and professionally refurbished units to support legacy system maintenance.

Q: What is the difference between 1746-IB16 and 1746-IB32?
A: The 1746-IB16 provides 16 input points in a single slot, while the 1746-IB32 provides 32 input points. The IB32 requires more backplane current and is suited for higher-density applications where chassis slots are limited.

Q: Can the 1746-IB16 be used with MicroLogix controllers?
A: No. The 1746-IB16 is designed for the 1746 I/O chassis used with SLC 500 processors. MicroLogix 1000 and 1100 use fixed I/O; MicroLogix 1200 and 1500 use 1762 (Micro I/O) expansion modules, which are not compatible with 1746 series modules.

Q: Do you provide a warranty on 1746-IB16 modules?
A: Yes. Konmask.com provides a warranty period on all shipped modules. Specific warranty terms are confirmed at the time of quotation based on module condition (new, NOS, or refurbished).

Q: Can you supply multiple units for a plant-wide spare parts program?
A: Absolutely. We regularly fulfill bulk orders for MRO spare parts programs. Contact us with your required quantities and we will provide volume pricing.

Q: What shipping options are available for international orders?
A: We ship worldwide via DHL Express, FedEx International Priority, UPS Worldwide, and sea freight for large orders. Delivery timelines and costs are confirmed at quotation stage.

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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691

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