Allen-Bradley 1769-CJC Cold Junction Compensation Module – CompactLogix POINT I/O Series
When a thermocouple-based temperature measurement system loses its cold junction compensation reference, the entire process loop drifts into error — furnace temperatures misread, batch quality degrades, and safety interlocks may trigger on false readings. In high-stakes environments such as metal heat treatment, pharmaceutical sterilization, or food processing, even a 2°C offset can mean scrapped product or a regulatory violation. The Allen-Bradley 1769-CJC module exists precisely to eliminate this failure mode, providing a stable, hardware-level cold junction reference that keeps every thermocouple channel honest.
The 1769-CJC is a dedicated Cold Junction Compensation module within Rockwell Automation’s CompactLogix 1769 POINT I/O platform. Unlike software-based CJC corrections that rely on ambient sensor polling, this module delivers a direct, on-board hardware reference integrated at the backplane level — making it the preferred solution for OEMs and system integrators who demand measurement accuracy without compromise. As part of the globally deployed 1769 series, it benefits from Rockwell’s extensive installed base, long-term parts availability, and seamless Studio 5000 / RSLogix 5000 integration.
Technical Specifications
- Part Number / SKU: 1769-CJC
- Series: Allen-Bradley CompactLogix 1769 POINT I/O
- Module Type: Cold Junction Compensation (CJC)
- Manufacturer: Rockwell Automation / Allen-Bradley
- Form Factor: 1769 single-slot plug-in module
- Weight: approx. 40 g
- Compatibility: 1769 CompactLogix backplane systems
- Programming Environment: Studio 5000 Logix Designer / RSLogix 5000
- Certifications: CE, UL (per Rockwell Automation product documentation)
Note: Detailed electrical specifications (input range, accuracy, power consumption) should be verified against the official Rockwell Automation 1769-CJC product datasheet prior to system design.
Key Features & Benefits
- Hardware CJC Reference: On-board compensation eliminates the inaccuracies of software-polled ambient sensors, delivering a stable reference directly at the thermocouple input point.
- Seamless 1769 Backplane Integration: Plugs directly into any 1769 CompactLogix expansion slot — no external wiring, no additional power supply required.
- Improved Thermocouple Accuracy: Works in conjunction with 1769 analog thermocouple input modules to correct for terminal block temperature variations across the full operating range.
- Compact Single-Slot Design: Minimizes panel space consumption while maximizing I/O density in space-constrained control cabinets.
- Long-Term Platform Support: Part of Rockwell Automation’s widely deployed 1769 ecosystem, ensuring long-term spare parts availability and firmware compatibility.
- Studio 5000 / RSLogix 5000 Native: Fully recognized by Rockwell’s programming environments — no custom add-on instructions required.
Industry & Equipment Applications
- Metal & Heat Treatment: Furnace temperature control loops requiring ±1°C or better accuracy across multiple thermocouple zones.
- Pharmaceutical & Biotech: Autoclave and sterilization systems where temperature validation is a regulatory requirement (FDA 21 CFR Part 11, GMP).
- Food & Beverage Processing: Pasteurization, cooking, and drying lines with strict HACCP temperature monitoring requirements.
- Plastics & Rubber: Injection molding and extrusion barrel temperature control with multi-zone thermocouple arrays.
- Chemical & Petrochemical: Reactor temperature monitoring in hazardous-area control panels using CompactLogix architectures.
- OEM Machine Builders: Any machine incorporating 1769 CompactLogix PLCs with thermocouple analog input modules.
System Integration & Compatible Parts
The 1769-CJC is designed to work within the broader Allen-Bradley 1769 CompactLogix ecosystem. Commonly paired components include:
- 1769-IF4 – 4-Channel Analog Input Module (current/voltage)
- 1769-IT6 – 6-Channel Thermocouple / mV Input Module (primary companion module)
- 1769-L30ER / 1769-L33ER – CompactLogix 5370 Controllers
- 1769-PA2 / 1769-PB2 – CompactLogix Power Supplies
- 1769-ECR / 1769-ECL – End Caps (right/left) for bus termination
Always verify module compatibility with your specific controller firmware version using the Rockwell Automation Product Compatibility and Download Center (PCDC).
Our Quality Assurance Process
At Konmask.com, every Allen-Bradley 1769-CJC module we supply goes through a structured sourcing and verification process:
- Authorized Supply Chain: Sourced from verified distributors and original equipment channels to ensure genuine Rockwell Automation product.
- Visual & Label Inspection: Each unit is inspected for label integrity, catalog number accuracy, date code, and physical condition before dispatch.
- Packaging Verification: Original anti-static packaging and documentation are preserved where available.
- Traceability: Batch records maintained for enterprise and OEM customers requiring supply chain documentation.
- Warranty Support: We stand behind every part we ship — contact our team for warranty terms applicable to your order.
How to Order
- Submit an Inquiry: Use the contact form on this page or email [email protected] with your required quantity and delivery timeline.
- Receive a Quote: Our team will respond within 1 business day with pricing, lead time, and shipping options tailored to your location.
- Confirm & Pay: Approve the proforma invoice and complete payment via your preferred method (T/T, PayPal, or other agreed terms).
- Dispatch & Track: Your order ships with full tracking. Express (DHL/FedEx/UPS) and economy freight options available worldwide.
For urgent requirements or large-volume OEM orders, please call or WhatsApp: +0086 19859288691
Why Choose Konmask.com?
- ✅ Industrial Automation Specialists — We focus exclusively on PLC, DCS, and automation hardware. No generalist catalog noise.
- ✅ Global B2B Export Experience — Serving system integrators, OEMs, and MRO buyers across Europe, Southeast Asia, the Middle East, and the Americas.
- ✅ Fast Inquiry Response — Dedicated technical sales team responds within 24 hours, with spec verification support available.
- ✅ Competitive Pricing — Direct sourcing relationships allow us to offer market-competitive pricing on both spot and blanket orders.
- ✅ Reliable Logistics — Experienced in export documentation, customs clearance support, and multi-modal shipping options.
Frequently Asked Questions
- Q: What is the function of the 1769-CJC module?
- A: The 1769-CJC provides a hardware cold junction compensation reference for thermocouple input modules in the Allen-Bradley CompactLogix 1769 system. It corrects for the temperature at the thermocouple terminal block, ensuring accurate process temperature measurement.
- Q: Which thermocouple input module does the 1769-CJC work with?
- A: The 1769-CJC is primarily used with the 1769-IT6 Thermocouple/mV Input Module. Always consult the Rockwell Automation wiring and installation manual for your specific module combination.
- Q: Is the 1769-CJC a standalone module or does it require a controller?
- A: It is a companion module that must be installed in a 1769 CompactLogix backplane alongside a compatible thermocouple analog input module. It does not operate independently.
- Q: Can Konmask.com ship the 1769-CJC internationally?
- A: Yes. We ship globally via DHL, FedEx, UPS, and freight forwarders. Export documentation and commercial invoices are provided for customs clearance.
- Q: What is the lead time for the Allen-Bradley 1769-CJC?
- A: Lead time depends on current stock levels. Please submit an inquiry for a real-time availability check. In-stock orders typically ship within 2–5 business days.
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Contact: [email protected] | +0086 19859288691
