Product Details
The Triconex 3721N (part number 7400243-015N) is a high-precision analog input module designed for signal acquisition in Tricon safety and control systems. Featuring 32 differential, DC-coupled channels, this module conditions analog field signals with high fidelity, supporting flexible voltage input ranges and fast data conversion routines for critical industrial applications.
Signal Processing and Resolution
The module accepts differential voltage inputs across selectable ranges of 0 to 5 VDC or -5 to +5 VDC (with a +-6% tolerance margin). Signal processing is digitized using programmable 12-bit or 14-bit resolution, achieving an accuracy of better than 0.15% of full scale range across ambient temperatures from 0 deg C to 60 deg C with a 10 ms channel update rate.
System Interfaces
For integration and diagnostic communication within the control network, the 3721N incorporates dedicated onboard interfaces, including MECHATROLINK and 100Base-TX Ethernet ports, facilitating high-speed data transmission between control racks and monitoring nodes.
Specifications
| Parameter | Specification |
|---|---|
| Model | 3721N |
| Part Number | 7400243-015N |
| Brand | Triconex (Invensys) |
| Product Type | Analog Input Module |
| Input Channels | 32 differential, DC-coupled |
| Input Voltage Range | 0 to 5 VDC or -5 to +5 VDC (+-6%) |
| Input Update Rate | 10 ms |
| Resolution | Programmable 12-bit or 14-bit |
| Accuracy | < 0.15% of FSR (0 deg C to 60 deg C) |
| Communication Ports | MECHATROLINK, Ethernet (100Base-TX) |
| Weight | 1.24 kg |
Frequently Asked Questions
Q: What input voltage ranges are supported by the Triconex 3721N module?
A: The module supports differential voltage ranges of 0 to 5 VDC or -5 to +5 VDC with a +-6% margin.
Q: Can the conversion resolution on the 3721N analog input module be configured?
A: Yes, the module features programmable resolution, allowing configuration for either 12-bit or 14-bit operation.
Q: What communication ports are available on the 3721N module?
A: The module is equipped with MECHATROLINK and 100Base-TX Ethernet communication ports.
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 Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.