AMIKONG EXCESS CONTROL SYSTEM PARTS
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Product Information
Product Describe
ANALOG INPUT MODULE
32 DIFFERENTIAL INPUTS
DC COUPLED
0-5 VDC OR -5-5 VDC
10 MS UPDATE RATE
12 OR 14 BITS PROGRAMMABLE
32 DIFFERENTIAL INPUTS
DC COUPLED
0-5 VDC OR -5-5 VDC
10 MS UPDATE RATE
12 OR 14 BITS PROGRAMMABLE
Technical specifications for 3721
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Product Model3721
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Product ParametersAnalog Input Module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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Estimated Shipping Size49x45.3x6.8cm
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ManufacturerInvensys
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Weight2.85 kg
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Voltage0 to 5 VDC or -5 to +5 VDC1, + 6%
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No. of Input Points32 differential, DC-coupled
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Input Update Rate10 ms
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Resolution12 bits or 14 bits programmable
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Accuracy< 0.15% of FSR from 0° to 60° C
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Common Mode Rejection-85 dB (DC – 100 Hz)
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Factory New
These are new and current items that are procured from the manufacturer. -
New No Package
These parts are new. They have not been used, but their original packaging is no longer available. -
New In Opened Package
These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged. -
New In Sealed Package
Parts are new. They have not been used and still have their original package seal intact. -
New in Original Package
These parts are new. The packages were not originally sealed by their original manufacturer.
Warranty Period & Disclaimer
Amikon is not an authorized distributor unless otherwise specified, representative, or affiliate of the manufacturer of this product. All trademarks and documents are the property of their respective owners and are provided for identification and informational.
FAQs
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What is the Triconex 3721？+The Triconex 3721 Analog Input Module is a fault-tolerant module for safety and precision-critical industrial applications.
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What type of module is the Triconex 3721?+It is a TMR (Triple Modular Redundant) differential analog input module.
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How does the TMR (Triple Modular Redundancy) system work for analog inputs?+Each input point is sensed by three independent channels. The three values are then processed using a mid-value selection algorithm to ensure data integrity. A single failure on one channel does not affect the others.
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Product
MORE INFORMATION
Overview
Manuals
Technical notes
Product Applications
Hardware Setup & Mounting
Features:
- Triple Modular Redundant (TMR) Architecture
- High-Resolution Data Conversion
- Comprehensive Self-Diagnostics
- Hot-Swappable Capability
In TMR mode,one value is then selected using a midvalue selection algorithm to ensurecorrect data for every scan.Sensing of each input point isperformed in a manner that prevents asingle failure on one channel from affecting another channel. Each analoginput module sustains complete,ongoing diagnostics for each channel.Failure of any diagnostic on anychannel activates the Fault indicator forthe module, which in turn activates thechassis alarm signal.
The 3721 Triconex Analog Input Module may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Triconex 3721 Analog Input Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The module’sFault indicator merely reports a channelfault, not a module failure—the modulecan operate properly with as many astwo faulty channels.Analog input modules support hotspare capability which allows onlinereplacement of a faulty module The analog input module requires aseparate external termination panel(ETP) with a cable interface to theTricon backplane. Each module ismechanically keyed for proper installation in a Tricon chassis.
- Emergency Shutdown (ESD):Monitors pressure/temp/feed to trigger safe plant-trip signals
- Fire & Gas (F&G) Monitoring:Connects directly to detectors; no extra trip amps needed
- Burner Management Systems (BMS):Safe startup/operation/shutdown for burners/boilers
- Turbomachinery Control:Anti-surge & safe interlocks for compressors/turbines
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Chassis Compatibility: The 3721 module is designed for use in Tricon v10.2 and later systems.
Module Insertion: Align the module with the intended slot and slide it firmly into the backplane. The mechanical keying ensures that only compatible analog input modules can be fully seated.
Hot-Swapping: For online repairs, you can perform a "hot-swap". Replace only one TMR leg at a time and wait for the system to verify the health of the new module before proceeding with further maintenance
- What Happens Next
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Get the quote now Write Email to: INFO@AMIKON.CNEmail confirmation You will get an email confirming that we have received your enquiry.Dedicated Account Manager One of our team will be in touch to confirm your part(s) specification and condition.Your quote You will receive a comprehensive quote tailored to your specific needs.Need Moore Help? Get fast and efficient help from our experienced sales or customer service teams.
- Delivery and Payment
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Delivery
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International delivery available
Same day dispatch from warehouse inventory
Warranty
All parts new original are covered by Amikon 12 month warranty
Returns
No hassle returns policy
Dedicated customer support team
Payment options
We accept Bank transfers and the following methods of payment:
For more information, please visit our dedicated payments page.
- Why Choose Amikon Limited?
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When it comes to industrial automation, reliability, speed, and trust matter. At Amikon Limited, we go beyond just supplying parts — we deliver confidence.
- ● Extensive Inventory Reach: Nearly 1 million automation parts at your fingertips, including legacy and obsolete models.
- ● 20+ Years of Expertise: Trusted by engineers, project managers and government companies worldwide for our professional service.
- ● Quality You Can Trust: Each unit is strictly inspected by the warehouse staff to ensure product quality
- ● Fast Global Shipping: We help you minimize downtime with express logistics worldwide.
- ● 1-Year Warranty Available: Peace of mind with every purchase backed by one year warranty guarantee.
Whether you're maintaining legacy systems or building future-ready projects, Amikon Limited is your dependable partner in precision and performance.
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