Description
The TRICONEX 3721 is a Triple Modular Redundant (TMR) Analog Input Module for Triconex safety systems, providing 32 differential DC-coupled channels for precise voltage signal acquisition in safety-critical applications like oil/gas and power plants. It employs mid-value selection across three independent channels to ensure fault tolerance and data integrity.
Product Parameters
This module accepts 0-5 VDC or -5 to +5 VDC inputs (±6% range), with 12/14-bit programmable resolution, <0.15% accuracy (0-60°C), 10 MΩ input resistance, and 10 ms update rate. It features common mode rejection >85 dB (DC-100 Hz), overrange protection to 150 VDC/115 VAC continuous, and current mode support (0-20 mA via 250 Ω shunt).
TRICONEX 3721
Datasheet Overview
The datasheet highlights onboard diagnostics (PASS/FAULT/ACTIVE/FIELD LEDs), leg-to-leg isolation of 420 kΩ typical, normal mode rejection (-3 dB at 23 Hz), and power-off resistance of 140 kΩ. Weighing 1.36 kg with yellow color coding, it suits harsh environments with SIL 3 certification.
Country of Origin
Manufactured in the United States by Triconex for safety instrumentation standards.
Usage Instructions
Insert into Tricon chassis slot, connect field signals to differential terminals ensuring polarity, and wire power from chassis backplane. Program resolution/range via TriStation 1131 software, apply power, check diagnostic LEDs, and validate inputs through system diagnostics for integration into SIS loops.
Common Q&A
- Q: Channel count and type?
A: 32 differential, DC-coupled analog inputs.
- Q: Voltage range flexibility?
A: Selectable 0-5 VDC or bipolar ±5 VDC.
- Q: Resolution options?
A: 12-bit or 14-bit, user programmable.
Similar Models
-
- 3720 (non-differential analog input).
- 3708 (16-channel high-density AI).
- 3723 (universal analog input).
- 3511 (digital input companion).
- 3671 (thermocouple input module).
At Newplcdcs, we specialize in providing high-quality spare parts for Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC). Our comprehensive product portfolio includes parts from approximately 20 leading brands, such as ABB, Bently Nevada, Honeywell, GE, Yokogawa, Allen Bradley, Foxboro, Ovation, Hima, Emerson, Triconex, Woodward, ICS Triplex, Bachmann, and Schneider. This focused expertise allows us to offer in-depth solutions in the automation sector, setting us apart from many competitors and ensuring we deliver the most advanced and reliable products to our clients.
Contact Information
Frequently Asked Questions
Is our price competitive?
Newsplcdcs collaborates with over 50 countries worldwide. as a leading supplier in china, we can provide significant discounts to customers based on market demand.
What is the warranty period?
We offer a standard one-year warranty for all new and original items.
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We primarily utilize carriers such as fedex, dhl, ups, bre, etc. if you have an account with any of these carriers, you can arrange the shipping yourself. additionally, we offer free shipping to china freight forwarders.
What is our delivery time?
Typically, delivery takes around 1-3 days after receiving the advance payment. for items with a quoted lead time, delivery will occur as per the specified lead time.
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Our packaging process involves multiple layers of protection. initially, the product is placed in its original box, sealed with a label. then, we add a layer of bubble wrap to safeguard against collisions during transportation. finally, all products are securely packed in sturdy boxes for further protection.
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