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Triconex 3721 Analog input module Brand new in Stock

19 in stock

Manufacturer: Triconex
Product No.: 3721
Product Type: Analog Input Module
Condition: Brand New
Payment: T/T, Western Union
Weight: 1.36 kg
Shipping port: Xiamen
Warranty: 12 months

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An Triconex 3721 analog input (AI) module comprises three independent input channels. Each input channel receives variable voltage signals from each point, converts them to digital values, and transmits the values to the three main processor modules on demand. In TMR mode, a mid-value selection algorithm selects one value to ensure correct data for every scan.

Sensing of each input point prevents a single failure on one channel from affecting another channel. Each analog input module continuously conducts diagnostics for each channel. The activation of the Fault indicator for a module, in response to any diagnostic failure on any channel, subsequently activates the chassis alarm signal. It's essential to note that the module's Fault indicator only reports a channel fault, not a module failure, as the module can operate properly with up to two faulty channels.

Analog input modules support hot-spare capability, allowing online replacement of a faulty module.

Triconex 3721 Product Specifications:

Voltage: 0 to 5VDC or -5 to +5VDC (selectable using TriStation software)
Type: TMR (Triple Modular Redundant)
No. of Input Points: 32 differential, DC-coupled
Isolated Points: Yes
Input Update Rate: 10 ms
Resolution: 12 bits or 14 bits (programmable)
Accuracy: < 0.15% of FSR from 0°C to 60°C
Input Resistance (load): ≥ 10 MΩ (DC), minimum
Power-Off Resistance: ≥ 140 kΩ (DC), typical
Common Mode Rejection: -85 dB (DC to 100 Hz)
Common Mode Range: -12V to +12V peak
Leg-to-Leg Isolation: 420 kΩ, typical
Normal Mode Rejection: -3 dB @ 8Hz, -17 dB @ 60Hz, -23 dB @ 120Hz
Input Overrange Protection: 150 VDC/115 VAC continuous
Current Range: 0-20 mA with 250 Ω shunt resistor
Diagnostic Indicators: Module Status - PASS, FAULT, ACTIVE, FIELD
Color Code: Yellow

For more detailed parameters of Triconex 3721 Analog input module, please read the PDF: 3640E

More TRICONEX Modules:

Payment: T/T, Western Union.

Shipping port: Xiamen.

Lead time: Typically 1–3 working days after payment confirmation (subject to stock).

Worldwide delivery: We ship industrial automation parts to customers around the world. Freight is quoted with your RFQ.

F.A.Q.

Common questions about quotes, shipping, warranty and returns

Click Request a Quote on the product page and send us the part number, required quantity, and destination country. Our sales team will reply with current availability, pricing, and estimated delivery time.

In-stock items are normally prepared after payment and order confirmation. Most orders are dispatched from our warehouse in China, although the shipping location may vary depending on current stock.

Yes. We ship industrial automation parts to customers worldwide. Shipping cost and transit time depend on the destination, package weight, product size, and local import requirements.

We commonly use DHL, FedEx, UPS, and other international courier services. The carrier can be selected according to the destination, delivery speed, shipment size, and customer requirements.

Our products are generally covered by a 12-month warranty. Eligible products may also be returned under our 30-day refund policy. Please contact our team before returning any item to confirm the applicable terms and return instructions.