Description
🔹 Product Introduction
The Triconex 3721 is a TMR analog input module designed for Tricon safety systems. It provides 32 differential, DC-coupled analog input channels and accepts 0 to 5 VDC or −5 to +5 VDC signals. The module uses a triple-modular-redundant architecture, with three independent input channels for each field signal and mid-value selection to support fault-tolerant signal processing. The 3721 is specified for Tricon v10.2 and later systems.
🔗 Product Keyword: TRICONEX 3721 Analog Input Module
📋 Product Datasheet
| Parameter | Value |
|---|---|
| 🏷️ Brand | Triconex |
| 🔢 Model | 3721 |
| 📚 Series | Tricon Safety System |
| ⚙️ Product Name | TMR Differential Analog Input Module |
| 🌍 Place of Origin | USA |
| 📦 Product Status | New Surplus / Replacement Part |
| 📐 Dimensions | Approx. 40 × 40 × 3 cm |
| ⚖️ Weight | Approx. 1.36 kg |
| 🌐 Original Country | United States |
| ⚡ Power | Less than 12 W logic power |
The 3721 provides 32 differential DC-coupled inputs, a 10 ms input update rate, programmable 12-bit or 14-bit resolution, and typical accuracy below 0.15% of full-scale range from 0°C to 60°C. Input over-range protection is specified at 150 VDC continuous or 115 VAC continuous.
🛠️ Key Features
- ⚙️ Triple Modular Redundant (TMR) architecture
- 🔌 32 differential DC-coupled analog inputs
- 📊 0 to 5 VDC or −5 to +5 VDC input range
- 🧠 Programmable 12-bit or 14-bit resolution
- ⏱️ 10 ms input update rate
- 📡 Typical common-mode rejection of −85 dB
- 🛡️ 150 VDC continuous input over-range protection
- 🔄 Continuous channel diagnostics
- 🏭 Designed for Tricon v10.2 and later systems
- 🔧 Suitable for safety-system maintenance and replacement applications
❓ FAQ
Q: What is the Triconex 3721?
A: It is a 32-channel TMR differential analog input module for compatible Tricon safety systems.
Q: What input signals does it support?
A: The module supports 0–5 VDC and −5–+5 VDC differential inputs. It can also accommodate 0–20 mA signals when the specified shunt arrangement is used.
Q: Which Tricon systems support the 3721?
A: The 3721 is specified for Tricon v10.2 and later systems.
Q: How many input channels are available?
A: There are 32 differential, DC-coupled input points.
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