Triconex 3721 Analog Input Module New Surplus
Industrial automation does not wait for lead times. The Triconex 3721 is a input module that we keep on the shelf in Shenzhen — real inventory, ready to ship. No. of Input Points: 32 differential, DC-coupled | Isolated Points: Yes | Input Update Rate: 10 ms. Every unit functionally verified before packing. 12-month warranty.
Technical Specifications
| Voltage | 0 to 5 VDC or -5 to +5 VDC, + 6% |
|---|---|
| Type | TMR, AI |
| 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° to 60°C |
| Input Resistance (load) | 10 MΩ (DC), min. |
| Power-Off Resistance | 140 kΩ (DC), typical |
| Common Mode Rejection | -85 dB (DC - 100 Hz) |
| Common Mode Range | -12V to +12V peak |
| Leg-to-Leg Isolation | 420 kΩ, typical |
| 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 |
| Manufacturer | Triconex |
| Model / SKU | 3721 |
✓ Ships within 24 hours | ✓ 12-Month Warranty | ✓ Worldwide Delivery
Detailed Product Information
Genuine Parts Verification
100% genuine Triconex — not clones, not knockoffs. Manufacturer label and serial number. Authorized sourcing with full traceability. Beware of counterfeits flooding the market.
Troubleshooting Guide
Most failures are not the module. Check: (1) Correct slot? (2) Backplane power in spec? (3) Connectors fully seated? (4) System event log — it tells you what happened. Contact us before RMA — we often solve issues remotely.
Compatibility Check
The Triconex 3721 is for Triconex platforms. Verify: firmware revision, available slot, power budget. Send a photo of your existing label — we confirm compatibility within 4 hours.
Real Inventory
The 3721 is physically in Shenzhen — not virtual, not drop-shipped, not sourced after order. 10,000+ modules across 20+ brands. What you see ships today.
What This Module Does
The Triconex 3721 handles 0 to 5 VDC or -5 to +5 VDC, + 6% in your architecture. Engineered for Triconex platforms with proprietary design that clones cannot match.
Specifications
| Parameter | Value |
|---|---|
| Voltage | 0 to 5 VDC or -5 to +5 VDC, + 6% |
| Type | TMR, AI |
| 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° to 60°C |
| Input Resistance (load) | 10 MΩ (DC), min. |
| Power-Off Resistance | 140 kΩ (DC), typical |
| Common Mode Rejection | -85 dB (DC - 100 Hz) |
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