Description
Description:
The Analog Input (AI) Module, Model 3721, is designed to receive and convert variable voltage signals into digital values, transmitting these to Main Processor modules. It ensures high accuracy and data reliability through its Triple Modular Redundancy (TMR) feature, utilizing a mid-value selection algorithm. Ongoing diagnostics and hot-spare capability are available for online replacement, supporting continuous system performance. These modules require an external termination panel (ETP) and are keyed for proper installation within a Tricon chassis.
Technical Data:
Brand: Triconex
Model: 3721
- Voltage Range: 0 to 5VDC or -5 to +5VDC, ±6%
- Input Points: 32 differential, DC-coupled
- Input Update Rate: 10 ms
- Resolution: 12 or 14 bits (programmable)
- Accuracy: < 0.15% of FSR from 0° to 60°C
- Input Resistance (load): 10 MΩ (minimum)
- Power-Off Resistance: 140 kΩ (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
- Diagnostic Indicators: PASS, FAULT, ACTIVE, FIELD
- Weight: 4.7 to 6.0 lbs. (2.1 kg. to 2.7 kg.)
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