Analog Input Module Specifications
Model Number: 3721
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Voltage: 0 to 5 VDC or -5 to +5 VDC, + 6%
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Type: TMR, AI
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No. of Input Points: 32 differential, DC-coupled
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Isolated Points: Yes
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Input Update Rate: 10 ms
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Resolution: 12 bits or 14 bits (programmable)
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Accuracy: < 0.15% of FSR from 0° to 60°C
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Input Resistance (load): 10 MΩ (DC), min.
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Power-Off Resistance: 140 kΩ (DC), typical
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Common Mode Rejection: -85 dB (DC - 100 Hz)
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Common Mode Range: -12V to +12V peak
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Leg-to-Leg Isolation: 420 kΩ, typical
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Normal Mode Rejection:
- @ 23Hz: -3 dB
- @ 60Hz: -8 dB
- @ 120Hz: -14 dB
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Input Overrange Protection: 150 VDC/115 VAC continuous
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Current Range: 0-20 mA with 250 Ω shunt resistor
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Diagnostic Indicators: Module Status (PASS, FAULT, ACTIVE, FIELD)
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Color Code: Yellow
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