Model 3301 Digital Input Module Specifications
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Points: 32, commoned
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Nominal Input Voltage: 24 V DC
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Operational Voltage Range: 15–30 V DC
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Absolute Maximum Input Voltage: 33 V DC
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Absolute Maximum Reverse Input Voltage: –0.6 V DC
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Input Delay: <10 ms, On to Off or Off to On
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TC: 6.4 ms, –3dB @ 25Hz
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Input Impedance: >30 kΩ without baseplate, ≈3 kΩ with baseplate
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Input Power:
- 0.2 W/pt @ 24 V DC
- 0.5 W/pt @ 33 V DC
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Input Threshold:
- 0–5 V DC = Off region
- 6–14 V DC = Transition region
- 15–30 V DC = On region
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Diagnostic (Loss of View): Force-to-value diagnostic (FVD), <2 ms/test
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Maximum Input Toggle Rate to Maintain Diagnostic Fault Coverage: <20/sec
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FVD Off-state Glitch:
- Duration: <2 ms
- Magnitude: ≈36% test voltage
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Output Impedance: 0–5 V DC, ≈100 kΩ
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ADC Scan Time: <1 ms for all 32 points
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Functional-to-Protective-Earth Isolation: 500 V DC, minimum
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Functional-to-Functional-Earth (Logic) Isolation: 800 V DC, minimum
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