Overview
The IC670ALG240 is a 16-channel analog input module designed to convert current loop inputs (0 to 25 mA) from transmitters into digital values. It supports field recalibration, customizable alarm settings, and offers diagnostic features via LED indicators.
Specifications
- Channels: 16 single-ended
- Resolution: 16 bits (unscaled)
- Input Current Span: 0 mA to 25 mA
- Converter LSB Weight: 381 NanoAmps (typical)
- Operating Temperature Range: 0 to 55°C
- Current Loop Power Supply: 20–28V nominal (10% ripple maximum)
- Current Drawn from BIU Power Supply: 251 mA maximum
- Maximum Input (Without Damage): 35 mA continuous
- Non-linearity: 1 µA or 1 LSB
- Temperature Coefficient: ±0.002% of value per degree C (typical)
- Isolation: 1500 VAC for 1 minute, 250 VAC continuous
- Common Mode Voltage: None (single-ended input)
Input & Filtering
- Input Hardware Filter: 2nd order active RC
- Filter Transition Frequency: 10 Hz
- Software Normal Mode Filter: Averaging, comb response
- Normal Mode Rejection: 25 dB (10 ms), 50 dB (20 ms)
- Common Mode Rejection: 86 dB minimum
- Input Impedance: 250 Ohms
- Open Wire Current (4–20 mA scaling): 2.0 mA typical
- Overrange: 25 mA typical
- Underrange (0–25 scaling): 0 mA minimum
Indicators & Diagnostics
-
LED Indicator:
- ON: Normal operation
- Flashing: Diagnostic mode (module not sending inputs)
- OFF: No power or fatal fault
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| Warranty | 12 Months |
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