Features:
The analog input - 8 channel module for the Series II Remote Terminal Unit provides eight input channels, each capable of converting an analog input signal to a digital signal for use as required by your application.
The AI-1 Analog module provides two input ranges. The default range is 4 to 20mA with user data scaled so that 4μA corresponds to a count of 0 and 20mA corresponds to a count of 32760 with each 1000 counts representing 0.5mA. A link on the rear of the module selects 4-20mA or 0-20mA for all channels.
Input protection for the module is sufficient to guarantee operation with reduced performance with up to 1500V common-mode. The module provides electrical isolation of externally generated noise between field wiring and the backplane through the use of optical isolation.
- 8 Analog inputs
- 12-Bit Resolution
- 3kV Field to Logic Isolation
- Isolated DC Output For Loop Power
- 0-20 or 4-20 mA Current Inputs
- 2ms Scan Rate
- 0-5 or 1-5V Voltage Inputs (requires factory modification)
- AI-1-1 (Analog Input - 8 channel, 12 bit resolution - c/w 24V output for field loops)
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Product specifications: |
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General
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Input Current Ranges
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4 to 20mA and 0 to 20mA |
| Input Voltage Ranges |
1 to 5V and 0 to 5V * |
| Calibration |
Factory calibrated to 5μA |
| Update Rate |
2 msec (all eight channels) |
| Absolute Accuracy |
0.1% full scale + 0.1% reading |
| Resolution |
12 bit (no sign bit) |
| Common Mode Voltage |
1500 Volts |
Linearity
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<1 Least Significant Bit |
| Isolation |
3000 Volts RMS between field and logic |
| Common Mode Rejection |
>70 dB at DC; >70 dB at 60 Hz |
| Cross-Channel Rejection |
>80 dB from DC to 1 kHz |
| Input Impedance |
250 ohms (Current input) or 100 K ohms* (Voltage input) |
| Input Filter Response |
2 kHz |
| Output Power |
24VDC @ 400mA Isolated (10W) |
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Environmental
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| Operating Temperature |
-20°C to 70°C / -4°F to 158°F |
| Storage Temperature |
-40°C to 85°C / -40°F to 185°F |
| Operating Humidity |
5 to 98% RH non-condensing |
