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1794-IF8IH | Allen Bradley FLEX I/O Isolated Input HART Analog Module
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ویژگی ها / Specifications
| Model | FLEX I/O Isolated Input HART Analog Module |
| Current | 0.320 A/cnt unipolar; 0.640 A/cnt bipolar |
| Condition | New & Original in Factory Packing |
| Wire size | Determined by installed terminal base |
| Wire type | Shielded |
| Resolution | 16-bits unipolar; 15-bits plus sign bipolar |
| Compatibility | HART 5 |
| Conversion type | Sigma Delta |
| Flexbus current | 80 mA @ 5V DC |
| Device supported | 2, 3, 4 wires |
| Factory Warranty | 12 Months |
| Input resistance | 249 ?1% |
| Maximum overload | 32 mA continuous, one channel at a time |
| Number of inputs | 8 single-ended, isolated |
| Wiring category? | 2 - on signal ports; 3 - on power ports |
| Absolute accuracy? | 0.1% full scale @ 25°C |
| Keyswitch position | 3 |
| Ambient temperature | 0°C Tamb 55°C (32°F Tamb 131°F) |
| IEC temperature code | T4 |
| Enclosure type rating | None (open-style) |
| Power dissipation, max | 4.8 W @ 31.2V DC |
| Indicators (field side) | 1 red/green power/status indicator |
| Thermal dissipation, max | 16.4 BTU/hr @ 31.2V DC |
| Terminal base screw torque | Determined by installed terminal base |
| Recommended terminal base unit | 1794-TB3, 1794-TB3S |
| External DC power voltage range | 19.2...31.2V DC (includes 5% AC ripple) |
| North American temperature code | T4 |
| Accuracy drift with temperature? | 0.4% full scale for 0 55 ?C |
| External DC power supply current | 190 mA @ 24V DC |
| External DC power supply voltage, nom? | 24V DC |
| Dimensions, approx. (H x W x D) with module installed in base | 94 x 94 x 66 mm (3.7 x 3.7 x 2.6 in.) |
Description / توضیحات
Specifications
Data format:
Engineering Units4
Percent of Full Scale
RAW/Proportional Count
Input current terminal:
4...20 mA (user configurable)
0...20 mA (user configurable)
0 mA output until product is configured
Normal mode rejection ratio current terminal:
>70 dB @ 50/60 Hz (4.17 Hz ADC conversion rate)
>65 dB @ 50/60 Hz (10.0 Hz ADC conversion rate)
>75 dB @ 50 Hz (16.7 Hz ADC conversion rate)
>85 dB @ 60 Hz (19.6 Hz ADC conversion rate)
Common mode rejection ratio:
>60 dB @ 50 Hz
>60 dB @ 60 Hz
Step response to 99% current terminal:
4.17 Hz conversion rate = 480 ms
10.0 Hz conversion rate = 200 ms
16.7 Hz conversion rate = 120 ms
19.6 Hz conversion rate = 101 ms
62 Hz conversion rate = 32 ms
470 Hz conversion rate = 4 ms
Calibration required:
Factory calibrated
Can be calibrated in field when necessary
Isolation voltage:
120V (continuous), Basic Insulation Type
Type tested @ 1000V AC for 60 s, between User power to
system, channel to system, and channel to channel.
NOTE:
Includes offset, gain, non-linearity and repeatability error terms.
If 24V DC is removed from the module, input resistance = 10 k .
Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring and Grounding Guidelines
Engineering Units apply to HART data only.













