Rockwell-automation 1794-IF8IH FLEX I/O 8 Isolated Input HART Analog M Manual de usuario descargar pdf (Pagina 24)

24 FLEX I/O Isolated Input HART Analog Module

Publication

1794-IN115C-EN-P - April 2009

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 at 50 Hz

>60 dB at 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

Input resistance 249 Ω ±1%

Absolute accuracy 0.1% Full Scale @ 25 °C

Accuracy drift with

temperature

(1)

0.4% Full Scale for 0 °C…55 °C

Calibration required Factory calibrated

Can be calibrated in field when necessary

Overload, max ± 32 mA continuous

Indicators 1 red/green power/status indicator

Isolation voltage 120V (continuous), Basic Insulation Type

Type tested at 1000V ac for 60 s, between User power to

system, channel to system, and channel to channel

Flexbus current external

input

(2)

5V DC 80 mA

24V DC 190 mA

Power dissipation, max 4.8 W @ 31.2V DC

Enclosure type rating None (open-style)

Terminal block screw torque Determined by installed terminal base

Wire size Determined by installed terminal base

FLEX I/O 8-input Isolated HART Module - 1794-IF8IH

Attribute Value

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Rockwell-automation 1794-IF8IH FLEX I/O 8 Isolated Input HART Analog M Manual de usuario Pagina 24

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