Rockwell-automation 1771-IL INSTL.INSTR.ISOL ANALOG INPUT Manual de usuario descargar pdf (Pagina 15)

Isolated Analog Input Module 15

Publication 1771Ć5.51 - October 1996

The following are major differences between series levels of the

1771-IL isolated analog input module.

      

Data Table Usage 8 in/8 out/12 read words/19 write

words

8 in/8 out/15 read words/37 write words

Resolution 12Ćbit binary 16Ćbit binary

Sample Time No RTS, Default 500ms; range

500ms to 3.1s in 100ms increments

No RTS, Default 50ms; range 50ms to 3.1s in 100ms increments

Calibration Mechanical adjustments for gain,

offset and zero offset.

AutoĆcalibration (offset and gain)

Zero offset and gain adjustment for each channel via programming

terminal

Accuracy 0.1% of full scale range @ 25

C Voltage: Typical Ć 0.01% of full scale range @ 25

Maximum Ć 0.05% of full scale range @ 25

Current: Typical Ć 0.06% of full scale range @ 25

Maximum Ć 0.1% of full scale range @ 25

(Includes 0.05% when using internal current resistor)

Common Mode Rejection >120 db @ 60Hz and 1K ohm source

imbalance

>150 db @ 60Hz and 1K ohm source imbalance

Normal mode rejection >120 db @ 60Hz >60 db @ 60Hz

Input Overvoltage Protection +40V peak, continuous voltage mode: 140V ac (rms) continuous;

current mode: 8V dc continuous

Backplane Current 1.3A @ +5V 1.0A @ +5V 1.1A @ +5V

Power Dissipation 6.5 Watts maximum 5.0 Watts maximum 5.5 Watts maximum

Thermal Dissipation 22.2 BTU/hr maximum 17.1 BTU/hr maximum 18.8 BTU/hr maximum

Insternal Scan Rate 500ms for 8 channels (no scaling or

digital filtering)

50ms for 8 channels (no scaling or digital filtering)

Engineering Units sent to

Processor

+9999 BCD with selectable scaling +9999 BCD with selectable scaling

+32767 binary

Agency Cerfification CSA certified,

CSA Class I, Division 2, Groups A, B, C, D certified;

UL listed

CSA certified,

CSA Class I, Division 2, Groups

A, B, C, D certified;

UL listed;

CE marked for all applicable

directives

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