Rockwell-automation 1771-IFE ANALOG INPUT MODULE Bedienungsanleitung PDF herunterladen (Seite 61)

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Publication 1771Ć6.5.115 - February 1999

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Description Value

Inputs per module 16 single-ended; 8 differential low level

Module Location 1771 I/O rack - 1 slot

Input voltage ranges (nominal)

+1 to +5V dc

0 to +5V dc

-5 to +5V dc

-10 to +10V dc

0 to +10V dc

Input current ranges (nominal)

+4 to +20mA

0 to +20mA

-20 to +20mA

Resolution 12-bit binary

12 bits plus sign on bipolar ranges

Accuracy 0.1% of full scale range @ 25

Linearity +1 LSB

Repeatability +1 LSB

Isolation Voltage Isolation meets or exceeds the requirements of UL Standard 508,

and CSA Standard C22.2 No. 142.

Input overvoltage protection

200V (voltage mode)

8V (current mode)

Input overcurrent protection (current ranges) 30mA

Common mode voltage +14.25 Volts

Input impedance >10 Megohms for voltage ranges; 250 ohms for current ranges

Common mode rejection 80 db, dc-120Hz

Current Requirements 500mA @ +5V from I/O chassis backplane

Temperature Coefficient +50ppm/

C of full scale

Power Dissipation 2.5 Watts (maximum)

Thermal Dissipation 8.52 BTU/hr (maximum)

Unscaled BCD and binary output to

processor

0000 to +4095

for polar ranges (0 to 5V, +1 to +5V, 0 to +20mA,

and +4 to +20mA)

-4095

to 4095

for bipolar ranges ( +5V, +10V, +20mA)

Engineering units sent to processor +9999

with selectable scaling

Internal scan rate

13.7ms for 8 differential inputs (no digital filtering) -add 0.3ms

for filtering

27.4ms for 16 single-ended input (no digital filtering) -add 0.3ms

for filtering

Specifications continued on next page

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