Rockwell Automation 1771-IFF/A INSTL.INSTR FAST ANALOG INPUT - Manual (Page 18)

Publication 1771-IN046B-EN-P - December 2003
18 Fast Analog Input Module
Specifications
Description Value
Inputs per module 16 single-ended; 8 differential low level
Module Location 1771 I/O chassis - 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 1.0% of full scale range at 25°C
Linearity +1 LSB
Repeatability +1 LSB
Isolation Voltage Tested to 850V dc for 1s
Input overvoltage protection
35V maximum (voltage mode)
8V maximum (current mode)
Input overcurrent protection
(current ranges) 30mA
Common mode voltage +35V
Input impedance >10 megohms (voltage ranges)
250 ohms (current ranges)
Common mode rejection 80db, dc - 120Hz
Current requirements 500mA at 5V dc from I/O chassis backplane
Power dissipation Backplane: 2.5W maximum; Inputs: 2.5W maximum
Thermal dissipation 17 BTU/hr maximum
Unscaled BCD and binary output
to processor 0000 to 4095 for polar ranges (0-5V, 1-5V 0-20mA, and 4-20mA)
-4095
10
to +4095
10
for bipolar ranges (+5V, +10V,+ 20mA)
Engineering units sent to
processor +9999
10
with selectable scaling
Fastest internal scan rate 8 channels in less than 2ms (depending on number of
oversamples, number of channels, and active features)
Environmental Conditions
Operational Temperature IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
0 to 60°C (32 to 140°F)
Storage Temperature IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal
Shock): -40 to 85°C (-40 to 185°F)
Relative Humidity IEC 60068-2-30 (Test Db, Unpackaged Nonoperating
Damp Heat):
5 to 95% noncondensing