Rockwell Automation 1769-IF8 Compact 1769-IF8 Analog Input Module - Manual (Page 25)

Compact I/O 1769-IF8 Analog Input Module 25
Publication 1769-IN067B-EN-P - September 2005
Input Specifications
Specification 1769-IF8
Analog Normal Operating
Ranges
(1)
(1)
The over- or under-range flag will come on when the normal operating range (over/under) is exceeded. The module will
continue to convert the analog input up to the maximum full scale range. The flag automatically resets when within the
normal operating range.
Voltage: ± 10V dc, 0 to 10V dc, 0 to 5V dc, 1 to 5V dc
Current: 0 to 20 mA, 4 to 20 mA
Full Scale Analog Ranges
(1) Voltage: ± 10.5V dc, 0 to 10.5V dc, 0 to 5.25V dc, 0.5 to 5.25V dc
Current: 0 to 21 mA, 3.2 to 21 mA
Number of Inputs 8 differential or single-ended
Bus Current Draw (max.) 120 mA at 5V dc
70 mA at 24V dc
Heat Dissipation 3.24 Total Watts (The Watts per point, plus the minimum Watts, with all
points energized.)
Converter Type Delta Sigma
Response Speed per Channel Input filter and configuration dependent. See your user’s manual.
Resolution (max.)
(2)
(2)
Resolution is dependent upon your filter selection. The maximum resolution is achieved with the 10 Hz filter selected. For
resolution with other filter selections, refer to the user manual, publication 1769-UM002A-EN-P.
16 bits (unipolar)
15 bits plus sign (bipolar)
Rated Working Voltage
(3)
(3)
Rated working voltage is the maximum continuous voltage that can be applied at the input terminal, including the input
signal and the value that floats above ground potential (for example, 10V dc input signal and 20V dc potential above
ground).
30V ac/30V dc
Common Mode Voltage Range
(4)
(4)
For proper operation, both the plus and minus input terminals must be within ±10V dc of analog common.
±10V dc maximum per channel
Common Mode Rejection greater than 60 dB at 50 and 60 Hz with the 10 Hz filter selected,
respectively.
Normal Mode Rejection Ratio -50 dB at 50 and 60 Hz with the 10 Hz filter selected, respectively.
Input Impedance Voltage Terminal: 220K
Ω (typical)
Current Terminal: 250
Ω
Overall Accuracy
(5)
(5)
Includes offset, gain, non-linearity and repeatability error terms.
Voltage Terminal: ±0.2% full scale at 25°C
Current Terminal: ±0.35% full scale at 25°C