Specifications

Publication 1794-SG002D-EN-P - May 2012
40 Select FLEX I/O Modules
1794-IF4I and 1794-IF4IXT Isolated Analog 4 Input Module
The 1794-IF4I and 1794-IF4IXT are input modules with channel-to-channel
isolation that work with a variety of input sensors to measure input voltage in
±10V range or input current in the 0…20 mA range. Each channel is individually
configurable for the desired input range. Use the 1794-IF4I or 1794-IF4IXT
with 2-, 3-, and 4-wire input sensor field devices.
The 1794-IF4IXT is the extended temperature version of the 1794-IF4I module.
Settings to these parameters affect all inputs set to 150 Hz, 300 Hz, or 600 Hz.
The parameters do not affect channels set at 1200 Hz.
Input resistance Current input: <100 Ω
Voltage input: >1 MΩ
Data format 16 bits, 2’s complement
Input conversion type Successive approximation
Input conversion rate 8.0 ms all channels
Normal mode rejection ratio Voltage/current terminal:
-3 dB @ 0.05 Hz
-20 dB/decade
-52 dB @ 50 Hz
-54 dB @ 60 Hz
Voltage/current terminal with Quick Step:
-3 dB @ 1.5 Hz; -20 dB/decade
-29 dB @ 50 Hz
-31 dB @ 60 Hz
Step response to 63% of FS, input Current or voltage input: 1.3 s (0.09 s with Quick Step)
Calibration None required
Dimensions (HxWxD), approx 46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in.)
94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) installed
Resolution 16 bit unipolar
15 bit + bipolar
Accuracy Current input: 0.1% Full Scale @ 25 °C (77 °F)
Voltage input: 0.1% Full Scale @ 25 °C (77 °F)
(1)
(1) Includes offset, gain, non-linearity, and repeatability error terms
IMPORTANT
Only connect either a voltage input or a current input per channel,
not both.
Isolated Analog Input Modules
Specification 1794-IF4I, 1794-IF4IXT
Voltage, input, max overload 30V, single channel, continuous
Current, input, max overload 32 mA, single channel, continuous
Analog 12 Input Module
Specification 1794-IE12