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1771-IE Wiring

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  • 1771-IE Wiring
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The Allen-Bradley 1771-IE Analog Input Module is an 8-bit module that measures the analog signals at its inputs and converts the data into 3-digit values of BCD (0-255) which are then transferred to the PC processor. Though a single-slot module, it has 8 channels, all of which are single-ended and have the same current range. This current range is factory-set but may be recalibrated to suit the operators’ requirements by selecting the input range of all 8 channels as one unit. Users may connect up to 8 devices that can sense the variables of temperature, light, pressure, and positioning status. All their inputs should conform to the single voltage current range for which the module has been calibrated.


The 1771-IE Analog Input Module can be used with any 1771 I/O structure. Being an 8-bit module means that the number of steps that it takes to divide the voltage or current range is a single part in 28; this translates to a single part of 256. It requires 400mA from the +5V DC backplane power supply and this should be calculated to the total of all the other modules in the chassis to avoid supply overload. It would, however, require a separate power supply to protect analog signals from the line transients caused by the switching of power and digital circuits which have no over-voltage protection from the external power supply.


The 1771-IF module is able to monitor all conversions and transmissions of data for errors. It would also monitor the correct levels of the +/-V DC & +5V DC voltage Should there be an error, the module would stop data transfer until the error is corrected then resume processing. Connecting the module may be done in any slot on the I/O chassis and if users want to reduce noise, they may group the analog modules together. Take note to avoid placing them close to high-voltage modules. Keying can be done between pins 4 and 6; or pins 26 and 28. Use Belden 8761 cables or similar cables for connecting devices to the 1771-IF module’s field wiring arm and always protect the sensitivity of the module by correct shielding. Do not confuse the signal return wire with a cable shield wire.

Other Automation PLC-5

SKU 2170137  UPC 0799705806245

Analog Input Module AB PLC5 1771IE 1771-I

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PLC-5 1771-IE
Weight: 2 Lbs
Dimensions: 10"x12"x2"In
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Weight: 2 Lbs
Dimensions: 10"x12"x2"In
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