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1771-IYC
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Other Available Revisions for the 1771-IYC 1771-IYC//A
Common misspellings:
- l771-IYC
- 177l-IYC
- 1771-1YC
- 1771-lYC
- 1771IYC
The 1771-IYC thermocouple input expander module is manufactured by Allen-Bradley and it belongs to the PLC-5 thermocouple series. The 1771-IYC is built with the ability to increase the thermocouple input range for the analog input module. It is designed so that the analog input module will transfer input data words from the 1771-IYC memory to the PLC processor data table. Then by using block transfer programming, the configuration words are transferred back. To install the 17771-IYC module, it is necessary to use a single slot but it does not require an external power supply. The 1771-IYC also comes with 8 floating differential inputs which serve as thermocouple input ranges. The 8 floating differentials included in the 1771-IYC include the types B, J, E, K, S, T, and R. Further, it needs about 750 mA of backplane current load supplied at 5 Volts. The 1771-IYC also comes with a channel update that supports up to 25 milliseconds per every 8 channels. While wiring, connect to the 1771-WI wiring arm field. This will help in avoiding the need to disconnect any wires when it is necessary to replace the module at a later date. In addition to the above specs, the 1771-IYC needs a maximum power indulgence of up to 4.25 Watts. On the other side, the thermal indulgence is of about 14.5 BTU (British Thermal Unit) per hour. To install the 1771-IYC, it is recommended that the keying bands be placed between the pins ranging from 20 to 22 and 24 to 26.
The user of the 1771-IYC module can select highest and lowest temperature alerts. This is because the 1771-IYC is self-diagnosing when powered up and it can report on its own status. For instance, in case of thermocouple module failure, the user can be notified through the provided open circuit detector. By using the 1771-IYC, there will be no need for potentiometers since the 1771-IYC has the ability to calibrate offset and gain for each channel automatically. Lastly, note that the 1771-IYC is intended to be used in a dry and clean environment. The industrial environment where it is used should have a temperature between 0 and 55 degrees Celsius. This range is about 32 to 131 degrees Fahrenheit. Other conditions include 30G operating shock and also a non-condensing relative humidity of 5 to 95%.
