1774-RP3

The Allen-Bradley 1774-RP3 programmable controller uses I/O modules in the processor-resident local I/O chassis with up to 32 points per module. The unit is programmed to scan the processor-resident local I/O synchronously to the program scan. The I/O modules communicate with the unit expanders over the backplane. Note that the master or expander controller combinations support time sharing on the backplane. The 1774-RP3 programmable controller's backup system contains up to two hardware components. Note that the component does not back up the I/O in the processor-resident local chassis. The users should not install the I/O in the processor-resident local chassis of the backed up system. The programmable controller's design and construction provide a well-planned layout that is essential for proper installation.

Ensure that the 1774-RP3 programmable controller is always placed in the appropriate storage or operating conditions. The operating temperature should be between 0 and 60 degrees Celsius and the ambient storage temperature range is between -40 and 85 degrees Celsius while the relative humidity range is 5% to 95%, non-condensing. By ensuring that the unit is stored within the proper ambient conditions, the system lasts longer and ensures maximum productivity. Ensure that the 1774-RP3 programmable controller is stored and operated separately from other equipment and away from the plant walls. This ensures that the controller will be air-cooled. To allow proper cooling, it is important to mount the I/O chassis horizontally and allow 153 millimeters of space above and below the chassis. To protect the unit, install it in the proper enclosure. This keeps environmental contaminants like oil, moisture, and dust away.