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The Allen-Bradley 1771-HSN is a Series B PLC 5 IMC 120 Servo Controller Module, designed for the 1771 platform, used extensively in industrial applications requiring precise control and coordination. It requires a plug-in memory cartridge, either 1771-HM or 1771-HMA, and features a maximum input frequency of 250 KHz along with +/- 10 Volt DC Analog Command outputs. With a size of 3.5 x 6.5 x 2 inches and weighing 2.2 lbs, this module installs into a single slot of a 1771 I/O chassis, drawing a backplane current load of 1.7A and achieving an update period of 2ms per axis, making it ideal for high-speed processes. The inclusion of 1771-WA and 1771-WB wiring arms facilitates module replacement without disconnecting wiring, while its robust construction supports operating conditions of 0 ‚ 60 °C and 5 ‚ 95% noncondensing relative humidity.