Allen-Bradley 2711-B5A20 PanelView 550 HMI Display

The Allen-Bradley 2711-B5A20 PanelView 550 Ethernet standard operator terminal delivers a 5.5-inch monochrome LCD display with keypad and touch input for local HMI control in industrial panels. The display is monochrome LCD in blue mode with a 256 x 128 pixel resolution and a 120 x 60 mm active area, illuminated by a long-life LED backlight rated at 100,000 hours. It accepts 18–30 V DC input (24 V nominal) and draws up to 18 W. Memory includes 170 KB of application runtime and 240 KB of nonvolatile RAM, with ATA memory card support, and it features a battery-backed real-time clock. The keypad uses a stainless-steel domed membrane with 10 function keys (F1–F10) and can withstand about 1,000,000 actuations. Communications include EtherNet/IP plus an RS-232 printer port for local data output. This unit is refurbished with firmware revision FRN 4.46 and is part of the PanelView 550 family of standard operator terminals, designed for rugged machine and process interfacing in industrial environments.