Allen-Bradley 2711-K5A8 PanelView 550 HMI Panel

Allen-Bradley 2711-K5A8 PanelView 550 Standard Operator Terminal is a compact 5.5-inch monochrome HMI with a stainless-steel domed keypad featuring 10 function keys (F1–F10) for straightforward operator input and DH+ networking support. It uses a 5.5-inch monochrome LCD (blue mode) with a 256 × 128 pixel resolution in a 120 × 60 mm active area, and a long-life LED backlight rated around 100,000 hours. Powered from 18–30 V DC (24 V nominal) and drawing up to 18 W, the unit runs PanelBuilder32 software and stores applications in 170 KB runtime memory plus 240 KB nonvolatile RAM, with a battery-backed real-time clock. Firmware FRN 4.10 is within the supported range (1.00–4.48) for this family. The keypad is rated for about 1 million actuations, and the device provides versatile communications, including DH+ and RS-232 printer port, as well as EtherNet/IP, DeviceNet, ControlNet, Remote I/O, DH-485, and RS-232 (DH-485/DF1) options depending on configuration. This PanelView 550 terminal is suitable for indoor installations or in NEMA 12/13, 4X environments (Indoor use only) when mounted in rated enclosures, with field-replaceable battery support. Estimated shipping weight is around 6 lb, with typical packaging dimensions near 14 × 11 × 8 in.