Product Description:

The VCP20.1BUN-256DN-NN-PW operator terminal is manufactured by Bosch Rexroth Indramat as part of the VCP IndraControl Terminals series. It serves as the human-machine interface in processing lines and assembly systems, presenting machine states and accepting operator commands. The device combines a graphical display, membrane keypad, and fieldbus electronics inside a panel-mount housing, enabling direct installation on control cabinets. Its logic is handled by a Z84 microprocessor platform that provides deterministic response for industrial automation tasks.

Processing resources start with 256 kB of application memory reserved for the resident control program, augmented by 128 kB of static CMOS RAM for variable data. The Z84 CPU executes this code at 10 MHz, giving predictable cycle times for screen updates and key scanning. Operator feedback appears on an LCD module with a CCFL backlight that occupies a 240 x 128 pixels raster across a 131 x 72 mm viewable area, and characters remain legible over the stated 90° reading angle. Input is handled through 34 tactile keys arranged on the front membrane. The panel measures 160 x 300 x 3 mm, while a 152 x 196 mm mounting cutout is required so the aluminum carrier can be clamped into a cabinet. Nominal power is supplied at 24 V DC, and internal regulators distribute logic rails to the display, backlight inverter, and communication circuitry.

Electrical loading stays within a peak draw of 3.0 A during cold start when the backlight reaches full intensity, and the circuit may not exceed the 30.2 V maximum input allowed by the converter stage. The front membrane, gasket, and laminated glass give the operator side an IP54 protection rating, permitting use where splashing fluids or airborne dust are present. Data exchange with a host controller is carried over the DeviceNet fieldbus interface, reducing wiring to a multidrop trunk. The display maintains consistent contrast for status graphics and menu text during operation.