Siemens 6ES7621-6BD01-0AE3 PLC Control Module

Siemens 6ES7621-6BD01-0AE3 is a membrane keypad module that functions as the operator interface for the SIMATIC C7-621 AS-i control system, providing a compact, durable input surface for machine operators within an automation setup. This part is associated with the C7-621 family and is designed to accompany the C7-621 AS-i controller components, enabling local command entry and navigation on compatible hardware. Common applications include industrial machinery and packaging or material-handling lines where a rugged, low-profile keypad is needed to interact with the C7-621-based control architecture. The 6ES7621-6BD01-0AE3 designation identifies a replacement keypad assembly (membrane keypad) used in Siemens’ C7-621 AS-i ecosystem, and it is typically sourced through distributors and service providers as a spare part for established C7-621 installations. The accessory is described in Siemens manuals and product sheets as the membrane input component for the C7-621 interface, reinforcing its role as a dedicated operator input device within the broader SIMATIC C7-621 system.