The LiSA21 is an innovative, future-oriented control system. Its two-part design (processor board 78 x 210 x 20 mm and relay board 78 x 195 x 40 mm) allows it to be used even in the most confined spaces. The boards can be installed on top of each other, side by side, or, in small areas, separately from one another. This allows for the separation of electronic components from the mains voltage side, thereby preventing EMC-related issues. It complies with the requirements of EN 12015 (emission) and EN 12016 (immunity).

A new concept for selecting different user levels has been integrated into the LiSA21 to enable simple, secure access to the controller. This distinguishes between operators, service technicians, and the core team. Depending on the authorization selected via the encoded USB stick, specific functions within the controller can be accessed. With its interfaces such as LiSA-Bus, CAN-Open, DCP, modem, COM server, USB, and SD card, it is ideally equipped for future tasks.

The use of the latest components and the sophisticated design enable operation with minimal power consumption. Functions such as light shutdown, display shutdown, putting the inverter into standby mode, and shutting down the inverter and door drive ensure low power consumption for the entire elevator system.