SINAMICS V20 I/O extension module I/O interface: 2 DI, 2 relay SINAMICS V20 I/O extension module to increase the number of inputs and outputs on the SINAMICS V20, 400 V converter. The module can be easily installed on the converter and provides two additional digital inputs and two relay outputs for the converter. This means that the converter can now have the following inputs and outputs: 2 analog inputs, 4 digital outputs, 1 analog output. The module has connection ports on the front and rear and can be used together with other accessories for SINAMICS V20 - such as the Smart Access web server module, the BOP and the BOP interface. This new option extends the functionality of SINAMICS V20 converters. It can be used, for example, for multi-pump control, where one V20 can control a maximum of four pumps. SINAMICS - simply my drive.