The standard EN ISO 13851 regulates the requirements for two-hand controls to minimize the risk of injury on machines with hazardous movements. A crucial component of safety calculations is the minimum distance S, which ensures that the operator cannot place body parts into the danger zone before the machine is stopped. The additional safety distance (or minimum distance) dimension C is not an independent value, but rather a part of the calculation formula for S = (K x T) + C. Here, K stands for the specified gripping speed (1,600 mm/s) and T for the overall system’s response time. C supplements this value as an additional buffer, depending on the design of the two-hand control and the existing protective measures.