Method for operating an emergency brake unit for a motor-driven tool, monitoring unit, and emergency brake unit

A monitoring unit for monitoring a state of an emergency brake unit for a motor-driven tool, wherein the emergency brake unit has an actuator with an actuation element and at least one electrical energy storage unit, which is electrically coupled to the actuation element via an electrical switching element, in such a way that the actuation element is configured to be selectively supplied with electrical energy stored in the energy storage unit by actuating the switching element, the monitoring unit comprising:

• at least one state sensor which is designed to detect an energy storage unit state parameter (Z1) which characterises a state of the energy storage unit and/or to detect an actuation element state parameter (Z2) which characterises a state of the actuation element,
• a storage unit, on which at least one selected from the group consisting of an energy storage unit threshold value (S1) and an actuation element threshold value (S2) is stored, which limits a respectively assigned standard range,
• a computing unit, which is designed to compare the energy storage unit state parameter (Z1) detected by the state sensor with the energy storage unit threshold value (S1) and/or to compare the detected actuation element state parameter (Z2) with the actuation element threshold value (S2), and
• a communication interface for triggering a blocking signal.