2results about How to "Reduced availability" patented technology

This utility model discloses a modular intelligent narrow-body frequency converter cabinet system, comprising: a narrow-body cabinet with internal module installation space, air inlet, and air outlet; a modular backplane system integrating a main circuit busbar and a control / auxiliary power bus; at least one standard functional module with standardized mechanical and electrical interfaces, pluggably installed in the cabinet and connected to the backplane system for implementing specific power conversion or control functions; and an intelligent thermal management system including a temperature sensor, an adjustable-speed fan, and a fan controller, capable of adjusting the fan speed according to temperature information to control airflow within the cabinet. This utility model, through modular design and intelligent thermal management, achieves high system integration, excellent maintainability, flexible configuration capabilities, and efficient heat dissipation, making it suitable for high-power frequency converter applications in industrial drives, new energy, and other fields.

A safety device of an elevator capable of suppressing a decrease in availability of the elevator. A host node (63) monitors whether a traveling speed of a car (42) reaches an excessive speed level based on a signal from an upper reference position switch (45), a signal from a lower reference position switch (46), and information related to a traveling direction of the car (42). As the excessive speed level, a first speed level and a second speed level are set to the host node (63). The second speed level is a lower level than the first speed level. The host node (63) applies the second speed level to upward traveling of the car (42) in a case where an upper communication failure is detected, and applies the second speed level to downward traveling of the car (42) in a case where a lower communication failure is detected.