An elevator drive configured to control power to an elevator motor includes a plurality of first (upper) inverter switches and a plurality of second (lower) inverter switches. The processor is configured to provide a control signal to control operation of the inverter switch. A first signal buffer between the processor and the inverter switches is configured to selectively prevent any control signal from turning on any of the inverter switches when the motor should not receive power. A second signal buffer between the processor and the inverter switch is configured to: selectively bypass the first signal buffer; preventing any control signal from turning on the first inverter switch; and allow a control signal from the processor to switch on the second inverter switch to provide motor braking.
一种配置成控制到电梯马达的功率的电梯驱动器包括多个第一(上)逆变器开关和多个第二(下)逆变器开关。处理器配置成提供控制信号以控制逆变器开关的操作。处理器和逆变器开关之间的第一信号缓冲器配置成当马达不应该接收功率时选择地防止任何控制信号接通逆变器开关中的任何逆变器开关。处理器和逆变器开关之间的第二信号缓冲器配置成:选择地旁路第一信号缓冲器;防止任何控制信号接通第一逆变器开关;并且允许来自处理器的控制信号接通第二逆变器开关以提供马达制动。
Elevator machine braking
电梯机器制动
09.08.2024
Patent
Elektronische Ressource
Chinesisch