The motor acceleration dω/dt depends on the acceleration torque, and the frequency change rate of the inverter during start-up and braking is set according to the requirements of the variable frequency speed control system. If the motor moment of inertia and the motor load change rate are preset acceleration or deceleration, there may be a phenomenon that the acceleration torque is insufficient, resulting in the motor stalling, that is, the motor speed is inconsistent with the inverter output frequency, resulting in the inverter. Over current or over voltage. Therefore, it is necessary to reasonably set the acceleration and deceleration time according to the motor inertia and the actual load, so that the frequency change rate of the inverter can be coordinated with the motor speed change rate. The way to check if this setting is reasonable is to select the acceleration and deceleration time settings according to experience. If the overcurrent of the inverter occurs during the startup process, the acceleration time can be extended appropriately; if the inverter overcurrent occurs during the braking process, the deceleration time can be extended appropriately; on the other hand, the acceleration and deceleration time should not be set too long. If the time is too long, it will affect the production efficiency, especially when the variable frequency speed control system is frequently started and braked.
DIN Electric Bell
The electric bell is suitable for audible signaling for intermittent use only in domestic and commercial installations.We are manufacturer of Low Voltage Electrical in China, if you want to buy Electric Bell,Patent Intermittent Electric Bell, please contact us.
Korlen electrical appliances also produces other low voltage electric appliances, for example, overload protector which can do over-current & short circuit protection. The overload protector is popular at customers.
Low Voltage Electrical,Electric Bell,Patent Intermittent Electric Bell
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjthermalrelay.com