| 摘要 |
PURPOSE:To make it possible to operate the unit well-balancedly either in the transient output range or in the steady-state output range of an inverter by changing over the current detection signal input from the comparator in the transient output range and in the steady-state output range. CONSTITUTION:The flowing current of a variable frequency device (inverter) 7 detected by a detecting means 16 is compared with the reference value by a comparing means 17. A control means 18 changes over the signal input coming from the comparing means 17 in the transient output range and in the steady- state output range of the variable frequency device 7 and controls the output of it. At this moment, the signal from the comparing device 17 in the transient output range is not inputted but keeps the motor operated. |
