| 摘要 |
PURPOSE:To obtain the sharp clamping characteristics as well as to realize a low cost for the titled limiter circuit, by clamping the speed command value to a rated value when said command value exceeds the rated value. CONSTITUTION:When a speed command V1 is fed to a speed controller 3a from an override setting device 2, the voltage V2 of the junction point between resistors 41 and 42 is impressed to operational amplifiers 45 and 47 to be compared with positive and negative voltages V3 and V4 respectively. The voltage V2 is clamped to V3 in the case of V2>V3; while the V2 is clamped to V4 in the case of V2<=V4. Thus, the sharp clamping characteristics are obtained. |
