| 摘要 |
PURPOSE:To provide a circuit to actuate only one control relay against two or more selective signals for preventing from concurrent selection of a plurality of units to be controlled for the elimination of sneak circuit or error actuation. CONSTITUTION:Control auxiliary relay Sl is energized when No. 4 auxiliary relay A is energized by pushing switch BSl, No. 2 auxiliary relay B detecting to stop feeding to bus bar BSX when No. l auxiliary relay AL is detecting. With separating switch, relay A, B are de-energized. Nextly, No. 3 auxiliary relay C is energized by pushing switch BSa. Relay C is de-energized when relay Sl, AL are de-energized with energizing relay A, the control auxiliary relay Sa being energized with energizing relay AL, B to stop feeding to BSX. In this case, even the other switch is pushed, no electricity is fed to BSX with feeding only to relay S2 since the relay B is energized. |
