| 摘要 |
<p>PURPOSE:To inexpensively and easily obtain a confirming signal by inserting a current detecting means such as CT (Current Transformer) into a power source line between a power relay and a control object. CONSTITUTION:A current detecting means CT 18 is inserted into an alternating current power source supplying line between a power relay 12 and an air conditioning device 17 and the confirmation to the operation of the power relay 12 is eliminated as a response confirming signal. Consequently, for example, when 17:30 is obtained, a schedule timer control supervising part 11 outputs a control signal to an electromagnet part 13 of the power relay 12, a contact 14 is closed, and the power source is supplied from an alternating current power source 16 to the air conditioning device 17. When a current flows at the circuit, CT 18 detects the current, and therefore, the detecting signal is outputted to the schedule timer control supervising part 11 and an alarm is outputted. Thus, the confirming signal is easily obtained.</p> |
