| 摘要 |
PURPOSE:To eliminate completely generation of a fault due to an ON/OFF switch left unapplied or interruption in mistake at normal operation by suppressing a temperature management control signal at overload/high temperature test by the said ON/OFF switch of a temperature detection signal from a temperature sensor. CONSTITUTION:The system is operated the same as a conventional system when a control circuit 11a receives an operating mode signal so as to activate an input circuit 12, a display means 13 and a control output circuit 14 thereby executing a normal temperature management control. When a test mode signal is inputted to the control circuit 11a, the circuit 11a controls the input circuit 12, a display circuit 13 and the control output circuit according to a fixed function assembled in the control circuit 11a in advance or a control program (not shown) and a control data and also to the preset control logic so as to execute the test in excess of the temperature set range of the normal operating mode at an optional test mode and also restore easily the mode to the normal test mode. |
