| 摘要 |
The system comprises a breaker(10), a switch(20), an operation sensing lamp(30), a temperature sensor(50), a temperature controller(40), a temperature sensing switch(60), a relay circuit(70), a magnet switch(120) and a heater control switch(140). The breaker(10) breaks the power source when over-current flows. The switch(20) is manipulated by an user to operate the system. The operation sensing lamp(30) displays the operation state according to the switch(20). The temperature sensor(50) senses temperature of the casting shop or the hot runner. The temperature controller(40) compares the temperature signal from the temperature sensor(50) with a reference to generate the control signal. The temperature sensing switch(60) operates by control signal from the temperature controller(40).
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