The operation of the PLC to the requirement of environmental considerations

Domestic PLC which is in use should pay attention to the following results: power supply: PLC controller on the power cord to bring trouble to save is a certain amount of resistance. Normal PLC should by 24 V dc input to the output side, when output using an external current source, should choose dc regulated power supply. Environment: to prevent erosion and explosive gas, similar chemical such as acid and alkali. Domestic PLC on environment are more dust or erosion gas conditions, PLC device can be preferable to master room is open or master cabinet. Similar to the power plant of dry slag discharge, dry ash, etc. , is the early stage of the construction more open humble abode. Vibration: should make PLC from the intense vibration source, preventing vibration frequency for 10 ~ 55 Hz repeatedly or vibration. When using no can prevent vibration condition, necessary damping measures, such as the adoption of damping rubber. Humidity: in order to protect the insulation of the PLC function, environment of absolute humidity should be less than 85% ( No condensation) 。 Temperature: temperature is 0 ~ 55 ℃, PLC controller request conditions when the device can not put a fever can big parts, drafty around the cooling time should be left. Domestic PLC is a kind of PLC is used as a light industry consumption active control facilities, normally do not demand, will be able to indirectly is used in light industry conditions. But, although as mentioned in the strong sex is higher, resistance to disturb power is stronger, but when consumption conditions too stubborn, electromagnetic trouble especially fierce, or device use not when, can form order error or calculus errors, thus wrongly output and provoked error input, this will form the facilities out of control and false action, domestic PLC which failed to abnormal operation of the PLC. Sex to progress the PLC master pieces and a range of consumer request PLC manufacturer progress facilities trouble power resistance; Another scope, the request provoked in the protection of ideas, devices, and use high attention, cooperative ability perfect treatment result, invalid to strengthen fragmentary resistance function.
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