Basic description of frequency converter for belt plant
First, daily inspection tape machine should pay attention to
1. Monitor and record the display parameters of the frequency converter man-machine interface carefully, and find the abnormity should be reflected immediately.
2. Seriously monitor and record the environmental temperature of the frequency conversion room, and the environmental temperature should be between -5 and 40 degrees centigrade. The temperature rise of the phase shift transformer shall not exceed 130 degrees centigrade.
3, summer temperature is higher, should strengthen the frequency converter installation site ventilation and heat dissipation. Make sure the surrounding air contains no excess dust, acids, salts, corrosive, and explosive gases.
4, summer is rainy season, should prevent the rain water into the frequency converter internal (such as rain, downwind, outlet into).
5. The filter screen on the door of the converter is usually cleaned once a week. If there is much dust in the working environment, the cleaning interval should be shortened according to the actual situation.
6, the normal operation of inverter, a standard thickness of A4 paper to firmly adsorbed on the door into the air filter net.
7, frequency conversion room must be kept clean and tidy, should be cleaned at any time according to the actual situation at the scene.
8, frequency conversion room ventilation, lighting must be good, ventilation, cooling equipment (air conditioning, ventilation fans, etc.) to normal operation.
Two. After the tape conveyor is stopped, the items need maintenance
1, with plastic suction nozzle vacuum cleaner thoroughly inside and outside the converter cabinet, to ensure that the equipment is not excessive dust.
2 、 check the ventilation and lighting equipment in frequency conversion room to ensure the normal operation of the ventilation equipment.
3. Check the connection between the internal cables of the converter should be correct and reliable.
4 、 check all the grounding in the converter cabinet should be reliable, no rust at the site.
5, every six months (inside) should be tightened once the frequency converter internal cable each connection nut.
6, belt conveyor inverter after a long time to stop running, you should measure the frequency converter (including phase-shifting transformers, bypass main circuit) insulation, should use 2500V trillion European table. Only when the insulation is tested can the frequency converter be started.