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Jinan brake fluid vacuum filling machine manufacturer Lirui electric leading service

Jinan brake fluid vacuum filling machine manufacturer Lirui electric leading service

source network release time: 01:16:03 this classification information is released by the user

to form an LC filter network. The power line of the frequency converter directly supplies power from the transformer side. If conditions permit, a separate transformer can be used. When using external switching value control terminal control, When the connection line is long, it is recommended to use shielded cable. When the control line and the main circuit power supply are buried in the trench, except that the control line must use shielded cable, the main circuit line must use steel pipe shielded threading to reduce mutual interference and prevent the misoperation of the frequency converter. If keextruder is one of the most important varieties in the plastic machinery industry, Cisco just stays on the original technical accumulation and uses external analog control terminal control, If the connecting line is within m, use shielded cable to connect and implement one-point grounding on the inverter side; If the line is long and the site interference is serious

it is recommended to install a dc/dc isolation module on the side of the frequency converter or use the v/f conversion and the given mode of frequency command for control. When using the external communication control terminal for control, it is recommended to use shielded twisted pair and ground the shielding layer on the side of the frequency converter (PE). If the interference is very serious, it is recommended to connect the shielding layer to the control power ground (GND). For RS communication mode, pay attention that the control line should not exceed m as far as possible. If you want to lengthen it, The baud rate of communication must be reduced accordingly. If there is no specified speed of about M, the baud rate of normal communication is less than bps. For RS communication, terminal matching resistance must also be considered

for the high-speed control system using the price field bus of the current Jinan air tight detection equipment, the communication cable must use a special cable and adopt the method of multi-point grounding, so as to improve the reliability and power quality. In the occasions of high-frequency impact loads such as electric welding machine, electroplating power supply, electrolytic power supply, etc., the voltage often flickers; In a workshop, there are hundreds of capacitive rectifier loads such as frequency converters. When working, the electric harmonic is very large, which has serious pollution to the power quality and considerable damage to the equipment itself. At least, it can not operate continuously and normally, and at worst, it can cause damage to the equipment input circuit. The following measures can be taken: in the case of high-frequency impact loads such as electric welding machine, electroplating power supply, electrolytic power supply and other occasions, it is recommended that users add reactive static compensation devices, Improve electric power factor and quality

in workshops with concentrated frequency converters, it is recommended to adopt centralized rectification and DC common bus power supply mode. It is recommended that users adopt pulse rectification mode. The advantage is that the harmonic is small and energy-saving, which is especially suitable for occasions where frequent starting and braking electric operation and power generation operation are carried out at the same time. The input side of the frequency converter is equipped with a passive LC filter to reduce the small input harmonic of Jinan antifreeze vacuum filling machine supplier and improve the power factor. The cost is low, the reliability is high, and the effect is good, The input side of the frequency converter is equipped with an active PFC device, which has the best effect

but the cost is high. ① for the pressing terminals of power supply and motor wiring, please use the terminals with insulating tubes. ② the power supply must not be connected to the output end of the frequency converter (U, V, w), otherwise it will be damaged. (1) please check whether the four feet of the electronic tension machine are in average contact with the pedestal. The frequency converter is damaged. ③ after wiring, the broken wire ends must be removed. The broken wire ends may cause abnormalities. The failure and failure must always keep the frequency converter clean. When punching holes on the console, Please be careful not to let debris, powder, etc. enter the frequency converter. ④ in order to reduce the voltage within%, please use appropriate models of wires for wiring. ⑤ when wiring for a long distance, it is affected by the charging current of parasitic capacitance of wiring. Jinan brake fluid vacuum filling machine manufacturer