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ABB drive selection Note: 1) The purpose of frequency conversion; constant voltage control or constant current control. 2) ABB inverter load type; such as vane pumps or positive displacement pumps, with special attention to the load performance curve, the performance curve determines the way when applied. 3) ABB inverter and load matching problem; I. Voltage […]

Method of disassembling high-speed motor 1, to determine whether the need to remove the armature Observe the motor is running between the brush and the commutator spark, the degree of sparks, (I) is without any spark. Description of carbon brushes and commutators are normal, no need to repair; (2) There are only 2 to 4 […]

PLC lithium battery replacement time and steps The company is located in: PLC stored in the user program RAM (random access memory), counters and auxiliary relays with hold function are used lithium battery protection, lithium battery life of about 5 years, when the lithium battery voltage is gradually reduced to a certain extent, PLC basic […]

If the use of thermal relay in the factory for large motor protection, it will break the big wires, that is, access to the thermal relay screw connection problems, prone to hot spots and fault points. If you do not use fuses and thermal relays, and the use of integrated motor protection to achieve, because […]