Analyze how to achieve the purpose of air compressor soft start
When the battery fails, the control circuit is only powered by the auxiliary. If the air compressor starts to blow at this time, the auxiliary voltage will drop below 20V due to the soft start characteristics of the air compressor of the device. Since the voltage of each contactor and relay of the control circuit is between 5.5 and 25V, the FLC may be released and the auxiliary power will not be generated. At the same time, the electromagnetic interlocking DLS is released due to insufficient suction, causing the diesel engine to stop. The power generation is stopped, the control loop is de-energized, and the phenomenon of “winding down†occurs when the air compressor is soft-started. When the battery is faulty during the operation of the locomotive, the air compressor key switch 10K should be disconnected immediately to prevent the air blower from appearing during the soft start of the air compressor, and the following methods are used to maintain the operation. Cancel the air compressor soft start short circuit FLC normally closed contact, cancel the soft start, and then close the 10K to directly start the air compressor. It is also possible to disconnect the 10K soft start command and manually hold the direct wind. Because the soft start of the air compressor is cancelled, the method of directly starting the air compressor is adopted, so the starting current is large, which has a certain influence on the commutation of the air compressor and the ring fire. This is a simple emergency response method, which should minimize the number of starts and avoid frequent starts. The top dead electromagnetic interlocking DLS and FLC, the air compressor still uses the soft start method to manually kill the DLS and FLC, so that it will not be released, so as to avoid the diesel engine shutdown and auxiliary power generation, and the 10K operation will be prevented when the traction condition is broken. When the wind is blown, the auxiliary voltage drops, causing the electric appliance to be released and suddenly unloaded, causing the train impulse phenomenon; when the wind is needed, after returning to the driver's handle, it is combined with 10K to manually hold the YC wind (because of the YC's pull-in voltage) 77V, and the soft-starting auxiliary voltage drops below about 20V, YC can not be sucked), the purpose of the soft start of the air compressor can be achieved. This method requires that the traction operation and the air compressor work alternately, can achieve the purpose of the soft start of the air compressor, and is advantageous for the operation of the air compressor motor, which is an ideal method, but the operation is complicated. Mask Machine,Automatic Mask Machine,Disposable Face Mask Machine,Flat Mask Machine,Chinese Mask Machine,Automatic Mask Machine,Disposable,Exportable Dengzhou Longyi Machinery Co., Ltd , https://www.nylongyi.com