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Summary of basic debugging steps of S120 driver
2022-07-07 02:39:00 【AAA_ Automation Engineer】
S120 Summary of basic debugging steps of the drive
One 、 Rectifier cabinet commissioning |
DC busbar measurement before power on
Measure the insulation resistance of DC busbar to ground : One is very small to the ground, thousands of ohms , But never short circuit ; DC interphase resistance is infinite , After changing the probe, the characteristic resistance of the diode is very small ;
24V Busbar measurement : The ground cannot be zero (24V Right on the ground 7.2M,24V Negative to ground 5.1 o );
Voltage measurement of rectifier cabinet
Incoming voltage measurement of rectifier incoming cabinet ( The deviation is positive or negative 10%)
Measure the phase between the incoming voltage of the rectifier incoming cabinet and the firing voltage of the precharge circuit breaker ( The phase should be the same ), Phase measurement of incoming voltage of rectifier incoming cabinet and other rectifier incoming voltage ( The phase should be the same );( The voltage with the same phase is 0, Phase different voltage 690V)
Be careful : The multimeter should be in the AC voltage range , Don't get me wrong ! |
The pre charging circuit breaker of rectifier cabinet is on fire and K4 Measure the resistance value of the ignition resistance of the precharge contactor ( Notice the resistance
files , The resistance value of the same phase is zero , The resistance value of the same phase is not infinite );
Test the closing and opening logic
High voltage power failure , The closing coil of the incoming circuit breaker is removed X27 terminal , Short circuit several rectifier cabinets X9 Of 3、4 End
Sub precharge completion signal
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