Shaker frequency inverter Troubleshooting

 Frequency Sieve an ideal new efficient screening equipment, mainly used in chemical industry, light industry, food, building materials, mining, coal, metallurgy, refractory

materials, food and other industries on the material dry classification. Danfoss Drives in use due to the influence of external factors such as number of symptoms often appear

in the repair process, accumulated some fault diagnosis and treatment.

Shaker frequency inverter generally have about several troubleshooting methods below to Danfoss Drives is a brief example: When the drive fails, the protection function is stone screening machine

activated, the drive trips immediately, the motor from the operating state to stop the alarm indication red LED is lit, the LCD prompts some alarm codes or fault content. Then

you can code based on the information to analyze and judge the inverter fault coverage, if it is soft failures, power inverter can be reset. If still not back to normal, only

with manual or automatic initialization, the initialization parameter table in accordance with normal re-enter the data set. In this way, the inverter can be lighter in the case

of failure to restore normal use. If after the above operation, the inverter is still not normal, it is necessary to check the inverter according to the fault phenomena damaged

parts, replacement components or circuit boards. Troubleshooting tips must order by the drive.vibrating screen design


      (A) fault code 36, suggesting that the main power failure, the three-phase rectifier bridge modules may breakdown shorted or open.

(2) fault code 37, suggesting that the inverter fails, the IGBT module may short-circuit breakdown. IGBT module short circuit, main circuit fuse will blow. When a phase gate

IGBT module is damaged, the drive will appear overcurrent phenomenon, then respond to the IGBT module to be checked.

      (3) fault code 14, suggesting that ground fault, check the motor windings can be megger, check the cable insulation is damaged.

When the drive is running, such as frequent or overcurrent limiting alarm, immediately check the load part and IGBT module inverter is normal, if normal, then this failure is

decisive inverter board Hall magnetic compensation current sensor damage. Hall magnetic compensation current sensor is a measurement of the amount of sinusoidal and non-

sinusoidal periodic current value, can truly reflect current waveform to provide a control and protection of the drive signal. Inverter for use on most of the components for the

Swiss company LEM LA series products, the LA Series Hall Current Sensor magnetic compensation can be divided into three terminal end leads to the foot and five foot two kinds of

leads. The inverter capacity, it will affect the motherboard LA Series Hall Current Sensor Specifications magnetic compensation is not the same.