Delta VFD-V inverter maintenance
Model: VFD037V43
Failure phenomenon: boot running jump fault display "CF3"
Inspection results: the specification of the internal circuit of the inverter is abnormal, check the input supply voltage, normal after re boot. The investigation of current detecting element static imbalance caused by Holzer. Normal under the Holzer component of the GND should be below the 10mV, the CF1, CF2,, CF3 failure of the three Holzer components which are sure to have a Holzer component output on the GND should be more than 10mV or higher. The replacement of the Holzer components will be able to eliminate the fault. If you do not have the model Holzer components, available in another two of the common, but the current high frequency conversion operation.
Processing: replace the model Holzer components.
Delta inverter fault phenomenon
OCC AC motor driver to detect the output side of the abnormal sudden increase of the over current generation to check the motor rated and the current drive is matched
OV AC motor driver to detect the internal DC high voltage side of the phenomenon to check whether the input voltage and the AC motor drive in the rated output voltage range, and to monitor whether there is a breakthrough voltage generation
OH AC drive to detect the internal temperature is too high, more than the standard check whether the temperature is too high
Lv AC motor driver internal DC voltage side is too low to check whether the input supply voltage is normal
OL1 internal electronic thermal relay protection action to check whether the motor overload
OL2 motor load is too large to check whether the motor load is too large
HPF.2 control hardware protection circuit abnormal CC (current clamp) hardware protection circuit abnormal
HPF.3 control hardware protection circuit abnormal OC hardware protection circuit abnormalities
HPF.4 control hardware protection circuit abnormal OV hardware protection circuit abnormalities
When the external BB multi function input terminal (MI1-MI6) set this function, the AC motor driver stop output clear signal source "BB" disappeared immediately to check the current AC motor drive and motor ocR acceleration in screw loosening
OCD deceleration in the excessive current deceleration time is too long to check whether the U-V-W to the motor wiring insulation
When the external EF EF terminal is closed, the AC motor driver to stop output fault sources according to the "RESET" key to EF1 multi function when the external input terminal (MI1-MI6) set emergency stop when the AC motor driver to stop output fault sources according to RESET: "you can
CF1 IC internal memory data write abnormal send field maintenance
CF2 internal memory IC data read out abnormal press RESET button to reset the parameters to the factory setting
CF3.3 AC motor driver detects abnormal U- phase electric detector, send field service
CF3.4 AC motor driver detects abnormal V- phase electric flu detector, send to plant maintenance
CF3.5 AC motor driver detects abnormal W- phase electric flu detector, send to plant maintenance
CF3.6 AC motor driver detect line abnormal DC voltage (DC-BUS) detect line anomaly, send plant maintenance
CF3.8 AC motor driver detect abnormal temperature sensor line, send a field maintenance
GFF ground protection circuit action
CFR automatic acceleration and deceleration mode failure AC motor drive is suitable or appropriate
CE- communication disorders to check the communication signal is connected (RJ11)
PcodE CcodE software protection start display CcodE send field maintenance
PcodE for password lock
Lc low current check load current
CEF external counter to arrive at the set value, the external abnormal error check external counter signal
Delta inverter fault occurred above please contact Jia Hongwei
Jia Hong Wei repair service hotline: 0755-28916839, 13640994287 Shaw