Delta SVG300A43A-11, Quick Star

Page: 126 / 127

5-2
Panel display Description Solution
Output current exceeded safe
operating range during
operation
Check whether the power supply voltage is normal
Check whether the system model number matches with
the machine
Check whether the phase-locked frequency matches the
power supply frequency
Check whether the CT wiring is correct and in the correct
phase sequence
Check whether the system temperature is within operating
range
The level of input voltage
exceeds the preset level
Check whether the input voltage is within the rated voltage
range, and monitor for voltage surges.
While in operation, overvoltage
on the high-voltage end of the
internal DC voltage is detected.
Check whether the input voltage is within the rated voltage
range, and monitor for voltage surges.
Overvoltage while turned off.
Voltage detection hardware
circuit error
Check whether the input voltage is within the rated voltage
range, and monitor for voltage surges.
The level of input voltage
unbalance exceeds the preset
level
Check whether the power supply voltage is normal
Turn off the power and check whether the input contacts
are tightened. Tighten again if necessary
Restart the system. If the problem persists, send for repair
The level of phase-locked
frequency beats of the input
voltage exceeds the preset
level
Check whether the power supply voltage is normal
Turn off the power and check whether the input contacts
are tightened. Tighten again if necessary
Restart the system. If the problem persists, send for repair
While in operation, a voltage
lower than the rated voltage on
the internal high DC end is
detected.
Check whether the power supply input voltage is normal
Check whether there has been a sudden overload
While turned off, a voltage
lower than the rated voltage on
the internal high DC end is
detected.
Check whether the power supply input voltage is normal
Check whether there has been a sudden overload
IGBT temperature exceeds the
protection level
Check whether the ambient temperature is too high
Check for foreign objects in the heat sink and whether the
fan is spinning
Check whether there is enough room for ventilation