F30027 Pre-charging DC Link Time Exceeded fault in siemens drive
F30027 Pre-charging DC Link Time Exceeded fault in siemens drive indicates that the DC link capacitors failed to charge to the required voltage within the set time.
Cause
1. Input voltage too low.
2. Pre-charge resistor/contactor defective.
3. Heavy load connected during startup.
Remedy
1. Check input voltage.
2. Check pre-charge components in the power unit.
3. Disconnect DC link load during start.
Cause
1. Input voltage too low.
2. Pre-charge resistor/contactor defective.
3. Heavy load connected during startup.
Remedy
1. Check input voltage.
2. Check pre-charge components in the power unit.
3. Disconnect DC link load during start.
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