F30004 — Power unit: Overtemperature heat sink AC inverter

F30004 is raised when the temperature of the power unit heat sink exceeds the permissible limit value. The manuals describe the fault identically across the G115D, G120, G120C, G120XA, G130, G150, S120 and S150 under the title "Power unit: Overtemperature heat sink AC inverter"; in the short fault tables of the G115D and G120C instruction manuals it appears simply as "Converter overtemperature". The condition is detected in the Power Module of the affected inverter, and the drive stores the measured heat sink temperature as the fault value in r0949, so the number you read there tells you how hot the heat sink actually was.

• Cooling is insufficient or a fan has failed.
• The power unit is overloaded.
• The ambient temperature is too high.
• The pulse frequency is set too high.

1. Check whether the fan is running.
2. Check the fan elements.
3. Check that the ambient temperature is within the permissible range.
4. Check the motor load.
5. If the set pulse frequency is above the rated pulse frequency, reduce it — the entry for this fault points to p1800 for this.

• The drive writes the heat sink temperature into r0949 as the fault value.
• Read the value as a decimal number; its resolution is 0.01 °C (the manuals print the resolution as "1 bit = 0.01 °C").

• r0949 — read the fault value here: for F30004 it contains the heat sink temperature, interpreted as a decimal number in steps of 0.01 °C.
• p1800 (pulse frequency setpoint) — use it to lower the pulse frequency if the check shows it is set above the rated pulse frequency.

The drive trips with OFF2: pulses are suppressed, the motor coasts to a standstill, and the fault must be acknowledged before the drive will start again. The heat sink must first have cooled down, because This fault can only be acknowledged after the alarm threshold for alarm A05000 has been undershot. Once the temperature is back below that threshold, acknowledge the fault and restart the drive.