Supply to Gate Driver Not Enabled

What does F00026 mean?

The gate driver, which controls the inverter's power transistors (IGBTs), is not enabled. This critical internal fault prevents the inverter from generating output voltage and can be indicative of a hardware issue with the gate drive board or a synchronization problem within the safety state machines. This renders the drive inoperable.

• Internal control board failure preventing the gate driver supply from being activated.
• Low or missing auxiliary power supply (e.g., 24VDC or 15VDC) to the gate driver circuits.
• Detection of an overtemperature condition in the power stack, causing gate driver suppression.
• Fault in the gate driver circuit itself (e.g., component failure on the gate driver board).
• Incorrect or damaged fiber optic link (if used) between control board and gate driver.

Click steps to track your progress.

1. 1

   Verify the presence and stability of auxiliary control voltages (e.g., 24VDC, 15VDC) on the control board or gate driver power supply points.

2. 2

   Check the drive's internal temperature sensors (e.g., heatsink temperature) via parameter readouts to ensure no overtemperature condition is present.

3. 3

   Inspect the connections between the main control board and the gate driver board(s) for tightness and correct seating.

4. 4

   If applicable, inspect the fiber optic cables connecting the control unit to the power module for damage or correct insertion.

5. 5

   Perform a full power cycle of the drive (e.g., disconnect mains for 1 minute) to reset internal states.