An Alarm 38 on a Danfoss VLT drive indicates an internal fault. This means there's a malfunction detected within the drive itself, preventing it from operating normally.

Here's what you should know about Alarm 38:

Cause:

• The internal fault can be caused by various electronic component failures within the drive. Unfortunately, pinpointing the exact cause without further information is difficult.

Troubleshooting Steps:

1. Safety First: Always ensure the system is completely powered down and locked out before attempting any troubleshooting procedures.
2. Check Connections: Verify that all power and control connections to the drive are secure.
3. Review Recent Events: If possible, recall any recent events that might have triggered the fault, such as power surges or abnormal operating conditions.