Skip to content
What do Flashing Lights on a Siemens V20 mean
What do lights Flashing Lights on a Siemens V20 mean
A flashing light on a Siemens SINAMICS V20 drive typically indicates that the converter has encountered a fault condition and cannot complete its startup sequence. The exact behaviour of the flashing provides insight into the underlying issue.
Here is a breakdown of what a flashing light means, common causes, and how to fix it:
What the Flashing Means
Red LED Flashing (2Hz – Quick Flash): General fault. The drive cannot complete its startup (boot) sequence. Often occurs after long-term storage or power interruptions.
Red LED Solid or Red/Yellow Alternating: Indicates specific communication failures (if using a Smart Access Module) or internal firmware corruption.
Green LED Slow Flash (0.5 Hz): Commissioning mode is active.
Orange LED Flashing: Indicates data transfer (e.g., parameter cloning) or that the module is starting up. Siemens SiePortal +6