InverterSINAMICS V20Verified · sol.ls-electric.com
SINAMICS V20 F72 — Modbus timeout
Alarm — operational, inspection needed· AUTO-RESET
CAUSE
Why does it occur?
Holding register update from the Modbus master did not arrive in time.
REMEDY · Step by step
How to fix it?
- Verify the RS-485 wiring, baud rate (P2010), and address (P20
- match.
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Siemens AG manual. For accurate and complete information, always consult the official manual.
Open official manual ↗CALLBACK