Siemens SINAMICS V20 VFD
Siemens SINAMICS V20 VFD code F80: Signal lost on analog input
The signal has been lost on the analog input, which forces the drive to stop the booth equipment.
- Code
- F80
- Name
- Signal lost on analog input
- Controller
- Siemens SINAMICS V20 VFD
- Type
- Sensor open circuit
- What it does
- Fault: the equipment trips and stops
- Risk
- YELLOW Booth plays by its own rules
- Reset
- Needs a manual reset
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated November 4, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 2 common causes listed for this code
- The step by step check for this problem, one check at a time
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Siemens SINAMICS V20 VFD code F80 mean?
The signal has been lost on the analog input, which forces the drive to stop the booth equipment.
Is Siemens SINAMICS V20 VFD code F80 dangerous?
It is graded yellow: not hard, but a booth does it differently than the gear most techs know, so follow the checks in order.
How do I fix Siemens SINAMICS V20 VFD code F80?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Siemens SINAMICS V20 VFD codes
F64 · Converter attempted to do an automatic cF70 · I/O Extension Module communication faultF71 · USS setpoint fault (on RS232)F72 · USS/MODBUS setpoint fault (on RS485)F85 · External faultA501 · Current limitA502 · Overvoltage limitA503 · Undervoltage limitA504 · Converter overtemperatureA505 · Converter I2t