Inovance 20-4 fault code meaning
Inovance / 20-4
Series: MD580
Communication connection between the encoder card and the main control board is open
AC drive
Meaning: Fault category: Encoder error; Default level: Coast to stop; Reset method: Manual reset
Possible causes
- Unreliable wiring between the encoder card and control board 2. Encoder card error 3. Encoder card is not reliably grounded 4. Other causes
Source: Inovance Official Function Manual 19011555 A00 P452
Series: MD580S
Communication connection between the encoder card and the main control board is open
AC drive
Meaning:
Possible causes
- Unreliable wiring between the encoder module and the control board.
- Encoder module error.
- The encoder module is not reliably grounded.
- Other causes
Source: MD580S Series Low-Voltage High-Performance Industrial AC Drive Function Manual P426
Series: MD880
FVC operation without an encoder
AC drive
Meaning:
Possible causes
- The PG card is offline or the PG card is not installed.
- The PG card module is loose.
- Other causes.
Source: MD880 Series AC Drive Function Manual (HCU) P610