Delta CP20 fault code meaning
Delta / CP20
Series: MH300-HS, MH300, MS300
Dedicated error codes for internal communication
AC motor drive
Meaning: Internal communication transmission timeout
Possible causes
- Internal communication error
Source: MH300 Series (High-Speed Models) User Manual (DELTA_IA-MDS_MH300-HS_UM_SC_20241213_v3) P253; MH300 Series User Manual (DELTA_IA-MDS_MH300_UM_TC_20260505) P293; MS300 Series User Manual (DELTA_IA-MDS_MS300_UM_TC_20260417_v2) P247
Series: MS300-HS
Dedicated error codes for internal communication
AC motor drive
Meaning:
Possible causes
Source: MS300 (High-speed model) (DELTA_IA-MDS_VFD MS300_high_UM_TC_20170306) P142
Series: MX300
Dedicated error codes for internal communication
AC motor drive
Meaning: The inverter axis monitors the connection status with the rectifier module. If communication with the rectifier module remains unavailable, the CP20 error is displayed.
Possible causes
- Poor contact between the backplane and module
- 8-100
Source: MX300 Series User Manual (DELTA_IA-MDS_MX300_UM_TC_20260226) P139