Delta ocS fault code meaning

Delta / ocS

Series: C2000 Plus, CFP2000, CH2000, CP2000, DPD-K, ME300, MH300-HS, MH300, MP300, VP3000-E, VP3000

Overcurrent while stopped

AC motor drive

Meaning: Overcurrent or an error in the current detection hardware circuit occurs at stop. After ocS occurs, switch the power off and then on again. If there is a hardware problem, cd1, cd2, or cd3 will appear.

Possible causes

Source: C2000 Plus Series User Manual (DELTA_IA-MDS_C2000 Plus_UM_TC_20250522) P420; CFP2000 Series User Manual (DELTA_IA-MDS_CFP2000_UM_SC_20250731) P283; CH2000 Series User Manual (DELTA_IA-MDS_CH2000_UM_SC_20251030) P381; CP2000 Series User Manual (DELTA_IA-MDS_CP2000_UM_SC_20250704) P391; DPD-K Series User Manual (DPD-K user manual_20211224) P316; ME300 Series User Manual (DELTA_IA-MDS_ME300_UM_SC_20250407) P180; MH300 Series (High-Speed Models) User Manual (DELTA_IA-MDS_MH300-HS_UM_SC_20241213_v3) P252; MH300 Series User Manual (DELTA_IA-MDS_MH300_UM_TC_20260505) P292; MPD_MP300 Series User Manual (DELTA_IA-MDS_MPD_UM_SC_20260326) P144; VP3000-E & VP3000-EHS User Manual (DELTA_IA-MDS_VP3000-E-VP3000-EHS_UM_SC_20260306) P402; VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P437

Series: C2000-R, CT2000, MS300-HS, VFD-DD, VFD-ED, VFD-VE, VFD-VL

Overcurrent while stopped

AC motor drive

Meaning:

Possible causes

Source: C2000-R User Manual P217; CT2000 Series User Manual (DELTA_IA-MDS_CT2000_UM_SC_20250522) P247; MS300 (High-Speed Models) (DELTA_IA-MDS_VFD MS300_high_UM_TC_20170306) P141; VFD-DD (Ver. F, S, T & V) (DELTA_IA-MDS_VFD-DD_UM_TC_20170609) P35; VFD-ED Series User Manual (DELTA_IA-MDS_VFD-ED_UM_SC_20170315) P124; Delta VFD-VE Instruction Manual P65; Delta VFD-VL Instruction Manual P61

Series: MS300, MX300

Overcurrent while stopped

AC motor drive

Meaning: Overcurrent or an error in the current detection hardware circuit occurs while stopped. After ocS occurs, cycle the power. If there is a hardware problem, cd1, cd2, or cd3 appears.

Possible causes

Source: MS300 Series User Manual (DELTA_IA-MDS_MS300_UM_TC_20260417_v2) P246; MX300 Series User Manual (DELTA_IA-MDS_MX300_UM_TC_20260226) P137