Delta ot1 fault code meaning

Delta / ot1

Series: AFE2000

Circuit error

active front end

Meaning:

Possible causes

Source: AFE2000 (DELTA_IA-PQ_AFE2000_UM_SC_20110729) P60

Series: C2000 Plus, CFP2000, CH2000, CP2000, DPD-K, ME300, MH300-HS, MH300, MP300, MS300, MX300, VP3000-E, VP3000

Overtorque

AC motor drive

Meaning: Overtorque 1 warning

Possible causes

Incorrect parameter settings
Mechanical fault
(For example, excessive torque or a locked mechanism)
Load too large
Acceleration/deceleration time and duty cycle time too short
Increase the settings of parameters 01-12~01-19 (acceleration/deceleration time).
Voltage of the V/F characteristic too high
Motor capacity too small
Overload during low-speed operation

Source: C2000 Plus Series User Manual (DELTA_IA-MDS_C2000 Plus_UM_TC_20250522) P421; 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) P145; MS300 Series User Manual (DELTA_IA-MDS_MS300_UM_TC_20260417_v2) P246; MX300 Series User Manual (DELTA_IA-MDS_MX300_UM_TC_20260226) P138; VP3000-E & VP3000-EHS User Manual (DELTA_IA-MDS_VP3000-E-VP3000-EHS_UM_SC_20260306) P400; VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P435

Series: C2000-R, CT2000, VFD-VE, VFD-VL

Overtorque 1

AC motor drive

Meaning:

Possible causes

Source: C2000-R User Manual P217; CT2000 Series User Manual (DELTA_IA-MDS_CT2000_UM_SC_20250522) P247; Delta VFD-VE Manual P66; Delta VFD-VL Manual P62

Series: MS300-HS

Overtorque 1

AC motor drive

Meaning:

Possible causes

Source: MS300 (High-speed Models) (DELTA_IA-MDS_VFD MS300_high_UM_TC_20170306) P141