Delta oL fault code meaning
Delta / oL
Series: C2000 Plus, CFP2000
Drive overload
AC motor drive
Meaning: The output current exceeds the current the AC motor drive can withstand. At an output of 120% of the AC motor drive's rated current, it can withstand this current for 60 seconds.
Possible causes
- 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
- Use the 15 preset curves in parameter 01-43 to configure the settings for the application.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
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
Series: C2000-R
AC motor drive overload
AC motor drive
Meaning:
Possible causes
Source: C2000-R User Manual P217
Series: CH2000, CP2000
Drive overload
AC motor drive
Meaning: The output current exceeds the current the AC motor drive can withstand. An output current of 150% of the AC motor drive's rated current can be sustained for 60 seconds.
Possible causes
- 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
- Use the 15 default curves in parameter 01-43 to configure the settings for the application.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: CH2000 Series User Manual (DELTA_IA-MDS_CH2000_UM_SC_20251030) P381; CP2000 Series User Manual (DELTA_IA-MDS_CP2000_UM_SC_20250704) P391
Series: CT2000, MS300-HS, VFD-EL-W
AC drive overload
AC motor drive
Meaning:
Possible causes
Source: 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-EL-W Series User Manual P57
Series: DPD-K
Drive overload
AC motor drive
Meaning: The output current exceeds the current the AC motor drive can withstand. If the output is 150% of the AC motor drive rated current, it can be sustained for 60 seconds.
Possible causes
- 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
- Use the 15 default curves in parameter 01-43 to configure the settings for the application.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: DPD-K Series User Manual (DPD-K user manual_20211224) P316
Series: HES-C
Electrohydraulic servo drive overcurrent
hydraulic servo drive
Meaning:
Possible causes
Source: HES-C Technical Manual (DELTA_IA-MDS_VFD-HES_UM_TC_20250715) P100
Series: ME300
Drive overload
AC motor drive
Meaning: The output current exceeds the current the AC motor drive can withstand. Normal load: rated output current 120 % for 1 minutes; 150 % for 3 seconds. Heavy load: rated output current 150 % for 1 minutes; 200 % for 3 seconds.
Possible causes
- 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
- The curve can be selected using parameter 01-43 V/F.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: ME300 Series User Manual (DELTA_IA-MDS_ME300_UM_SC_20250407) P180
Series: MH300
AC motor drive overload
AC motor drive
Meaning: The output current exceeds the current the AC motor drive can withstand. Normal duty: rated output current 120% for 1 minutes; 150% for 3 seconds. Heavy duty: rated output current 150% for 1 minutes; 200% for 3 seconds.
Possible causes
- 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
- The curve can be selected using parameter 01-43 V/F.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: MH300 Series User Manual (DELTA_IA-MDS_MH300_UM_TC_20260505) P292
Series: MH300-HS
AC motor drive overload
AC motor drive
Meaning: Output current exceeds the current the AC motor drive can withstand. Normal duty: rated output current 120% for 1 minutes; 150% for 3 seconds. Heavy duty: rated output current 150% for 1 minutes; 200% for 3 seconds.
Possible causes
- 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
- The curve can be selected using parameter 01-43 V/F.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: MH300 Series (High-Speed Models) User Manual (DELTA_IA-MDS_MH300-HS_UM_SC_20241213_v3) P252
Series: MP300
AC motor drive overload
AC motor drive
Meaning: The output current exceeds the current capacity of the AC motor drive. ⚫ Normal duty: Rated output current 120 % for 1 minutes; 150 % for 3 seconds ⚫ Heavy duty: Rated output current 150 % for 1 minutes; 200 % for 3 seconds
Possible causes
- 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
- The curve can be selected using parameter 01-43 V/F.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: MPD_MP300 Series User Manual (DELTA_IA-MDS_MPD_UM_SC_20260326) P145
Series: MS300
AC motor drive overload
AC motor drive
Meaning: The output current exceeds the current the AC motor drive can withstand. Normal duty: rated output current 120% for 1 minutes; 150% for 3 seconds. Heavy duty: rated output current 150% for 1 minutes; 200% for 3 seconds.
Possible causes
- 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
- Use the 15 preset curves in parameter 01-43 to configure the settings for the application.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
Source: MS300 Series User Manual (DELTA_IA-MDS_MS300_UM_TC_20260417_v2) P246
Series: MX300
Drive overload
AC motor drive
Meaning: The output current exceeds the current capacity of the AC motor drive: normal-duty rated output current 120 % for 1 minutes; 150 % for 3 seconds; heavy-duty rated output current 150 % for 1 minutes; 200 % for 3 seconds.
Possible causes
- 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
- The curve can be selected using parameter 01-43 V/F.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
Source: MX300 Series User Manual (DELTA_IA-MDS_MX300_UM_TC_20260226) P138
Series: REG2000
Overload
regenerative unit
Meaning:
Possible causes
Source: REG2000 Series User Manual (DELTA_IA-MDS_REG2000_UM_SC_20251117) P92
Series: VFD-BP, VFD-BW, VFD-E, VFD-FE, VFD-L2, VFD-M-D, VFD-MP
Drive overload
AC motor drive
Meaning:
Possible causes
Source: Delta VFD-BP Manual P51; Delta VFD-BW Manual P72; Delta VFD-E Manual P52; Delta VFD-FE Manual P41; Delta VFD-L2 Manual P2; Delta VFD-M-D Manual P44; Delta VFD-MP Manual P41
Series: VFD-P, VFD-S
Overload
AC motor drive
Meaning:
Possible causes
Source: Delta VFD-P Manual P46; Delta VFD-S Manual P34
Series: VP3000-E, VP3000
AC motor drive overload
AC motor drive
Meaning: The output current exceeds the current capacity of the AC motor drive. An output current of 110% of the AC motor drive's rated current can be sustained for 60 seconds.
Possible causes
- Load too large
- Acceleration/deceleration time and duty cycle time too short
- Increase the settings of parameters C2-00~C2-07 (acceleration/deceleration time).
- Voltage of the V/F characteristic too high
- The 15 default curves in parameter E0-00 can be used to configure settings for the application.
- AC motor drive capacity too small
- Overload during low-speed operation
- Increase the capacity of the AC motor drive.
- Torque compensation amount is too large
- Is the stall prevention action setting correct?
Source: 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