Delta EB3000 Series User Manual page 344

Reset condition
Record
Cause
Motor locked
The load is too large
Ambien temperature is too
high
Motor cooling system error Check the cooling system to make it work normally.
Motor fan error
Operates at low-speed too
long
Accel./ Decel. time and
working cycle are too short
V/F voltage is too high
when in open-loop circuit
control
Check if the motor rated
current matches the motor
nameplate
Check if the PTC is
properly set and wired
Check if the setting for stall
prevention is correct
Unbalanced three-phase
impedance of the motor
Harmonics is too high
Abbreviated
ID No.
Warning Code
24 oSL
Action condition
Action time
Warning treatment
parameter
Reset method
Reset condition
Record
Cause
Check if the motor
parameter is correct
The load is too large
Check if the settings for
Pr.04-21 and Pr.04-22 are
properly set
Resets when temperature is lower than Pr.04-51 level
If oH3 is a warning, it will not be recorded.
If oH3 is a fault, it will be recorded.
Clear the motor lock status.
Decrease the loading.
Replace with a motor with larger capacity.
Change the installed place if there are heating devices in the surroundings.
Install/ add cooling fan or air conditioner to lower the ambient temperature.
Replace the fan.
Decrease low-speed operation time.
Change to dedicated motor for the drive.
Increase the motor capacity.
Increase setting values for Pr.00-71–Pr.00-78 (accel./ decel. time).
Decrease the setting values for Pr.03-51–Pr.03-56 (V/F curve).
Configure the correct rated current value of the motor again.
Check the connection between PTC thermistor and the heat protection.
Set the stall prevention to the proper value.
Replace the motor.
Use remedies to reduce harmonics.
Display on
Warning Name
KPED-LE02
Over-slip warning
Action and Reset
Pr.04-21 Slip Deviation Level
Pr.04-22 Slip Deviation Detection Time
Pr.04-20 Over-slip Action (Default: 0)
0: Warn and keep operation
1: Fault and ramp to stop
2: Fault and coast to stop
Auto When Pr.04-20=0, oSL is a warning and will be automatically cleared.
Manual When Pr.04-20=1 or 2, oSL is a fault and must be reset manually.
Automatically clears
If oSL is a warning, it will not be recorded.
If oSL is a fault, it will be recorded.
Check the motor parameter.
Decrease the loading.
Check the parameter settings for oSL protection.
Chapter 9 Warning and Fault CodesEB3000
Corrective Actions
Over-slip occurs when driving asynchronous
motor
Corrective Actions
9-13
Description
<Go to List of Warning Codes>