Delta VFD4A2ME43ANNAA User Manual

Chapter 13 Warning CodesME300
13-8
V/F voltage is too high.
Adjust the settings for Pr.01-01–01-08 (V/F curve), especially the setting value
for the mid-point voltage (if the mid-point voltage is set too small, the load
capacity decreases at low-speed).
Check if the motor rated current
matches the motor nameplate.
Configure the correct rated current value of the motor again.
Check if the PT100 is properly set
and wired.
Check the connection between PT100 thermistor and the heat protection.
Check if the setting for stall
prevention is correct.
Set the stall prevention to the proper value.
Unbalanced three-phase
impedance of the motor
Replace the motor.
Harmonics are too high. Use remedies to reduce harmonics.
ID No. Display on LCM Keypad Warning Name Description
24
Over-slip warning
(oSL)
Over-slip warning.
By using the maximum slip (Pr.10-29) as the base,
when the drive outputs at constant speed, and the F>H
or F<H exceeds Pr.07-29 level and Pr.07-30 setting
time, 100% of Pr.07-29 = Pr.10-29.
Action and Reset
Action level
When the drive outputs at constant speed, and F>H or F<H exceeds the
Pr.07-29 level.
Action time Pr.07-30
Warning treatment parameter
Pr.07-31=0 Warning
0: Warn and continue operation
1: Warn and ramp to stop
2: Warn and coast to stop
3: No warning
Reset method
When Pr.07-31=0 and when the drive outputs at constant speed, and F>H or
F<H no longer exceeds the Pr.07-29 level, the oSL warning automatically clears.
Reset condition N/A
Record N/A
Cause Corrective Actions
Check if the motor parameter is
correct.
Check the motor parameter.
The load is too large. Decrease the loading.
Check if the settings for Pr.07-29,
Pr.07-30 and Pr.10-29 are properly
set.
Check the parameter settings for oSL protection.
ID No. Display on LCM Keypad Warning Name Description
25
Auto-tuning (tUn)
Parameter auto-tuning is processing.
When running auto-tuning, the keypad displays “tUn”.
Action and Reset
Action level When running Pr.05-00 motor parameter auto-tuning, the keypad displays “tUn”.
Action time N/A
Warning treatment parameter N/A
Reset method
When auto-tuning is finished and no error occurs, the warning automatically
clears.
Reset condition When auto-tuning is finished and no error occurs.
Record N/A
Cause Corrective Actions
The motor parameter is running
auto-tuning.
When the auto-tuning is finished, the warning automatically clears.

Delta VFD4A2ME43ANNAA Specifications

General

Brand	Delta
Model	VFD4A2ME43ANNAA
Category	DC Drives
Language	English