Delta VFD4A2ME43ANNAA User Manual

Chapter 14 Fault Codes and DescriptionsME300
14-11
Incorrect value of electronic
thermal relay
Reset to the correct motor rated current.
The maximum motor frequency is
set too low.
Reset to the correct motor rated frequency.
One drive to multiple motors
Set Pr.06-27=2 Electronic thermal relay selection motor 2 = disable, and install
thermal relay on each motor.
Check if the setting for stall
prevention is correct.
Set the stall prevention to the proper value.
Torque compensation is too large.
Adjust the torque compensation (refer to Pr.07-26 torque compensation gain)
until the current reduces and the motor does no stall.
Motor fan error Check the status of the fan, or replace the fan.
Unbalanced three-phase
impedance of the motor
Replace the motor.
ID No. Display on LCM Keypad Fault Name Fault Descriptions
24_1
Motor overheating
(oH3) PTC
Motor overheating (PTC) (Pr.03-00=6 PTC). When PTC
input > Pr.06-30, the fault treatment acts according to
Pr.06-29.
Action and Reset
Action level PTC input value > Pr.06-30 setting (Default = 50%)
Action time Immediately act
Fault treatment parameter
Pr.06-29
0: Warn and continue operation
1: Warn and ramp to stop
2: Warn and coast to stop
3: No warning
Reset method
When Pr.06-29=0, oH3 is a “Warning”. The “Warning” is automatically cleared.
When Pr.06-29=1 or 2, oH3 is a “Fault”. You must reset manually.
Reset condition Immediately reset
Record When Pr.06-29=1 or 2, oH3 is a fault, and the fault is recorded.
Cause Corrective Actions
Motor shaft lock Remove the shaft lock.
The load is too large.
Reduce the load.
Increase the motor capacity.
Ambient temperature is too high.
Change the installed place If there are heating devices in the surroundings.
Install/ add cooling fan or air conditioner to lower the ambient temperature.
Motor cooling system error Check the cooling system to make it work normally.
Motor fan error Replace the fan.
Operate at low-speed too long.
Decrease low-speed operation time.
Replace the motor with a dedicated to VFD model.
Increase the motor capacity.
Accel./Decel. time and working
cycle are too short.
Increase the setting values for Pr.01-12–01-19 (accel./decel. time).
V/F voltage is too high.
Adjust 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 low, the load capacity
decreases at low speed).
Refer to the V/F curve selection of Pr.01-43.
Check if the motor rated current
matches that on the motor
nameplate.
Reset to the correct motor rated current.
Check if the PTC is properly set
and wired.
Check the connection between PTC 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.

Delta VFD4A2ME43ANNAA Specifications

General

Brand	Delta
Model	VFD4A2ME43ANNAA
Category	DC Drives
Language	English