To Next Page

To Previous Page

Chapter 13 Warning CodesME300

13-7

Cause Corrective Actions

Motor locked. Clear the motor lock status.

The load is too large.

Decrease the loading.

Replace with a motor with larger 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.

Operates at low-speed too long.

Decrease low-speed operation time.

Change to the dedicated motor for the drive.

Increase the motor capacity.

Accel./ Decel. time and working

cycle is too short.

Increase the setting values for Pr.01-12–01-19 (accel./ decel. time).

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 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.

ID No. Display on LCM Keypad Warning Name Description

22_2

Motor over-heating

(oH3) PT100

Motor over-heating warning.

The AC motor drive detects the temperature inside the

motor is too high.

Action and Reset

Action level Pr.03-00=11 (PT100), PT100 input level > Pr.06-57 (default=7 V).

Action time Immediately act

Warning treatment parameter

Error treatment: Pr.06-29

0: Warn and continue operation

1: Warn and ramp to stop

2: Warn and coast to stop

3: No warning

When Pr.06-29=0 and when the temperature is < Pr.06-56 level, the oH3

warning automatically clears.

If the temperature is between Pr.06-56 and Pr.06-57, the frequency outputs

according to the operating frequency setting for Pr.06-58.

Reset method

When Pr.06-29=0, oH3 displays “Warning”. When the temperature is < Pr.06-56

level, the oH3 warning automatically clears.

Reset condition When the temperature is < Pr.06-56 level, the oH3 warning automatically clears.

Record N/A