Chapter 12 Description of Parameter SettingsME300
12.1-06-8
2. Pr.06-13 or Pr.06-27 set to 1 (using standard motor):
When the output current of the drive is higher than 150% of the motor rated current (refer to
the motor cooling curve with shaft-fixed fan), the drive starts to count the time. The electronic
thermal relay acts when the accumulated time exceeds Pr.06-14 or Pr.06-28.
The actual electronic thermal relay action time adjusts according to the drive output current
(shown as the motor loading rate %). The action time is short when the current is high, and
the action time is long when the current is low. Refer to the following chart:
Temperature Level Over-heat (OH) Warning
Default: 105.0
Settings 0.0–110.0 ºC
The default of this parameter is 105ºC. When using Heavy Duty or Sensorless control mode, the
OH warning is disabled if Pr.06-15 is not reduced. When the temperature reaches 100ºC, the
drive stops with an IGBT over-heat fault.
When using any control mode except Normal Duty or Sensorless mode, if Pr.06-15 is set to
110ºC, when the temperature reaches 110ºC, the drive stops with an IGBT over-heat fault.
Stall Prevention Limit Level
Default: 100
Settings 0–100% (Refer to Pr.06-03, Pr.06-04)
This parameter only works in VF and SVC control modes of Induction motor.
Sets the over-current stall prevention level when operation frequency is larger than Pr.01-01.
Example: When Pr.06-03 = 150%, Pr.06-04 = 100% and Pr.06-16 = 80%.
The over-current stall prevention level during acceleration:
Pr.06-03 * Pr.06-16 = 150 x 80% = 120%.
The over-current stall prevention level during operation:
Pr.06-04 * Pr.06-16 = 100 x 80% = 80%.
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