Chapter 12 Descriptions of Parameter SettingsMS300
363
Temperature Level Overheat (OH) Warning
Default: Depending on the
model power
Sets the drive’s internal IGBT overheat warning level. When the temperature is higher than
Pr.06-15 setting, the oH1 fault displays and the warning remains but it does not affect the drive
operation.
Use this parameter to check the motor overheat in advance in order to take precautionary
measures to decrease the temperature and maintain the motor’s normal operation.
If you set the temperature 5ºC higher than the maximum setting value for Pr.06-15, IGBT
overheating occurs and the drive stops. Refer to Chapter 14 oH1 fault descriptions for details.
Stall Prevention Limit Level (Weak Magnetic Field Current Stall
Prevention Level)
0–100% (Refer to Pr.06-03, Pr.06-04)
This parameter only works in VF, VFPG, and SVC control mode.
Sets the over-current stall prevention level when the motor’s operation frequency is larger than
Pr.01-01 (base frequency). This parameter only works during acceleration.
Example: When Pr.06-03 = 150%, Pr.06-04 = 100% and Pr.06-16 = 80%, when the operation
frequency is larger than Pr.01-01 (Base motor frequency), the lowest over-current stall
prevention level during acceleration is:
Pr.06-03 × Pr.06-16 = 150 × 80% = 120% (Refer to Pr.06-03 diagram for the protective curve.)
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