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Motor overload protection characteristic

Select a motor type and whether the motor overload trip "OL2" and overload stall are enabled or disabled.
Function
The inverter overload trip "OL1" is always detected to protect the inverter.
1) When the general purpose motor is used
When the motor runs at low speed (low frequency), its cooling effect will degrade. To prevent overheat of the motor caused by this problem, the inverter starts to detect overload earlier than usual when using the general purpose motor.
[OLM: Motor overload protection characteristic] = "0" to "3"
2) When the constant-torque motor is used
The constant-torque motor can run at constant torque at lower speed (lower frequency) compared to the general purpose motor. However, an extremely low speed will cause the cooling effect of the motor to decrease.
Set the value of [F606: Motor overload reduction frequency threshold] suited for the motor characteristic.
[OLM: Motor overload protection characteristic] = "4" to "7"

Please reference latest AS3 Instruction Manual more details or latest information.

AS3 fault codes, descriptions, symptoms and suggested remedies can be found in the below links. Each fault code can also be linked to directly from the AS3 by accessing the QR code on a mobile device while the AS3 is currently experiencing the fault.

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