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No.
(Hex.)
|
Name
|
Description
|
Default
(Range)
|
|
n3-13
(0531)
|
OverexcitationBraking (OEB) Gain
|
    
Sets the gain value that the drive multiplies by the V/f pattern output value during overexcitation deceleration to calculate the overexcitation level.
|
1.10
(1.00 - 1.40)
|
The V/f pattern output value goes back to its usual level after the motor stops or accelerates again to the frequency reference speed.
The best value of this parameter changes when the flux saturation characteristics of the motor change.
-
Gradually increase the value of n3-13 to 1.25 or 1.30 to increase the braking power of Overexcitation Deceleration. If the gain is too much, the motor can have flux saturation and cause a large quantity of current to flow.
-
This can increase the deceleration time. Decrease the setting value if flux saturation causes overcurrent. If you increase the setting value, the drive can detect oC [Overcurrent], oL1 [Motor Overload], and oL2 [Drive Overload]. Decrease the value of n3-21 [HSB Current Suppression Level] to prevent oC and oL.
-
If you use overexcitation deceleration frequently or if you use overexcitation deceleration for an extended period of time, it can increase motor temperature. Decrease the setting value in these conditions.
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If ov [Overvoltage] occurs, increase the deceleration time.