Individual Functions
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Set the low pass filter time parameter for the PI control output in b5-08. Enable this parameter to prevent
machinery resonance when machinery adhesive abrasion is great or rigidity is poor. In this case, set the
parameter to be greater than the resonance frequency cycle. Increase this time parameter to reduce Inverter
responsiveness.
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With the Inverter, by setting an independent acceleration/deceleration time in parameter b5-17, you can
increase or decrease the PI target value using the acceleration/deceleration time. The acceleration/decele-
ration function (parameter C1) that is normally used, however, is allocated after PI control, so depending
on the settings, resonance with PI control and hunting in the machinery may occur. If this happens, reduce
parameter C1 until hunting does not occur and maintain the acceleration/deceleration time using b5-17.
Also, you can disable the set value in b5-17 from the external terminals during operation using multi-func-
tion input set value 34 (PI soft starter).
