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Chapter 6. Function Description (CON)
(( Droop Control Calculation ))
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When Torque Ref is Positive:
Droop Ref speed = ( Torque Ref [%]
-
Droop Starting Torque[%] ) * Droop Quantity[%]
The result value becomes positive. Therefore, final speed ref value decreases and it should be,
(Speed Ref – Droop Ref speed)
>
Droop low limit speed
Droop
Ref speed
<
(Speed Ref – Droop low limit speed)
Therefore, positive limit is “
Speed Ref
-
Droop Low Limit Speed”
.
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When Torque Ref is Negative:
Droop Ref speed =
-
( Torque Ref [%]
-
Droop Starting Torque[%] ) * Droop Quantity [%]
The result value becomes negative. Therefore, final speed ref value increases and it should be,
(Speed Ref – Droop Ref speed)
<
Max Motor speed
Droop
Ref speed
>
-
(Max Motor speed
-
Speed Ref)
Therefore, negative limit is “
Max Motor speed
-
Speed Ref
”.