Gain Adjustment

At a Glance

Debugging a Feed forward branch firstly requires a Gain adjustment The following procedure describes the procedure to be respected.

Procedure

This table describes the steps required in order to adjust the gain of a Feed forward branch.

Step	Action
1	Put the loop controller into manual mode.
2	Position T1_FF and T2_FF at zero.
3	Establish a disruption scale and stabilize the gain so that the disruption measured when Feed forward is inputted is compensated entirely. Note: The gain on the Feed forward branch occurs according to scale values.

Example of Gain Adjustment

If one says that:

then the gain deducted will be (-10/5) / (7/5) which is -1.4.

For a Feed forward input between 0 and 10000 and FF_INF = 0.0 then FF_SUP = -140.0, for a command scale where OUT_INF = 0.0 and OUT_SUP=100