Pid Control Enabling (Pid Function); Feed Forward Signal - Pid Feed-Forward - GE AV-300i User Manual

· The PID control provides the flexibility to reset the PID starting point for winding from the same starting
size (empty core, mandrel, etc).
· Overwind/underwind control is provided by detecting the direction of speed reference and inverting the
PID correction automatically.
· A diameter hold , using PID enable, can be commanded when transient conditions are known to disrupt the
PID regulator, or the feedback is suspected to be incorrect. An example of this would be on a web break,
where a dancer or load cell would lose contact with the material.
· Regulator gains can be programmed to be dependant on speed, drive variables, or other external means.
This is important to account for varying torque requirements at a speed point where the roll may have no
material buildup or a lot of material inertia.
· The PI and PD parts of the PID regulator are capable of being separately enabled.
Examples follow in sections 1.16.3, 1.16.4, 1.16.5 and 1.16.8.
Sections 1.15.1 -1.15.7 describe the PID regulator details

1.15.1 PID Control Enabling (Pid Function)

The Function enables the running of the different Blocks connected to the PID function.
Description:
APPL FUNCTION
APPL FUNCTION

1.15.2 Feed Forward signal - PID Feed-Forward

The Block Function allows to state, if required, the Feed-Forward signal.
The PID inp FF src source selects the reference signal origin on the Block input.
In the configurations, the feed-forward gain factor is stated via PID inp FF gain.
It is possible to select on the source an internal reference signal. Such value is defined by Int PID inp FF.
Description:
APPL FUNCTION
APPL FUNCTION
Ch.1
142
GEH-6641E
PID
PID function
PID enable
SAVE PARAMETERS
PID
PID feed-forward
PID FF src
PID inp FF src
PID FF cfg
Int PID inp FF
PID inp FF gain
PID FF mon
PID inp FF mon
PID FF mon
SAVE PARAMETERS
—————— Function Description ——————