My mistake...
PID1.SPT -> CALC -> PID2.*RSP*
instead of
PID1.SPT -> CALC -> PID2.SPT
If I understood the manual, the native PID ramp can be used only in LOCAL
mode, right? I need to use it in REMOTE.
Thanks
__________________________________________________________
2017-04-11 15:14 GMT-03:00 Gunter, Matt <matt.gunter@xxxxxxxxxxxxxx>:
We ramp the set point of a PID from within the PID itself. The process is
controlled by an IND block. There are something like five parameters that
need to be set in a given sequence and then once the SPRAMP parameter (the
last to be set) is cleared, the L/R needs to be set to Remote. As I
recall, you have to set the PID block itself to ramp either over time or
based upon BPC.
I don't think you can set this up with a CALC block because you set the
SPRAMP point and then watch it change back.
That is what we do.
Matt
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Luciano André Farina
Sent: Tuesday, April 11, 2017 11:41 AM
To: foxboro
Subject: [foxboro] Ramp in a cascade loop
Hi folks.
I am configuring a kind of ratio control loop, with an architecture like
this:
PID1.SPT -> CALC -> PID2.SPT
I would like to implement a ramp between CALC and PID2, but the block RAMP
does not appear to be the best approach. LLAG can be used, but the answer
will not be linear.
Any ideas?
Thanks in advance,
Farina
__________________________________________________________
_________________________________________________________________________
This mailing list is neither sponsored nor endorsed by Schneider Electric
(formerly The Foxboro Company). Use the info you obtain here at your own
risks. See the disclaimer at www.thecassandraproject.org/disclaimer.html
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
------------------------------------------------------------
------------------
Notice: This e-mail is intended solely for use of the individual or entity
to which it is addressed and may contain information that is proprietary,
privileged and/or exempt from disclosure under applicable law. If the
reader is not the intended recipient or agent responsible for delivering
the message to the intended recipient, you are hereby notified that any
dissemination, distribution or copying of this communication is strictly
prohibited. This communication may also contain data subject to U.S. export
laws. If so, data subject to the International Traffic in Arms Regulation
cannot be disseminated, distributed, transferred, or copied, whether
incorporated or in its original form, to foreign nationals residing in the
U.S. or abroad, absent the express prior approval of the U.S. Department of
State. Data subject to the Export Administration Act may not be
disseminated, distributed, transferred or copied contrary to U. S.
Department of Commerce regulations. If you have received thi
s communication in error, please notify the sender by reply e-mail and
destroy the e-mail message and any physical copies made of the
communication.
Thank you.
*********************
_________________________________________________________________________
This mailing list is neither sponsored nor endorsed by Schneider Electric
(formerly The Foxboro Company). Use the info you obtain here at your own
risks. See the disclaimer at www.thecassandraproject.org/disclaimer.html
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
