Dynisco ATC 990 User Manual

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1. Power!up!the!instrumen t!and!if !in!automatic!control!mode
(1.)
,!change!to!manual!mod e!at!0% !power/0!RPM
(2).
.!Set!the!
alarm!types!and!valu es!as!requi red!for!your!applicati on!(see !ala rm!configurati on).!
2. Set !local!setpoint!1!as!the!active!se tpoint,!and!its !value!to!the!requ ired!operating!pressu re
(3)
.!
3. Allow!the! process!to!reach!operating!temperature,!then! carefully!adjust!the!manual!power!level!(use!UP!&!DOWN!keys!
from!the!main!screen)!to!bring!the!process!approximate ly!to!th e!operating!pressure. !
4. Select!the!aut omatic!tuning!me nu,!and!set!“Run!Pressure!Pr e‐Tune”!to!YES.!
5. Pre ss!the!RIGHT!k ey.!The!Pressu re!Tune!Status!screen!shows!the!current!status!‐e.g.!“Running”,!and!The!TUNE!LE D!is !
flashes!until!t he!pre‐ tune!is!completed.!
6. The!instru ment!adds !the!defined!Press ure!Tune!Output!pulse
(4.)
!to!the !cur rent!manual!p ower!level, !the!process!reaction!
is!observed!and!the!instrument !calculates!and!stores!the!co rrect!PI!tuning!terms.!Pre ‐tune!is!now!complete!and!exits.!
7. Automatic!control!can!n ow! be!selected,!where!th e!control!power!outp ut!level!is!maintained!by!the!controller .!If!
setpoint!mode!was!s elected !as!the! auto/manual!transfer!method,!some!adjustment!of!the!setpoint!may!be!required
(5.)
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8. Optionally!Pressure!Self‐Tune!may!be!used!once!in!automatic!control! mode,!by!s electing!the!automatic!tuning!menu,!
and!settin g!“Run!Pressure!Self‐Tune”!t o!YES
(6.)
.!The!TUNE!LED!is!lit!if!Self‐tune!is!ena bled.!
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1. The!initial !“powe r‐up!co ntrol!state”!ca n!be!set!to !ma nual!or !automatic !from!the!control! con figuration!menu,!the! default !
is!man ual! mode!at!0%!power
(2).
.!Auto! or!man ual! mode!can!be!selected!from!the!auto/manual!control!menu,!or!to!
immediately!go!to!m anual!mod e!from! any!point,! simply! press!the!L EFT !&!RIGHT!k eys!simultaneously.!
The!transition!from!auto!to!manual!control!while!running!is!Bumpless.!It! takes!the!last!PI!power!level! as!the!i nitial!
ma nual!control!p ower!level.!
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2. Manual!power!can!be!expressed!in !%!or!RPM.!For!RPM,!ena ble! “Scaled!Po wer”!in!the!control!configuration!menu,!then!
sca le!0 %!and!100%!power!to!their!equivalent!RPM!values).!
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3. Set point!S elect!and!the!setpoin t!va lue! screen!is!in!operation!mode.!Setpoint!upp er!a nd!lower!li mits!ca n!be!set!in!the !
contro l!configura tion!menu.!
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4. The!Pressure!Tun e!Output!pulse!va lue! is!set!in!the!control!configur ation!menu.!The!pulse!can!be!fr om!‐25%!to!+25%.!
Defaul t!is!10%.!
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5. The!method!of!transition!from! manual!to!automatic!contro l!is!set!in!the!c ontrol!configurati on!menu.!Two!methods!are!
possib le,!both!en sure!a!smooth!tra nsit ion!to!automatic!mode:!
a. Bumpless! Mode!sets!the!initial! PI!power!level!to!match!the!previous!manual!power!vale,!then!uses !the!int egral!
function!prog ressively!alter! the!power!to!the!corr ect! value.!
b. Setpoint!Mo de!modified!the!c urrent!Setpoint!value !to!the! measured!input!pressure!value!at!the!time!of!switchover.!
The!opera tor!can!change!the!se tpoint!value!from!the!setpoi nt!value!screen!and!the!PI!control!algorithm!will!adjust!
the!process!to!this!value.!

Dynisco ATC 990 Specifications

General

Brand	Dynisco
Model	ATC 990
Category	Controller
Language	English