Cissell DX4 CONTROLLER Manuale Utente Scaricare il pdf (Pagina 6)

DX SERIES

TEMPERATURE CONTROLLER

TEMPERATURECONTROLLER

      



anddeterminesbytheamountofchangewhetherLBA

istobeONorOFF.

① Whenthestatusata100%PIDcomputedvalue

continuesbeyondtheLBAsettingtime,theLBA

turnsONifthemeasured-value(PV)doesnotrise

by2℃(℉)ormore.

(Indirectaction,theabovealarmturnsONifthe

measured-valuedoesnotfallby2℃(℉)ormore.

② Whenthestatusat0%PIDcomputedvalue

continuesbeyondtheLBAsettingtime,theLBA

turnsONifthemeasured-value(PV)doesnotfall

by2℃(℉)ormore.

(Indirectaction,theabovealarmturnsONifthe

measured-valuedoesnotriseby2℃(℉)ormore.)















































-199to1770℃(℉)or

-199.9to999.9℃(℉)

1to7200sec.

(Settingbelow“0”cannotbemade)

1to3600sec.

(DactionturnsOFFwithDsetto“0”)

1to3600sec.

(IactionturnsOFFwithIsetto“0”)

1tospan℃(℉)or0.1tospan℃(℉)

(1 actionturnsOFFwiththisactionsetto“0”)

1tospan℃(℉)or0.1tospan℃(℉)

(ON/OFFactionwithPsetto“0”or“0.0”)

-199to1770℃(℉)or

-199.9to999.9℃(℉)

Min.toMax.scalepointInstrument.

0.1to100.0℃(℉)or1to100℃(℉)

1to100sec.

Min.toMax.scalepointInstrument.

0000:Nosetdatalocked.

0001:Onlytheset-value(SV)is

changeablewiththesetdatalocked.

0010/0011:Setdatalocked.



Usuallysettheset-valueoftheLBAtoavalueof

twicetheintegraltime(I).

TheLBAcanalsobesetbytheauto-tuning(AT)

function.Inthiscase,theset-valueisautomaticallyset

toavalueoftwicetheintegraltime(I).



LBAfunctionstartstomeasuretimefromthemoment

thatthePIDComputedValue(OutputONtime/cycle)

become0%or100%,anddetectstheamountof

ProcessValuechangeateachLBAsettingtime,





 

 

TheLBAisactivatedunderthefollowingconditions.

① Controlled object trouble

....

Heater break, no power

supply,incorrectwiring,etc.

② Sensortrouble

....

Sensordisconnected,shorted,etc.

③ Actuator trouble

....

Burnt relay contact, incorrect wiring,

relaycontactnotclosed,etc.

④ Output circuit trouble

....

Burnt internal relay contact,

relaycontactnotopenorclosed,etc.

⑤ Input circuit trouble

....

The measured-value does not

changeevenifinputchanges,etc.

* If causes of the above trouble cannot be identified,

checkthecontrolsystem.

 

① TheLBAfunctionisactivatedonlyatthe0%or100%

PIDcomputedvalue.

Therefore, the time from trouble occurrence till the

activationoftheLBAfunctionequalsthetimeuntilPID

computed value becomes 0% or 100% plus the LBA

settingtime.

② The LBA function is activated while the auto-tuning

(AT)functionisactivated.

③ The LBA function is influenced by disturbances (heat

sources,etc.)andasaresultmaybeactivatedevenif

thereisnotroubleinthecontrolsystem.

④ IfLBAsettingtimeistooshortordoesnotmatchthe

controlledobject,theabovealarmmaynotbeturned

ONandOFFornotbeturnedON.Insuchacase,set

thesettingofLBAtobeslightlylonger.

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Cissell DX4 CONTROLLER Manuale Utente Pagina 6

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