Carrier 3V VVT 33ZCVVTZC-01 - Page 58

3VTM Zone Controller Temperature Control Damper Logic
LEGEND
CCMR -- Cooling Setpoint
DCV -- Demand Control Ventilation
DCVD -- DCV Damper Output
DMD -- Zone Demand
DMPPOS -- Damper Position LoalDMD= YES
HCMR --HeatSetpoint "_ heat?
SPT Space Temperature
[System Mode] Current System Mode NO
TC DPOS
_ Temperature Control Damper Output _[_
LTe-°P°S=°_
IE.....OeM_-SPTI
NO
TC_D POS =
]System Mode] Min
Position
Is DCVD > [COOL] Min Ouput_
YES_
[[COOL]Min Output = DCVD ]
I Error = HCMR - SPT
I,ntegra,T.... _e.....Inte0_a,Gain/÷Previouslot_g_a,TermI
IProportional Term = Error x Proportional Gain I
IDe_ivativeT....<E.....P,evioosErro,]xDerivativeGa,oI
TC _DPOS =Proportional Term + Integral Term + Derivative Term + Starting Value I
YES
active?
P:eVlo°_: IErtr°graIE;r°r = Integral Term
Limit suchthat:
Minimum Output < TC_DPOS < Maximum Output
[COOL] Min Output = DCVD
YES
Hold Damper
YES
IOpeoOampe,_
NO
,._TC_DPOS + 6.25%?o_ YES
Exit
[e,ose
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