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Lo
cal DMD =
heat?
L ocal DMD =
cool?
TC_D POS =
[System Mode] Min
Position
Exit
Error = HCMR - SPT
Error = CCMR - SPT
Current DMPPOS =
TC_D POS 6 .2 5%?
Current DMPPOS <
TC_D POS - 6 .25%?
Current DMPPOS >
TC_D POS + 6.25 %?
Close Damper
Open Damper
Enter
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Integral Term = (Error x Integral Gain) + Previous Integral Term
Proportional Term = Error x Proportional Gain
Derivative Term = (Error - Previous Error) x Derivative Gain
TC _D POS =Proportional Term + Integral Term + Derivative Term + Starting Value
Previous Error = Error
Previous Integral Term = Integral Term
Limit suchthat:
Minimum Output <
< Maximum Output
TC_DPOS<[System Mode] Min Output
or
TC_DPOS>[System Mode] Max Output
Is DCV
active?
Is DCVD > [COOL ] Min Ouput?
[COOL] Min Output = DCVD
Is DCV
active?
Is DCVD > [COOL ] Min Ouput?
[COOL ]Min Output = DCVD
Hold Damper
YES
NO
YES
NO
NO
YES
YES
NO
YES
NO
+
_
TC_DPOS=0
TC_DPOS
3V™ Zone Controller Temperature Control Damper Logic
LEGEND
CCMR
—
Cooling Setpoint
DCV
—
Demand Control Ventilation
DCVD
—
DCV Damper Output
DMD
—
Zone Demand
DMPPOS
—
Damper Position
HCMR
—
Heat Setpoint
SPT
—
Space Temperature
[System Mode] —
Current System Mode
TC_DPOS
—
Temperature Control Damper Output
Summary of Contents for 3V VVT 33ZCVVTZC-01
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