Table of sequence controller operating modes

Operating modes

A further special feature of the sequence controller is its control by the Enum E_HVACSequenceCtrlMode
 Not only is the controller enabled by the Enum E_HVACSequenceCtrlMode, it also transmits the operating mode of the air conditioning system to the controller blocks in the sequence. Depending on the operating modes, each sequence controller hence reacts specially to the Enum E_HVACSequenceCtrlMode as illustrated in the table.

Value of: E_HVACSequenceCtrlMode

0 (Stop)

1 (On)

2 (night cooling)

3 (support operation)

4 (overheating protection)

5 (night cooling and overheating protection)

FB_HVACMasterSequenceCtrl
 Master controller

disabled 0 %

Enable

disabled 0 %

Enable
rY=ZuluftMax.Temp

Enable
rY=ZuluftMin.Temp

Enable
rY=ZuluftMin.Temp

FB_HVACPIDPreHeating

Pre-heater

disabled 0 %

Enable

disabled 0 %

Enable 0 % - 100 %

disabled 0 %

disabled 0 %

FB_HVACPIDReHeating
Re-heater

disabled 0 %

Enable

disabled 0 %

disabled 0 %

disabled 0 %

disabled 0 %

FB_HVACPIDCooling
Cooler

disabled 0 %

Enable

disabled 0 %

disabled 0 %

Enable 0 % - 100 %

Enable 0 % - 100 %

FB_HVACPIDEnergyRecovery
Heat recovery

disabled 0 %

Enable

disabled 0 %

disabled 0 %

disabled 0 %

disabled 0 %

FB_HVACPIDMixedAir
 Mixed air flaps

disabled 0 %

Enable

max. outside air rate 100 %

0 % air circulation only

0 % air circulation only

max. outside air rate 100 %