BAC_AC_SuAFan_FC_01
Application
The call template BAC_AC_SuAFan_FC_01 is used for controlling a pressure-controlled supply air fan.
The main tasks of the template are:
- Pressure control of the supply air fan
- control of a frequency converter
- Differential pressure monitoring
Interface
Plant diagram 01
Plant diagram 02
Block diagram
VAR_INPUT
udiPltStp : UDINT;
udiOpMod : UDINT;
udiPltStp: Plant start sequence steps. The plant steps are generated in the system start program BAC_AC_StartT_01.
udiOpMod: Plant operation mode. The plant operation mode is determined in the mode selection programBAC_AC_OpMod_01.
Program description
Instance | Type | Task | ||||
---|---|---|---|---|---|---|
PrssAir | Subtemplate pressure sensor PrssAiris the control value for the pressure regulator PID. | |||||
PID | Subtemplate pressure control. The control is analog via PID controller | |||||
DiffPrssMonit | Subtemplate differential pressure monitoring via differential pressure switch | |||||
FU | Template control of a frequency converter, including motor logic. | |||||
OpModSfty | The multiplexer defines the safety priority for the control of the supply air fan FU, based on the plant operation mode udiOpMod | |||||
udiOpMod | Enable | |||||
OPMOD_AC_SMEXTTPRG | Smoke extraction program | TRUE | ||||
OPMOD_AC_SMEXTTSUA | Smoke extraction supply air | TRUE | ||||
OPMOD_AC_SMEXTTEXHA | Smoke extraction exhaust air | FALSE | ||||
OPMOD_AC_FIRE | Fire | FALSE | ||||
OpModDst | The multiplexer defines the fault priority for the control of the supply air fan FU, based on the plant operation mode udiOpMod | |||||
udiOpMod | Enable | |||||
OPMOD_AC_FORCVENT | Forced ventilation | TRUE | ||||
OPMOD_AC_EMERG | emergency | FALSE | ||||
OPMOD_AC_FRST | Frost | FALSE | ||||
OPMOD_AC_CENTSWIOFF | Central shutdown | FALSE | ||||
OPMOD_AC_ALM | Fault/alarm | FALSE | ||||
| >=, AND | Network containing the enable for the supply air fan as result, based on the plant steps udiPltStp | ||||
| SEL | SEL selection, which specifies the value for the safety priority of the template FU | ||||
| OR | The result of the OR operation is the enable of the disturbance priority of template FU. |
Version history
Version number | Comments |
---|---|
1.0.1 | First release |