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353 lines
9.3 KiB
353 lines
9.3 KiB
FUNCTION_BLOCK IJ_AHU
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VAR_EXTERNAL
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END_VAR
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VAR_INPUT
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AHU_STRUCT_IN :AHU_IN;
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END_VAR
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VAR_OUTPUT
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AHU_STRUCT_OUT :AHU_OUT;
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END_VAR
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VAR
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AHU_SPID :BS_PID;
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AHU_WPID :BS_PID;
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AHU_RunTime :BS_Runtime;
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AHU_WVCTEMP :REAL;
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RunTon1 :TON;
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RunTon2 :TON;
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RunTon3 :TON;
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RunTon5 :TON;
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RunTof1 :TOF;
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RunTof2 :TOF;
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RunTof3 :TOF;
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DevCheck1_time :TIME :=t#15s; (*设备运行状态反馈*)
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DevCheck2_time :TIME :=t#15s; (*设备运行状态反馈*)
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AFSDelay_time :TIME :=t#60s;
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Status0 :INT;
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Status1 :INT;
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Status2 :INT;
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Status3 :INT;
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AHU_SPID_VP :REAL;
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AHU_SPID_VI :REAL;
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AHU_WPID_VP :REAL;
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AHU_WPID_VI :REAL;
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PID_in :BOOL;
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PID_timer :TON;
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AFSM :BOOL;
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FDSM :BOOL;
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FDOM :BOOL;
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FDOTon :TON;
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FDSTon :TON;
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(*AHU_FEC :BS_FEC;*)
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AHU_CM :BOOL;
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AHU_VFCSM :INT;
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ini :BOOL;
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VFMVM :INT;
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AFSON :BOOL;
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AFSOF :BOOL;
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AFSTON :TON;
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AFSTOF :TOF;
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END_VAR
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(*
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时 间：20200724
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版 本：1.0
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作 者：潘平
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名 称：吾悦影院空调机组程序功能块
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说 明：
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输入变量
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AHU_IN:STRUCT
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SM :INT ; 季节模式 0夏季 1冬季 2过渡
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LM :BOOL; 逻辑联动模式预留 0无联动 1联动
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FM :BOOL; 风阀联动模式 0无联动 1联动
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Run :BOOL; 运行状态
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AHUlt :BOOL; 故障状态
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Auto :BOOL; 自动状态
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Control :BOOL; 程序控制
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FDB :BOOL; 新风阀开度反馈
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RDB :BOOL; 回风阀开度反馈
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TSET :REAL; 温度设定
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WVMC :BOOL; 水阀手动控制
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WVMV :REAL; 水阀手动控制值
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VFMV :INT; 变频手动控制值
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RTS :REAL; 回风温度
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RST :BOOL; 运行时间累计重置
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RSTV :REAL; 运行时间累计重置值
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IPS :BOOL; 滤网压差
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AFS :BOOL; 低温断路开关
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ISO1 :BOOL; 运行故障反馈隔离
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ISO3 :BOOL; 低温断路报警隔离
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VP :REAL; PI设定值P
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VI :REAL; PI设定值I
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FDELAY :TIME; 风机启动延时
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CO2SET :REAL; 二氧化碳浓度设定
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CO2S :REAL; 二氧化碳浓度
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FDMV :INT; 新风阀手动控制值
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RDMV :INT; 回风阀手动控制值
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END_STRUCT;
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输出变量
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AHU_OUT:STRUCT
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WVCS :INT ; 水阀控制转换值，放大100倍
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VFCS :INT; 变频控制
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FDCS :INT; 新风阀控制
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RDCS :INT; 回风阀控制
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Control :BOOL; 启停控制
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RH :REAL; 运行小时
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SN :INT ; 设备状态代码
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END_STRUCT;
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包含以下几点功能
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1.运行故障回检,输出故障代码，支持故障报警隔离
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2.水阀PID调节/手动调节
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3.运行时间累计
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4.防冻联动程序
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5.风阀联动程序，监测阀门到位后停止控制点输出
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6.二氧化碳联动程序
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7.风机启停联动程序
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8.变频程序
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备 注：
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依赖块：
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BS_PID;
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BS_Runtime;
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*)(*
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if ini=0 then
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AHU_STRUCT_IN.VFMV:=40;
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ini:=1;
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end_if;*)
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(******************************************************风阀联动程序********************************************************)
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if AHU_STRUCT_IN.FM=0 then
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if (AHU_STRUCT_IN.Control=1 and AHU_STRUCT_IN.Auto=1) or (AHU_STRUCT_IN.Run=1 and AHU_STRUCT_IN.Auto=0) then
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AHU_STRUCT_OUT.FDCS:=100;
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AHU_STRUCT_OUT.RDCS:=100;
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else
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AHU_STRUCT_OUT.FDCS:=0;
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AHU_STRUCT_OUT.RDCS:=0;
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end_if;
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else AHU_STRUCT_OUT.FDCS:=AHU_STRUCT_IN.FDMV;
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AHU_STRUCT_OUT.RDCS:=AHU_STRUCT_IN.RDMV;
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end_if;
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(******************************************************CO2联动程序*******************************************************
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暂时预留，根据需求调整
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if AHU_STRUCT_IN.LM=1 then
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AHU_FEC(RUN :=AHU_STRUCT_IN.CM , SET :=AHU_STRUCT_IN.CO2SET , FB :=AHU_STRUCT_IN.CO2S , DEAD_BAND :=10.0 , DELAY :=t#20s | AHU_CM:= DevC);
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end_if;
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*)
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(******************************************************新风机启停程序********************************************************)
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if AFSM=0 then(*防冻报警触发隔离程序段起始*)
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(***************************************风机延时启动程序**********************************************)
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RunTon3 ( IN:=AHU_STRUCT_IN.Control , PT:=AHU_STRUCT_IN.FDELAY | AHU_STRUCT_OUT.Control:=q );
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(*变频器输出赋值*)
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if AHU_STRUCT_IN.VFMV<=50 and AHU_STRUCT_IN.VFMV>=40 then
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AHU_STRUCT_OUT.VFCS:=AHU_STRUCT_IN.VFMV;
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end_if;
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if AHU_STRUCT_IN.VFMV>50 then
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AHU_STRUCT_OUT.VFCS:=50;
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end_if;
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if AHU_STRUCT_IN.VFMV<40 then
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AHU_STRUCT_OUT.VFCS:=40;
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end_if;
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(******************************************************水阀控制******************************************************)
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PID_in:= not PID_timer.q;
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PID_timer(in:=PID_in, pt:=t#1s );(*PID积分时间*)
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if AHU_STRUCT_IN.WVMC=0 then
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if AHU_STRUCT_IN.Run=1 then
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if AHU_STRUCT_IN.VP<>0.0 and AHU_STRUCT_IN.VI<>0.0 then
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AHU_SPID_VP:=-AHU_STRUCT_IN.VP;
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AHU_SPID_VI:=-AHU_STRUCT_IN.VI;
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AHU_WPID_VP:=AHU_STRUCT_IN.VP;
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AHU_WPID_VI:=AHU_STRUCT_IN.VI;
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else
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AHU_SPID_VP:=-30.0;
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AHU_SPID_VI:=-150.0;
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AHU_WPID_VP:=30.0;
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AHU_WPID_VI:=150.0;
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end_if;
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(*制冷季*)
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if AHU_STRUCT_IN.SM=0 then
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if AHU_STRUCT_IN.RTS-AHU_STRUCT_IN.TSET>=3.0 then
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AHU_WVCTEMP:=100.0;
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end_if;
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if PID_timer.q then
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AHU_SPID(RUN:= AHU_STRUCT_IN.RUN,STOP_D:=1,STOP_I:=0,SET:=AHU_STRUCT_IN.TSET,FB:=AHU_STRUCT_IN.RTS,KFB:=1.0,KP:=AHU_SPID_VP,TI:=AHU_SPID_VI,TD:=-1.0,DEAD_BAND:=0.2,YMAX:=100.0,YMIN:=0.0 | AHU_WVCTEMP:=OUT);
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end_if;
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end_if;
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(*制热季*)
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if AHU_STRUCT_IN.SM=1 then
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if AHU_STRUCT_IN.TSET-AHU_STRUCT_IN.RTS>=3.0 then
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AHU_WVCTEMP:=100.0;
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end_if;
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if PID_timer.q then
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AHU_WPID(RUN:= AHU_STRUCT_IN.RUN,STOP_D:=1,STOP_I:=0,SET:=AHU_STRUCT_IN.TSET,FB:=AHU_STRUCT_IN.RTS,KFB:=1.0,KP:=AHU_WPID_VP,TI:=AHU_WPID_VI,TD:=1.0,DEAD_BAND:=0.2,YMAX:=100.0,YMIN:=0.0 | AHU_WVCTEMP:=OUT);
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end_if;
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end_if;
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(*过渡季*)
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if AHU_STRUCT_IN.SM=2 then
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AHU_WVCTEMP:=0.0;
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end_if;
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else
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AHU_WVCTEMP:=0.0;
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end_if;
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else
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AHU_WVCTEMP:=AHU_STRUCT_IN.WVMV;
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end_if;
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end_if;(*防冻报警触发隔离程序段结束*)
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(*水阀赋值量程转换*)
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AHU_STRUCT_OUT.WVCS:=REAL_TO_INT(AHU_WVCTEMP*100.0);
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(*变频器软启动，软停机程序*)
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(*变频软启动、停止完成后开启主机，关闭主机,但因变频器一般自带软启动、软停止，暂时保留此功能
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RunTon5 ( IN:=RunTon5M , PT:=DevDelay5_time );
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RunTon5M:= not RunTon5.q;
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if RunTon3.Q =1 then
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if RunTon5.Q then
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AHU_VFCSM:=AHU_VFCSM+1;
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end_if;
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if AHU_VFCSM>AHU_STRUCT_IN.VFMV then
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AHU_VFCSM:=AHU_STRUCT_IN.VFMV;
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end_if;
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end_if;
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if AHU_CM =0 then
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if RunTon5.Q then
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AHU_VFCSM:=AHU_VFCSM-1;
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end_if;
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if AHU_VFCSM<1 then
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AHU_VFCSM:=0;
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AHU_STRUCT_OUT.Control :=0;
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FDOM:=0;
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FDSM:=1;
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end_if;
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end_if;
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if RunTon3.q=1 then
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if AHU_VFCSM=AHU_STRUCT_IN.VFMV then
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AHU_STRUCT_OUT.Control:=1;
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end_if;
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if AHU_VFCSM=0 then
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AHU_STRUCT_OUT.Control:=0;
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end_if;
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end_if;
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AHU_STRUCT_OUT.VFCS :=AHU_VFCSM;
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*)
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(******************************************************防冻联动程序******************************************************)
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if AHU_STRUCT_IN.ISO3=0 and AHU_STRUCT_IN.SM=1 then
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AFSTON ( IN:=AHU_STRUCT_IN.AFS , PT:=AFSDelay_time | AFSON:=q );
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AFSTOF ( IN:=AHU_STRUCT_IN.AFS , PT:=AFSDelay_time | AFSOF:=q );
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if AFSON=1 and AFSOF=1 then
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AFSM:=1 ;
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end_if;
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if AFSOF=0 and AFSON=0 then
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AFSM:=0 ;
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end_if;
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if AFSM=1 then
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AHU_STRUCT_OUT.Control:=0;
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AHU_WVCTEMP:=100.0;
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AHU_STRUCT_OUT.FDCS:=0;
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AHU_STRUCT_OUT.RDCS:=0;
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Status3:=1;
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else
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Status3:=0;
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end_if;
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end_if;
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(*非冬季或隔离切除防冻报警*)
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if AHU_STRUCT_IN.ISO3=1 or AHU_STRUCT_IN.SM<>1 then
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AFSM:=0;
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end_if;
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(******************************************************运行故障回检******************************************************)
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RunTon1( IN:=AHU_STRUCT_IN.Control , PT:=DevCheck1_time);
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RunTof1( IN:=AHU_STRUCT_IN.Control , PT:=DevCheck1_time);
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RunTon2( IN:=AHU_STRUCT_IN.Control , PT:=DevCheck2_time);
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RunTof2( IN:=AHU_STRUCT_IN.Control , PT:=DevCheck2_time);
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(*设备电气控制箱控制指令与设备运行反馈不一致故障检测，检测故障产生原因电箱没电、断路器断开、中间继电器与接触器故障等为Status0*);
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if AHU_STRUCT_IN.ISO1=0 then
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if RunTon1.q or not RunTof1.q then
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if AHU_STRUCT_OUT.Control<>AHU_STRUCT_IN.Run then
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Status0:=1;
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else
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Status0:=0;
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end_if;
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if AHU_STRUCT_IN.fault=1 then
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Status1:=1;
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else
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Status1:=0;
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end_if;
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end_if;
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else
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Status0:=0;
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Status1:=0;
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end_if;
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(*设备电气控制箱控制指令与设备运行反馈不一致故障检测，检测故障产生风机压差无回检信号;
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影院无风机压差
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if AHU_STRUCT_IN.ISO2=0 then
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if RunTon2.q or not RunTof2.q then
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if AHU_STRUCT_OUT.Control<>AHU_STRUCT_IN.FPS then
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Status2:=1;
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else
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Status2:=0;
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end_if;
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end_if;
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else
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Status2:=0;
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end_if;
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*)
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(*输出故障代码*)
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if AHU_STRUCT_OUT.Control<>0 then
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AHU_STRUCT_OUT.SN := Status0 * 1 + Status1* 2 + Status2* 4 + Status3*8;
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else
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AHU_STRUCT_OUT.SN := 0 ;
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end_if;
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(******************************************************运行时间累计******************************************************)
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AHU_RunTime(RUN :=AHU_STRUCT_IN.Run , RUNTIMESET :=AHU_STRUCT_IN.RSTV , RUNTIMERST :=AHU_STRUCT_IN.RST | AHU_STRUCT_OUT.RH:= RUNTIME);
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END_FUNCTION_BLOCK
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