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193 lines
5.4 KiB
193 lines
5.4 KiB
FUNCTION_BLOCK IJ_DAHUPID
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VAR_EXTERNAL
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END_VAR
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VAR_INPUT
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DAHU_STRUCT_IN :DAHU_IN;
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END_VAR
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VAR_OUTPUT
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DAHU_STRUCT_OUT :DAHU_OUT;
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END_VAR
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VAR
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DAHU_SPID :BS_PID;
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DAHU_WPID :BS_PID;
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DAHU_RunTime :BS_Runtime;
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DAHU_WVCTEMP :REAL;
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RunTon1 :TON;
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RunTon2 :TON;
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RunTof1 :TOF;
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RunTof2 :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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Status0 :INT;
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Status1 :INT;
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Status2 :INT;
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Status3 :INT;
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DAHU_SPID_VP :REAL;
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DAHU_SPID_VI :REAL;
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DAHU_WPID_VP :REAL;
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DAHU_WPID_VI :REAL;
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PID_in :BOOL;
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PID_timer :TON;
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END_VAR
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(*
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时 间：20200603
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版 本：1.3
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作 者：姚立
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名 称：吾悦定制吊顶空调机组程序功能块
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说 明：
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修正设定温度与目标温度关系为负值时，水阀输出0
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输入变量
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DAHU_STRUCT_IN.
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SM :INT ; 季节模式 0夏季 1冬季 2过渡
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Run :BOOL; 运行状态
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Fault :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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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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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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FPS :BOOL; 风机压差
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ISO1 :BOOL; 运行故障反馈隔离
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ISO2 :BOOL; 风机压差反馈隔离
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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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DAHU_STRUCT_OUT.
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WVCS :INT ; 水阀控制转换值，放大100倍
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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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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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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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(******************************************************运行故障回检******************************************************)
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RunTon1( IN:=DAHU_STRUCT_IN.Control , PT:=DevCheck1_time );
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RunTof1( IN:=DAHU_STRUCT_IN.Control , PT:=DevCheck1_time );
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RunTon2( IN:=DAHU_STRUCT_IN.Control , PT:=DevCheck2_time );
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RunTof2( IN:=DAHU_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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DAHU_STRUCT_OUT.Control:=DAHU_STRUCT_IN.Control;
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if DAHU_STRUCT_IN.ISO1=0 then
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if RunTon1.q or not RunTof1.q then
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if DAHU_STRUCT_OUT.Control<>DAHU_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 DAHU_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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if DAHU_STRUCT_IN.ISO2=0 then
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if RunTon2.q or not RunTof2.q then
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if DAHU_STRUCT_OUT.Control<>DAHU_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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(*输出故障代码*)
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if DAHU_STRUCT_OUT.Control<>0 then
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DAHU_STRUCT_OUT.SN := Status0*1 + Status1*4 + Status2*8;
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else
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DAHU_STRUCT_OUT.SN := 0 ;
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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 DAHU_STRUCT_IN.WVMC=0 then
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if DAHU_STRUCT_IN.Run=1 then
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if DAHU_STRUCT_IN.VP<>0.0 and DAHU_STRUCT_IN.VI<>0.0 then
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DAHU_SPID_VP:=-DAHU_STRUCT_IN.VP;
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DAHU_SPID_VI:=-DAHU_STRUCT_IN.VI;
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DAHU_WPID_VP:=DAHU_STRUCT_IN.VP;
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DAHU_WPID_VI:=DAHU_STRUCT_IN.VI;
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else
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DAHU_SPID_VP:=-30.0;
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DAHU_SPID_VI:=-150.0;
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DAHU_WPID_VP:=30.0;
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DAHU_WPID_VI:=150.0;
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end_if;
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(*制冷季*)
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if DAHU_STRUCT_IN.SM=0 then
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if DAHU_STRUCT_IN.RTS-DAHU_STRUCT_IN.TSET>=3.0 then
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DAHU_WVCTEMP:=100.0;
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end_if;
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if DAHU_STRUCT_IN.RTS-DAHU_STRUCT_IN.TSET<=0.0 then
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DAHU_WVCTEMP:=0.0;
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end_if;
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if PID_timer.q then
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DAHU_SPID(RUN:= DAHU_STRUCT_IN.RUN,STOP_D:=1,STOP_I:=0,SET:=DAHU_STRUCT_IN.TSET,FB:=DAHU_STRUCT_IN.RTS,KFB:=1.0,KP:=DAHU_SPID_VP,TI:=DAHU_SPID_VI,TD:=-1.0,DEAD_BAND:=0.2,YMAX:=100.0,YMIN:=0.0 | DAHU_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 DAHU_STRUCT_IN.SM=1 then
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if DAHU_STRUCT_IN.TSET-DAHU_STRUCT_IN.RTS>=3.0 then
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DAHU_WVCTEMP:=100.0;
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end_if;
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if DAHU_STRUCT_IN.TSET-DAHU_STRUCT_IN.RTS<=0.0 then
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DAHU_WVCTEMP:=0.0;
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end_if;
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if PID_timer.q then
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DAHU_WPID(RUN:= DAHU_STRUCT_IN.RUN,STOP_D:=1,STOP_I:=0,SET:=DAHU_STRUCT_IN.TSET,FB:=DAHU_STRUCT_IN.RTS,KFB:=1.0,KP:=DAHU_WPID_VP,TI:=DAHU_WPID_VI,TD:=1.0,DEAD_BAND:=0.2,YMAX:=100.0,YMIN:=0.0 | DAHU_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 DAHU_STRUCT_IN.SM=2 then
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DAHU_WVCTEMP:=0.0;
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end_if;
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else
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DAHU_WVCTEMP:=0.0;
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end_if;
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else
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DAHU_WVCTEMP:=DAHU_STRUCT_IN.WVMV;
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end_if;
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(*水阀赋值量程转换*)
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DAHU_STRUCT_OUT.WVCS:=REAL_TO_INT(DAHU_WVCTEMP*100.0);
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(******************************************************运行时间累计******************************************************)
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DAHU_RunTime(RUN :=DAHU_STRUCT_IN.Run , RUNTIMESET :=DAHU_STRUCT_IN.RSTV , RUNTIMERST :=DAHU_STRUCT_IN.RST ,RunTimeRec_In :=DAHU_STRUCT_OUT.RH | DAHU_STRUCT_OUT.RH:= RUNTIME);
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END_FUNCTION_BLOCK
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