USER S OPERATING MANUAL FOR PID DIGITAL TEMPERATURE CONTROLLER

User S Operating Manual For Pid Digital Temperature Controller-Free PDF

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CAUTION To prevent the risk of electrical shock switch off the power before making removing any connection or. removing the controller from its enclosure,MECHANICAL INSTALLATION. The label on the controller identifies the serial number wiring connections and batch number. OVER ALL DIMENSIONS PANEL CUT OUT IN MM,MODEL AI 7441 7741 7941. Dim A B C D E F G H,CUTOUT AI 7441 48 48 8 85 43 44 44 9. AI 7741 72 72 10 65 66 68 68 9,AI 7941 96 96 10 65 89 92 92 9. C H AI 7841 48 96 10 65 43 44 92 9,MODEL AI 7841,AI 7641 96 48 10 65 89 92 44 9.
MODEL AI 7641 INSTALLATION GUIDELINES, 1 Prepare the cut out with proper dimension as shown in. PANEL figure,A E CUTOUT F 2 Remove clamp from controller. 3 Push the controller through panel cut out and secure the. controller in its place by tightening the side clamp. ELECTRICAL INSTALLATION, The electrical connection diagram is shown on the controller enclosure as below. 1 2 3 4 5 6 7 8 9,1 2 3 4 5 1 2 3 4 5 6,1 2 3 4 5 6 7 8 9. 6 7 8 9 10 7 8 9 10 11 12,L N NO CM NC NO CM NC 10 11 12 13 14 15 16 17 18.
L N NO CM NC,RELAY SSR 10 11 12 13 14 15 16 17 18,RELAY SUPPLY RELAY SSR. L N NO CM NC,SUPPLY RELAY SSR,AI 7441 AI 7741 AI 7941 AI 7641 7841. FRONT PANEL LAYOUT,i therm AI 7641,i therm AI 7741. i therm AI 7941,i therm AI 7441 2,4 5 SET 3 SET,AI 7441 AI 7741 AI 7941 AI 7641. Sr NAME FUNCTION,i therm AI 7841, OP1 Glows when OP1 is ON flashes when delay time dly is in operation.
1 LED if selected mode is ON OFF, 2 DISPLAY It will display 1 Measured value of selected input or Error massages 2 SP value in run. mode Parameters Values code in program mode, SET SET For SP programming To access Control List along with DN key 1 To access. 3 KEY Configuration List along with UP key 2 To scroll the parameters to store its value. 4 5 UP 1 To increase alter parameter value in program mode 2 To Enter in configuration mode. 4 KEY with SET key 3 To activate Auto tuning with DOWN Key. DOWN 1 To decrease alter parameter value in program mode 2 To Enter in Control Mode mode. AI 7841 5 KEY with SET key 3 To activate Auto tuning with UP Key. 2 Document Name OIM AI 7X41 Ver 4 0 2 Page 2 of 4, At power on following sequence will be prompted on the display for 1 sec till it reaches to Home display mode. MODEL VERSION HOME,PROGRAMMING, USER LIST To access the user list Press Release SET key once. All following selected parameter s code shown in shaded will be displayed for 1 sec followed by their values options. DISPLAY RANGE DESCRIPTION DEFAULT, User can change SP value using UP DOWN keys Holding the key will change.
LSPL HSPL the value at a faster rate Press SET key to store the value move on to the 0 oC. Set Point next parameter, CONTROL LIST To enter in this mode press SET DOWN key simultaneously for 3 sec User can set the control parameters. All following selected parameter s code shown in shaded will be displayed for 1 sec followed by their values options. DISPLAY RANGE DESCRIPTION DEFAULT, Set this parameter to 15 Default LOCK CODE to access Control List. 1 9999 User has a choice to set different Lock Code via USER LOCK CODE in Config 0. 0 5 This parameter will be prompted only if selected control action is PID It sets. PRORTIONAL, to bandwidth over which the output power is adjusted depending upon the error 5 0oC. BAND SV PV The value of this parameter is automatically set by Auto tune function. This parameter will be prompted only if selected control action is PID It sets. INTEGRAL the time taken by PID algorithm to remove steady state error Value of this. to parameter is automatically set by Auto Tune function If set to 0 this function. 9999 Sec will be disabled, This parameter will be prompted only if selected control action is PID It defines. DERIVATIVE how strongly the Controller will react to the rate of change of PV Value of this. TIME parameter is automatically set by Auto Tune function If set to 0 this function. 300 Sec will be disabled, This parameter will be prompted only if selected control action is PID User can.
CYCLE set this value based on process being controlled type of Output being. to 16 0 Sec, TIME selected For Relay O P cycle time should be more than 12sec for SSR O P. 100 0 Sec cycle time should be less than 5 Sec, OUTPUT 0 0 This parameter will be prompted only if selected control action is PID This. POWER TO parameter will decide the maximum output power in applied to the load 100. LIMIT 100 0, This parameter will be promted only if selected control action is PID This. 50 parameter allows the user to carry out Auto Tuning function below the set point. to If tune offset is set to 50 tuning will be carried out at 50 of the set point 100. 100 and If set to 100 tuning will be carried out at 100 of the set point. This parameter will be prompted only if selected control action is ON OFF It. CONTROL o sets the dead band between ON OFF switching of the Output Larger value of. 1 to 25 C hysterisis minimize the number of ON OFF operation of load This increases life 2 C. of actuators like contactors but also produces large errors between PV SV. This parameter will be prompted only if selected control action is ON OFF It. 0 sets the output restart time where O P once turned OFF will turn ON only after. DELAY to restart time regardless difference between PV SP in Heat or Cool mode If set 0 Sec. 500 Sec to 0 O P will be switched without delay Also Delay will be applicable at every. This parameter will be prompted only if selected control action is PID. OUTPUT With this parameter O P will be Completely OFF after the Set Point. Offset Value If Disable O P will act Depending upon the PID Value Disable. after Set Point achieved,3 Document Name OIM AI 7X41 Ver 4 0 2 Page 3 of 4. CONFIGURATION LIST 1 To enter in this mode press and hold SET UP key simultaneously for 3 sec. 2 Press UP or DOWN key to scroll between parameter options. 3 Press SET key to store the current parameter move on to the next parameter. All following selected parameter s code shown in shaded will be displayed for 1 sec followed by their values options. DISPLAY DESCRIPTION DEFAULT, Set this parameter to 15 Default LOCK CODE to access Config List.
User has a choice to set different Lock Code between 1 to 9999 via USER LOCK CODE in 0. Config List, This parameter value is set according to the type of sensor Thermocouple or RTD. input connected to the controller s input terminals. Sensor Type Range Resolution Accuracy,Fe k J T C 1 C. INPUT Cr AL K T C 99 1300oC o,R T C 0 1700oC 1 oC 1 C. S T C 0 1700oC 1 oC,Pt 100 RTD 100 450 C 1 C,Pt 100 RTD 0 1 100 0 450 0 C. 0 1 oC 0 3 oC, LOWER Sets the minimum limit for set point adjustment It can be set from minimum specified.
SP range of selected sensor to HSPL value 0 oC, HIGHER Sets the maximum limit for set point adjustment It can be set from LSPL value to. SP maximum specified range of selected sensor 400 oC. Function of this parameter is to add subtract a constant value to the measured PV to. PROCESS obtain Final PV for control applications This parameter value needs to be be altered for. VALUE one of the following reason 0 oC,OFFSET i To compensate for known thermal gradient. ii To match the display values with another recorder or indicator measuring the same PV. Controller is equipped with an adaptive digital filter which is used to filter out any. INPUT extraneous pulses on the PV Filtered PV Value is used for all PV dependent functions If 1 oC. FILTER PV signal is fluctuating due to noise increase the filter time constant value. CONTROL User can select between PID or ON OFF action algorithm to be adopted for output PID. This parameter will be prompted only if selected control mode is ON OFF. User can select HEAT logic in which OP1 will remain ON till PV SP. CONTROL PV increases when output is ON, LOGIC This parameter will be prompted only if selected control mode is ON OFF. User can select cooling logic in which OP1 will remain ON till PV SP. PV decreases when output is ON, User has to set this parameter very carefully in accordance with the output used. Separate terminal for RELAY SSR Refer electrical installation. OUTPUT Select Relay if LOAD is connected via contactor Whenever user selects Relay Cycle time will. automatically set to 16 sec User can modify cycle time via Control List RELAY. Select SSR if LOAD is connected via SSR DC voltage pulses Whenever user selects. SSR Cycle time will automatically set to 1sec User can modify cycle time via Control List. This parameter will be prompted only if selected control action is PID Setting this parameter on. OVERSHOOT higher side will slows down the rate of rise of PV to minimize overshoot this may cause delay to. CONTROL reach SP Disabling or Setting this parametr on lower side will increase the rate of rise of PV 50. POINT which may cause overshoot Disable this option if delay is not required to reach SP. This may cause overshoot w r t SP,4 Document Name OIM AI 7X41 Ver 4 0 2 Page 4 of 4.
DISPLAY DESCRIPTION DEFAULT, If Enabled this parameter will be prompted if user press Up Down keys. Simultaneously for 3Sec, If Disabled this parameter will not be prompted if user press Up Down keys. Simultaneously for 3Sec, If Enabled User can View edit the Set point 1 in USER list. If disabled User can only View the Set Point 1 but Can not edit it in USER list. USER Default USER LOCK CODE is 15 to access Control Configuration List. LOCK User has a choice to set its own USER LOCK CODE between 1 to 9999 this is to 15. CODE prevent unauthorized access of Control Configuration List. AUTO TUNING MODE To enter in this mode Press hold UP DOWN key simultaneously for minimum 3 sec. DISPLAY DESCRIPTION DEFAULT, This function will be executed only if selected control action is PID. AUTO Auto tuning function can be initiated by setting this parameter to YES The decimal of. TUNING LSB flashes till Auto Tuning function is in progress During Auto tuning Controller NO. MODE learns the process characteristics by itself calculates required P I D values. User can cancel or abort this feature by setting this parameter to NO. USER GUIDE, ON OFF ACTION In this mode Output Relay SSR remains ON till actual temperature reaches to the set point value On.
reaching SP Output turns OFF remains OFF till actual temperature drops down in Heat logic or raises in Cool logic. equal to hysterisis set by User As shown in Fig 3 1 3 2. TEMP 0C TEMP 0C,HYSTERISIS,HYSTERISIS,O P ON OFF ON OFF ON O P ON OFF ON OFF ON O P. HEAT LOGIC ON OFF TIME COOL LOGIC ON OFF TIME,Fig 3 1 Fig 3 2. AUTO TUNING MODE In this mode Controller learns the process characteristics by itself and calculates the required P I. D values It can be performed at any time after power ON but it is best to start it when the process is at Ambient temperature. in order to minimize overshoot undershoot Auto tuning is applied in case of. 1 Initial set up for a new process, 2 Substantial change in SP from previous auto tuning value. 3 Control accuracy is not satisfactory, If the control performance by using auto tuning is still unsatisfactory User can apply the further adjustments of P I D values. as shown below,Adjust Symptom Solution,Slow Response Decrease PB.
Proportional Band,Over Shoot or Oscillations Increase PB. Slow Response Decrease Int,Integral Time,Instability or Oscillation Increase Int. Slow Response or Oscillation Decrease Dt,Derivative Time. High Over Shoot Increase Dt, ABBREVIATION C A Control Action NC Normally Close terminal of SP Set Point Value set temp. CJC Cold junction compensation Relay SSR Solid State Relay. CM Common terminal of relay NO Normally Open terminal of T C Thermocouple. LWC Lead wire Length Relay,compensation OP1 Output 1.
PV Process Value actual temp,Mfgd by Innovative Instruments. Precision unrivalled, 338 New Sonal Link Service Ind Est no 2 Link Road Malad W Mumbai 400064. Tel 022 66939916 17 Fax 022 66939918, E mail sales innovativeinstruments co in Website innovativeinstruments co in. 5 Document Name OIM AI 7X41 Ver 4 0 2 Page 5 of 5,. CJC for TC Built in automatic LWC for Pt 100 Built in upto 18E max Digital Filter 1 to 10 Sec 3 RELAY OUTPUT interferences Contact type N O CM N C Contact Rating 5A 250VAC or 30 VDC Life expectancy gt 5 00 000 operations Isolation Inherent 4 SSR DRIVE OUTPUT Drive Capacity 12V 30mA

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