background image

 

 

9

 
 
            Output of 

  when in PID control mode (Ctrl=PID):   

 
 
 
 
 
 
 
 
 
 

When the controller is in PID control and dual loop output mode, 

  sets the P value of the 2nd set of PID. The 1st set of PID 

is generated when TUNE= AT, but user can also manually sets the PID value. The P value of th 2nd set of PID = the P value of 1st 
set of PID x 

. The I and D value of the 2nd set of PID remains the same as the 1st set of PID.   

 

 

 SV Control Mode Setting 

There are 4 methods for setting SV of the temperature setting; they are 

Fixed

Slope

Program

 and 

Remote

z

 

Fixed SV Mode: 

controls the temperature to directly rise to a fixed setting value

 

¾

 Set 

parameter 

 to 

 in 

Initial Setting Mode

 

¾

 

Set the target temperature: set SV value by a parameter in 

Operation Mode

   

 

z

 

Slope SV Mode: 

Control temperature rises at a slope (unit: 

/min.) to a fixed value, i.e., the temperature can be set to rise in a 

set slope (unit: 

/min.). E.G., Set a slope of 0.5 and set SV to 200.0

; this means the temperature rises 0.5

  every minute from 

Room Temperature up to 200.0

.

 

¾

 Set 

parameter 

 to 

 in 

Initial Setting Mode

 

¾

 

Set rising slope (unit: 

/min. or 

/s): set rising slope by parameter 

 in 

Regulation Mode

 

¾

 

Set target temperature: set SV value by a parameter in 

Operation Mode

 

¾

 

Set unit for rising slope (unit: 

/min. or 

/s): for parameter 

 in 

Initial Setting Mode

, set the corresponding Y 

position value to xxYx (Y can be 0 or 1; Y= 0: 

/min.; Y=1: 

/s). 

 

z

 

Program SV mode: 

This means the temperature setting value is not a fixed value but a setting curve defined by the user 

according to his-her requirements. By way of PID control, the temperature input rises along with the defined temperature curve. As 
to how to input the temperature setting curve, the machine provides 16 patterns with 16 steps each, together with a linking 
parameter, a loop parameter, and a number of executions. Each step has 2 parameters (temperature setting value and time). If the 
initial step has a time parameter set to 0, temperature will rise from room temperature at the initial slope up to the target 
temperature. After setting these parameters, each temperature controller will have its own set of initial pattern and initial step for 
creating its own temperature setting curve. Some of the terms are explained as follows:

 

a

  Initial pattern: set the program to start running at a sequential number of patterns 

b

  Initial Step: set the program to start running at a sequential number of steps 

c

  Initial Slope: If the time setting of the initial step of the initial pattern is set to 0, an initial slope shall be set to allow the 

temperature to rise from room temperature to the setting value. 

d

  Step: includes 2 parameter settings: a setting point X and an executing time T, representing the setting value (SV) to rise 

to X after time T. If the setting point X is identical to the previous setting, this process is called a Soak, otherwise a Ramp, 
therefore this control procedure is also called a Ramp Soak control. The first running procedure is preset as a Soak 
control, to set the temperature control to setting point X in advance and maintain the temperature at X, at a duration of T.   

e

  Link Parameter: the number of the subsequent pattern to be linked after executing this pattern. If set to END, the program 

mode will end but maintain the last setting value; if set to STOP, all the program controls will end with the output switched 
off.  

f

   Number of loops: Number of extra loops to be carried out for the pattern. If set to 1, the pattern will be carried out 2 times.  

g

  Executing step: Number of steps executed for each pattern.   

h

  Wait time, wait temperature: After reaching the program temperature value, a wait time and wait temperature can be set; if 

the current temperature is not within the range of (temperature setting value ± wait temperature), the set wait time will start 
to count down until the currently measured temperature reaches the range of (temperature setting value ± wait 
temperature) of each step before proceeding to the subsequent step. An alarm will be issued if the range of (temperature 
setting value ± wait temperature) is not reached when the count down reaches 0.   

i

 Execution:   

Hea

ting 

Cooling 

Set Point 

Set Point 

Hea

ting 

Cooling 

Summary of Contents for DT3 Series

Page 1: ...ecting a platinum resistance thermometer RTD 10 Please keep the wire as short as possible when wiring a platinum resistance thermometer RTD to the controller and please route power wires as far as possible from load wires to prevent interference and induced noise 11 This controller is an open type unit and must be placed in an enclosure away from high temperature humidity dripping water corrosive ...

Page 2: ...ections Ambient Temperature 0 C 50 C Storage Temperature 20 C 65 C Altitude Max 2000m Relative Humidity 35 80 RH non condensing Operation There are three modes of operation operation regulation and initial setting When power is applied controller gets into the operation mode Press the key to switch to regulation mode If the key is pressed for more than 3 seconds controller will switch to the initi...

Page 3: ... to Temperature Sensor Type Temperature Range Chart for the selection of Thermocouple or Platinum Resistance types PT TEMP UNIT Set temperature unit it wil not be displayed when in analog input mode TEMP HIGH Set up upper temperature limit the upper limit setting is different for different types of sensor 850 0 TEMP LOW Set up lower temperature limit the lower limit setting is different for differ...

Page 4: ...elect P value accordingly 47 6 I Integral Time Setting display when Crtl PID FUZZY this parameter is set automatically when TUNE AT Set I value according to the selection of PID No n 0 5 When I is set to AUTO the system will select I value accordingly 260 D Deviation Time SEtting display when Crtl PID FUZZY this parameter is set automatically when TUNE AT Set D value according to the selection of ...

Page 5: ...ect the n th PID n 0 5 press to set 0 5 th PID parameters Set up the 0 th PID temperature value press V Set up the 5 th PID temperature value press V Set up the 0 th proportional band value Set up the 5 th proportional band value Set up the 0 th Ti value Set up the 5 th Ti value Set up the 0 th Td value Set up the 5 th Td value Set up the 0 th PID integral deviation Press to set the parameters in ...

Page 6: ...r to change the PV and SV display unit select decimal point and switch between F In Operation Mode SP 1 displays decimal place ex 25 5 degree SP 0 displays integral number ex 25 degree In Initial Setting Mode Select temperature display unit 9 5 32 Set Value and the Upper Lower Limit of Input Value Setting Set the Upper Limit of Input Value This parameter can be set in the Initial Setting Mode the ...

Page 7: ... linear voltage output 0 10V user s desire output value can be attained by using compensation function For example the analog output 1 can be adjusted in and parameters in Regulation Mode The output value can be positive or negative and it can be changed by pressing the Up Down key on the temperature controller The scale of each pressing is an increase or decrease of 1uA and 1mV For example To cha...

Page 8: ...rent output L Linear voltage output S SSR output SV 3 rd digit indicates the function of accessory 2 N No function C CT measure E EVENT1 input R REMOTE input SV 4 th digit indicates the function of accessory 3 N No function C CT measure E EVENT2 input R RETRANSMISSION output Selection for Heating Cooling Alarm Dual Loop Output Control DT3 series offers 1 set of Output Control OUT1 that is built in...

Page 9: ...p to the target temperature After setting these parameters each temperature controller will have its own set of initial pattern and initial step for creating its own temperature setting curve Some of the terms are explained as follows a Initial pattern set the program to start running at a sequential number of patterns b Initial Step set the program to start running at a sequential number of steps...

Page 10: ...lue can be dynamic an analog value voltage or current can be converted into a dynamic input value Two methods can be used for the conversion positive slope or negative slope they are depicted as follows a Positive slope Remote setting Display of Remote analog input is in positive proportion with setting input e g Remote input type is selected as 1 5 V analog voltage Remote higher limit of input is...

Page 11: ... via auto tuning AT a A total of six sets of PID parameters are available one of which can be selected for carrying out PID and the program may automatically select a set of PID that is most close to the input value In order to achieve this each set of PID parameters has a reference input setting value which allows the user to set for manual setting or for auto tuning AT E G for the six sets of PI...

Page 12: ... manual control is 20 You may force a fixed output value after a switchover for example controlling the output to be 40 b Switch from manual control to PID control if manual control before switching over to PID control is 40 the program will take 40 as the initial value for calculating the PID value and output the new control Note If power of machine is switched off in manual control mood the outp...

Page 13: ...ion Mode z Self_Tuning By full output of heating or cooling max slope of temperature alteration and system delay can be attained from the Temperature Time Curve and P I D IOF parameters can be calculated Self tuning can be carried out in RUN mode and in STOP mode In the RUN mode PID parameters are allowed to be updated when the machine is running in the STOP mode PID parameters for the SV value ca...

Page 14: ...er Setting of F1 F2 function keys In the Operation Mode PV SV display mode pressing a function key more than 3 seconds will prompt you to the setting of the following functions press keys to make a selection Function Description MENU When in a screen other than the PV SV display mode pressing F1 F2 key continuously may save the setting to quickly switch the menu screen When the screen shows KEY SA...

Page 15: ...to in Operation Mode At the same time press and keys for 3 seconds to display and enter Password 1357 The screen displays Parameter reset selecting will overwrite all user settings with factory settings Key Lock Function Adjusting parameter to in Operation Mode will lock all keys adjusting the parameter to allows adjustment of SV setting values and F1 F2 function keys Unlock the key Press and keys...

Page 16: ...n PV value is higher than the setting value SV AL H or lower than the setting value SV AL L ON OFF SV AL L SV SV AL H 2 Deviation upper limit This alarm output operates when PV value is higher than the setting value SV AL H ON OFF SV SV AL H 3 Deviation lower limit This alarm output operates when PV value is lower than the setting value SV AL L ON OFF SV AL L SV 4 Absolute value upper and lower li...

Page 17: ... Use the parameters in Initial Setting Mode to set the digit Y of value Yxxx when Y 0 normal operation Y 1 peak signal Note Refer to the table PV Color Change Function This controller provides PV color change function The PV display color will be changed if the selected alarm energized Use the parameter PV color in Initial Setting Mode to select the alarm selectable items are and RS 485 Communicat...

Page 18: ...nts of the Alarm Outputs for detail 1024H Upper limit alarm 1 Please refer to the contents of the Alarm Outputs for detail 1025H Lower limit alarm 1 Please refer to the contents of the Alarm Outputs for detail 1026H Upper limit alarm 2 Please refer to the contents of the Alarm Outputs for detail 1027H Lower limit alarm 2 Please refer to the contents of the Alarm Outputs for detail 1028H Upper limi...

Page 19: ...of Analog Linear Output 1 Adjust current 1scale 1μA Adjust voltage 1scale 1mV 1118H Adjust Upper Limit of Analog Linear Output 2 Adjust current 1scale 1μA Adjust voltage 1scale 1mV 1119H Adjust Lower Limit of Analog Linear Output 2 Adjust current 1scale 1μA Adjust voltage 1scale 1mV 111AH Adjust Retransmission Upper Limit Adjust current 1scale 1μA 111BH Adjust Retransmission Lower Limit Adjust cur...

Page 20: ... added sum from Address to Data content For example 01H 03H 10 00H 00H 02H 16H then take the complementary of 2 EAH RTU Mode Read Command Read Command Response Write Command Write Command Response ADR 01H 01H ADR 01H 01H ADR 01H 01H ADR 01H 01H CMD 03H 02H CMD 03H 02H CMD 06H 05H CMD 06H 05H 10H 08H 10H 08H 10H 08H Starting data address 00H 10H Number of data count by byte 04H 02H Starting data ad...

Page 21: ...21 Panel Cutout Pattern Panel Cutout W H Model Panel Cutout W H 4848 DT320 45mm 45mm 7272 DT330 68mm 68mm 4896 DT340 44 5mm 91 5mm 9696 DT360 91mm 91mm ...

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