Delta Temperature Controller
User Manual
Foreword
The user manual details the process of using Delta DT series temperature controllers step by step for beginners to easily set up all kinds of parameters in a short time.
CHAPTER 1: DEFAULT SETTINGS OF PARAMETERS
1.1 Default Settings in Temperature Controller
The following tables show default settings for DTA, DTB, and DTC models.
DTA Model: DTA4896R1
| Parameter | PV | SV | |
|---|---|---|---|
| Cont | |||
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | |||
| EPUN | |||
| EP-H | 500.0 | ||
| EP-L | -20.0 | ||
| CEFL | PCd | ||
| 5-HC | HEAL | ||
| ALR1 | 0 | ||
| ALR2 | 0 | ||
| COSH | OFF | ||
| C-SL | 1 | ||
| C-NG | 1 | ||
| C-LE | 1 | ||
| C-P6 | 1 | ||
| C-6P | 1 | ||
DTB Model: DTB4896RR
| Parameter | PV | SV | |
|---|---|---|---|
| Cont | |||
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| OPE | PE | ||
| EPUN | C | ||
| EP-H | 600.0 | ||
| EP-L | -99.9 | ||
| CEFL | P08 | ||
| 5-HC | HERE | ||
| ALR1 | 0 | ||
| ALR2 | 0 | ||
| COSH | OFF | ||
| C-SL | ASC1 | ||
| C-NG | 1 | ||
| C-LE | 7 | ||
| C-P6 | ELEN | ||
| C-6P | 1 | ||
DTC Model: DTC1000R
| Parameter | PV | SV |
|---|---|---|
| Sensor Connection | Not connected | 0.0 |
| Set up control modes | ||
| Control mode | PID control | |
| Run/stop | Run | |
| Output 1 | Heating | |
| Output 2 | Heating | |
| Status of key | Normal | |
| Auto-tuning | End | |
| Set up temperature | ||
| Input type | PT100 | |
| Input unit | °C | |
| Set value | 0.0 | |
| Maximum input temperature | 600.0 | |
| Minimum input temperature | -20.0 | |
| Position of decimal point | 1 digit after decimal point | |
| Set up PID parameter | ||
| Proportional band (P) | 47.6 | |
| Integral time (I) | 260 | |
| Derivative time (D) | 41 | |
| Control cycle 1 | 20 | |
| Integral default value | 0.0 | |
| Control cycle 2 | 20 | |
| Input compensation | 0.0 | |
| Password of DTC | ||
| Level 1 password | Disabled | |
| Level 2 password | Disabled | |
| Level 3 password | Disabled | |
1.2 How to Return to Default Settings in DTA
Follow these steps to reset DTA to default settings:
| Display | PV | SV | Explanations |
|---|---|---|---|
| Cont | Status of the temperature controller | ||
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | Select the sensor connected. Default = PT100 | ||
| EPUN | C | Temperature unit. Default = °C | |
| EP-H | 500.0 | Upper limit of temperature range | |
| EP-L | -20.0 | Lower limit of temperature range | |
| CEFL | P08 | The control modes include: PID, ON/OFF, MANUAL. Default = PID. Select "ON/OFF" here. | |
| 5-HC | HEAL | Select heating or cooling mode. Default = heating | |
| ALR1 | 0 | Set up Alarm mode 1. Default = alarm output disabled | |
| ALR2 | 0 | Set up Alarm mode 2. Default = alarm output disabled | |
| COSH | OFF | ON/OFF of communication write-in. Default = OFF | |
| C-SL | 1 | Communication address | |
| C-NG | 9600 | Communication speed | |
| C-LE | 7 | Data length (in bits) | |
| C-P6 | ELEN | Parity bit | |
| C-6P | 1 | Stop bit | |
| Back to top | Return to the first item in the initial setting mode: CF. Return to PV/SV screen in the operation mode. | ||
Communication
- Make sure RS-485 hardware communication cable in DTA has been connected to the computer.
- Make sure the communication parameters in DTA are consistent with those in the computer.
| Display | PV | SV | Explanations |
|---|---|---|---|
| 25.0 | 00 | Status of the temperature controller. Example displayed values | |
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | Example displayed value: PT100 Sensor | ||
| COSH | OFF | ON/OFF of communication write-in | |
| COSH | ON | OFF: communication write-in disabled ON: communication write-in enabled | |
DTCOM Software
A description of the DTCOM software interface for single command test is provided. It includes fields for ADDRESS (e.g., 01), COMMAND (e.g., Write One W), FUNC ADDR (e.g., 471B), WRITE DATA (e.g., 1234), LRC (e.g., 51), SEND, and RECEIVED. A warning states: "Function address = 471B; Write data =1234. (Please DO NOT modify this value; otherwise system confusion may occur.)"
After completing the procedures, DTA will display information on the left hand side, indicating successful return to default settings. A return to default value message states: "Return to default value. The default sensor is PT100, which will be displayed when DTA is not connected to a sensor or thermocouple." The adopted model is DTA4896R1 with firmware V3.50.
1.3 How to Return to Default Settings in DTB
Follow these steps to reset DTB to default settings:
| Display | PV | SV | Explanations |
|---|---|---|---|
| Cont | Status of the temperature controller | ||
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | Select the sensor connected. Default = PT100 | ||
| EPUN | C | Temperature unit. Default = °C | |
| EP-H | 600.0 | Upper limit of temperature range | |
| EP-L | -99.9 | Lower limit of temperature range | |
| CEFL | ANAF | The control modes include: ON/OFF, MANUAL, PID and PID PROG. Default = PID. Select "ON/OFF" here. | |
| 5-HC | HEAL | Select heating/cooling/heating 1 cooling 2/heating 2 cooling 1. Default = heating | |
| ALR1 | 0 | Set up Alarm mode 1. Default = alarm output disabled. | |
| ALR2 | 0 | Set up Alarm mode 2. Default = alarm output disabled. | |
| ALR3 | 0 | Set up Alarm mode 3. Default = alarm output disabled. | |
| SBLR | OFF | Set up system alarm | |
| COSH | OFF | ON/OFF of communication write-in. Default = OFF | |
| C-SL | ASC1 | Select communication format | |
| C-NG | 1 | Communication address | |
| C-LE | 9600 | Communication speed | |
| C-P6 | 7 | Data length (in bits) | |
| P-69 | ELEN | Parity bit | |
| SBLP | 1 | Stop bit | |
| Back to top | Return to the first item in the initial setting mode: CF. Return to PV/SV screen in the operation mode | ||
Communication
- Make sure RS-485 hardware communication cable in DTB has been connected to the computer.
- Make sure the communication parameters in DTB are consistent with those in the computer.
| Display | PV | SV | Explanations |
|---|---|---|---|
| 15.0 | 00 | Status of the temperature controller. Example displayed value | |
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | Example displayed value: PT100 Sensor | ||
| COSH | OFF | ON/OFF of communication write-in | |
DTCOM Software
A description of the DTCOM software interface for single command test is provided. It includes fields for ADDRESS (e.g., 01), COMMAND (e.g., Write One W), FUNC ADDR (e.g., 472A), WRITE DATA (e.g., 1234), LRC (e.g., 42), SEND, and RECEIVED. A warning states: "Function address = 472A; Write data =1234. (Please DO NOT modify this value; otherwise system confusion may occur.)"
After completing the procedures, DTB will display information on the left hand side, indicating successful return to default settings. A return to default value message states: "Return to default value. The default sensor is PT100, which will be displayed when DTB is not connected to a sensor or thermocouple." The adopted model is DTB4896RR with firmware V1.50.
1.4 How to Return to Default Settings in DTC
Follow these steps to reset DTC to default settings:
Communication
- Make sure RS-485 hardware communication cable in DTC has been connected to the computer.
- Make sure the communication parameters in DTC are consistent with those in the computer.
DTCOM Software
A description of the DTCOM software interface for single command test is provided. It includes fields for ADDRESS (e.g., 01), COMMAND (e.g., Write One W), FUNC ADDR (e.g., 472A), WRITE DATA (e.g., 1234), LRC (e.g., 42), SEND, and RECEIVED. A warning states: "Function address = 472A; Write data = 1234 (Please DO NOT modify this value; otherwise system confusion may occur.)"
Another DTCOM software description is provided for a different function address: ADDRESS (e.g., 01), COMMAND (e.g., Write One W), FUNC ADDR (e.g., 474E), WRITE DATA (e.g., 1234), LRC (e.g., 1E), SEND, and RECEIVED. A warning states: "Clear the user's settings. Function address = 474E; Write data = 1234 (Please DO NOT modify this value; otherwise system confusion may occur.)"
After switching off DTC and re-powering it, it will return to default settings. The adopted model is DTC1000R with firmware V1.40.
CHAPTER 2: CONTROL MODES IN DTA
2.1 ON/OFF
There are three control modes in DTA: ON/OFF, MANUAL and PID. First, press SET for 3 seconds to enter the "initial setting" mode. See below for how to switch between each mode:
A diagram shows mode switching: Press SET to enter Operation Mode. Press SET for more than 3 secs to enter Initial Setting Mode. From Initial Setting Mode, press SET to return to Operation Mode. From Operation Mode, press SET to enter Regulation Mode. Regulation Mode, Operation Mode, and Initial Setting Mode are depicted as distinct states.
| Display | PV | SV | Explanations |
|---|---|---|---|
| Cont | Status of the temperature controller | ||
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | Select the sensor connected. Default = PT100 | ||
| EPUN | C | Temperature unit. Default = °C | |
| EP-H | 500.0 | Upper limit of temperature range | |
| EP-L | -20.0 | Lower limit of temperature range | |
| CEFL | ANAF | The control modes include: PID, ON/OFF, MANUAL. Default = PID. Select "ON/OFF" here. | |
| 5-HC | HEAL | Select heating or cooling mode. Default = heating | |
| ALR1 | 0 | Set up Alarm mode 1. Default = alarm output disabled | |
| ALR2 | 0 | Set up Alarm mode 2. Default = alarm output disabled | |
| COSH | OFF | ON/OFF of communication write-in. Default = OFF | |
| C-SL | 1 | Communication address | |
| C-NG | 9600 | Communication speed | |
| C-LE | 7 | Data length (in bits) | |
| C-P6 | ELEN | Parity bit | |
| C-6P | 1 | Stop bit | |
| Back to top | Return to the first item in the initial setting mode: CF. Return to PV/SV screen in the operation mode. | ||
2.2 MANUAL
Press SET for 3 seconds in the main screen to enter the "initial setting mode". Press several times until the parameter 6860 is displayed.
| Display | PV | SV | Explanations |
|---|---|---|---|
| CERL | 6860 | Status of the temperature controller. The control modes include: PID, ON/OFF, MANUAL. Default = PID. Select "MANUAL" here. | |
| Back to top | Press SET to return to the main screen. | ||
Parameters relevant to MANUAL control
Press SET in the main screen of DTA to enter the "regulation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| HEPB | 20 | Set up heating or cooling control cycle. Default = heating, 20 seconds per cycle. | |
| CEPA | 20 |
Press [down arrow] in the main screen of DTA to enter the "operation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| r-5 | LOC | Run/stop | |
| 606 | 0 | Manually adjust the output percentage. Assume the percentage value = 50 and the cycle = 20 seconds plus heating control, the system will conduct heating output for 10 seconds and stop for the other 10 seconds. |
2.3 PID
Press SET for 3 seconds in the main screen to enter the "initial setting mode". Press several times until the parameter CEFL is displayed.
| Display | PV | SV | Explanations |
|---|---|---|---|
| CEFL | PCD | Status of the temperature controller. The control modes include: PID, ON/OFF, MANUAL. Default = PID. Select "PID" here. | |
| Back to top | Press SET to return to the main screen. | ||
Parameters relevant to PID control
Press SET in the main screen of DTA to enter the "regulation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| AE | OFF | ON/OFF of auto-tuning | |
| P | 47.6 | Default value for proportional control | |
| I | 260 | Default value for integral control | |
| D | 4 | Default value for derivative control | |
| COF | 0 | Default integral value | |
| HEPA | 20 | Heating/cooling control cycle | |
| EPOF | 0.0 | Temperature inaccuracy adjustment value |
Press [down arrow] in the main screen of DTA to enter the "operation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| r-5 | RUN | Run/stop | |
| LOC | OFF | Key-locked function | |
| 606 | 0 | Output volume. In PID control mode, this is a read-only parameter and cannot be modified. |
CHAPTER 3: CONTROL MODES IN DTB
3.1 ON/OFF
There are four control modes in DTB: ON/OFF, MANUAL, PID and PID PROG. To switch to ON/OFF mode, first press SET for 3 seconds to enter the "initial setting" mode. See below for how to switch between each mode:
A diagram shows mode switching: Press SET to enter Operation Mode. Press SET for more than 3 secs to enter Initial Setting Mode. From Initial Setting Mode, press SET to return to Operation Mode. From Operation Mode, press SET to enter Regulation Mode. Regulation Mode, Operation Mode, and Initial Setting Mode are depicted as distinct states.
| Display | PV | SV | Explanations |
|---|---|---|---|
| Cont | Status of the temperature controller | ||
| Initial Setting Mode Entry | Press SET for more than 3 seconds to enter initial setting mode | ||
| P62 | Select the sensor connected. Default = PT100 | ||
| EPUN | C | Temperature unit. Default = °C | |
| EP-H | 600.0 | Upper limit of temperature range | |
| EP-L | -99.9 | Lower limit of temperature range | |
| CEFL | ANAF | The control modes include: ON/OFF, MANUAL, PID and PID PROG. Default = PID. Select "ON/OFF" here. | |
| 5-HC | HEAL | Select heating/cooling/heating 1 cooling 2/heating 2 cooling 1. Default = heating | |
| ALR1 | 0 | Set up Alarm mode 1. Default = alarm output disabled. | |
| ALR2 | 0 | Set up Alarm mode 2. Default = alarm output disabled. | |
| ALR3 | 0 | Set up Alarm mode 3. Default = alarm output disabled. | |
| SBLR | OFF | Set up system alarm | |
| COSH | OFF | ON/OFF of communication write-in. Default = OFF | |
| C-SL | ASC1 | Select communication format | |
| C-NG | 1 | Communication address | |
| C-LE | 9600 | Communication speed | |
| C-P6 | 7 | Data length (in bits) | |
| P-69 | ELEN | Parity bit | |
| SBLP | 1 | Stop bit | |
| Back to top | Return to the first item in the initial setting mode: CF. Return to PV/SV screen in the operation mode | ||
Parameters relevant to ON/OFF control
Press SET in the main screen of DTB to enter the "regulation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| HES | 00 | Set up hysteresis. Can be set as cooling hysteresis as well. Both default values are "0". | |
| CES | 00 |
3.2 MANUAL
Press SET for 3 seconds in the main screen to enter the "initial setting mode". Press several times until the parameter 6860 is displayed.
| Display | PV | SV | Explanations |
|---|---|---|---|
| CERL | 6860 | Status of the temperature controller. The control modes include: ON/OFF, MANUAL, PID and PID PROG. Default = PID. Select "MANUAL" here. | |
| Back to top | Press SET to return to the main screen. | ||
Parameters relevant to MANUAL control
Press SET in the main screen of DTB to enter the "regulation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| HEPB | 20 | Set up heating or cooling control cycle. Default = heating, 20 seconds per cycle. | |
| CEPA | 20 |
Press [down arrow] in the main screen of DTB to enter the "operation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| r-5 | RUN | Run/stop | |
| SP | 1 | Set up the position of decimal point. 1 = value with decimal point; 2 = value without decimal point | |
| LOC | OFF | Key-locked function | |
| 606 | 0 | Manually adjust the output percentage. Assume the percentage value = 50 and the cycle = 20 seconds plus heating control, the system will conduct heating output for 10 seconds and stop for the other 10 seconds. |
3.3 PID
Press SET for 3 seconds in the main screen to enter the "initial setting mode". Press several times until the parameter CEFL is displayed.
| Display | PV | SV | Explanations |
|---|---|---|---|
| CEFL | PCD | Status of the temperature controller. The control modes include: ON/OFF, MANUAL, PID and PID PROG. Default = PID. | |
| Back to top | Press SET to return to the main screen. | ||
Parameters relevant to PID control
Press SET in the main screen of DTB to enter the "regulation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| AE | OFF | ON/OFF of auto-tuning | |
| P | 47.6 | The 0th default value for proportional control | |
| I | 260 | The 0th default value for integral control | |
| D | 4 | The 0th default value for derivative control | |
| COF | 0 | The 0th default integral value | |
| HEPA | 20 | Heating/cooling control cycle | |
| EPOF | 0.0 | Temperature inaccuracy adjustment value |
Press [down arrow] in the main screen of DTB to enter the "operation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| r-5 | RUN | Run/stop | |
| SP | 1 | Set up the position of decimal point | |
| LOC | OFF | Key-locked function | |
| 606 | 0 | Output volume. In PID control mode, this is a read-only parameter and cannot be modified. |
3.4 PID PROG
Press SET for 3 seconds in the main screen to enter the "initial setting mode". Press several times until the parameter 6860 is displayed.
| Display | PV | SV | Explanations |
|---|---|---|---|
| E-L | P2.5 | Status of the temperature controller. The control modes include: ON/OFF, MANUAL, PID and PID PROG. Default = PID. Select "PID PROG" here. |
DTB offers 8 patterns and 8 steps for each pattern, totaling 64 steps. Range of a pattern: OFF ~ 7. OFF = the function disabled.
| Pattern/Step | SV | Time SV |
|---|---|---|
| Pattern 0, Step 0 | 00.00 | 00:00 |
| Pattern 0, Step 1 | 00.00 | 00:00 |
| ... | ... | ... |
| Pattern 0, Step 7 | 00.00 | 00:00 |
| Parameter | Value |
|---|---|
| Actual number of steps executed in pattern 0 | P520 |
| Actual number of loops executed in pattern 0 | 0 |
| Pattern linked after the execution of pattern 0 is completed. OFF = end of linking patterns | 0 |
Back to top: Press SET to return to the main screen. Return to the main screen to switch to the functions below.
Parameters relevant to PID PROG control
Press SET in the main screen of DTB to enter the "regulation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| PE88 | 00 | The 0th PID parameter. There are 4 groups of PID parameters built in DTB. When the parameter is set ass PID4, the system will automatically adopt the PID value of the current temperature closest to PID0 ~ 3. | |
| 500 | 0.0 | The 0th SV | |
| PO | 47.6 | The 0th default value for proportional control | |
| 260 | The 0th default value for integral control | ||
| 80 | 4 | The 0th default value for derivative control | |
| COF | 0 | The 0th default integral value | |
| HEPA | 20 | Heating/cooling control cycle | |
| EPOF | 0.0 | Temperature inaccuracy adjustment value |
Press [down arrow] in the main screen of DTB to enter the "operation mode".
| Display | PV | SV | Explanations |
|---|---|---|---|
| r-5 | Stop/run/program stop/program hold | Program stop: Run the system again, and DTB will start from the initial step. Program hold: Run the system again, and DTB will follow and start from the previous step. | |
| SP | 1 | Set up the position of decimal point | |
| LOC | OFF | Key-locked function | |
| 606 | 0 | Output volume. In PID PROG control mode, this is a read-only parameter and cannot be modified. |
CHAPTER 4: CONTROL MODES IN DTC
4.1 ON/OFF
There are four control modes in DTC: ON/OFF, MANUAL, PID and PID PROG. Due to that DTC has no display panel, the settings and monitoring of parameters have to rely on communication. Therefore, you have to check the following 2 items to ensure normal communication.
- Make sure RS-485 hardware communication cable in DTC has been connected to the computer.
- Make sure the communication parameters in DTC are consistent with those in the computer.
Next, open DTCOM Software and switch to ON/OFF control mode.
The DTCOM software interface for ON/OFF control is shown. It includes sections for Control (Ctrl. Method: ON-OFF, Run/Stop: Run, Out1: Heat, Out2: Heat, Lock Status: Normal), Input (Input Type: K-Type, Unit: C, SV: 0.0, Range Hi: 1300.0, Range Lo: -200.0, Pointer: 1, F/W Version: 1.40), ON-OFF (Hysteresis 1: 0.0, Hysteresis 2: 0.0), Alarm, and PV tuning (PV Offset: 0.0). Security settings are also present.
A note states: "Set up hysteresis. Default = heating hysteresis. Can be set as cooling hysteresis as well. Both default values are "0"."
4.2 MANUAL
Switch the control mode to MANUAL mode.
The DTCOM software interface for MANUAL control is shown. It includes sections for Control (Ctrl. Method: Manual, Run/Stop: Run, Out1: Heat, Out2: Heat, Lock Status: Normal), Input (Input Type: K-Type, Unit: C, SV: 0.0, Range Hi: 1300.0, Range Lo: -200.0, Pointer: 1, F/W Version: 1.40), Manual (Output 1%: 0.0, Ctrl. Period1: 4, Output 2%: 0.0, Ctrl. Period2: 20, Tune Out High: 0, Tune Out Low: 0), Alarm, and PV tuning (PV Offset: 0.0). Security settings are also present.
Notes: "Set up heating or cooling control cycle. Default = heating, 20 seconds per cycle." and "Manually adjust the output percentage. Assume the percentage value = 50 and the cycle = 20 seconds plus heating control, the system will conduct heating output for 10 seconds and stop for the other 10 seconds."
4.3 PID
Switch the control mode to PID mode.
The DTCOM software interface for PID control is shown. It includes sections for Control (Ctrl. Method: PID, Run/Stop: Run, Out1: Heat, Out2: Heat, Lock Status: Normal, Auto tuning: Stop), Input (Input Type: K-Type, Unit: C, SV: 0.0, Range Hi: 1300.0, Range Lo: -200.0, Pointer: 1, F/W Version: 1.40), PID Parameter (Pb: 47.6, Ti: 260, Td: 41, Ctrl. Period1: 4, Offset: 0.0, Ctrl. Period2: 4), Alarm, and PV tuning (PV Offset: 0.0). Security settings are also present.
A note states: "You can conduct auto-tuning on the default PID parameters according to the environment where your equipment is in or its temperature control capability, allowing the temperature controller to generate relevant PID parameters by itself in order to achieve an accurate temperature control."
4.4 PID PROG
Switch the control mode to PID PROG mode.
The DTCOM software interface for PID PROG mode is shown. It includes sections for Control (Ctrl. Method: Ramp Sc, Run/Stop: Run, Out1: Heat, Out2: Heat, Lock Status: Normal, Auto tuning: Stop), Input (Input Type: K-Type, Unit: C, SV: Time Left, Range Hi: 1300.0, Range Lo: -200.0, Pointer: 1, F/W Version: 1.40), PID Parameter (Pb: 47.6, Ti: 260, Td: 41, Ctrl. Period1: 4, Offset: 0.0, Ctrl. Period2: 4), and a Ramp Soak programmer section.
The Ramp Soak programmer section details patterns and steps. For Pattern 0, Step Max is 7. Set Value 0 to 7 and Execute Time 0 to 7 are listed with default values. Loop Count is 0. Link Pattern is 0.0. The table shows values for Pattern 0 through Pattern 4.
Notes: "The 64 steps come from the combination of 8 patterns and 8 steps for each pattern. You can establish maximum 64 steps according to different systems in use." and "There are 8 steps in each pattern. You can define the step, loop and link pattern in each pattern."
