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5–9 Dual Set Point/PID
The TEC-9300 will switch between the two PID sets based on the
process value, the set point, or either of the event inputs. As the
control ramps up to the higher process value, the process charac-
teristics change. When this happens, the original PID values are
no longer valid. To achieve optimal control over the entire range,
a second PID set is used.
Example 1: Single set point/dual PID
A heat treating furnace is used over the range of 400°C to 1200°C.
1. Set the following parameters in the setup menu:
FUNC = FULL
A1FN = PV1H
A1MD = NORM
EIFN = PID2
PVMD = PV1
SPMD = MINR
2. Adjust the following parameters in the user menu:
A1SP = 800°C
A1HY = 1.0°C
PL1 = 100(%)
RAMP: According to the process requirement
SP1: According to the process requirement
3. Tune the first PID set at SP1=50°C and tune the second PID set
at SP1=1100°C, or set the proper values for PB1, TI1, TD1,
PB2, TI2, and TD2 directly according to previous records to
eliminate the auto-tuning sequence.
The circuit diagram and its temperature profile are shown as fol-
lows:
Example 2: Dual set point/PID
A heat treating furnace is required to harden the mold at a high
temperature (1000°C) for 30 minutes, then the mold is cooled
down with a programmable ramp (20°C/minute) to a lower set
point (200°C). Use the dual set point/PID and ramp/dwell func-
tions for this application.
1. Set the following parameters in the setup menu:
FUNC = FULL
A1FN = TIMR
EIFN = SP.P2
PVMD = PV1
SPMD = MINR
2. Adjust the following parameters in the user menu:
TIME = 30.0 (minutes)
RAMP = 20.0 (°C/minute)
SP1 = 1000°C
SP2 = 200°C
PL1 = 100(%)
3. Set the proper values for PB1, TI1, TD1, PB2, TI2, and TD2
directly according to previous records. For a new system, tune
the first PID set at SP1 = 800°C and tune the second PID set at
SP2 = 400°C.
The circuit diagram is the same as shown in figure 5.14. The tem-
perature profile is shown below:
- Instruction Manual 1
- TEC-9300 1
- Self-Tune Fuzzy / PID Process 1
- Temperature Controller 1
- Chapter 1 Overview 5
- Related Products 6
- 1–2 Ordering Code 6
- Figure 1. Access Hole 7
- Overview 7
- Table 1.1 DIP Switch 7
- Configuration 7
- 1–4 Keys and Displays 8
- 1–6 System Modes 11
- 1–7 Parameter Description 12
- Chapter 2 Installation 19
- 2–6 Thermocouple Input Wiring 20
- 2–4 Power Wiring 20
- 2–7 RTD Input Wiring 21
- 2–8 Linear DC Input Wiring 21
- 2–10 Event Input wiring 23
- 2–11 Output 1 Wiring 24
- 2–12 Output 2 Wiring 25
- Figure 2.19 RS-232 Wiring 28
- 3–1 Input 1 29
- 3–2 OUT1 and OUT2 Types 30
- 3–3 Configuring User Menu 30
- 3–4 Heat Only Control 30
- 3–5 Cool Only Control 31
- 3–6 Heat-Cool Control 32
- 3–7 Dwell Timer 33
- 3–8 Process Alarms 34
- 3–9 Deviation Alarm 35
- 3–10 Deviation Band Alarm 36
- 3–11 Heater Break Alarm 37
- 3–12 Loop Break Alarm 37
- 3–13 Sensor Break Alarm 38
- 3–14 SP1 Range 38
- 3–15 PV1 Shift 38
- 3–16 Failure Transfer 39
- 3–17 Bumpless Transfer 40
- 3–18 Self tuning 40
- Self-tune Menu 40
- 3–19 Auto tuning 41
- 3–20 Manual Tuning 42
- 3–21 Signal Conditioner 43
- DC Power Supply 43
- 3–22 Manual Control 43
- 3–23 Display Mode 44
- 3–25 Reload Default Values 44
- 4–1 Event Input 45
- 4–2 Second Set Point 45
- 4–3 Second PID Set 46
- 4–4 Ramp and Dwell 46
- 4–5 Remote Set Point 47
- 4–6 Differential Control 47
- 4–7 Output Power Limits 48
- 4–8 Data Communication 48
- 4–9 Analog Retransmission 49
- 4–10 Digital Filter 49
- 4–11 Sleep Mode 49
- 4–12 Pump Control 50
- 4–13 Remote Lockout 50
- Chapter 5 Applications 51
- 5–3 Heat Only Control 52
- 5–5 Heat-Cool Control 53
- 5–4 Cool Only Control 53
- 5–6 Ramp and Dwell 54
- 5–7 Remote Set 55
- 5–8 Differential Control 55
- 5–9 Dual Set Point/PID 56
- 5–10 RS-485 57
- 5–11 RS-232 58
- 5–12 Retransmit 58
- Chapter 6 Calibration 59
- Troubleshooting procedures: 61
- Chapter 8 Specifications 65
- PID: Fuzzy logic modified 66
- 9-1 Functions Supported 67
- 9-2 Exception Responses 68
- 9-3 Parameter Table 69
- P= 100.0 80
- 9-3 Communication Examples 80
- A–1 Menu Existence Conditions 81
- A–2 Factory Menu Description 84
- A–3 Glossary 85
- A–4 Memo 89
- A–5 Warranty 91
- TEMPCO’s Visionary Solutions 92
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