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Chapter 7. Usage of Various Functions
7-33
Process
ⓑ
reaction curve method(PRC method).
•
PID parameters are obtained by step response of process.
•
It is useful fo r time 1
st
order time delay system expressed as following
1
+
−
Ts
e
K
Ls
•
Obtained parameters may not accurate if the process can’t approximated to 1
st
order system, In this
case, use relay response method.
ⓒ
PWM Tuning
PWM (Pulse Width Modulation) is a output method which changes on-off duty of output pulses by
calculated manipulation value. The figure below shows an example of PWM output. Using PWM output,
PID control system can be constructed easily without D/A conversion module and power regulator. The
output can be designated when PWM is selected, but only main unit’s contacts can be used for PWM
output. (The expansion module’s cannot be used.)
5) Program example
(1)
System configuration
80% of SV
MV
4000
Time delay(L)
63% of SV
Time constant(T)
GMWIN
V4.1 above
RS-232C
TPR
Heater
Electric Oven
(PV: temperature)
(MV: 4~20mA)
GM7U
G7F-DA2I
G7F-
RD2A
Содержание GLOFA G7M-DR20U
Страница 28: ...Chapter 4 Names of Parts 4 3 2 G7M DRT60U N 3 G7M DT60U N 4 G7M DT60U P...
Страница 29: ...Chapter 4 Names of Parts 4 4 5 G7M DR60U DC 6 G7M DRT60U N DC 7 G7M DT60U N DC...
Страница 30: ...Chapter 4 Names of Parts 4 5 8 G7M DT60U P DC 4 1 2 40 point main unit 1 G7M DR40U 2 G7M DRT40U N...
Страница 31: ...Chapter 4 Names of Parts 4 6 3 G7M DT40U N 4 G7M DT40U P 5 G7M DR40U DC...
Страница 32: ...Chapter 4 Names of Parts 4 7 6 G7M DRT40U N DC 7 G7M DT40U N DC 8 G7M DT40U P DC...
Страница 33: ...Chapter 4 Names of Parts 4 8 4 1 3 30 point main unit 1 G7M DR30U 2 G7M DRT30U N 3 G7M DT30U N...
Страница 34: ...Chapter 4 Names of Parts 4 9 4 G7M DT30U P 5 G7M DR30U DC 6 G7M DRT30U N DC...
Страница 35: ...Chapter 4 Names of Parts 4 10 7 G7M DT30U N DC 8 G7M DT30U P DC 4 1 4 20 point main unit 1 G7M DR20U...
Страница 36: ...Chapter 4 Names of Parts 4 11 2 G7M DRT20U N 3 G7M DT20U N 4 G7M DT20U P...
Страница 37: ...Chapter 4 Names of Parts 4 12 5 G7M DR20U DC 6 G7M DRT20U N DC 7 G7M DT20U N DC...
Страница 38: ...Chapter 4 Names of Parts 4 13 8 G7M DT20U P DC...
Страница 159: ...Chapter 7 Usage of Various Functions 7 52 c Program...
Страница 183: ...Chapter 7 Usage of Various Functions 7 76 c Program...
Страница 253: ...Chapter 8 Communication Functions 8 27 b When uses Ch 1 Built in RS 485...
Страница 355: ...Appendix 1 System Definitions App1 8 5 PID parameters 1 PID Auto Tuning Parameter 2 PID Parameter...
Страница 356: ...Appendix 1 System Definitions App1 9 6 Position Parameter...
Страница 357: ...Appendix 1 System Definitions App1 10 7 High Speed Counter Parameter...