00:00 intro
00:20 class start PID
05:15 PID program start
07:37 PID parameter setup
PID =
GPWM = General Pulse Width Modulation
PWM = Pulse Width Modulation
PV (process value/process variable), SV/SP (set value) and MV (manipulated output value) can be transferred to other measuring instruments. A cost corresponding to one temperature sensor can be reduced just by connecting a PV transfer signal to a recorder.
Temperature PID:
Step1, Read RAW Data of Temperature form Delta Analog input
Step2, Display Temperature Unit= 0.1 = 10
Digital RAW Data/ 10
Digital RAW Value MAX: 2000, MIN 0
Temperature: 200, MIN 0
Analog input Chanel1: Sensor Connected, and CR#6
Step3, Configure PID Instruction
Step4, Configure GPWM
Heater Output: Y0
Blower Output: Y1
D0 = Digital RAW Value, Max = 2000
D2 = Actual Temperature Value, MAX =200 C
PID = 16 bit
DPID = 32 bit
SV = D410
Setup PID MOD = D412
PV = D0
MV = D4, Pulse Width Reference
D4 = Pulse Width
D6 = Pulse Output Cycle
Y0 = Heater output
S3 = D500
S3.0 = D500
S3+1 = D501
S3+2 = D502
S3+3 = D503
S3+4 = D504 = PID Cont.MOD
Delta DVP PLC PID Mod Setting
0: Automatic control
1: Forward control (E = SV - PV).
2: Reverse control (E = PV - SV).
3: Auto-tuning of parameter exclusively for the temperature
control. The device will automatically become K4 when
the auto-tuning is completed and KP, KI and KD is set with
appropriate value (not available in the 32-bit instruction).
4: Exclusively for the adjusted temperature control (not
available in the 32-bit instruction).
5: Automatic mode with MV upper/lower bound control.
When MV reaches upper/lower bound, the accumulation
of integral value stops.
7: Manual control 1: User set an MV. The accumulated
integral value increases according to the error. It is
suggested that the control mode should be used in a
control environment which change more slowly.
19 фев 2024
