Delta MS300 Series User Manual page 407

Chapter 12 Descriptions of Parameter SettingsMS300
00-20
Master Frequency Command Source (AUTO, REMOTE)

Settings
03-00
AVI Analog Input Selection

03-01
ACI Analog Input Selection

Settings
Common applications for PID control:
1.
 Flow control: Use a flow sensor to feedback the flow data and perform accurate flow
control.
 Pressure control: Use a pressure sensor to feedback the pressure data and perform
precise pressure control.
 Air volume control: Use an air volume sensor to feedback the air volume data to achieve
excellent air volume regulation.
 Temperature control: Use a thermocouple or thermistor to feedback temperature data for
comfortable temperature control.
 Speed control: Use a speed sensor to feedback motor shaft speed or input another
machine speed as a target value for synchronous control.
PID control loop:
2.
K Proportional Gain (P), Ti Integral Time (I), T
P
Concept of PID control:
3.
 Proportional gain (P):
The output is proportional to input. With only a proportional gain control, there is always a
steady-state error.
0: Inputs from digital keypad
1: Inputs from RS-485 communication
2: Inputs from external analog (refer to Pr.03-00, Pr.03-01)
3: Inputs from external UP / DOWN terminals
4: Pulse inputs without direction command
(refer to Pr.10-16 without direction)
5: Pulse inputs with direction command (refer to Pr.10-16)
6: CANopen communication card
8: Communication cards (CANopen card not included)
4: PID target value
5: PID feedback signal
Differential Time (D), S Calculation
d
398
Default: 0
Default: 0