User Manual
EM303A General Purpose Inverter
108
PID feedback signal is input by the analog input terminal. The feedback value can be
operated mathematically based on real needs.
F4-02=0
VF input voltage is PID feedback.
F4-02=1
IF input current is PID feedback.
F4-02=2
VS input voltage is PID feedback.
F4-02=3
IS input current is PID feedback.
No.
Function
Range
Unit
Default
Type
F4-03
PID Monitoring Options
0: Voltage-V
1: Actual Physical Quantity
（
V*Display Coefficient
）
0
〇
F4-04
PID Display Coefficient
0.01~100.00
1.00
●
Setting object and feedback of PID can directly monitor its actual voltage signal
(0.000V~10.000V), and the voltage signal can be converted as the physical quantity
signal through editing the F4-04 parameters.
F4-03
Confirm the display unit of PID setting signal and feedback signal.
F4-04
PID display coefficient is a magnification of actual physical quantity displayed
value against setting and feedback value. Corresponding physical quantity
values (Like temperature, pressure, flow, and etc.) will be displayed on keypad.
The physical quantity value =PID setting/feedback value (0~10.00V) * display
coefficient
1. Only when F4-03 is set as the displayed actual physical quantity, i.e. F4-03
=1, F4-04 enables.
2. PID setting signal is displayed by monitoring code C0-22. PID feedback
signal is displayed by monitoring code C0-23.
No.
Function
Range
Unit
Default
Type
F4-05
PID Positive/Negative
Setting
0
：
Positive Setting
1
：
Negative Setting
0
〇
F4-05=0
Positive setting, i.e. error and output are positive.
F4-05=1
Negative setting, i.e. error is positive, output is negative.
z
When feedback signal is greater than the setting value of PID, the output
frequency of inverter is required to drop in order to reach PID balance. Take
water supply as an example. If the pressure increases, the feedback of pressure
increases. The output frequency of inverter needs to drop for reducing pressure
and keeping pressure constant. PID should be in positive setting at mean time.
z
When feedback signal is greater than the setting value of PID, the output
frequency of inverter is required to rise in order to reach PID balance. Take
temperature control as an example, PID regulator should be under negative
setting control.
Содержание EM303A-011G/015P-3CB
Страница 15: ...User Manual EM303A General Purpose Inverter 15 Figure 1 1 Speed Setting Modes...
Страница 16: ...User Manual EM303A General Purpose Inverter 16 Figure 1 2 Torque Input Modes...
Страница 23: ...User Manual EM303A General Purpose Inverter 23 Figure 2 4 Disassemble the Keypad Figure 2 5 Assemble the Keypad...
