
·
100
·
Operation Instruction of S900 E Series Inverter
·
101
·
(1) Select sensor/transmitter correctly, for which the standard signal
of 4 – 20mA or 0 – 10V shall be selected as output specification.
(2) Set PID action set point correctly.
(3) Increase proportional constant (P), in case of non-oscillating output.
(4) Decrease integration time (Ti), in case of non-oscillating output.
(5) Increase differential (Td), in case of non-oscillating output.
After
adjustment
Target value
Before
adjustment
Output
Time
1. Restraint output from
exceeding specific value
a: Decrease differential
time (D value)
b: Increase integration time
(I value)
Output
Time
Before
adjustment
After
adjustment
2. Restraint output from
oscillating
a: Decrease differential time
(D value) or set it as 0
b: Decrease the value of
proportional constant (P)
P604
Target
value
Feedback
Converter
P
VVVF
M
I
D
P605
PID upper limit alarm value Initial value :100
Setting range 0.0 – 100%
Unit
0.1
Set the upper limit value. If the feedback value exceeds the setting,