Shihlin electric SL3 Series, User Manual

Page: 137 / 211

PID parameter group 08
PARAMETER DESCRIPTION 133
2. Needs to calibrate the feedback signal
Adjust the feedback signal to a certain value, calculate the ratio of this value to the feedback range, and then
write this ratio value to 08-18 (P.223);
Re-adjust the feedback signal to another value and calculate the ratio of this value to the feedback range, and
then write this ratio value to 08-19 (P.224).
Example 1: Feedback range is 0~10kg
Adjust the feedback signal to 4kg, then write 08-18 (P.223) = (4 / 10) * 100.0 = 40,
Adjust the feedback signal to 6kg, then write 08-19 (P.224) = (6 / 10) * 100.0 = 60.
Note: The user must connect the actual feedback signal for this type of calibration, and must set 08-00 (P.170) = 2
before performing the calibration.
Invert
convertor
Output
frequency
5 3
IM
U/T1
W/T3
V/T2
feedback
quantity
R/L1
S/L2
+
-
Target
value
K
I
=P.173
K
P
=P. 172
K
D
=P. 174
+
+
+
limit
P.182
PID
module
e(t)
Feedback
value
filter
T/L3

When output frequency reaches 01-03 (P.3) * 08-14 (P.182), the feedback value < target value * 08-07 (P.175),
and the duration exceeds 08-08 (P.176) , PID is considered abnormal, and it will be handled according to 08-09
(P.177) value.
Example: Set 08-07(P.175)=60%, 08-08(P.176)=30s, 08-09(P.177)=0, 01-03(P.3) = 50Hz, 08- 14(P.182)=100%,
when the output frequency reaches 50Hz, the feedback value is lower than 60% of the target value and lasts for
30s, inverter alarms and stops freely.
Target
feedback
value
Feedback
value
Max frequency
08-10
（
P.176
）
0Hz
Time
Time