Shihlin electric SL3 Series, User Manual

Page: 139 / 211

PID parameter group 08
PARAMETER DESCRIPTION 135

After increasing the proportional gain, if the output response is still slow, increase the differential gain;
If the output is unstable, reduce the differential gain (KD=08-06(P.174)).
Note: 1. When 08-09(P.177)=2, there is no alarm display on the keypad, multi-function digital output terminal output a
signal. After the inverter stops, the digital output terminal is automatically off.
5.9.3 PID pressure range setting

Set the range of PID target and feedback.
Parameter Name Default Setting Range Content
08-43
P.251 PID pressure range
(Bar) setting
100.0
1.0~100.0 Set the range of PID target and feedback
PID pressure range

The setting of the PID target value can be %, bar, Kg, etc. Set 08-43 (P.251) if need the setting of the PID target
value corresponds to the dimension of the actual system, generally set as feedback system sensor range.

For example: If the pressure sensor feedback range is 0~10V, the corresponding pressure range is 0~16.0bar,
then 08-43 (P.251) set 16.0, and 08-03 (P.225)=8.0, then 00- 07 (P.161) = 3 (monitor target pressure) monitoring
is: 8.0.
5.9.4 PID analog signal feedback loss

Used to detect whether the PID feedback is disconnected.
Parameter Name Default Setting Range Content
08-45
P.253 Analog signal feedback
loss detection time
0.0
s
0.0~600.0 s
Set the time of feedback disconnect detection, set to 0 to
turn off the function
08-46
P.254 Analog signal feedback
loss action selection
0
0 Alarm AErr and inverter stop freely
1 Slow down to stop then alarm AErr
2 Alarm AErr and continue operation
PID disconnection function

Set 08-45 (P.253) to a non-zero value, when inverter is running, PID feedback disconnect exceeds the time set in
08-45 (P.253), inverter react as action set in 08-46 (P.254).

Set 08-45 (P.253) to 0, the feedback disconnection detection function is off.
Note: This function is only suitable for 4-20mA terminal 3-5 signal type.
Setting
Setting