AUMA EPAC - Page 31

31
ROCEDURE TO TUNE SOLID STATE CONTROLS
Default setting:
SL.NO
PARAMETER
OPEN SIDE
CLOSE SIDE
1
P band
5%
5%
2
H band
0.5%
0.5%
3
Duty Cycle
1 sec
1 sec
CLOSE LIMIT
OPEN LIMIT
0
%
Start P –
BAND
P band: in this the cycle time will vary
depending on the error value i.e. SV-PV
100
%
Start
H– BAND = ±0.5% (SP)
PV Process
Value
SP = 50%
H – BAND
P – BAND
SV
Fig.1: Example for Close to open direction with Set Point 50%