WEG CFW501 V1.8X, Руководство по программированию, Страница: 172 / 192

HVAC Functions
18-14 | CFW501
18
P1027 – Minimum Level for Process Variable of the Main PID Controller
Adjustable
Range:
-32768 to 32767
Factory
Setting:
0
Properties:
Access groups
via HMI:
HVAC
Description:
This parameter defines the minimum value of the analog input sensor configured for process variable of the
main PID controller according to its engineering unit.
NOTE!
This parameter will be viewed according to the selection of the parameters for the engineering unit
1 (P0510 and P0511).
P1028 – Maximum Level for Process Variable of the Main PID Controller
Adjustable
Range:
-32768 to 32767
Factory
Setting:
1000
Properties:
Access groups
via HMI:
HVAC
Description:
This parameter defines the maximum value of the analog input sensor configured for process variable of the
main PID controller according to its engineering unit.
NOTE!
This parameter will be viewed according to the selection of the parameters for the engineering unit
1 (P0510 and P0511).
Through the minimum and maximum sensor levels of the process variable and the value of analog input(s) Aix, we
obtain the equation of the curve to convert the process variable of the main PID controller.
P1015 [(P1028 - P1027) x (AIX)] + P1027
Where:
P1015 = Process Variable of the main PID controller;
P1027 = Minimum level for process variable of the main PID controller;
P1026 = Maximum level for process variable of the main PID controller;
AIX = Value of the analog input(s) according to P1026.