ABB ControlIT 53MC5000 Instruction Manual page 182

Table 5-14. System Module
Title
This parameter dictates the number of groups that the display list represents. In the pop-up
locator grid, this parameter represents the number of columns in the matrix. Valid numbers are
from 1 to 8. When B017 contains a 1, F1 is the page forward push button and F2 is the page
Number of backward push button. When B017 contains a number greater than 1, F1 is the next group push
Groups button and F2 is the next display push button.
An example would be a two loop controller (CON0 and CON1) where it is desirable to have
three display groups (three display grid columns): datapoint B017 would be configured to 3.
This parameter is the number of displays contained within each group. Each group must have
the same number of displays. In the pop-up locator grid, this parameter represents the number
Number of of rows in the matrix. Valid numbers are from 1 to 8.
Displays An example would be a two loop controller (CON0 and CON1) where it is desirable to have
Per Group three display groups, each containing three displays (three display grid columns and three
display grid rows): datapoint B017 above = 3 and datapoint B018 would also be configured to 3.
Loop Select Control Module Selector (CON-0 = 0, CON-1 = 1, CON-2 = 2, CON-3 = 3)
PID Control Mode
Control 1 - P, 2 - PI, 3 - PID, 4 - PD
Mode If the ratio of Process Dead Time (Wp) and Process Time Constant (Tp) is greater than 0.5, then
this datapoint should be set to 3 for PID Control Mode.
Limit Settling This parameter corresponds to the time, in seconds, allowed for the process to settle and for the
Time preliminary step-response to be detected.
PV
Maximum Allowable Excursion of PV in EASY-TUNE (%)
Excursion
Setting C380 will prevent excessive change in PV.
Limit
Step Size Change in Controller Output (± %)
Output Step
Set large enough to cause significant but allowable PV changes. (See C378 above.)
Excursion Limit for Preliminary Step Disturbance (%)
Preliminary
The step size chosen for C381 will cause a PV change which depends on the process gain as
PV Step
well as C381 itself. C378 should be set to approximately 1/4 of that expected change. (See
Disturbance
C381 below.)
Definition
6 of 6
Atom Data- De-
point fault
MDG B017 1
MDS B018 5
LPS B385 0
CM B386 0
TLIM C387 0
DPV C380 0
DOUT C381 0
DPPV C378 2