ABB ACH 501 - Page 98

Chapter 6 – Parameters
6-52 ACH 500 Programming Manual
23 ACTUAL 2 INPUT AI1 OR AI2
24 ACTUAL VALUE SEL The Actual Value for the PI Controller can be a single signal, or two signals
combined by subtraction, addition or multiplication. The choices are as
follows.
ACT1
ACT1-ACT2
ACT1+ACT2
ACT1*ACT2
min(A1,A2)
Actual value is ACT1 or ACT2, whichever is lower.
max(A1,A2)
Actual value is ACT1 or ACT2, whichever is higher.
sqrt(ACT1)
Square root of ACT1.
sqA1+sqA2
Square root of ACT1 + square root of ACT2.
25 ACT 1 MIN SCALE Minimum scaling factor of the Actual Value 1. Setting range is -1600 to
+ 1600%.
0%
The minimum Actual Value corresponds to the minimum scaled Actual Value.
100%
The maximum Actual Value corresponds to the minimum scaled Actual
Val ue.
26 ACT 1 MAX SCALE Maximum scaling factor of the Actual Value 1. Setting range is -1600 to
+1600%.
0%
The minimum Actual Value corresponds to the maximum scaled Actual
Val ue.
100%
The maximum Actual Value corresponds to the maximum scaled Actual
Val ue.