ABB ACH 501 - Page 90

Chapter 6 – Parameters
6-44 ACH 500 Programming Manual
Figure 6-19 shows three examples of actual value scaling.
Figure 6-19 Actual Value Scaling
11 ACT 2 MIN SCALE Refer to Parameter 40.1.9.
12 ACT 2 MAX SCALE Refer to Parameter 40.1.10.
10 V(100%)
8 V(75%)
4 V(25%)
2 V(0%)
0 V 0%
100%
Actual Scaled Actual
10 V(100%)
8 V(80%)
4 V(40%)
0 V(0%) 0%
100%
Actual Scaled Actual
100%
60%
20%
0% 0%
100%
Actual Scaled Actual
Minimum AI 2V/4mA
Act 1 Max Scale 75%
Act 1 Min Scale 25%
Minimum AI 0V/0mA
Act 1 Max Scale 80%
Act 1 Min Scale 40%
Act 1 Max Scale = 20%
Act 1 Min Scale = 60%