Rockwell Automation Allen-Bradley PowerFlex 20P - Page 110

110 Rockwell Automation Publication 20P-TG002B-EN-P - February 2018
Appendix A Schematics
Figure 19 - Encoder Control Circuit Diagram
Figure 20 - DC Tachometer Control Circuit Diagram
ENC
1
2
3
4
5
6
7
8
A+
A-
B+
B-
Z+
Z-
COM
+V
S21
12V
5V
S21
+24V
S21
S21
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
Voltage Regulator and
Current Feedback Circuit
S4-8
M3 -
M3 +
S4-7 S4-6
S4-1 S2 S4-3
TACHOP
S4-5
S4-4