Rockwell Automation 1772-LV,D17726.6.1 A and I MNL MINI-PLC-2/15 PROCESSO - Manual (Page 24)

Assembly and Installation
Chapter 3
3Ć4
Figure 3.3
Typical Suppression for Large AC Inductive Load
10111ĆI
0.47
220 W
m f
Electrocube
Part No. RG1676Ć14
V130 LA1
Discrete Component Equivalent
General Electric MOV (Metal Oxide Varistor)
120V AC
CR4
Figure 3.4
Typical Suppression for Small DC Inductive Load
10112-I
+
V DC
-
PIV (Peak Inverse Voltage) rating of diode
must be at least twice the applied DC voltage
All possible sources of noise should be suppressed. Best results are achieved
when the noise-suppressing networks are connected as closely as possible to the
“noisy” device.