Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules - Manual (Page 54)

Installing Block I/O
Chapter 3
3-35
Figure 3.24
Connecting Surge Suppression Devices
snubber
L2/N L1
12346ĆI
GND
BLU
CLR
in 00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
COM
in
NOT
USED
SHD
out 00
out 02
out 03
out 04
out 05
out 06
out 07
NOT
USED
COM
out
out 01
L1
N
COM
out
COM
out COM
in
COM
in
Load
The impedance characteristic is the most important factor in selecting a
suppression device; thus no single suppression device can be
recommended for every possible load. Table 3.C shows acceptable
Allen-Bradley suppression devices and their catalog numbers for
typical loads.
Table 3.C
AllenĆBradley Suppression Devices
Suppression Device Catalog Number
Motor Starter Bulletin 509 599ĆK04 1
Relay Bulletin 700 Type N or P 700ĆN24 1
Miscellaneous 700ĆN24 2
1 Maximum coil voltage 150V ac or dc
2 Bulletin 700ĆN24 is a universal surge suppressor. You can use it on electromagnetic devices with the limitation
of 35 sealed VA, 150V.