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Chapter 2
Configuration and Installation
© National Instruments Corporation
2-11
SCXI-1160 User Manual
VDC
Inductive Load
+
-
Flyback Diode
V
NO
COM
NC
Figure 2-4. Contact Protection Using a Flyback Diode for DC Inductive Loads
To determine where to place each arc suppressor, refer to Table 2-2 and Table 2-3, which
indicate the channel and suppressor pad assignments.
Table 2-2. COM to NO Arc Suppressor Placement
COM to NO Channel Number
Transient Voltage Suppressor
Reference Designator
0
VR1
1
VR3
2
VR5
3
VR7
4
VR9
5
VR11
6
VR13
7
VR15
8
VR17
9
VR19
10
VR21
11
VR23
12
VR25
13
VR27
14
VR29
15
VR31