National Instruments CMS-9068, Поддержание работоспособности оборудования

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4. Tighten the grounding screw to 0.5 N · m (4.4 lb · in.) of torque.
5. Attach the other end of the wire to the grounding electrode system of your facility using a
method appropriate for the application.
Note
If you use shielded cabling to connect to a C Series I/O module with a plastic
connector, attach the cable shield to the chassis grounding terminal using
1.3 mm
2
(16 AWG) or larger wire. Attach a ring lug to the wire and attach the wire
to the chassis grounding terminal. Solder the other end of the wire to the cable
shield. Use shorter wire for better EMC performance.
For more information about ground connections, visit ni.com/info and enter the Info Code
emcground
.
Wiring Power to the Controller
The cRIO-9068 requires an external power supply that meets device specifications. The
cRIO-9068 filters and regulates the supplied power and provides power for all I/O modules
installed in the chassis. The cRIO-9068 has one layer of reverse-voltage protection.
The following figure shows the terminal screws, which secure the wires in the screw terminals,
and the connector screws, which secure the power connector on the front panel.
Figure 13. COMBICON Power Connector
C
V2
C
V1
2
1
2
1. Terminal screws
2. Connector screws
Complete the following steps to connect a power supply to the chassis.
1. Connect the positive lead of the power supply to the V1 or V2 terminal of the
COMBICON power connector installed on the front panel of the cRIO-9068 and tighten
the terminal screw.
2. Connect the negative lead of the power supply to one of the C terminals of the power
connector and tighten the terminal screw.
3. Optionally, connect the positive lead of another power supply to the other V terminal and
the negative lead to one of the C terminals.
16 | ni.com | Maintaining NI CMS-9068, MMS-9068, and EMSA-9068 Hardware for an NI InsightCM Device