Figure 9.
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.
Install the ferrite provided with the controller across the negative and positive leads of the
power supply, approximately 50–75 mm (2–3 in.) from the ends of the leads near the
controller, as shown in the following figure.
Figure 10.
Installing a Ferrite on the Power Supply Wires
2.
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-9024 and tighten
the terminal screw.
3.
Connect the negative lead of the power supply to one of the C terminals of the power
connector and tighten the terminal screw.
4.
Optionally, connect the positive lead of another power supply to the other V terminal and
the negative lead to one of the C terminals.
5.
Tighten the connector screws.
Precautions to Take When Wiring Power to the
Controller
Note
If you connect power to both the VI and V2 terminals, ensure that the voltage
difference between the two power inputs, measured at the controller power
connector, is at least 500 mV.
Note
The controller draws power from either the V1 or V2 terminals depending on
which terminal has a higher voltage. The controller does not draw power from both
Maintaining NI CMS-9024 Hardware for an NI InsightCM System
|
© National Instruments
|
11