National Instruments Fieldpoint CFP-2220 - Manual (Page 19)

© National Instruments Corporation 19 cFP-2200/2210/2220
2. Install a tie wrap or other device on the power wires to secure the ferrite
in place near the controller power connector, as shown in Figure 24.
Figure 24. Ferrite Installed with Tie Wrap
3. Connect the positive lead of the power supply to the V1 terminal of the
COMBICON connector shipped with the cFP-22xx.
4. Connect the negative lead of the power supply to one of the C terminals
of the COMBICON connector.
5. Optionally, connect the positive lead of another power supply to the
V2 terminal and the negative lead to one of the C terminals of the
COMBICON connector.
6. Install the COMBICON connector on the front panel of the cFP-22xx.
Note The controller draws power from either V1 or V2 depending on which terminal has
a higher voltage. It does not draw power from both terminals. The controller switches
between V1 and V2 without affecting operation. If the output voltages of the two power
supplies are within 0.1–0.6 V of each other, the cFP-22xx can use either supply.