© National Instruments Corp. 3 cFP-RLY-421
Figure 1. Installing the cFP-RLY-421
Wiring the cFP-RLY-421
The cFP-CB-x connector block has connections for each of the
eight cFP-RLY-421 relay channels and for an external supply to
power field devices. If you are using the cFP-RLY-421 in a
hazardous voltage application, you must use the cFP-CB-1
connector block or a suitable hazardous voltage cable. A hazardous
voltage is a voltage greater than 42.4 Vpeak or 60VDC.
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
Each relay channel of the cFP-RLY-421 has two terminals:
oneNO (normally open) and one IC (isolated common).
1 cFP I/O Module
2 Captive Screws
3 cFP Controller Module
4 Screw Holes
5 cFP Backplane
4
4
3
2 1
5
5