Important:
Use copper conductors only. Make all wiring in accordance with local, national,
and regional regulations.
Important:
Electrostatic discharge can damage controller components. Use proper
electrostatic discharge precautions during installation, setup, and servicing to avoid damaging
the controller.
For detailed information on configuring and wiring an N2 Bus, refer to the
N2 Communications Bus
Technical Bulletin (LIT-636018)
.
FX-PCV terminals and bus ports
See Figure 3 for input and output terminal and bus port locations on the FX-PCV18 Series
controllers. Observe the following guidelines when wiring an FX-PCV18 controller.
Input and Output terminals
The input spade terminals are located on the side of the FX-PCV near the N2/FC Bus terminal block.
The output spade terminals are located on the opposite side of the controller near the power
supply spade terminals. See Table 4 for more information.
N2/FC bus terminal block
The N2/FC Bus terminal block is a blue, removable, 4-terminal plug that fits into a board-mounted
jack.
Wire the removable N2/FC Bus terminal block plugs on the FX-PCV and other field controllers in a
daisy-chain configuration using 3-wire twisted, shielded cable as shown in Figure 4. See Table 5 and
Table 6 for more information.
Figure 4: N2/FC bus terminal block wiring
Note:
The Shield terminal (SHLD) on the N2/FC Bus terminal block is isolated and can be used
to connect the cable shields on the bus (Figure 4).
7
FX-PCV1826/1832 Programmable VAV Box Controller Installation Instructions