Johnson Controls NAE55 Series, Руководство по установке

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3. If using a modem, connect a telephone line to the
modem port or connect an external modem to the
USB A as necessary.
Figure 5: FC Bus Terminal Block and Wiring
Connections
Figure 6: L
ON
W
ORKS
Network Terminal Block
and Wiring Connections
Figure 7: 24 VAC Supply Power Wiring
4. Make connections to the RS-232 serial ports (if
necessary).
5. Connect the 24 VAC supply power wires from the
transformer to the removable power terminal block
plug (
Figure 7 ).
Power supply wire colors may be different on transformers
not manufactured by Johnson Controls. Follow the
transformer manufacturer’s instructions and the project
installation drawings.
The 24 VAC power should be connected to all network
devices so transformer phasing is uniform across the
devices. Powering network devices with uniform 24 VAC
supply power phasing reduces noise, interference, and
ground loop problems.
The NAE55 does not require an earth ground connection.
6 NAE55/NIE55 Installation Instructions