Wiring the NIE
Important:
Do not connect 24 VAC supply power to the NIE before finishing wiring and checking all wiring
connections. Short circuits or improperly connected wires may result in permanent damage to the
equipment.
Important:
Use copper conductors only. Make all wiring in accordance with local, national, and regional regulations.
The NIE is a low-voltage device (<30 VAC) in North America and an extra low-voltage device in Europe.
Do not exceed the NIE electrical ratings.
Important:
Do not remove the terminal block keys. The terminal block plugs and the terminal sockets are keyed
to fit together in the correct configuration only.
Important:
Prevent any static electric discharge to the NIE. Static electric discharge can damage the NIE and void
any warranties.
Important:
Ensure the network and field bus wiring meets the specifications, rules, and guidelines in the
Supply, Network, and Communication Connections
section in this document.
Mount the NIE securely before wiring the NIE.
Follow these guidelines when wiring an NIE:
•
Route the supply power wires and communication cables at least 50 mm (2 in.) away from the vent slots on the
sides of the NIE housing.
•
Provide slack in the wires and cables. Keep cables routed neatly around the NIE to promote good ventilation,
LED visibility, and ease of service.
Wiring the NIE for N2, MS/TP, L
ON
W
ORKS
, or Modbus RTU Protocol
1. Connect the Ethernet cable to the RJ-45, 8-pin Ethernet port on the NIE shown in
.
2. If using an external modem, connect the modem to USB A using the proper cable.
3. Connect the Building Automation System (BAS) network cables to the appropriate ports.
For an N2 or MS/TP network, connect the 3-wire bus cable to one of the removable 4-terminal blue plugs
labeled FC Bus (
Note:
If an N2 or MS/TP bus is connected to the NIE, you must set the NIE EOL switches to the proper
positions. See the
Setting the End-of-Line Switch
section. The Modbus RTU network does not require
termination.
•
•
For L
ON
W
ORKS
compatible networks, connect the 2-wire cable from the L
ON
W
ORKS
network trunk to the
removable 3-terminal blue plug labeled LON (
).
Note:
The L
ON
W
ORKS
network trunk is available on the NIE292x-0 model only.
7
NIE29 Installation Instructions
