Important :
Utiliser ce MS-NxE35xx-x or MS-NAE45xx-x uniquement en tant que dispositif
de contrôle de fonctionnement. Lorsqu'une défaillance ou un dysfonctionnement du NAE35/
NAE45 risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou un
autre équipement, la conception du système de contrôle doit intégrer des dispositifs de
protection supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres
dispositifs, tels que des systèmes de supervision ou d'alarme, ou des dispositifs de sécurité ou
de limitation, ayant une fonction d'avertissement ou de protection en cas de défaillance ou de
dysfonctionnement du NAE35/NAE45.
Important:
The network engine is a low-voltage (<30 VAC) device. Do not exceed the network
engine electrical ratings. Applying high voltage to the network engine may result in permanent
damage to the network engine and void any warranties.
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 network engine. Static electric
discharge can damage the network engine and void any warranties.
Be sure to follow these wiring guidelines:
• Route the supply power wires and communication cables at least 50 mm (2 in.) away from the
vent slots in the sides of the network engine housing.
• Provide slack in the wires and cables. Keep cables routed neatly around the network engine to
promote good ventilation, LED visibility, and ease of service.
• Ensure that the building automation network wiring meets the specifications, rules, and
guidelines as outlined in the
Power supply, network, and bus connections
engine does not require an earth ground connection.
• Follow the transformer manufacturer’s instructions and the project installation drawings. Power
supply wire colors may be different on transformers not manufactured by Johnson Controls.
• While connecting network devices to 24 VAC power, make sure that transformer phasing is
uniform across all devices. Powering network devices with uniform 24 VAC supply power phasing
reduces noise, interference, and ground loop problems.
Wiring the NAE for N2, MS/TP, or Modbus RTU network
1. Connect the Ethernet cable to the RJ-45, 8-pin Ethernet port on the NAE shown in Figure 1.
2. Connect the field equipment cables to the appropriate ports as follows:
- For an N2, MS/TP, or Modbus RTU network, connect the 3-wire bus cable to the
removable 4-terminal blue plug labeled FC Bus (Figure 4).
- For Modbus RTU Protocol that uses the RS232C B serial port, use a cable to connect the
RS-232/RS-485 converter to the RS232C B serial port on the NAE. The maximum cable
length between devices connected though an RS-232 line depends on the baud rate
used. In general, it should not exceed 15 meters at 9600 baud.
NAE35/NAE45 Installation Guide
8
