Mount the network engine securely before you wire it. For details, see Mounting.
CAUTION
ATTENTION
WARNING
Avertissement
Important: Use this SNE only as an operating control. Where failure
or malfunction of the SNE could lead to personal injury or property damage to the controlled
equipment or other property, additional precautions must be designed into the control system.
Incorporate and maintain other devices, such as supervisory or alarm systems or safety or
limit controls, intended to warn of or protect against failure or malfunction of the
SNE.
Important : Utiliser ce SNE uniquement en tant que dispositif de
contrôle de fonctionnement. Lorsqu'une défaillance ou un dysfonctionnement du SNE 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
SNE.
Important:
- Do not apply power to the network engine before you complete and check connections. Short circuits or incorrectly connected wires may result in permanent damage to the equipment.
- Use copper conductors only. Make all wiring in accordance with local, national, and regional regulations.
- The network engine is a low-voltage device. Do not exceed the network engine electrical ratings. Applying high voltage to the network engine will void any warranties and may result in permanent damage.
- 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.
- Prevent any electrostatic discharge (ESD) to the network engine. Static electric discharge can damage the network engine and void any warranties.
Follow these guidelines when you wire the network engine:
- 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 in Wiring considerations and guidelines.
- 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®.
- Verify that transformer phasing is uniform across the devices. Powering network devices with uniform 24 VAC supply power phasing reduces noise, interference, and ground loop problems.
- Do not connect the network engine to an earth ground connection.