Johnson Controls CVE03050, Руководство по установке

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Figure 9: Transformer grounding
CAUTION
Risk of Property Damage:
Do not apply power to the system before checking all
wiring connections. Improper wiring of this terminal
may cause a short circuit across the 24 VAC power
supply. A short circuit may result in a tripped circuit
breaker or blown fuse. If using a transformer with a
built-in fuse, the transformer may need to be replaced.
ATTENTION
Risque de dommages matériels:
Ne mettez pas l’appareil sous tension avant d’avoir
vérifié toutes les connexions du câblage. Le câblage
inadéquat de cette borne peut causer un court-
circuit sur l’alimentation électrique de 24 V c. Un
court-circuit peut causer le déclenchement du
disjoncteur ou le grillage d’un fusible. Si vous utilisez
un transformateur avec un fusible intégré, vous
pourriez devoir remplacer le transformateur.
To wire the controller, complete the following steps:
1. Terminate wiring according to the appropriate figure
in Termination diagrams .
2. Wire network sensors and other devices to the SA
Bus.
3. For the CVM model, wire the FC Bus in a daisy
chain. For CVE models, connect the controller to
the BACnet/IP building automation network. See
BACnet/IP Ethernet Network Topology for CVE
controllers for details.
4. Ensure that the CVM03050 is assigned a device
address and the CVE03050 is assigned a controller
number, using the rotary switches. See Setting the
device address on CVM models .
5. Connect the controller to 24 VAC, Class 2 power.
Note: If you are using the CVM03050 controller with
the Wireless Field Bus System, refer to the WNC1800/
ZFR182x Pro Series Wireless Field Bus System Bulletin
(LIT-12012320) or the ZFR1800 Series Wireless Field Bus
System Bulletin (LIT-12011336) .
Terminal wiring guidelines, functions,
ratings, and requirements
This section provides further guidelines on input and
output wiring, maximum cable length versus load current,
and SA Bus and supply power wiring.
For information about removing a terminal block from the
controller, see Removing a terminal block .
Input and Output wiring guidelines
Table 5 provides information and guidelines about the
functions, ratings, and requirements for the controller
input and output terminals, and Table 5 also references
guidelines for determining proper wire sizes and cable
lengths.
In addition to the wiring guidelines in Table 5, observe the
following guidelines when wiring controller inputs and
outputs:
• Run all low-voltage wiring and cables separate from
high-voltage wiring.
• All input and output cables, regardless of wire size or
number of wires, must consist of twisted, insulated,
and stranded copper wires.
• Shielded cable is not required for input or output
cables but is recommended for input and output cables
that are exposed to high electromagnetic or radio
frequency noise.
• Cable runs of less than 30 m (100 ft) often do not
require an offset in the input/output software setup.
• Cable runs over 30 m (100 ft) often require an offset in
the input/output software setup.
M4-CV Series VAV Box Controllers Installation Guide 7