Carrier CCU - 14.1 Bus Connection Diagrams

14.1 - Bus connection between the controllers, the gateway and the CMS
+
-
GND
24V
Port B SW B
B1E/A 232 B2 B3
USB
Run / Error
Eth Link/Spd
Port A TX/RX
Port B TX/RX
Button A
Button B
Console
EthernetSW APort A
A1 A2 A3 A4
Power
J10
J10
Green (GND)
Green (GND)
CABINET No.1
CABINET No.2
White (+)
White (+)
Brown (-)
BACnet IP output
ETHERNET RJ-45
BACnet output MSTP
Brown (-)
Modbus:
The distance between the gateway and the last controller must be less
than 1000 metres.
■ A maximum of 1 cabinet can communicate with the BacNet
gateway
■ The communication cable to be used must be:
- AWG24 - 22 type (1 shielded twisted pair)
■ Please note that, beyond a certain distance and depending on the
cabling carried out, it may be necessary to use additional equipment (not
provided - e.g. polarisation device, etc.) It is strongly recommended that
the distance between the gateway and controller is limited.
BACnet IP:
■ The distances must observe the specifications
recommended in the Ethernet IP networks
■ The communication cable to be used must be a
minimum of CAT 6. We recommend using a paired shielded
cable (type S/FTP)
■ The network cable must be a "straight through" type
cable
BACnet MSTP:
■ The communication cable to be used must be: AWG22
type (3 twisted shielded wires). A cable with 2 pairs must also
be used (1 pair for communication and 1 of the 2 wires from
the other pair for shared use)
■ The maximum length of a section is 1500 metres (at
38400 bauds and with a AWG22 cable)
■ The connections on the BACnet MSTP side must
observe the restrictions imposed by the BACnet association
(continuity of shielding, end of line terminating resistors, etc.).
14 - BUS FOR CONNECTION TO A CMS BACNET IP OR MSTP
J10-2
J10-2
J10-3
J10-3
J10-1
J10-1
(-)
(+)
(GND)
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