¢
Electrical wiring
Fuse (1.25 A)
Outdoor unit
Switch
Transmission cable
General purpose building control computer
(BMS)
Power supply cable
Master or Slave
Outdoor unit
1Φ 50/60 Hz
208-240 V
BACnet gateway
Indoor unit
C2
RJ45
A B SGND
BACnet gateway
BACnet gateway
Power supply
Ethernet cable to BMS
Indoor unit
Transmission cable
NOTES:
•
Do not bind the power supply cable and transmission cable to avoid an erroneous operation.
• Use shield cable for transmission cable. The shield metal should be grounded.
• Do not forget to ground the BACnet gateway.
¢ F
unctions
• Indoor unit control
–
Individual control
Commands from BACnet network are sent to the respective indoor units.
(BACnet network → respective indoor units of VRF network)
– Batch control
Commands from BACnet network are sent to all indoor units connected to VRF network.
(BACnet network → All indoor units of VRF network)
• Indoor unit status monitoring
Indoor unit status is communicated to the BACnet network in the form of BACnet objects.
(BACnet network ← All indoor units of VRF network)
3-6. BACnet gateway (Hardware: UTY-VBGX) - (05-146) - 3. Adaptor/Convertor units
CONTROL
SYSTEM
CONTROL
SYSTEM
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