Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 484

¢ Electrical wiring
Ethernet cable to BMS
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.
¢ Functions
• 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)
General purpose building control computer
(BMS)
Transmission cable
Indoor unit
Transmission cable
Outdoor unit
BACnet gateway
Power supply
BACnet gateway
- (05-146) -
1Φ 50/60 Hz
208-240 V
Fuse (1.25 A)
Power supply cable
BACnet gateway
C2
RJ45
A B SGND
Indoor unit
Master or Slave
Outdoor unit
Switch
3. Adaptor/Convertor units