Fujitsu AJ 126LELDH Series Design & Technical Manual page 642

¢ Component location of PCB
KNX connector
¢ Electrical wiring
Master or Slave outdoor unit
¢ Functions
• Indoor unit control
– Individual control
Commands from KNX network are sent to the respective indoor units.
(KNX network → respective indoor units of VRF network)
– Batch control
Commands from KNX network are sent to all indoor units connected to VRF network.
(KNX network → All indoor units of VRF network)
• Indoor unit status monitoring
Indoor unit status is communicated to the KNX network in the form of Lon network variables.
(KNX network ← All indoor units of VRF network)
3-5. KNX converter for VRF (UTY-VKGX)
USB cable connector
General purpose KNX device
Indoor unit
Transmission cable
Outdoor unit
Power supply cable
Transmission cable
to VRF network
VRF Network
connection port
Programming button (Prog Button)
1 Ø 50/60 Hz
220-240 V
KNX cable
(Twisted pair)
TRANSMISSION
This product
KNX cable
- (05-142) -
VRF terminal resister
switch (SET2-1)
Test run switch (SET2-3)
Scan switch (SET2-4)
Convertor address
switch (SET1)
Breaker
Earth
Power supply cable
3. Adaptor/Convertor units