Fujitsu Airstage AGUA12TLAV1, Design & Technical Manual

Page: 702 / 978

1-6. TERMINAL RESISTOR SETTING
CAUTION
Be sure to set the terminal resistor according to specifications.
Set the terminal resistor for every network segment (NS).
● If terminal resistor is set in multiple devices, the overall communication system may be
damaged.
● If terminal resistor is not set in a device, abnormal communication may occur.
„
●
Be sure to set one terminal resistor in a network segment. You can set the terminal resistor
at the outdoor unit or signal amplifier.
„
● When setting the terminal resistor of a signal amplifier, refer to the installation manual of the
signal amplifier.
„
●
When setting multiple terminal resistors, take note of the following items.

How many network segments are there in a VRF system?

Where will you set the terminal resistors in a network segment?
(Condition for 1 segment: Total number of outdoor and indoor units and signal amplifiers
is less than 64, or the total length of the transmission line is less than 1,640 ft. (500 m))

How many outdoor units are connected in 1 Refrigerant system?
„
●
From conditions

-

, set outdoor unit DIP switch SET5-4 in accordance with the table
below.
DIP SW SET5-4 Terminal resistor Remarks
OFF Disable (Factory setting)
ON Enable -
„ „
SETTING EXAMPLE
NS1 (Network segment 1)
NS2 (Network segment 2) NS3 (Network segment 3) NS4 (Network segment 4)
Slave2 Slave1 Master
Slave2 Slave1 Master
Slave2 Slave1 Master
Refrigerant system1 (Heat Recovery system)
Refrigerant system2 (Heat Recovery system)
Refrigerant system3 (Heat Pump system)
About the setting of
terminal resistor
Outdoor unit (Master unit)
Signal amplifier
:ON
:OFF
Install
Do not install
Terminal resistor : ON
Terminal resistor : ON
Terminal resistor : OFF
- (07 - 55) -
FUN
C
TI
O
N
SE
TTI
N
G
FUN
C
TI
O
N
SE
TTI
N
G