Fujitsu AIRSTAGE V-II, Design & Technical Data

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665686 TERMINAL RESISTOR SETTING
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 500m)

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
„ „
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. ●
About the setting of
terminal resistor
Terminal resistor : ON
Terminal resistor : ON
Terminal resistor : OFF
Outdoor unit (Master unit)
Signal amplifier
NS1 (Network segment 1)
NS2 (Network segment 2) NS3 (Network segment 3) NS4 (Network segment 4)
:ON
:OFF
Install
Do not install
Slave2 Slave1 Master
Slave1 Master
Master
Refrigerant system1
Refrigerant system2
Refrigerant system3
- (06 - 101) -
SY
ST
EM
DE
SIGN
SY
ST
EM
DE
SIGN