Connection Of Power Cables / Earth Wires / Communication Cables - Toshiba BMS-SM1280HTLE Service Manual

6
CONNECTION OF POWER CABLES /
EARTH WIRES / COMMUNICATION CABLES
Connect power cables, communication cables, and earth wires to the specified terminals on the terminal block.
REQUIREMENT
Attach a round pressure terminal to the end of each wire except those for digital input and output.
The power terminals on the central
controller have polarity. Make sure
to connect the cables correctly.
Other wise failure will occur.
Power Supply Unit
1 2 3 4
The TCC-LINK
communication cable
must be earthed on the
air conditioner. Do not
central
connect the shield wire
controller
to the terminal block. It
power cable
should be open and
insulated.
Power supply
220-240V AC
Power
cable
Fix the cable
securely with the
clamp.
TCC-LINK U1 and U2
have no polarity.
The RS-485 signal wire has
polarity A and B. Be careful
when connecting the wire.
TCC-LINK1 TCC-LINK2
U1 U2 FG U1 U2
TCC-LINK communication
TCC-LINK
cable 2
communication
cable 1
Outdoor
Unit
Outdoor
Unit
Indoor Unit
Remote
controller
Remote
controller
Connect the earth wire securely to
the earth terminal on the unit.
15
RS-485
FG A B
Connect the shield
wire of the RS-485
communication
cable to the FG
terminal.
RS-485
communication
Connect to the
cable
Energy Monitoring
relay Interface and
Digital Input / Output
relay Interface
Indoor
Unit
Weekly timer
(sold separately)
LAN cable
Clamp filter
Functional
earth
Connect the functional earth terminal
with the earth near the central controller.
Client PC