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E
The connected power cable should be secured with a wire clamp to prevent loosening, as shown in the figure.
2. Power cable system connection
Power cable system connection depends on the forms of communication between the IDU and ODU. For the
HyperLink communication form with independent power supply, IDUs are allowed to have independent power supply.
For other communication forms, IDUs should be provided with uniform power supply.
A
IDUs are provided with independent power supplies*, which are wired as follows:
For HyperLink communication with independent power supply:
Master ODU
CN23
M1
M2
L1
Power supply for IDU
×
×
Circuit breaker
CN1
M1
M2
CN10
L
N
IDU 1#
TO DOWN IDU
M1
M2
CN2
CN3
M1
M2
TO UP IDU
HyperLink repeater 2
L21
Power supply for IDU
× ×
Circuit breaker
CN1
M1
M2
CN10
L
N
IDU 21#
[ Caution ]
When the IDUs are provided with independent power supplies, the IDUs in the same refrigerant system should be V8
IDUs*, and the communication between IDUs and ODU adopts a HyperLink with an independent power supply.
This connection method has the function of an independent power supply, so in the same refrigerant system, the
number of IDUs must not exceed 30 sets, and a maximum of only two repeaters may be installed*.
One repeater shall be added for every 10 IDUs or a communication distance of 200m added.
La
···
IDU 2-9#
Ly
Power supply for IDU
× ×
CN1
M1
M2
CN10
L
N
IDU 20#
Lc
···
IDU 22-28#
Connecting
insulation sleeve
Circular
crimping
terminal
Power supply for IDU
× ×
Circuit breaker
CN1
M1
M2
CN10
L
N
IDU 10#
Lb
Circuit breaker
···
IDU 12-19#
L30
Power supply for IDU
× ×
Circuit breaker
CN1
M1
M2
CN10
L
N
IDU 29#
44
Installation
Power cable
and ground
cable
The stripped part of the cable
should not exceed 25mm
(or should not extend past the
electric control box)
Communication wire
Power cable
Lx
TO DOWN IDU
M1
CN2
M1
M2
TO UP IDU
HyperLink repeater 1
L11
Power supply for IDU
CN1
M1
M2
L
N
CN10
IDU 11#
Power supply for IDU
CN1
M1
M2
L
N
CN10
IDU 30#
M2
CN3
Circuit
× ×
breaker
Circuit
× ×
breaker
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