Mitsubishi Heavy Industries 140KXZEN1 Service Manual Download

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126

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Signal line

CASE 1

CASE 2

CASE 3

CASE 4

Refrigerant pipe

Network connector

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

※

Case 1

Case 2

Communication protocol

new SL

previous SL

Address setting method

When only one refrigerant system is involved (signal

lines do not link with plural refrigerant systems)

Indoor unit address setting

000

127[47](*1)

000

31[47]

Indoor unit address setting

31[47]

～

Outdoor unit address setting

0 1

●

Address No. setting

Set SW1 through 4 and SW5-2 provided on the PCB and SW1 & 2 provided on the outdoor unit PCB as shown in the drawings below.

●

Address setting methods

The following address setting methods can be used. The procedure for automatic address setting is different from the conventional one.
Please use the automatic address setting function after reading this manual carefully.

※

1 Do not connect the signal line between outdoor units to A1 and B1. This may interrupt proper address setting. (Case 3)

Do not connect the signal line between indoor unit and outdoor unit to A2 and B2. This may interrupt proper address setting. (Case 4)

※

2 In Case 2, automatic address setting is not available. Set addresses manually.

A1・B1 A2・B2

Ａ
Ｂ

A1・B1 A2・B2

Ａ
Ｂ

A1・B1 A2・B2

Ａ
Ｂ

A1・B1 A2・B2

Ａ
Ｂ

A1・B1 A2・B2

●

Summary of address setting methods (figures in [ ] should be used with previous SL)

(*1) Do not set numbers other than those shown in the table, or an error may be generated.

Note: When units supporting new SL are added to a network using previous SL such as one involving FD

○

△△

KXE4 series units, choose previous SL for the communication

protocol and set addresses manually.

●

An outdoor unit No., which is used to identify which outdoor unit and indoor units are connected in a refrigerant system, is set on outdoor unit PCB and indoor unit PCB.

Give the same outdoor unit No. to all outdoor unit and indoor units connected in same refrigerant system.

●

An indoor unit No. is used to identify individual indoor units. Assign a unique number that is not assigned to any other indoor units on the network.

When plural refrigerant systems are linked with signal lines
(e.g., to implement central control)

Incorrect cable connection

(The signal line between outdoor units is connected to A1 and B1)

Incorrect cable connection

(The signal line between indoor unit and outdoor units is connected to A2 and B2)

Manual address setting

(previous SL/new SL)

Units supporting new SL

Units not supporting new SL

Automatic Manual

Automatic

Manual

SW1 (SW3)

SW2 (SW4)

For ten’s place

For one’s place

By inserting a flat driver

(precision screw driver) into

this groove and turn the arrow

to point a desired number.

Indoor PCB

Outdoor PCB

SW1, 2 (blue)

SW3, 4 (green)

SW5-2

SW1, 2 (green)

For setting indoor No. (The ten’s and one’s)
For setting outdoor No. (The ten’s and one’s)
Indoor No. switch (The hundred’s Place) [OFF : 0, ON : 1]
For setting outdoor No. (The ten’s and one’s)

When signal lines linking plural refrigerant systems are

provided between outdoor units. (When the network connector

is disconnected, refrigerant systems are separated each other.)

When signal lines linking plural refrigerant systems are

provided between indoor units.

Automatic address setting for

multiple refrigerant systems installation

(with new SL only)

Automatic address setting for

single refrigerant system installation

(previous SL/new SL)

Indoor No. switch