Toshiba BMS-IFMB0TLR-E Installation Manual page 2

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MB Interface

Safety instructions

WARNING

Follow carefully these safety and installation instructions. Improper work may lead to serious harmful for your health and also may damage seriously the interface

and/or the Air-conditioning unit.

• This interface must be installed by accredited technical personnel (electrician, installer, or technical personnel) and following all the safety instructions.

• Before manipulating the Air-conditioning unit, be sure it is completely disconnected from Mains power.

• Do not modify the unit. (A fire or an electric shock may occur)

• This interface must only be installed in a restricted access location by user.

• Do not install the unit in any of the following places.

• Humid or wet place

• Dusty place

• Place exposed to direct sunlight

• Place where there is a TV set or radio within one meter

• Place exposed to rain (outdoors, under eaves, etc.)

• Use predefined cable and connect them certainly. Keep the connecting terminal free from external force.

It may cause an exothermic or a fire.

• Strip the insulation from the cable that connects to the connector (RS-485 and A B bus) following the dimensions shown in the diagram below.

• When connecting the cable to the connector (RS-485 and A B bus), ensure the core wires do not protrude from the connector.

• Use two-core cabtyre cable.

Installation instructions

• Disconnect the Air-conditioning from Mains Power.

• Fix the interface beside the Air-conditioning (wall mounting) following the instructions in the diagram below or install it inside the Air-conditioning (respect the

safety instructions given above).

• Connect the interface to A B bus in any point of the bus. The A B bus is the bus that connects the Air-conditioning unit, and the wired remote controller, is a two-

wire bus connecting terminals A B of both, this A B connection has no specific polarity.

• Connect the RS-485 bus to the connector RS-485 of the interface.

• Close the Air-conditioning unit and reconnect it to Mains Power.

• Follow the instructions on the user manual for configuring and commissioning the interface.

• Follow the instructions of the next page to configure the interface through on-board DIP-switches.

NOTE

The cable used for connection of BMS-IFMB0TLR-E to A B bus can be any two-core cabtyre cable, the maximum distance for bus A B is 300 meters, consult the

manual of the Air-conditioning for more details.

Respect the maximum distance of 500 meters for the bus, no loop or star topologies are allowed for RS-485 bus, a terminator resistor of 120 Ω must be present at

each end of the bus to avoid signal reflections and also a fail-safe biasing mechanism.

IMPORTANT:

• Use only one remote controller. A sub-remote controller cannot be connected when connecting this interface.

Indoor unit

NOTE

In its place there is a pair of cables to connect the Remote Controller. Use these cables to connect the AB bus. Check your Air-Conditioning user or service manual

for more information.

-EN

Remote Control

Internal Block in

the indoor unit.

Max. 300 m

Connection to A B bus.

Two-core cabtyre cable.

Length of stripped RS-485 and A B bus communication

cable

(20 mm)

53 mm