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## Installation Instruction BP 50

General
Supplementary documents
Tools
Declaration of Conformity
How to open the cabinet
Installation
Mounting of the cabinet
Safety and EMC
Safety statement for line connection
EMC
Access to the boards
Board positioning
Mounting the boards
Power Supply Unit BMLBS 101 02/_
Replacement of the power supply unit
Power Supply Unit with Battery Charger BMLBS 101 01/_
External MDF SXK 106 4139/1
Line network
Indoor lines
Outdoor lines

## General

Exchange cabinet BDVBS 101 05 is designed to be furnished with Printed Board Assemblies (hereafter = boards or PBAs) belonging to Ericsson’s PBX-system ASB 150 02. System functions, desired by the customer, are realised with appropriate boards and system programming.

The PBX is powered by a switched mode power supply (SMPS) that is available for two voltage versions. The standard version is an AC/DC converter. The version with battery charger offers the same facility but additionally provides battery back-up or can be powered by an external DC-source.

After installation the PBX shall be made operational in accordance with the stipulations that apply for system ASB 150 02. See document Start of Operation (1537‑ASB 150 02 Uen).The SMPS for 230V is additionally available with power factor correction (PFC).

Due to the limited load of the cabinet’s power supply units, the definitive board configuration in a cabinet must follow the prerequisites mentioned in document Installation Instructions ASB 150 02 (1531‑ASB 150 02 Uen).

### Supplementary documents

- Installation Instructions ASB 150 02 (1531‑ASB 150 02 Uen) for boards, cables and auxilary equipment
- Installation Instruction (1531‑BML BS 101 01 Uen) for the power supply, equipped with battery charger

### Tools

In addition to customary installation tools, the following is recommended:

- Use the appropriate wire tool LSY 138 252 to connect the cables to the external MDF SXK 106 4139/1.
- Board extractor for PBAs (handle LTD 117 02 and bottom LTD 117 12)

## Declaration of Conformity

## How to open the cabinet

Unpack the exchange cabinet.Check that everything has been received according to the delivery note and that nothing has been damaged during the transport.

The cabinet cover is latched. To open reach inside the center cable duct from below and push lever up gently to unlock, then remove the cabinet’s front cover. For details of the bottom view see Figure 2: Bottom view of cabinet BDVBS 101 05.

Figure 1: BDVBS 101 05 Front View

## Installation

The PBX can be delivered as a customer configured unit or the add-in boards can be delivered separately. The cabinet is always equipped with a power supply, suitable for the local mains. Please check the label stating the permitted mains voltage.

The cabinet is to be mounted on an indoor wall. A mains outlet must be provided near the equipment and shall be easily accessible. Connection to earth (refer to Safety and EMC) is necessary for safe operation to discharge lightning strikes. The premises shall comply with the following prerequisites:

- The air shall be free from dust and smoke
- Environmental conditions according to ETS 300 019 (1-4):
  Temperature shall be between + 5˚C and +40˚C and relative humidity may vary between 15% and 80%
- The PBX shall not be exposed to direct sunlight
- Cable shall preferably run into the PBX from below the cabinet to ensure sufficient air flow.

### Mounting of the cabinet

Attach the proper label at the bottom of the cabinet before hanging up the cabinet. The label must comply to the SMPS installed and the local mains voltage level.

Figure 2: Bottom view of cabinet BDVBS 101 05

The cabinet’s wall mounting plate is located on the rear of the cabinet during transport. Take into consideration the normal working height above the floor (about 1.30 m to the lower edge of the cabinet) and leave enough room for access on both sides of the cabinet.

Overall dimensions of the cabinet:

- 400 x 500 x 155 (H x W x D in mm).

Pull out the cabinet’s wall mounting plate, see figure below

Figure 3: Remove wall mounting plate

(A) |  | Turn out the transport screws about 1 cm. Hold the bottom of the shelf, lift the shelf slightly and turn the swivel shelf counter clockwise (ccw).

(C) |  | Remove the screw C below the swivel shelf, to remove the wall mounting plate from the rear side of the cabinet.

Position the mounting plate where you want to mount the cabinet, mark and drill three 8 mm holes. Insert the enclosed wall plugs and screw tight the cabinet’s wall mounting plate.

Figure 4: Wall mounting plate

Finally hang up the cabinet onto the wall mounting plates and secure it again with screw (C).

### Safety and EMC

To fulfil electrical safety requirements IEC 950 and EN 60950, the exchange must be connected to protective earth via a flexible wire with a cross sectional area of at least 6 mm2.

Local requirements shall be adhered to.

The electrical connection must be carried out by authorised personnel.

Figure 5: Ground connection

|  | If the earth is not connected a possible strike of lightning might cause a fire! The wrist strap must have a 1MOhm series protection resistor to comply to the safety standards. If this resistor is missing, then accidentally touching live wires can be lethal. |

#### Safety statement for line connection

All line interfaces in the PBX are protected in accordance with K.21 (voltage transients up to 1.5 kV).

BTU-A, BTU-A2, BTU-B2, BTU-C, BTU-D, BTU-E and MFU are working with interface TNV.

All other boards and the V.24 port work with interface SELV.

#### EMC

The ferrites, with the Ericsson ordering number STF 82 601, should be situated close to the slot where the cables are led out of the cabinet. Two turns through the ferrite core are sufficient to comply with EN 55022 Class B and to avoid disturbances in non-industrial, residential (home) usage.

### Access to the boards

Figure 6: Access to the boards

|  | Make sure that a sound ground connection to the exchange has been established. Otherwise this can be hazardous in case of lightning. Use a grounding wrist strap when handling PBAs sensitive to electrostatic discharges. |

### Board positioning

Refer to document Installation Instructions ASB 150 02 (1531‑ASB 150 02 Uen)

### Mounting the boards

The cabinet is adapted for boards fitted with brackets containing screws. Only boards equipped with these brackets must be installed. These screws must always be fastened to ensure a proper ground connection.

## Power Supply Unit BMLBS 101 02/_

The SMPS for the cabinet are AC/DC switch mode power supplies is available for two mains voltages. Please check whether the label states the proper mains voltage as required.

Following versions are available:

- BML BS 101 02/1
  PSU 230V
- BML BS 101 02/2
  PSU 115V

The PSUs deliver 30 W on the PBA supply voltages and 101 W on the 48 V supply voltage.

|  | The power switch does not disconnect from mains. The mains cord must be unplugged to disconnect the mains. |

The PSU is equipped with a mains fuse rated 250VAC 6,3 A T.

Note

This fuse NGH 258 03/630 can be ordered from Ericsson but is a non-accessible and non-user serviceable part.
Only authorised personnel is allowed to change the fuse. Contact your local Support Centre in this matter.

#### Replacement of the power supply unit

On delivery the PSU is already installed in the cabinet. The procedure of how to dismount the unit is described below.

1. Switch off the PSU (A) and unplug the mains from the wall outlet.
2. Disconnect the DC supply cord (D) from the swivel shelf.
3. Unscrew the transport screw (B).
4. Push the PSU from the bottom and turn out the PSU clockwise, unhinge and take it out. Then pull off the mains plug at the bottom of the PSU and disconnect the ground wire.
5. Install the PSU in the reverse manner.

Figure 7: Locations on the power supply unit

## Power Supply Unit with Battery Charger BMLBS 101 01/_

Following versions are available:

- BML BS 101 01/1
  PSU 230V
- BML BS 101 01/2
  PSU 115V.

When installing a power supply unit with battery charger and the backup battery, please refer to the Installation Instruction (1531‑BML BS 101 01 Uen)

## External MDF SXK 106 4139/1

Unpack the MDF cabinet and remove its front cover.

Mount the MDF cabinet on its designated position. Take into consideration the normal working height above the floor (about 1.30 m to the lower edge of the MDF cabinet) and the length (1.5 m) of prefabricated cable TSR 902 0444/1.

Overall dimensions of the MDF cabinet:

- 295x184x68 (HxWxD in mm).

Figure 8: Mounting of external MDF

1. Loosen cover only by hand force (there are no holding screws)
2. Mark mounting holes for MDF cabinet
3. Drill and insert plugs (Use enclosed screws and plugs)
4. Mount MDF cabinet and screw it securely into position

## Line network

### Indoor lines

The line network for Extensions is to be installed in accordance with the stipulations for standard telephone networks. Twisted pair cables must be used for the lines and a wire diameter of 0.5 mm is recommended in order to reach full line length, i.e. 800 m.

Note

No stubs and/or branches may exist on digital extension lines, as they could cause transmission problems.
For the various connection possibilities between the boards and the MDF only use ERICSSON pre-fabricated cables, see document Installation Instruction ASB 150 02, (1531‑ASB 150 02 Uen)

The cables run into the exchange from below the cabinet. The cables from the line network are led directly to the MDF in the exchange cabinet. Secure the cables to the exchange cabinet with the adhesive anchors and tie wraps.

Place the cables according to the figure.

Figure 8: MDF assembling

### Outdoor lines

Any external lines connected to the PBX that are subjected to excess voltage (transients) in conjunction with e.g. lightning discharges must be equipped with overvoltage protection, refer to Figure 9: Line protection.

The overvoltage voltage protection has to be plugged onto the connection block of the relevant external line in the MDF.

Note

There must be a connection to earth for the MDF cabinet, when overvoltage protectors are used.

Special precautions must also be taken to analogue extension lines that are led outdoors, in order to prevent the analogue extension boards secondary protection device from blowing in case of lightning.

Each branch on the extension line must have:

- A protective resistor of 10 W/1W (REN 195 42/1) connected in series between cabinet and MDF
- An overvoltage protection which has to be mounted onto the connection block in the MDF

Figure 9: Line protection

Depending on the used MDF following overvoltage protections are available:

##### Ericsson Connection block:

- NFD 251 01 Overvoltage protection cassette
- NGC 402 01 Overvoltage arrestors (2pcs per line)

##### Krone Connection block:

- 769 027/3 Overvoltage protection cassette
- NGC 402 01 Overvoltage arrestors (2pcs per line)

Revision: E © Ericsson Enterprise 2004