3ec37533nbaatqzza05

Fan Unit (with Dust Filter) AFAN-H NB

3EC 37533 NBAA TQZZA Ed 05 Released 1 / 10

1 Identification 2

2 Introduction 2

3 Features and Application Notes 2

4 General Description 3

5 Mechanical Description 5

6 Fan Unit and Control Board 7

7 Fan Unit Characteristics 9

8 Dust Filter Characteristics 10

AFAN-H NB Fan Unit (with Dust Filter)


1 Identification

Table 1 provides identification of the AFAN-H:

Table 1: Unit Identification

2 Introduction

This document describes the fan unit version H with dust filter.

3 Features and Application Notes

The AFAN-H unit provides the following features:

Provides forced air cooling in a 7302 Intelligent Services Access Manager (ISAM) FD subrack or a 7360 ISAM FX-16 subrack.

Contains eight fixed-speed fans Is mounted in the subrack fan area Supported nominal voltages: -48Vdc Contains a fan unit control board, which provides an alarm interface to the NT board

via the backplane Is secured to the subrack by screws Is field-replaceable and can be hot inserted Is connected to the subrack backplane via two 15-pin male Sub-D connectors. Equipped with dust filter (code 1AD014270005), for use in CO environment. This

dust filter must be removed when the shelf is used in closed (cabinet-like) environments where such a filter is not applicable and where higher ambient temperatures (higher than 45C) are expected.

Is available in two versions: Metal version: 3EC 37533 NBAA Plastic version: 3EC 37533 NBAC

Part Number Mnemonic Name

3EC 37533 NB AFAN-H Fan unit version H with dust filter



4 General Description

The AFAN-H contains eight fixed-speed fans to cool the plug-in boards in the ISAM subrack assembly. Figures 1 and 2 give an overall view of the AFAN-H units.

Figure 1 AFAN-H Overall View (Metal Version)

Figure 2 AFAN-H Overall View (Plastic Version)

AIRFLOW

Alarm LED

AIRFLOW

Alarm LED



The AFAN-H must be mounted in the fan area of the subrack.

When there is a malfunction of a fan blower, the fan alarm LED will turn red. Under normal operating conditions, the fan alarm LED is not illuminated.

To prevent damage or system shutdown caused by overheating equipment following precautions must be taken (refer to the 7302 ISAM FD Hardware Installation manual or the 7360 ISAM FX Hardware Installation manual for specific instructions).

The AFAN-H must always be properly installed and operational before powering any equipment in the subrack.

The AFAN-H must never be put out of operation for a longer time than specified in the 7302 ISAM FD Hardware Installation manual and the 7302 ISAM Safety Manual or the 7360 ISAM FX Hardware Installation manual and the 7360 ISAM FX Safety manual.

Figure 3 shows the functional diagram of the AFAN-H.

Figure 3 AFAN-H Functional Diagram

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ALM

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ALMx302

x301

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EFCU

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ALM

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Subr

ack

Bac

kpla

ne



5 Mechanical Description

Figure 4 shows the AFAN-H (metal version) and Figure 5 shows the AFAN-H (plastic version).

Figure 4 AFAN-H Unit Views (Metal Version)



Figure 5 AFAN-H Unit Views (Plastic Version)

DimensionsThe fan has following dimensions:

Height: 60 mm Width: 494 mm Depth: 280 mm

Weight

Metal version: 4.9 kg Plastic version: 3.1 kg

Front PanelA single red alarm LED is located in the fan unit front panel. The LED is red in case of fan failure. The LED is not illuminated during normal operation.



6 Fan Unit and Control Board

The fan unit alarm and control board provides the following functionality:

Provides fused power interface towards the different fans Generates a common fan alarm output towards the NT boards (with integrated ACU

functionality) is case of fan failure Provides for EMC/EMI filtering

The backpanel contains the connectors that plug into the subrack backpanel (see Figures 6 and 7).

Figure 6 Backpanel Connectors (Metal Version)

Figure 7 Backpanel Connectors (Plastic Version)

Table 2 describes the layout of the left hand-side connector to the fan unit.

BKKathode (-)

RDAnode (+)

Backplane connectors

Dustfilter

BKKathode (-)

RDAnode (+)

Backplane connectors

Dustfilter



Table 2: 15-Pin SUB-D Connectors to Fan Unit (Left)

Table 3 describes the layout of the right hand-side connector to the fan unit.

Table 3: 15-Pin SUB-D Connectors to Fan Unit (Right)

Signal Name Type Pin Nr. Description

FAN_ALM0_A I 1 'FAN-Unit 0' Alarm (A wire)

FAN_ALM0_B I 9 FAN-Unit 0' Alarm (B wire)

FAN_ALM1_A I 2 FAN-Unit 1' Alarm (A wire)

FAN_ALM1_B I 10 'FAN-Unit 1' Alarm (B wire)

FAN_BATRET Ref 8 FAN Battery Return Voltage


FAN_BATA O 7 FAN Battery Supply Voltage, branch A

FAN_BATB O 14 FAN Battery Supply Voltage, branch B

FAN_VAR0_A O 3 Not used

FAN_VAR0_B O 11 Not used



FAN_SP0 - 5 Not used










FAN_BATA O 7 FAN Battery Supply Voltage, branch A

FAN_BATB O 14 FAN Battery Supply Voltage, branch B








Table 4 describes the layout of the fan connector.

Table 4: Layout for Fan Connector

Table 5 describes the connector layout for LED connection.

Table 5: Layout for LED Connection

7 Fan Unit Characteristics

The fan unit has the following characteristics:

Maximum (free air) air flow: 8 x 172 m3/h = 1376m3 per hour (-48 Vdc) Voltage range: -40 Vdc to -57 Vdc Power consumption:

at -40 Vdc: 42.12 W +/- 5% at -48 Vdc: 60.12 W +/- 5% at -57 Vdc: 85 W +/- 5%

L-10 lifetime at ambient temperatures of 40C: Metal version: 75000 h Plastic version: 70000 h

Operating temperature range: -40C to +70C Storage temperature range: -40C to +75C Flammability according to UL94V-0 Acoustic noise sound power level (at 25C ambient and at 48Vdc): 75dB(A).



Pin Function

1 POWER (+48V)

2 Tacho CONTROL SIGNAL (output)

3 GND

4 Function control (input)

Pin Function

1 FrontLed +

2 A48VL -




8 Dust Filter Characteristics

The dust filter (code 1AD014270005) has the following characteristics:

Made from non-woven synthetic material with a minimum dust arrestance of 80%. Initial pressure

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