ABB Busch Watchdog Alarmtech 220 Manuale utente

Introduction 4

Principle of operation 5–12

System – Surveillance Areas 13–14

Special features of the 15–19

Busch Watchdog Professional/Alarmtech

Interference factors 20–21

Fields of application 22–23

Installation 24–27

Product features/product overview 28–31

Busch Watchdog range 32–35

Examples of typical circuits 36–43

Troubleshooting 44–46

Table of contents

A reliable infrared movement

detector offers additional

protection. It ensures that

nobody can enter its surveil-

lance zone without activating

the lights. As a result, unin-

vited guests draw attention

to themselves and can be

readily observed.

This acts as a deterrent.

A passive infrared movement

detector registers the move-

ment of a heat source and

switches on the connected

lighting. When the surveil-

lance zone is vacated, the

lighting is switched off again

after a specified delay time.

• The Busch Watchdog is a

passive infrared movement

detector. It registers invis-

ible infrared heat radiation.

• If the registered energy

pattern changes as the

result of movement, a

pulse is activated. The

strength of the pulse

depends on the intensity

of the infrared radiation

and on its direction of

movement.

Introduction Principle of operation

• The Busch Watchdog is

purely a receiver and trans-

mits no signals itself. The

connection between the

heat source and the Busch

Watchdog is the ambient

air. Under certain

circumstances, the recep-

tion conditions are influ-

enced by the prevailing

weather conditions. As

a result of the highly

intelligent electronics,

the Busch Watchdog can

recognise this and largely

compensates for ambient

range fluctuations.

Detection through

obstacles such as glass or

vegetation is not possible.

Principle of operation

Wall-mounted

Busch Watchdog

Professional/Alarmtech

Ceiling-mounted

Busch Watchdog

Professional/Alarmtech

Corner-mounted

Busch Watchdog

Professional 280

Corner adapter

With the corner adapter

(order no. 6886), the unit can

be fitted to a house corner.

The detection principle

All bodies with internal heat

emit infrared radiation. The

sensors used in the Busch

Watchdog can detect this

infrared radiation. The more

distinct the radiation in rela-

tion to the surrounding area,

i.e. the colder the outside

temperature, and the more

intensive the radiation of the

detected body, the larger the

sensor signal.

The Busch Watchdog reacts

to large, rapid changes in

temperature. Slow temper-

ature changes and constant

temperatures, such as the

cooling of a car engine, do

not activate the device.

If a person moves directly

towards the sensor, the

increase in heat intensity is

slow, and the unit does not,

therefore, activate imme-

diately. Where possible, the

device should therefore be

fitted at a right angle to the

likely direction of move-

ment to ensure reliable

activation. Humid air (for

example fog) can reflect the

infrared radiation, resulting in

a reduced device sensitivity.

•Sensitivity (E)

The Busch Watchdog has

three sensitivity level

settings. The standard level

is E. The higher level, E+,

is intended, for example,

for indoor applications,

and level E–, has a reduced

sensitivity for a busy

environment (trees or

bushes).

•Dusk setting (N)

Definition of the activity of

the device depending on the

ambient brightness in

operating mode N (0.5 to

1000 lux, daylight mode).

•Test/standard operation

(T/S)

In this operating mode, the

shortest time setting of two

seconds always applies in

the daytime to define the

surveillance zone irrespec-

tive of the set delay time.

After the test phase, the

Watchdog automatically

changes back to the

Standard operating mode.

Connection and settings

The watchdog is connected

with the wall-mounted bracket

and simply screwed onto the

fixing surface. To match the

Busch Watchdog Professional

220/280 and Alarmtech 220

units perfectly to the ambient

conditions, the following

variables are externally

adjustable:

•Operating modes

With the operating mode

selector, the numerous

functions of the Busch

Watchdog Professional

220/280 and Alarmtech 220

can be selected easily and

clearly.

•Time setting

Specifies the delay time

during which the light

remains on after the sur-

veillance zone is vacated.

In addition to the exact time

setting, a short-time pulse

( ), for example for actua-

ting an audible alarm, is

issued.

Principle of operation

The delay time of three

minutes and the light level

of 4 lux are fixed.

•Comfort and

vacation (K-U)

This operating mode

combines the functions of

a movement detector and

those of a conventional

dusk switch. The con-

nected lighting is initially

switched on for 80 minutes

at dusk. Over the next 24

hours, the Busch

Watchdog measures the

ambient light and "learns"

the time of year. The fixed

delay time is then adjusted

accordingly (e.g. extended

in autumn/winter). At the

end of this permanent light

phase, the device reverts

to normal detection.

T/S

K-U

E-

E+

15 51min

sek

1110

Principle of operation

•The masking strips

With the masking strips,

areas that are not to be

monitored can be specif-

ically excluded from the

surveillance zone. The

masking strips can also

be used to adjust the sur-

veillance range for distinct

surveillance zones.

The optical system

The range and detection

angle of a movement sensor

are determined mainly by its

optics – i.e. the arrangement

and design of the sensors

used and of the lens.

In the Busch Watchdog

Professional 220, three

highly-sensitive sensors in

combination with a mirror

system and the perfectly

matched lens result in a

detection angle of 220

degrees.

The lens and the mirror

system receive and bundle

the infrared radiation and

project it onto the sensor.

The sensitivity to movement

within the detection zone is

determined mainly by the

number of lens segments

and their optical design. The

available range depends on

the size of the lens segments

(optical magnification) and the

electrical amplification factor.

The lens system of the

Busch Watchdog, which is

permanently connected to

the sensor housing to provide

a good seal for the unit, has

an exceptionally high reso-

lution for movement

detectors.

The possibility of monitoring

"backwards" beyond the

frame without loss of frontal

range, for installation directly

above doors or windows, is

also unique. This is especially

convenient when leaving the

house.

The following factors should

be taken into account at the

planning stage:

• Most frequent direction of

movement of an "object" in

relation to the mounting

location

– Most readily detected is

movement which is

diagonal to the detection

levels (see fig. on p. 6).

• Mounting height of 2.5 m

– This height ensures an

optimum monitoring

function and forms the

basis of the range

specifications.

1312

Principle of operation System

The microprocessor

The use of a microprocessor

to control the Busch

Watchdog provides a series

of valuable features:

• Range stabilisation in

a variety of weather

conditions

• Inadvertent operations

such as movement of

trees,wind, etc. are largely

filtered out

• Dazzleproof e.g. against car

headlights and torches

• Short-time pulse, e.g. for

staircase timer switch

• Precise digital time and

dusk setting

• Selectable comfort and

vacation mode

• Continuous light through

break switch

• Intelligent alarm function

(separate surveillance

zone)

220° 90°

280°

The detection angle

Additional protection for

windows and doors up to the

wall of the house, even in

case of installation directly

above doors and windows,

is provided by the integral

rearfield detection.

With its many mounting

and alignment options, the

Busch Watchdog can be

adapted to suit the optimum

local conditions.

1514

System Special features of the Busch Watchdog

Professional 220/280

The detection range is

affected by the following

factors:

• Installation site and height

• Horizontal and vertical

alignment

• Direction of movement in

the detection zone

• Local weather conditions

The surveillance density

and range

A high surveillance density is

crucial to guarantee the

detection quality of a move-

ment detector. In the Busch

Watchdog, up to 464 closely

packed, large-area switching

segments monitor the sur-

veillance zone in up to 116

sectors. This large number of

operating points guarantees

reliable switching even for

small movements. Its wide

range of up to 16 m at the

front and to both sides is

unique.

Rearfield detection

Range up to 12 m

Busch Watchdog Professional 90

Busch Watchdog Alarmtech 220

Busch Watchdog Professional 220

Busch Watchdog Professional 220 EIB

Busch Watchdog Professional 280

Rearfield detection

Security zone up to 6 m

Range up to 16 m

In addition to the basic

functions, the Busch

Watchdog Professional offers

numerous advantages in day-

to-day operation.

The various detection

levels

To fully cover the surveillance

zone, the Fresnel lens splits

the zone into several over-

lapping levels.

Level 4 covers the rearfield

detection, which activates

when the front door is

opened from the inside. (for

installation over door frame,

see figure on page 11).

Level 3 covers close-range

detection to prevent unde-

tected entry of the surveil-

lance zone close to the wall.

Levels 1 and 2 cover remote

surveillance and ensure

seamless detection when the

surveillance zone is entered

from the outside.

Detection zone 220°

Detection zone approx. 280°

1716

Rearfield detection

Security zone up to 6 m

Range up to 16 m

Busch Watchdog Alarmtech 220

Range

Special features of the Busch Watchdog

Alarmtech 220

Alarm function

The security provided by the

Busch Watchdog Alarmtech

220 is unsurpassed. The light

gives anyone approaching the

house the impression that

they have been seen. This is

made possible with the

additional security zone. The

range of the security zone is

about six metres to the front

and to both sides.

If someone enters this inner

zone, the red warning light is

activated (can be switched

off with the optional remote

control) and a signal applied

to an additional output, which

can be used, for example, to

activate a second light or

another signalling device.

Remote control

The main functions can be

controlled with a hand-held

infrared remote control unit.

• Light On/Off (for four

hours; then the detector

returns to automatic

mode).

• Automatic On

• Alarm On/Off

(warning light On/Off)

• Comfort/vacation

function On/Off

• Save dusk value

1918

Special features of the Busch Watchdog

Professional 220/280 and Busch Watchdog Alarmtech 220

Automatic range

stabilisation

The range normally fluctuates

between 50 and 100%

depending on the prevailing

ambient conditions.

The Busch Watchdog

recognises the ambient

conditions. A built-in micro-

processor with intelligent

software then controls the

internal amplification to

reduce weather-induced

range fluctuations to a

minimum.

Automatic interference

suppression

This is another feature made

possible by the built-in micro-

processor of the Busch

Watchdog.

External light protection

With the dusk sensor set to

"dark", the Busch Watchdog

could be deactivated by a

light source (torch or car

headlights).

To avoid this situation and

therefore increase security,

the Busch Watchdog leaves

its current monitoring function

unchanged for 90 seconds if

the light conditions suddenly

change.

High-capacity relay

To allow the connection of

high loads without needing

an additional auxiliary relay

high capacity relays have

been used which guarantees

a long service life of the unit.

Test function

To simplify adjustment during

installation, the delay time is

set to two seconds in the

Test position. The dusk

sensor is then disabled.

Once the desired setting has

been found after testing the

settings, select the desired

delay time and the dusk value

to complete the installation.

Self-test

A further advantage of the

microprocessor used in the

Busch Watchdog

Professional 220/280 and

Busch Watchdog Alarmtech

220 is its built-in test

function.

Every time the supply voltage

is connected or a restart

occurs, an internal test pro-

gram carries out a complete

self-test. If this test is

positive, the Busch

Watchdog switches itself on

for at least one minute or the

set delay time. This confirms

that the device is fully

operable.

If, for example, the detector

switches on due to sunlight,

wind and moving branches,

the detection logic recognises

this and suppresses many of

the unwanted operations by

adjusting the operating mode.

2120

Interference factors

Inadvertent operation

The principle of operation of

a passive infrared movement

detector means that its func-

tion depends on the physical

conditions in the detection

zone.

When heat sources move

and the response threshold

of the Busch Watchdog is

exceeded, operation is trig-

gered. Sunlight has a high

percentage of natural infrared

radiation. If the sun shines,

for example, onto a bush or a

tree in the detection zone and

this bush or tree moves in

the wind, this may cause a

movement detector to trigger.

Sunlight reflecting off glass or

water, a heat source cooling

down (e.g. a lamp mounted

nearby) or animals in the

detection zone can also

trigger detection.

Mains voltage peaks, caused,

for example, by switching

inductances such as relays

and contactors on and off,

can also activate a movement

detector. This can be pre-

vented by using surge volt-

age protectors or a special

RC element. For further

information about this, see

the troubleshooting section.

Range fluctuations

In extreme weather condi-

tions, the size of the detec-

tion zone may change. High

outside temperatures and

poor visual conditions due to

fog, rain or snow can tem-

porarily reduce the range.

Excessively long ranges are

caused by close-by sources of

extreme heat, such as lorries

or buses, and at very low

outside temperatures and

good visual conditions. It is

important here to set the

detection range to the

required distance during

installation by adjusting the

angle of the Busch Watchdog

sensor and, if necessary, by

using Busch Watchdog

masking strips.

The automatic range stabil-

isation of the Busch

Watchdog counteracts the

effects described above, but,

for physical reasons, it cannot

guarantee a complete elim-

ination of all unwanted

switching operations under

all conditions.

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