Cooper DF6000 Manual de usuario descargar pdf (Pagina 7)

DF6000 - USER MANUAL

System Design Guidelines

Guidelines

Systems should to the relevant local standards and codes of practice, for the UK this is BS5839 Pt 1.

DF6000 meets all the relevant requirements of BS5839 Pt 1: 2002. Installation planning is simpliﬁed by

the fact that every addressable DF6000 device contains an integral short circuit isolator. Care must be

taken to ensure that local standards requirements regarding aspects such as loop coverage, area

covered by a single spur and cable speciﬁcation are observed.

There may be certain applications in which deviations from the code may be necessary and these must

be listed on the commissioning certiﬁcate. (See commissioning section).

Loop Lengths

The maximum permitted loop length is 2 km measured from the near to the far terminals on the DF6000

motherboard PCB. There is no minimum limit to loop length. Any wiring spurs off the loop must be

included within the 2 km limit. On long loop runs, the lengths of wiring rises and falls (between ﬂoors,

down to manual callpoints) must be included. Remember to include these especially when taking loop

lengths from plan drawings.

Loop Loading - Total Number of Addresses

The total number of addresses per loop is 200. this includes detectors, callpoints and all other

addressable items (e.g. MPU, MIO, loop repeaters etc.) When designing systems its recommended that

allowances are made for future expansion, Short circuit isolators are incorporated into every DF6000 loop

device, including Smoke detectors, heat detectors, sounders, callpoints and interfaces. Therefore, no

further fault protection is required, in the event of a single fault, none of the devices connected to the loop

will fail to operate as the fault will be isolated by the two adjacent devices. Spur connected devices

downstream of a cable fault will cease to function.

DF6000/PR Repeater Panels

Each repeater unit requires one address and consumes no more current from the loop than a smoke

detector. The repeater also requires a local mains supply and incorporates battery backup.

Loop Loading System Veriﬁcation

Unless a loop loading calculation has already been carried out, please contact our technical support

department (01302 303350), before starting installation to verify that a proposed loop loading

arrangement is acceptable.

Section 1 - System Installation and Design

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Cooper DF6000 Manual de usuario Pagina 7