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Fire Alarm Control Panel IQ8Control C / M

78 FB 798951.10.GB0 / 04.15

7.1.10 FOC transmission line in the essernet

Alternatively, the essernet

can be set up with fibre optic cables. Optional fibre-optic converters are required for

this.

This FOC converter (Part No. 784763 / 784764 / 784765) converts electrical signals into optical signals for reliable

data transmission under difficult transmission conditions in which, for example, copper cables cannot be used. It

is possible to use both FOC and conventional copper cable within one network simultaneously. The connection

of fire alarm system control panels through FOC requires at least one FOC converter and one essernet

module

per FACP. Depending on the type of fibre optics used, FOCs can be used to connect two fire alarm control panels

spaced a max. of 3,000 metres apart. The FOC converter can optionally be supplied with the FOC connection

type F-ST (Part No. 784763) or F-SMA (Part No. 784764).

The FOC converter must be fitted directly inside the control panel housing or the same control cabinet as the

housing. When doing so, the FOC converter must be fitted directly to the DIN rail (Part No. FX808387) without

using any additional fastening material.

essernet

FOC

Fibre Optics Link

Fig. 66: Schematic wiring of an fibre optics cable

Please refer to the manual (Part No. 798636 / 798963.10) for detailed information about fibre optic

wirings.

Requirements / restrictions



Each loop segment needs to be equipped with two multimode optical fibres.

 The fibres must be connected directly and without interruption

(e.g. they cannot be connected using multiplexers).

 Fibre type G50 / 125 µm, with a max. attenuation of 6 dB, corresponds to a max. length of approx. 2000 m and

fibre type G62,5 / 125 µm, with a max. attenuation of 9 dB, corresponds to a max. length of approx. 3000 m.

 Maximum of 16 FOC lines per essernet

when using a transmission speed of 62,5 kBd.

 Maximum of 31 FOC lines per essernet

when using a transmission speed of 500 kBd.

7.1.11 Specification

Main voltage : 24 V DC

Quiescent current : 37 mA

Weight : 100 g

Dimension (w x h x d) : 27 x 93 x 113 mm

Honeywell ESSER IQ8Control M User Manual

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