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Installation Instruction 66571764GB3 Fire Detection 31

Schneider Electric Pelco Finland Oy Kalkkipellontie 6, 02650 Espoo, Finland Telephone: +358 10 446 511 Fax: +358 10 446 5103 www.pelco.com/nordic

Document Number 66571764GB3 16 2012

12.5 Compatible detectors and manual call points

Compatibility of detectors with the CLC conventional line is determined by the following factors:

- Supply voltage range

- Current consumption in standby condition

- Voltage across the detector in alarm condition

- Series resistance (either in the detector or in the base)

- End-Of-Line resistor

The voltage supplied by the CLC to the conventional line is 21 Vdc to 24 Vdc. The maximum allowable voltage

drop in the cable is 21 V minus the lowest operating voltage of the connected devices.

If the line goes through an Exi barrier, the maximum allowed cable resistance and current consumption is less than

for a normal line.

The following table shows the required series resistor for a number of detector voltages (in alarm condition), the

two allowed EOL types and whether or not a Exi barrier is connected to the loop.

Conventional Line

EOL resistor / Exi

4k7, 5% / not Exi

2k94, 1% / not Exi

4k7, 5% / Exi

2k94, 1% / Exi

Max. cable resistance

100 Ω

50 Ω

Max. detector load

1.8 mA

4.0 mA

1.5 mA

3.0 mA

Threshold voltage over

detector / allowed serial

resistance in alarm

condition

8 V / 50 - 1000 Ω

8V / 50 - 550 Ω

8 V / 10 - 700 Ω

8V / 10 - 320 Ω

5 V / 110 - 1300 Ω

5 V / 110 - 750Ω

5 V / 150 - 1050 Ω

5V / 170 - 550 Ω

3 V / 140 - 1500 Ω

3 V / 150 - 880Ω

3 V / 250 - 1250 Ω

3V / 280 - 710 Ω

1 V / 180 - 1700 Ω

1 V / 190 - 1010Ω

1 V / 340 - 1500 Ω

1V / 380 - 880 Ω

0 V / 200 - 1800 Ω

0 V / 210 - 1070Ω

0 V / 390 - 1600 Ω

0V / 440 - 960 Ω

Input Line

When CLC input is configured as input line, only EOL 4k7 can be used. If it is configured as Exi-area input, line

alarm resistance values are different. See table below and chapter 12.2.2.

EOL resistor / Exi

4k7, 5%

4k7, 5% Exi

Max. cable resistance

100 Ω

Alarm resistance

1k33 – 2k15, 5%

(e.g. 4k87 and 2k94 in parallel =

1k833)

715 – 1870 Ω, 5%

(e.g. 4k87 and 2k94 in parallel =

1k833)

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 57 58

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