Function; Behaviour In Degraded Mode - Siemens FDCL221 Technical Manual

Line separator

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Structure and function

Function

3.3 Function

16 | 32

The line separator FDCL221 is an electronic switch which is mounted on a

FDnet/C-NET detector line.

Station

Figure 3: Use of a line separator FDCL221 on a FDnet/C-NET detector line

The line separator detects short-circuits and open lines on the detector line and

disconnects the negative conductor in the event of a short-circuit. The area of the

detector line unaffected by the short-circuit can continue to be operated.

Applicable for the FDnet/C-NET:

When the main processor of the fire control panel fails, the control panel works in

degraded mode operation. Depending on the control panel type, the fire control

panel can continue to perform the most important alarming and signaling functions

in degraded mode operation.

Degraded mode operation on the FDnet/C-NET is not supported in the same way

by all control panels. The information in the 'List of compatibility' and in the

corresponding control panel documentation must be taken into account during

project planning.

FDCL221

FDCL221-M

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