Bosch FLM-420-O1I1 Output-input Interface Modules: Safety NotesFunctional description

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en

FLM-420-O1I1-D

F.01U.032.854 | 2.0 | 2010.11

Bosch Sicherheitssysteme GmbH

Safety Notes Functional description

The FLM-420-O1I1-D Output-input Interface Module has one semiconductor output (OC) for controlling external 

devices and one monitored input.

The output is electrically isolated from the LSN loop and protected against short circuits. Connected loads can be 

power-supplied in two ways:

-

by the auxiliary power supply from the fire panel, or

-

by an external power supply unit.

For the input, two monitoring functions can be selected (see 

Figure 5, Page 6

):

1.

Monitoring a line with EOL resistor for standby or triggering (interruption/short circuit)

2.

Monitoring a potential free contact for "open" and "closed" states

The programming is carried out via the programming software of the fire panel.

The FLM-420-O1I1-D may be installed on a DIN rail in accordance with EN 60715 with enclosed adapter (see 

Figure 1, Page 4

; removal, see 

Figure 2, Page 5

). Optionally, the interface module may be built into the 

surfacemounted housing FLM-IFB126-S.

Address setting

Fit a rotary switch in the required position using a pan head slotted screwdriver (see 

Figure 4, Page 6

).

Connection

The output OUT/OUT- is switched against the negative potential of the interface module (POWER IN/POW-).

The positive potential for OUT/POW+ is provided either by the auxiliary power supply (AUX) from the fire panel (see 

Figure 6, Page 7

) or by an external power supply unit (see 

Figure 7, Page 7

).

OUT/POW+ and POWER IN/POW+ are linked internally.

The external power supply unit must be free-of-ground.

NOTICE! 

Installation must only be performed by authorized and specialized personnel!

CAUTION! 

Electrostatic discharge (ESD)! Electronic components could become damaged. 

Ground yourself using a wrist strap or take other suitable actions.

Address (A)

Operating mode

0 0 0

Loop/stub in LSN improved version mode with automatic addressing

0 0 1 - 2 5 4

Loop/stub/T-taps in LSN improved version mode with manual addressing

CL 0 0

Loop/stub in LSN classic mode (address range: max. 127)

2 5 5 - 2 9 9

Non-permitted address range (error message on fire panel)

NOTICE! 

A maximum cable length of 3 m is permitted per input and output.

The maximum cable length of all inputs connected to the loop or stub is 500 m in total.

Additionally, all outputs which are not electrically isolated from LSN must be included in the 

total line length calculation (e.g. peripherals connected via C points).

The activation of the input IN has to be carried out electrically isolated from LSN (e.g. with 

relay contacts, pushbutton, etc.).

The input must have a minimum activation time of 3.2 s.

Description

Function

IN

IN+ | IN-

Input

OUT

POW+

Reference potential (+)

OUT-

Output (switched negative potential)

POWER IN POW+ | POW-

Power supply output (OUT)

LSN

b1+ | a- | b2+

LSN (incoming/outgoing)