Bosch FLM-420 - Manual (Page 19)

FLM-420/4-CON Conventional Interface Module for 4-wire LSN | en 19
Bosch Sicherheitssysteme GmbH Installation Guide F.01U.012.982 | 5.0 | 2008.12
Functional description
The FLM-420/4-CON Conventional interface module enables monitored connection of conventional detectors to LSN
fire panels via a 4-wire supply network (LSN with external power supply).
The surface-mount housing for the FLM-420/4-CON-S has pre-formed conduit connections and rubber bushings for
cable entries (Figure 2, page 7, Removal: Figure 1, page 6, Installation: Figure 5, page 9).
The FLM-420/4-CON-D is installed on a DIN rail in accordance with EN 500022 with enclosed adapter (Installation:
Figure 6, page 10; Removal: Figure 7, page 11).
Address setting
Fit a rotary switch in the required position using a pan head slotted screwdriver (see Figure 8, page 12).
X
It is not permitted to use different operating modes in one loop/stub/T branch next to each other!
Connection
Technical specifications
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 branches 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)!
Connection to LSN See ...
With power supply via LSN additional power supply Figure 10, page 13
With power supply via external power supply unit (free-of-ground) Figure 11, page 13
Connection of conventional lines See ...
2 stubs (Class B) Figure 12, page 14, left
1 stub (Class B) Figure 12, page 14, right
1 loop (Class A) Figure 13, page 15
Description Function
LSN: b1+ | a- | b2+ LSN b incoming / LSN a / LSN b outgoing
AUX: 2+ | 1/2- | 1+ Power supply output, 4-wire detector
OUT1: + | - Stub 1 or outgoing loop
OUT2/IN1: - | + Stub 2 or incoming loop
PWR IN
LSN AUX or EXT.PWR: + | - Power supply input (from LSN or external)
* Does not apply if connecting 2-wire detectors
LSN Input voltage 15 to 33 V DC (min. to max.)
Max. current consumption 8.5 mA
Primary line Line voltage 21 to 22 V DC (21,5 V DC typ. ±0,5 V DC)
Max. line current 80 mA (±10% @ 25 °C)
Max. line resistance 50
Ω per line (2 x 25 Ω max.)
Power supply input (PWR IN) Voltage 24 to 30 V DC (min. to max.)
Ripple < 150 mV
Power supply output, 4-wire
detector Voltage 23.5 to 30 V DC (rated voltage 24 V DC)
Max. current 200 mA per output (can be switched in parallel)
Ripple < 300 mV
EOL resistor for zone as stub (Class B) With calibration value: 2,2 k
Ω
Without calibration value: 2,2 k
Ω / 3,9 kΩ
Permissible wire diameter
0.6 to 3.3 mm
2
Permissible operating temperature / storage temperature -20 °C ... +55 °C / -25 °C ... +80 °C
Permissible relative humidity <96%, non-condensing
Protection class as per IEC 60529 FLM-420/4-CON-S: IP 54
FLM-420/4-CON-D: IP 30
Safety class as per IEC 60950 III
EMC interference immunity/EMC emitted interference EN 54-18, EN 50130, VDS 2540/EN 61000-6-3
Housing material and color Surface-mount housing ABS/PC blend, signal white (RAL 9003)
Interface housing and adapter PPO (Noryl), gray white (similar to RAL 9002)
Dimensions FLM-420/4-CON-S approx. 126 mm x 126 mm x 71mm (W x H x D)
FLM-420/4-CON-D approx. 110 mm x 110 mm x 48 mm (W x H x D)