Pra-Lid (Ldb) Indicators, Buttons And Connections - Bosch PRAESENSA Installation Manual

Loudspeaker line isolator system
3.3

PRA-LID (LDB) Indicators, buttons and connections

Front
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Indicators
Line isolator feature multi‑color LED indicators with different color and blinking cycles, which
correspond to currently detected state of the loudspeaker line.
General principle of LED indications:
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Fault detection is always indicated by cyclic blinking. Blinking speed relates to the current
status of the fault:
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Bosch Security Systems B.V.
Top
MODE/EARTH indicator
OPEN indicator
SHORT indicator
SERVICE button
RESET button
BLUE - system OK.
ORANGE - fault detected.
ORANGE fast (4 cycles/sec) - fault is currently detected.
ORANGE slow (1 cycle/sec) - fault was detected in the past and fixed.
Bottom
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Installation manual
System introduction | en
Side
l
FAULT OUTPUT CONTACT
RS485 B
RS485 A
GND
+24/48 VDC
ID rotary switch
LOOP PRIMARY output connector
LOOP SECONDARY output connector
Power amplifier connector
Loopdrive bus DIN rail connector
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2021.07.28 | V1.00 |