Loudspeaker line isolator system
System introduction | en
9
Bosch Security Systems B.V.
Installation manual
2021.07.28 | V1.00 |
3.3
PRA-LID (LDB) Indicators, buttons and connections
Front
Top
Bottom
Side
FAULT OUTPUT CONTACT
RS485 B
RS485 A
GND
+24/48 VDC
1
MODE/EARTH
indicator
6
ID
rotary switch
2
OPEN
indicator
7
LOOP PRIMARY
output connector
3
SHORT
indicator
8
LOOP SECONDARY
output connector
4
SERVICE
button
9
Power amplifier
connector
5
RESET
button
10
Loopdrive bus
DIN rail connector
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:
–
BLUE - system OK.
–
ORANGE - fault detected.
Fault detection is always indicated by cyclic blinking. Blinking speed relates to the current
status of the fault:
–
ORANGE fast (4 cycles/sec) - fault is currently detected.
–
ORANGE slow (1 cycle/sec) - fault was detected in the past and fixed.
Summary of Contents for F.01U.393.727
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