Bosch PLENA LBB1938/30 Installation And Operation Manual page 10

10 en | Connection and indicators
Figure 5.3: LBB1938/30
Figure 5.4: LBB1938/70
Note that slight deviations from the rear panel layout shown may occur.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Mains fuse (T10A)
11. Mains connector (3-pole)
12. ON - OFF switch
13. Voltage selector (Not on LBB1938/x0)
14. Loudspeaker direct output terminals
15. Battery detection
16. Fault relay output
17. Pilot-tone detection
18. 100 V slave input terminals
19. Input 2 enable control terminals
20. Input 1 priority control terminals
2018.11 | V1.2 | LBB193x/x0
20 19 18
Input 1 Priority
Loopthrough 1
Input 1 Input 2 Slave Input
Input 2 Program
Priority Enable 100V
Loopthrough 2
Input 1 Priority
+
2...24V- Input 1 -
0V- Input 2
Input 2 Enable +
2..24V- Enable -
0V- Mute
100V
Slave Input 100V
0
2..24V GND 2..24V GND 100V 0
Default O Default On
Input 1-Priority Input 2-Progr am
Input Input
Input Output
1 2 3 4 5
Priority line input 1 (XLR/balanced)
Level control input 1
Priority loopthrough output 1 (XLR/balanced)
Program line input 2 (XLR/balanced)
Level control input 2
Program loopthrough output 2 (XLR/balanced)
Priority controlled loudspeaker output terminals
24 Vdc power supply terminals
Earth connection screw
Installation and operation manual
20 19 18 17 16
6
PLENA power amplifiers
15 14
17 16 15 14
Fault Relays' Output
Input Battery Main Power
Pilot-tone Battery
Detector Detection
O On O On
NO COM NC NO COM NC NO COM NC
Apparatus
delivered
Direct O utput
connectored
100V
100V 0 70V 0 8
for 230V~
0
70V
0
8ohm
100V/70V
Rated input
Selection (12A)
Power : 1600VA
Priority Only
0
Priority Controlled Output
No Priority
0
Priority
100V 0V 100V 0V
Priority Only No Priority
7
Bosch Security Systems B.V.
12
11
10
9
Power
12
11
10
24V DC In
9
8