Specifications
Bosch Security Systems | 2007-08 | 9922 141 50672en
Plena Loop Amplifier | Installation and User Instructions | External Connections en | 23
4.4 Fault output
With the fault output (refer to figure 4.5), you can send
the condition of the loop amplifier to external devices
(for example, sounders).
The fault output is an internal relay. By default, NC is
connected to COM. When a supervised function of the
loop amplifier fails, the relay connects NO to COM.
4.5 Line output
You can connect a recording device (for example, a
tape deck) to the line output of the loop amplifier (refer
to figure 4.6).
4.6 Power supply
To connect the loop amplifier to a mains power supply
do as follows:
1 Set the voltage selector on the rear of the loop
amplifier to the correct position (refer to table 4.6).
figure 4.5: Fault output, relay
table 4.4: Fault output, details
Number of connections:
1x screw terminal
Location:
Rear side
Contacts:
Voltage-free, max. 100 V, 2 A
Signal-to-noise ratio:
63 dB @ max. volume
75 dB @ min. volume/mute
Headroom:
25 dB
PLN-1LA10
Loop Amplifier
NC
COM
NO
AGC
Metal loss
compensation
Master In
VU LED
Limiter
PRE Amp. POST Amp.
Master Slave
100 V
0
Vox Mix On Off
Phantom Phantom
Mic Line On Off
On Off
Mic Line
Priority input
Slave Out
0º 90º
Line Out
Fault
Supervision
Loop
Apparatus delivered
Connected for 230V
Out Com
Line fuse: 230V 3A
115V 6 A
5K 10K
12
230V115V
NO
C
NC
Fault
NO
C
NC
figure 4.6: Line output, connection
table 4.5: Line output, details
Number of connections:
1x XLR plug
Location:
Rear side
Nominal level:
1V
Impedance:
200 Ω
table 4.6: Voltage selector
Power supply voltage Voltage selector
100 to 120 V( AC) 115
220 to 240 V(AC) 230
Note
The PLN-1LA10 Loop Amplifier is delivered with
the voltage selector in the 230 position.
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PLN-1LA10
Loop Amplifier
Line Out
Fault
1
NO
C
NC
90º
1