Plena Voice Alarm System Installation | en 41
Bosch Security Systems B.V. Installation and Operation manual 9922 141 1037x (V2.16) | V0.6 | 2011.09
4.8.1 Installation of a single EOL
1. Connect the two cables at the end of the 100 V loudspeaker line to the Input 100V LS on
the EOL board.
2. Connect the two cables from an Emergency Trigger Input on the Voice Alarm Controller
to TRGA on the EOL.
3. Connect the jumpers JP1 on the EOL as shown.
Figure 4.3 JP1 for single EOL
4.8.2 Installation of a multiple EOL in a daisy-chain
With a daisy-chain configuration it is possible to:
– Supervise several loudspeaker lines with only one fault input.
– Supervise several branches of a loudspeaker line with just one fault input.
1. Connect the cable from the 100 V loudspeaker line to the terminal 100 V LS Input on the
EOL board.
2. Connect one cable from an Emergency Trigger Input on the Voice Alarm Controller to the
FIRST BOARD input on the EOL board.
Figure 4.4 JP1 for first EOL
3. Connect a 20 or 22 kOhm resistor in parallel with the Trigger input to connect more than
one EOL board on a single Trigger input and to supervise them.
4. Connect the EOL boards to the Trigger input as indicated in Figure 4.5. This input should
be on the Controller or Router to which the loudspeaker lines it supervises are also
connected
NOTICE!
It is possible for the LED to turn off before the contact is opened or vice versa. This level
difference is typically less than 500 mV.
JP1
NOTICE!
The last EOL board in line is connected in a different way than the other EOL boards. This is
required to supervise the whole EOL detection line against short circuit. Such a short circuit
will be reported as an Input Fault. A break in the detection line will be reported as a Line
Fault, just as a loudspeaker line failure.
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