Bosch F.01U.012.731 Benutzerhandbuch
Communications Systems | PLN‑1EOL Plena End-of-Line Boards
PLN‑1EOL Plena End-of-Line Boards
www.boschsecurity.com
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Pilot tone detection on 100 V loudspeaker lines
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Voltage free switch 200 V 1 A and LED indications of
pilot tone
pilot tone
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Daisy chainable for monitoring multiple zones on a
single input contact
single input contact
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Fits on built-in mounts on selected Bosch
loudspeakers
loudspeakers
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EN 54‑16 certified
A Plena end-of-line board is a PCB designed to detect
the 20 kHz pilot tone generated by a supervised public
address or voice alarm system. It activates a voltage
free switch in the presence of a 20 kHz signal (pilot
tone) above 5 V, as well as an LED for easy visual
confirmation of operation.
the 20 kHz pilot tone generated by a supervised public
address or voice alarm system. It activates a voltage
free switch in the presence of a 20 kHz signal (pilot
tone) above 5 V, as well as an LED for easy visual
confirmation of operation.
Functions
Plena end-of-line boards monitor the presence of a
pilot tone on a loudspeaker line. The board connects
at the end of a loudspeaker line and detects the
20 kHz pilot tone signal. This signal is always present
on the line: when back ground music (BGM) is playing,
when a call is in progress, and when no signal is
present. The 20 kHz tone is inaudible and at a very low
level (-20dB). When the pilot tone signal is present, an
LED lights up, and a contact on the board is closed.
When the pilot tone fails, the contact opens, and the
LED goes off. If mounted at the end of the loudspeaker
line, this applies to the integrity of the whole line.
Presence of the pilot tone signal does not depend on
the number of loudspeakers on the line, the load on
the line, or the line capacitance. The contact can be
connected to a PA system, such as the Bosch Voice
Alarm System, to detect and report faults on a
loudspeaker line.
pilot tone on a loudspeaker line. The board connects
at the end of a loudspeaker line and detects the
20 kHz pilot tone signal. This signal is always present
on the line: when back ground music (BGM) is playing,
when a call is in progress, and when no signal is
present. The 20 kHz tone is inaudible and at a very low
level (-20dB). When the pilot tone signal is present, an
LED lights up, and a contact on the board is closed.
When the pilot tone fails, the contact opens, and the
LED goes off. If mounted at the end of the loudspeaker
line, this applies to the integrity of the whole line.
Presence of the pilot tone signal does not depend on
the number of loudspeakers on the line, the load on
the line, or the line capacitance. The contact can be
connected to a PA system, such as the Bosch Voice
Alarm System, to detect and report faults on a
loudspeaker line.
Several EOL boards can be daisy-chained to a single
fault input. This allows a loudspeaker line with several
branches to be monitored.
fault input. This allows a loudspeaker line with several
branches to be monitored.
Since the background music also includes a 20 kHz
pilot tone signal, there is no need to interrupt
background music.
pilot tone signal, there is no need to interrupt
background music.
Certifications and approvals
Immunity
acc. to EN 50130-4
Emergency
acc. to EN 54‑16 * / EN 60849 *
* When used with the Voice Alarm System and
installed according to the Installation and User
Instructions
installed according to the Installation and User
Instructions
Region
Certification
Europe
CE
Declaration of Conformity
CPD