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Product Description
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
Pilot tone detection on 100V loudspeaker lines
Voltage free switch 200V 1A and LED indications of pilot tone
Daisy chainable for monitoring multiple zones on a single input contact
Fits on built-in mounts on selected Bosch loudspeakers
EN 54-16 certified
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
Several EOL boards can be daisy-chained to a single 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
Product Specification
|
Brand |
Bosch |
|
Product Type |
Supervision Board |
|
Product Model |
PLN-1EOL |
|
Electrical |
|
|
Input |
1 x |
|
Voltage |
100 V loudspeaker line |
|
Detection Threshold |
5 to 50 V @ 20 kHz |
|
Output |
2 x |
|
Indicator |
Green LED |
|
Contact |
Normally closed fail safe Bipolar MOS switch 250 Vp 190 mA max |
|
Detection Threshold |
5 to 50 V @ 20 kHz (contact and LED) |
|
Environmental |
|
|
Operating Temperature |
-10 ºC to +55 ºC (14 ºF to +131 ºF) |
|
Storage And Transport Temperature |
-40 ºC to +70 ºC (-40 ºF to +158 ºF) |
|
Relative Humidity |
<95% |
|
Mechanical |
|
|
Mounting |
WLS II |
|
Dimensions (H x W x D) |
17 x 60 x 40 mm |
|
Weight |
Approx. 40 g |
|
Warranty |
As Per Manufacturer Terms and Condition |
Other Details
|
Dimension (MM) – H x W x D |
17 x 60 x 40 |
|
Unit of Measurement |
1 Piece |
|
Weight |
0.040 kg |
|
Generic Type |
Supervision Board |
|
Manufacturer Details |
Bosch Limited Post Box No: 3000,Hosur Road, Adugodi, Bangalore - 560030, India, Phone :18004258665 |
|
Packer Details |
Bosch Limited Post Box No: 3000,Hosur Road, Adugodi, Bangalore - 560030, India, Phone :18004258665 |
|
Country of Origin |
India |
