Board PLN-1EOL Bosch

Board PLN-1EOL Bosch

Phát hiện lỗi trên đường loa 100 V
Công tắc không có điện áp 200 V 1 A và chỉ báo LED của âm báo
Daisy có thể giám sát nhiều vùng trên một tiếp điểm đầu vào duy nhất
Phù hợp với giá gắn tích hợp trên các loa Bosch được chọn
Chứng nhận EN 54‑16

PLN-1EOL Plena End-of-Line Boards
End-of-line supervision boards (set of 6 pieces).

PLN-1EOL 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.

Functions PLN-1EOL

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.

Thông số kỹ thuật PLN-1EOL