Toa FS-7000 SERIES Installation - Manual (Page 28)

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5.12. YA-7000 Amplifier Auto Switching Module
The YA-7000 module is designed to be mounted in the power amplifier of FS-7000 Series Voice Evacuation
Systems. Connecting a standby amplifier to the YA-7000 module installed in the main amplifier (FS-7006PA or
FS-7012PA) permits the main amplifier to be switched over to the standby amplifier if the main amplifier fails.
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1. Speaker Output Terminal (with cover)
This high-impedance, 100V line speaker output
terminal connects to the FS-7000JP. Signals from
the Main Amplifier Input (2) are output when the
main amplifier (i.e. power amplifier in which the
YA-7000 has been mounted) is operating
correctly, and signals from the Standby Amplifier
Input (3) are output if a main amplifier failure is
detected.
(M4 screw terminal; barrier distance: 9 mm)
Note
Never connect this terminal to the speaker output
terminal of the FS-7006PA or FS-7012PA power
amplifier. Failure to follow this instruction could
lead to power amplifier failures.
2. Main Amplifier Input Terminal (with cover)
Connect the main amplifier's speaker output to
this terminal.
(M4 screw terminal; barrier distance: 9 mm)
Note
Only 1 piece of FS-7006PA or FS-7012PA can be
connected to this terminal. Never connect 2 or
more units to this terminal, as the excessive load
could cause the amplifier to fail.
3. Standby Amplifier Input Terminal (with cover)
Connect this terminal to the standby amplifier's
speaker output.
(M4 screw terminal; barrier distance: 9 mm)
Note
Only 1 piece of the FS-7006PA or FS-7012PA can
be connected to this terminal. Never connect 2 or
more units to this terminal, as the excessive load
could cause the amplifier to fail.
4. Operation Mode Selector Switch
Selects the YA-7000's operation mode. Set this
switch to the Normal position in general use.
(Default: Normal)