ACU-9081
8-Channel Automatic Changeover Unit
The ACU-9081 Automatic Changeover Unit provides monitoring and surveillance functions for your power amplifier units. It monitors for faults and implements automatic changeover capability to backup up to 8 amplifier units. This unit ensures a continuous and uninterrupted broadcast of BGM or emergency message in a PA system.
Changeover is performed at both input and output sections, making it suitable for application in a matrix system. At any one time, only a failed duty unit shall be replaced by a standby amplifier to avoid overloading. When it is cascaded, the ACU-9081’s applications could be expanded to cover more than 8 amplifiers at one go. To faster a more reliable changeover process, a microcontroller based signal processor is used to implement individual input source and output detection for amplifiers.
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FEATURES
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Cater for 8 duty amplifiers and 2 standby amplifiers
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High sensitivity and accurate fault detection function, less than 2 seconds for changeover time
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Expandable for 2 standby to cater more than 8 duty amplifiers
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8-channel audio source volume controls
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Built-in microcomputer detection system to realize auto amplifier fault changeover
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Overloading protection by allowing only a single take over
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LED indicator and switchable buzzer interface for fault alert