Installation Instructions

s
A24205-A334-B837 (Edition 8) s
P/N 315-035400-8
Installation Instructions
Model ZAC-40
Zone Amplifier Card 40W (500-035400 / S24235-B1-A2 (70V))
Installation Instructions for North America.
INTRODUCTION The Model ZAC-40 from Siemens Industry, Inc. is a
CAN data bus card that contains two speaker zones and
one 40 Watt audio amplifier, capable of operating at 25
VRMS or 70 VRMS.
The two speaker zones can be wired and operate as
either a single Class A zone or a single Class B zone or
as two Class B zones independently protected to
provide split zone or interleaved speaker zones.
The ZAC-40 can also be used as a backup amplifier to
serve as a backup for other ZAC-40 amplifiers in a 1 to
1 backup or 1 to many backup.
The ZAC-40 also contains a local external audio input
circuit (0 dB) and a dry contact input to switch on the
amplifier and activate the two zones as configured via
the Zeus tool. The ZAC-40 is capable of amplifying any
one of the 8 audio channels that are transmitted from
the DAC-NET (Digital Audio Card-NETWORK) via the
internal digital Audio bus ASI (Audio Serial Interface)
Features ZAC-40 features are as follows:
Class D audio power amplifier with 40W RMS
output power
Over all efficiency is about 80% under full load
Amplifier is supervised for functionality
Amplifier is protected against open, short
circuit, over current and over modulation
Speaker lines are supervised for open, short
circuit and ground fault
The ZAC-40 is micro controller controlled
A FPGA controls the digital audio data stream
(ASI Bus) transmitted by the DAC-NET
Software update via PMI/PMI-2/PMI-3
OPERATION The ZAC-40 receives its control and communication data from the DAC-NET
and sends its status data to the DAC-NET via CAN Bus. Therefore it takes
1 sub-address of the DAC-NET.
Figure
1
ZAC-40 Front Panel

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