Peavey MediaMatrix X-Frame 88 Manual page 34

Fault Contacts
One of the new features of the X-Frame 88 is the Fault Contact connector. This rear-panel connector gives the designer the
ability to create external monitoring systems that could be used to generate an alarm, or signal other remote systems in case of
failure. This feature works very well for mission-critical environments where systems must be supervised for proper operation.
10V V2
NO COM NC
10V V4
NO COM NC
FAULT
CV INPUTS RS-485
CONTACT
Fig. X, Fault Contact circuit diagram
The Fault Contact function will activate when any of the following conditions exist within the X-Frame 88:
There has been a failure of one or more DC voltage rails within the X-Frame 88. This includes both analog and digital DC
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power supply rails.
The internal temperature of the X-Frame 88 has exceeded the threshold of normal operation. This fault condition could be an
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indication of a defective fan or clogged airway.
There has been a failure, reset, crash or shutdown of the X-Frame 88's internal microprocessor.
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The integrity of the AC power supply. In most conditions, an abnormal AC power supply condition will be signalled as a
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fault by the subsequent fault of the DC supply rails.
Communications between the X-Frame 88 and the digital audio processor. Communications errors are commonly reported by
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the MediaMatrix software.
Audio levels, faults or status.
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DSP faults. Since all DSP hardware resides on the DPU product, the faults are reported by the DSP hardware.
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Windows faults
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System crashes
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Essentially, the fault monitoring functionality is limited to conditions specific to the X-Frame 88. To correctly supervise an
integrated system, fault monitoring should be implemented on each hardware component separately. MediaMatrix software
provides many additional features that can be used to provide supervision functionality. For more information on these fea-
tures, please refer to the documentation in the Help of the MediaMatrix or X-Frame
Page 38
The contacts are rated at 0.3 amps at 120 VAC, (0.3A at 110 V DC, 1A at 30 V DC),
SH
and are attached to a latching relay that provides a Normally Open (N.O.), labeled
Fault Closed, and Normally Closed (N.C.), Fault Open, contact. Both contacts
AR
A
can be used simultaneously if desired, and both indicate identical fault functions.
Proper use of these contacts may require that external relays and other electronics
be used to provide signalling and alarm annunciation. Although the current rating
of the contacts is sufficient for direct connection to most common devices, good
design would suggest an intermediate logic stage with its own supervision be
SH
implemented for most systems.
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N.C. Normally, under no fault conditions, closed. Fault Open
N.O. Normally, under no fault conditions, open. Fault Closed
88 software applications.
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X-Frame 88 Designer's Manual
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