97-7224006_3-31-15
Information subject to change
15
7224 OPERATOR’S MANUAL – SECTION 3
3.2.4 Fault Status Indicators for
Multi-Amp Systems
The four Fault Status indicators located on each
amplifier’s front panel are used to monitor the
internal conditions of the amplifier and will illumi
-
nate when a fault condition occurs. All amplifiers
in the system may be placed in Standby mode
when a fault condition occurs, depending on the
fault condition and the configuration of the sys
-
tem. Typically, the system can be released from
Standby mode by pressing the Reset button on the
amplifier displaying the Fault status. Refer to the
chart below to determine the fault condition being
indicated and the action required to clear the fault
condition and return the system to Run mode.
Figure 3.8 – Fault Status Indicators for Multi-Amplifier Systems
Indicator is lit
Indicator is not lit
Indicator may be lit
One or More Amps in System
Other Amps in System
State of Operation
Action Needed to
Clear Fault
Condition and Re-
turn to Run Mode
Main Status
Indicators
Fault Status
Indicators
Main Status
Indicators
Fault Status
Indicators
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Output Fault status:
This indicates that an
Output Fault condition has
occurred in the amplifier
displaying the Fault sta-
tus, and the system has
been placed in Standby
mode. The Fault indicator
will light under two condi-
tions: 1) High-frequency
oscillation is causing high
shoot-through current;
or 2) An output transistor
has shorted, causing the
output fault condition.
This fault condition can-
not be cleared using the
front-panel Reset button.
See the
“Trouble-
shooting”
section for
more information on
diagnosing and clearing
this fault condition.
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Over Load status:
This indicates that the
output of the system
could not follow the input
signal due to voltage
or current limits. Under
normal operation with the
factory-default settings, an
Over Load condition will
not place the system in
Standby mode. If the sys-
tem has been configured
to be forced to Standby
on Over Load, the system
will be placed in Standby
mode when the Over
Load indicator lights.
To remedy the Over
Load fault during opera-
tion, turn down the level
of the input signal until
the Over Load indica
-
tor turns off. To clear an
Over Load fault condi
-
tion when the amplifier is
forced to Standby, turn
down the level of the
input signal, then push
the Reset button on the
amplifier(s) displaying
the Over Load status.
