System Shutdown; Shutdown Conditions; Resetting Shutdown Faults - Pacific Power Source AMX Series Operation Manual

4.5

SYSTEM SHUTDOWN

This paragraph describes the conditions which will cause system shutdown and the procedure
used to reset the AMX-Series Power Source.

4.5.1 SHUTDOWN CONDITIONS

The Output Contactor of the AMX-Series Power Source will be opened automatically when:
1. Either the Input Power Transformer or one of the power amplifier assemblies has
reached an Over-temperature condition.
either blocking the air inlets (includes dirty fan filters) or overloading the power
source.)
2. The state of the Output Coupling has changed while the Output Contactor is engaged.
3. The state of the Output Form has changed while the Output Contactor is engaged.
When the Output Contactor has been opened due to one of the above faults, the
SHUTDOWN LED on the front panel of the power source will be lighted.
contactor will remain open while the SHUTDOWN LED is lighted. This LED will remain
lighted until reset.
If the Output Power Switch is in the ON/AUTO position when the unit is turned on, the
SHUTDOWN LED will light.
placing the Output Power Switch into the OFF position.

4.5.2 RESETTING SHUTDOWN FAULTS

The shutdown fault is reset as follows:
1. Set the OUTPUT POWER Switch to the OFF position.
2. Wait for the SHUTDOWN LED to extinguish. This LED will remain lighted until the
condition which caused the shutdown to occur has been corrected. In the case of
shutdown due to over-temperature this may take some time while the unit cools down.
The output contactor cannot be engaged until the shutdown fault has been cleared.
NOTE: The SHUTDOWN LED is latched on when a fault occurs. The OUTPUT POWER
Switch or the Output Enable of the UPC MUST be placed in the OFF position before the
SHUTDOWN LED will extinguish, even if the original fault no longer exists.
3. After the SHUTDOWN LED has been extinguished, the unit will function normally.
(Over-temperature is usually caused by
This is normal operation. The LED is turned off simply by
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SECTION 4 OPERATION
The output