Nautel XR3-PREINST, Руководство по предварительной установке

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XR6/XR3 Pre-installation Manual Control and monitoring
Issue 3.0 2009-07-15 Page 6-3
Output network faults
High DC current
This alarm is triggered when the dc current goes above approximately 41 A (XR6) or 21 A (XR3).
High RF current
This alarm is triggered when the RF current exceeds the factory-set alarm threshold.
High VSWR shutback
This alarm is triggered when the reflected power exceeds the factory-set alarm threshold -
approximately 480 W (XR3) or 960 W (XR6).
Total power limit
This fault is triggered when the product of the B+ (dc) voltage and the dc current is greater than
approximately 15 kVA (XR6) or 7.5 kVA (XR3).
• This fault causes an immediate cutback , but not a shutback .
Exciter faults
Mod driver fault A
This fault is reported to the microcontroller only if exciter A is selected. If the exciter transfer
function is set to
auto , then the microcontroller will attempt a changeover to exciter B. If it cannot, or
if the exciter transfer function is set to manual , then this fault will cause a shutback .
Mod driver fault B
This fault is reported to the microcontroller only if exciter B is selected. If the exciter transfer
function is set to
auto , then the microcontroller will attempt a changeover to exciter A. If it cannot, or
if the exciter transfer function is set to manual , then this fault will cause a shutback .
Auto changeover
This event is caused by a fault in the active exciter when the exciter transfer function is enabled (set to
auto ). These faults cause exciter changeovers: Mod Driver Fail A/B, RF Driver Fail, or PDM Drive
Fail.
This fault causes the
Changeover
LED on the transmitter’s front panel to light. It will remain lit until
it is manually cleared. No further auto changeovers are possible until the alarm is cleared.
• The
Auto changeover
alarm can be cleared remotely by re-selecting the active exciter, or
locally by using the transmitter’s GUI
Preset
screen.