13
0100037-J0 Rev D
User Guide
Cordex HP 2.4kW / 3.0kW Modular Switched Mode Rectifier
4. Features
4.1
Cordex HP 3.0kW rectifier
4.1.1 Front panel LEDs
The front panel LEDs indicate the rectifier status summary and patterned response to
Locate Module
command.
Alarm/Fault
The red LED is on during an active Module Fail alarm if the module is unable
to source power due to a fault condition. Refer to the relevant controller
manual for fault details.
The LED flashes (~2Hz) when a minor alarm is detected if the module's output
capability has been reduced or a minor failure is detected.
The red LED will remain active if the module is receiving power from the DC
bus.
DC ON
The green LED is on when the rectifier is delivering power to the load. The
LED goes out when the rectifier is off. For example, when commanded by the
controller.
AC ON
The green LED is on when the AC input voltage is qualified and within the
operational AC input range and input frequency.
LED activity during the Locate Module command from controller
The
Locate Module
command from the Cordex HP controller, causes the LEDs of the target rectifier to flash in a
cyclical pattern. This flashing lasts approximately 60 seconds.
LED activity during power save
When a rectifier is put into power save mode, only the AC ON LED remains illuminated.
4.1.2 True module fail alarm
The power modules have a “true” fail alarm that provides a true indication of the power module’s ability to source
current. When the module’s output current drops below 2.5 percent of the rated output, a low output current
condition is detected and the
Module Fail detection circuit
is activated. This circuit momentarily ramps up the
output voltage to determine if the module will source current. If no increase in current is detected, the
Module
Fail
alarm is activated. The module will test once every 60 seconds for the condition until a current is detected.
The output voltage ramping ceases upon detection of current. A minimum 2.5 percent load is required to avoid the
Ramp Test Fail
alarm. This load can be provided with the parallel system battery. Activation of this alarm could
indicate a failed module or a failed load.
To avoid nuisance alarms for Cordex rectifier systems without batteries, or with a very light load (below 2.5
percent of the rated output), the ramp test should be disabled. Disable the Ramp Test via the Cordex HP controller
menu:
System > DC System > Inventory > Rectifiers > Configuration
.
4.1.3 Heat dissipation
Each rectifier module is equipped with a front-mounted, variable-speed fan. The fan speed is determined based
on ambient temperature, rectifier temperature, and the load. Air flow is front-to-rear with the exhaust air exiting
through internal vents at the rear of the unit. The fan may spin in required situations.
Summary of Contents for Cordex HP CXRF 48-2.4kW
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