34 Functional description
4.2.3. Front panel LEDs
Table 10 - Designation of the LEDs on the front panel
LED | Color | Description |
AC ON | Green | Input ac voltage operational |
CL | Yellow | Current Limit |
EQL | Yellow | Rectifier is in equalize mode |
FAN ALM | Red | Fan fail alarm |
HVSD | Red | High voltage shutdown |
RFA | Red | Rectifier fail alarm |
SEN FAIL | Red | Remote sense fail |
THSD | Red | Thermal shutdown |
AC ON ( ac voltage monitoring )
The rectifier monitors the input voltage and if the voltage exceeds the set limit, it will inhibit its operation and trigger a rectifier failure alarm
( RFA ). The rectifier will resume its normal operation automatically when the specified input voltage has been
CL ( current limit indicator )
This LED lights up if the rectifier is in current limit. The rectifier limits the output current to 205 A + 5 A ( adjusted in the factory ), 50% to 105% of the rated output current.
EQL ( equalize )
Indicates the rectifier is in equalizing mode.
FAN ALM ( fan failure alarm )
This LED lights up when the FAN ALM is activated due to a defect in the fan system. The fan configuration includes redundancy to ensure the rectifier will continue working properly if one of the fans fails. If only one fan fails, a rectifier failure alarm RFA will not be triggered. It is, however, imperative to repair or change the fan unit as soon as possible to preserve this redundant feature.
UM5C05C P0745680 Standard 6.00 October 2001 | Emerson Energy Systems |
