Vertiv™ NetSure™ DC/DC Converter Module User Manual
8
Figure 2.1: Local Indicator Locations
Table 2.1: DC-DC Converter Indicators
Indicator
Normal State
Alarm State
Alarm Cause
Power
(Green)
On
Off
No input voltage.
Internal input fuse open.
Flashing
The converter is being identified by the controller.
Protection
(Yellow)
Off
On
DC input under/over voltage.
Moderate load sharing imbalance.
Converter not inserted into the slot completely.
Converter over-temperature protection.
Converter in ECO Standby Mode when ECO Mode is active in
controller.
Flashing
Loss of communication with the controller (the converter can provide
power).
Alarm
(Red)
Off
On
Severe load sharing imbalance.
Converter output disabled for any reason, including overvoltage
shutdown.
Converter addresses contradictory.
Flashing
Faulty fan (converter shuts down).
2.2
Converter High Voltage Shutdown and Lockout Restart
Procedure
Remove the converter, wait 30 seconds or more (until the LEDs on the converter extinguish), then re-insert the converter.
The converter may also be restarted from the controller. Refer to the controller’s documentation.
2.3
Converter Current Limit
When setting total converter current limit, the set point to each converter is the total set point divided by the number of converters.
For example, if the system contains five converters and the current limit is set to 100 amps then each converter has a current limit set
point of 20 amps. If one or more converters are removed or fail it will take several seconds for the individual set points to the
remaining converters to be reset. In the example given, if one converter is removed the current limit set point will drop to 80 amps
(20 amps times four remaining converters) until the controller can send updated set points to the remaining converters. This takes a
couple communication cycles (several seconds) after which each converter would have a new set point of 25 amps for a total of 100
amps. The total current limit of the converters should not be set such that the loss of the redundant converters will cause this
temporary set point to drop below the actual maximum expected load.
Protection Indicator (Yellow)
Alarm Indicator (Red)
Power Indicator (Green)
