Vega Customer Applications Manual Section 9 - Functional Notes
Rev. A3: October 2003 Page 31 of 48
On overvoltage condition from any Vega module in a given output module line-up (configuration) will effectively shut
down the whole power supply, the outputs from all modules will be lost. The fan will also stop.
To re-establish the outputs, it is necessary to cycle the mains off and then back on again. Allow at least 15 seconds
for the unit to recover.
The Vega can also be re-established without cycling the mains by applying an INHIBIT / ENABLE signal. The correct
Vega primary option must be fitted for this to be available.
Over Current Protection.
All Vega modules have overcurrent protection as standard. Check the specification for each module for the actual
value.
In an overcurrent condition, the current is very approximately constant current. ie when the current limit is reached, the
output voltage reduces and the current remains at approximately the current limit value.
When the overcurrent condition is removed, the output voltage will automatically recover.
Minimum Load requirements.
There is NO minimum load required on any of the Vega modules.
Configurations OVER 450W (450W converter) or 650W (650W converter).
It is possible for a given module configuration to have more than 450W (in a 450W converter) of available output
power. ie the sum of volts x amps for all outputs comes to >450W. This is not unusual BUT the actual drawn
running currents should NEVER exceed 450W. This will result in the converter becoming overloaded and
shutting down.
The same is true for a 650W converter / module configuration.
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