OPERATING INSTRUCTIONS
Active Current Sharing for Vo1, Vo2, Vo3
The current sharing facility, consisting of a single-wire link, should be used, where several converters are operated in parallel
connection, for example, high reliability n+1 redundant systems or systems providing higher output power.
Note
: Not more than six converters should be connected in parallel.
Using this feature reduces the stress of the individual converters and improves the reliablity of the system. Interconnection of
the current sharing terminals causes the converters to share the output current evenly. In n+1 redundant systems a failure of a
single converter will not lead to a system failure, since the outputs are already decoupled by FETs and diodes internally.
Passive Current Sharing for Vo4
The output voltage changes slightly with the output current (droop characteristic) ensuring automatic current sharing without
further precautions, when several converters are connected in parallel. An increase in output current decreases the output
voltage according to the following graph.
∆
V
o
–4% +2%
Output voltage V
o4
versus output current I
o4
.
LEDs
A green LED "Input OK" and a red LED "Fault" are incorporated in the front panel.
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