Process supply: auxiliary functions
(Original Document)
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Parallelization mode with power optimization
The aim of parallelization is to use two modules with the same product reference in order to provide an output current which is greater than the maximum allowed by a single supply. The total current is the sum of the currents provided by all the supplies put together.
Power optimization is a system within the supply which is designed to distribute currents equally between parallel supplies. The resulting advantage is that the life of products is significantly extended, linked with distributed power consumption.
Dedicated supply features:
TSX SUP 1011/1021 supply
Power optimization mode is obtained by positioning the NOR/LSH switch at the rear of the modules onto LSH. To access the switch, the support board must be removed. When the orange LED (LSH) is lit, the mode is in operation.
The current provided by two parallel supplies is limited to:
  • 2A with 2 TSX SUP 1011 suppliers,
  • 4A with 2 TSX SUP 1021 suppliers.
Using this mode means output voltage can vary slightly: 24V + or - 5% instead 24 V + or - 3% in normal mode.
When sharing loads, the power imbalance can reach a maximum of 25%.
A specific connection is required for these types of modules.
TSX SUP 1051/1101 supply
Power optimization mode does not require a switch on these supply modules. A specific connection must be made for the TSX SUP 1051 module and the TSX SUP 1101 module.
The maximum current provided by two parallel supplies is limited to:
  • 10A with 2 TSX SUP 1051 suppliers,
  • 20A with 2 TSX SUP 1101 suppliers.
Using this mode will lead to no loss of output voltage:
When sharing loads, the power imbalance can reach a maximum of 15%.
Redundancy on TSX SUP 1011/1021 power supplies
Principle:
To provide the currents required for the application, even in the event of loss of one of the power supplies.
To do this, the two suppliers are run in parallel by setting up the necessary connections (see Connection of TSX SUP 1011/1021 power supplies).
The suppliers are configured in power optimization mode.
Example: provide 1A with redundancy from 2 TSX SUP 1011 suppliers.
NOTE: TSX SUP 1051 and 1101 suppliers are not equipped with a serial diode, which is required for the redundancy function.