TDK-Lambda Genesys User Manual page 73

6. Connection to the Load
Two-Wire Method
In parallel operation, power supplies can be connected for local or remote
sensing. Refer to Fig. 6-7 and 6-8 for typical connections of parallel power
supplies. The figures show the connections for two (2) units, however the
same connection method applies for up to four (4) units.
With local sensing, it is important to minimize the wire length and
resistance. Also, the positive and negative wire resistance should be as
close as possible to each other to achieve current balance between power
supplies.
Single-Wire Method
In Parallel operation, power supplies can be connected for local or remote
sensing. Refer to Fig. 6-9 and 6-10 for typical connections of parallel
power supplies. The figures show the connections for two (2) units,
however the same connection method applies for up to four (4) units.
With local sensing, it is important to minimize the wire length and
resistance. Also, the positive and negative wire resistance should be as
close as possible to each other to achieve current balance between power
supplies.
6.2.2. Advanced Parallel Operation (Two-Wire/Single-Wire Method)
In this method, multiple supplies can be configured to parallel operation as a single power
supply. The total load current and Output Voltage are displayed by the Master unit and
can be read back from the Master unit. The Slave units display only their operating
status (On, Off or Fault condition).
Refer to the following procedure to configure multiple supplies for Advanced Parallel
operation.
In an Advanced Parallel System, the output current measured by the Master supply
is only the Master's current multiplied by two, three or four (depending on the
number of Slave units).
The total parallel current may be different, subject to the combined output errors of
the Slave units.
It is required to use the Shutoff Daisy-Chain with Advanced Parallel.
1. Advanced Parallel Configuration
Two-Wire Method


NOTE
Set SW1-2 to the DOWN position for the Master unit and UP for all
Slave units.
Connect a wire jumper between J1-8 (LOC/REM) and J1-12 (COM)
for all Slave units.
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