When connecting the PSU power supplies in 
parallel, up to 4 units can be used in parallel and 
all units must be of the same model with similar 
output settings.  
To use the power supplies in parallel, units must 
be used in a “master-slave” configuration. In the 
master-slave configuration a “master” power 
supply controls any other connected “slave” 
power supplies. In order for the master unit to 
control the slave units, the master unit must use 
the analog control connector to control the slave 
units.  
When using the Analog Control Connector, the 
connector must be wired correctly between the 
master and each of the slave units. For the 
complete connector pin assignment, see page 118, 
or alternatively, the PSU-01C, PSU-02C and the 
PSU-03C cables can be used to connect a master to 
unit to 1, 2 or 3 slave units, respectively.