TDK-Lambda Z+ series - Remote Programming in Series Operation

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5.4.3 Remote Programming in Series Operation
Programming by external voltage: The analog programming circuits of this power supply are referenced
to the negative Sense potential. Therefore, the circuits used to control
each series connected unit must be separated and floated from each
other. Refer to section 6.4
Using the SO function and PS_OK signal : The Shut Off and PS_OK circuits are referenced to the isolated interface
common, IF_COM (J3-7). The IF_COM terminals of the units can be
connected to obtain a single control circuit for the power supplies
connected in series.
Programming by external resistor : Programming by external resistor is possible. Refer to section 6.5 for
details.
Programming via the Serial Communication
port (RS232/RS485, USB):
The Communication port is referenced to the IF_COM which is isolated
from the power supply output potential. Therefore power supplies
connected in series can be chained using the Remote-In and Remote-
Out connectors. Refer to Chapter 7 for details.