83-507-5002 Rev. A
40
Fig.5-3: Series connection for positive/negative output voltages
+S
+
-
-S-LS
+LS
POWER
SUPPLY
+S
+
+
-
-
-S
-LS
+LS
POWER
SUPPLY
(*)
(*)
(*) Diodes are user supplied.
1. Programming by external voltage: The analog programming circuits of this power sup-
ply are referenced to the negative output potential.
Therefore, the circuits used to control each series
connected unit must be separated and floated from
each other.
2.Using the SO function and PS_OK signal: The Shut-Off and PS_OK circuits are referenced to
the isolated interface common, IF_COM (J1-2,3).
The IF_COM terminals of different units can be
connected to obtain a single control circuit for the
power supplies connected in series.
3. Programming by external resistor: Programming by external resistor is possible. Refer
to Section 6-5 for details.
4. Programming via the Serial The communication port is referenced to the
IF_COM
Communication port (RS232/RS485): which is isolated from the power supply output po-
tential. Therefore power supplies connected in series
can be daisy-chained using the Remote-In and Re-
mote-Out connectors. Refer to Chapter 7 for details.
5.14.2 Series connection for positive and negative output voltage
In this mode, two units are configured as a positive and negative output. Set the Output Current
limit of each power supply to the maximum that the load can handle without damage. It is recom-
mended that diodes be connected in parallel with each unit output to prevent reverse voltage dur-
ing start-up or in case one of the units shuts down. Each diode should be rated to at least the
power supply rated output voltage and output current. Refer to Fig.5-3 for this operating mode.
Remote programming in series operation for positive and negative output voltage
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