Series Connection For Positive And Negative Output Voltage - TDK-Lambda Genesys GEN8-300 User Manual

3. Programming by external resistor:
4. Programming via the Serial
Communication port (RS232/RS485):

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 current limit of each
power supply to the maximum that the load can handle without damage. It is recommended that
diodes be connected in parallel with each unit output to prevent reverse voltage during 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.
Fig.5-3: Series connection for positive/negative output voltages
Remote programming in series operation for positive and negative output voltage
1. Programming by external voltage:
2. Using the SO function and PS_OK
signal :
3. Programming by external resistor :
4. Programming via the Serial
Communication port (RS232/RS485):
Programming by external resistor is possible . Refer to
section 6-5 for details.
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.
+LS +S
+
POWER
(*)
SUPPLY -
-LS
-S
+LS +S
+
POWER
(*)
SUPPLY
-
-LS -S
The analog programming circuits of this power supply
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.
The Shut-Off and PS_OK circuits are referenced to the
isolated interface common, IF_COM (J1-2,3). 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 is possible. Refer
to section 6.5 for details.
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.
41
41
LOAD
+
COM.
-
(*) Diodes are user supplied.