TDK-Lambda Genesys GENH Series User Manual page 66

CAUTION
Do not connect power supplies from different
manufacturers in series or in parallel.
5.14.1 Series connection for increased output voltage
In this mode, two units are connected so that their outputs are summed. 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
sequence 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.5-1 and 5-2 for series operation with local
WARNING
When power supplies are connected in series, and the
load or one of the output terminals is grounded, no point
may be at a greater potential of 60VDC from ground for
models up to 60VDC Rated Output and 600VDC from
ground for models >60VDC Rated Output. When using
RS232/485 or IEEE, refer to the OUTPUT TERMINALS
GROUNDING warning, section 3.9.11.
+S
+LS
+
POWER
SUPPLY -
-S
-LS
+LS +S
+
POWER
SUPPLY
-
-S
-LS
Fig.5-1: Series connection, local sensing
Remote programming in series operation for increased output voltage:
1.Programming by external voltage:
2.Using the SO function and PS_OK signal:
Wenn Stromversorgungen in Reihe geschaltet werden
und die Last oder eine der Ausgangsklemmen geerdet
±
±
(*)
+
LOAD
-
(*) Diodes are
(*)
user supplied.
Fig.5-2: Series connection, remote sensing
The analog programming circuits of this power supply
are referenced to the negative Sense (-S) 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 different units can be connected
to obtain a single control circuit for the power supplies
connected in series.
39
39
VORSICHT
Schalten Sie nicht Stromversorgungen
verschiedener Hersteller in Serie oder parallel.
WARNUNG
ist, stellen Sie sicher, dass
• bei Modellen mit bis zu 60V DC
Nennausgangsspannung kein Punkt ein Potential
gr öß er als 60V gegen ber Erde ausweist ± ü
• bei Modellen mit mehr als 60V DC
Nennausgangsspannung kein Punkt ein Potential
gr ö ß er als 600V gegen ber Erde ausweist. ± ü
Wenn Sie RS232/485- oder EEE-Schnittstellen I
einsetzen, beachten Sie die Warnung "Erdung der
Ausgangsklemmen" in Abschnitt 3.9.11.
+S
+LS
+
POWER
(*)
SUPPLY -
-S
-LS
+S
+LS
+
POWER
(*)
SUPPLY
-
-S
-LS
,
+
LOAD
-