TDK-Lambda GENESYS 10KW - Series Connection for Increased Output Voltage

83
-
530
-
000 Rev
G
38
5.14.1 Series connection for increased output voltage
In this mode, two units are connected so tha
t 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 d
i
odes
be connected in parallel with each unit output to prevent reverse voltage during start up s
e
quence
or in
case one unit 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 s
e
ries operation with local and remote sensing.
Remote programming in series operation for in
creased output voltage:
1. Programming by external voltage:
The analog programming circuits of this power supply are
referenced to the negative Sense (
-
S) potential. Ther
e-
fore, the circuits used to control each series connected
unit must be separated and f
loated from each other using
the Isolated Analog option.
2. Using the SO function and PS_OK signal: The Shut
-
Off and PS_OK circuits are referenced to the
is
o
lated interface common, IF_COM (J1
-
2,3). The
IF_COM terminals of different units can be connected t
o
obtain a single control circuit for the power supplies co
n-
nected in series. See Section 5.16 for d
e
tails.
CAUTION
Do not connected power supplies from diffe
r
ent
manufacturers in series or in p
arallel.
WARNING
When power supplies are connected in series, and
the l
oad 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 T
ERMINALS GROUNDING
warning, Section 3.9.11.