20
Rockwell Automation Publication 1606-RM117A-EN-P - July 2020
Series Operation
Devices of the same type can be connected in series for higher output voltages.
It is possible to connect as many units in series as needed, providing the sum
of the output voltage does not exceed 150V DC. Voltages with a potential above
60V DC must be installed with a protection against touching.
Avoid return voltage (for example, from a decelerating motor or battery) which
is applied to the output terminals.
Keep an installation clearance of 15 mm (0.59 in.) (left / right) between two
power supplies and avoid installing the power supplies on top of each other.
Leakage current, EMI, inrush current, and harmonics increase when using
multiple devices.
Figure 25 - Series Operation
Operation on Two Phases
The power supply can also be used on two-phases of a three-phase-system.
Such a phase-to-phase connection is allowed as long as the supplying voltage is
below 240V
+10%
.
Ensure that the wire, which is connected to the N-terminal, is appropriately
fused.
Figure 26 - Operation on Two Phases
Unit A
Input
Output
Unit B
-
+
-
+
Load
+
-
Input
Output
240V
+10%
max
L2
L1
L3
L
N
Power Supply
AC
DC
