Rockwell Automation 1606-XLP15E Power Supply Reference Manual - Manual (Page 19)

All parameters are specified at 24V, 0.63A, 230Vac input, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
Rockwell Automation Publication 1606-RM004A-EN-P - January 2014 19
Bulletin 1606 Switched Mode Power Supplies
20.6. Series Operation
Power supplies of the exact 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 150Vdc. Voltages
with a potential above 60Vdc are no longer SELV and can be dangerous.
Such voltages must be installed with a protection against touching. Earthing of
the output is required when the sum of the output voltage is above 60Vdc.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals. Keep an installation clearance of 15mm (left /
right) between two power supplies and avoid installing the power supplies on
top of each other. Do not use power supplies in series in mounting
orientations other than the standard mounting orientation (input terminals on the bottom and output terminals on
top of the unit). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple
power supplies.
Earth
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
20.7. Inductive and Capacitive Loads
The unit is designed to supply unlimited inductive loads.
The max. capacitive load depend on the steady state output current. At 0.6A output current, the output capacity
should not be larger than 660μF and at 0.3A output current not larger than 2 500μF. In case of larger capacitors, the
unit can show start-up attempts or start-up problems.