S8PE Datasheet, PDF (7/8 Pages) Omron Electronics LLC – Three phase input switch mode Power Supply (DIN-rail mounting, 3-phase input Switch mode Power Supply with a range of 5A to 40A output current)

Notice
Three phase input operation when one phase is missing
The S8PE will in most cases continue to operate even after the loss
of one phase of the supply. The perfor mance specifications are of
course not guaranteed under these conditions. As the loss of one
phase puts additional stress on some components, the life span of
the unit could be shortened. It is prudent therefore to regularly check
for signs of the following possible conditions.
1. Input terminals wiring open/loose.
2. Incorrect / no voltage on one or more phases of the supply.
3. Abrupt or periodical loss of input voltage.
Three phase input switch off
In order to switch off the Power Supply completely: all 3 phases need
to be switched off.
Mounting
To improve and maintain the reliability of the Power Supply over a
long period, adequate consideration must be taken to heat radiation.
The S8PE is designed to radiate heat by natural air cooling, there-
fore, mount the S8PE so that enough air flow takes place around the
power supply.
If installing S8PEs closely, keep the minimum dis tance of 10 cm at
50 °C ambient, 5 cm at 20 °C am bient.
Generating (±) Output Voltage
An output of ± can be generated as shown below, since the S8PE
has a floating output.
+V
−V
Serial Operation
As shown below, the output voltage from each S8PE can be added.
Types must be the same.
+V
−V
+V
−V
Parallel Operation
As shown below, The Power supply can use for paral lel operation.
All the output voltage of each S8PEs should be exactly the same.
Also, make sure that the thickness and the length of all wires con-
nected to the load are the same to ensure that the wires will have no
voltage drop difference. Types must be the same.
+V
−V
+V
−V
+V
−V
Three phase input switch mode Power Supply S8PE L-105