4
PWR Series Setup Guide
The PWR is a constant voltage/current regulated DC power supply
that is capable of delivering voltages and currents in a wide oper-
ating range within the rated output power. Figure shows the operat-
ing area of the 400 W type.
A
in the figure indicates the rated operating area, and
B
indicates
the extended operating area. The extended operating area is valid
only on the L type.
If the PWR is configured in way that satisfies the equation output
voltage x output current ≤ rated output power, the PWR operates as
a conventional constant voltage/current power supply.
If the PWR is configured in a way that satisfies the equation output
voltage x output current > rated output voltage, the actual output is
limited by the power limit (approx. 105% of the rated output power)
and the output voltage or output current varies depending on the
load value.
5
0
0
0
25
40
10
80
16
0
320
64
1.25
6.25
A
B
ＰＷＲ
400
Ｌ
ＰＷＲ
400M
0 0.615
2
ＰＷＲ
400
Ｈ
Ｐ
Ｗ
Ｒ
400
Ｌ
Ｐ
Ｗ
Ｒ
400M
0
650
200
Ｐ
Ｗ
Ｒ
400
Ｈ
O
utput v
oltage [
V
]
Output current [A]
Rated output poer (400W) line
L
type only
The output current must be derated with respect to the temperature
at ambient temperatures greater than or equal to 45 ºC (30 ºC when
operating in the extended operating area) on the L type and 40 ºC
on the M/H type.
0
10
20
45
30
40
50
80
160
Ambient temp. [
°
C]
Output current [%]
100
(Rated output current)
Extended operating
area
Rated operating area
L type
M/H type
Description of Operation
