Ambient temperature around each power supply should not ex-
ceed the temperature range shown in the derating curve.
¿
PLA300F
F
A
N
Air flow
Terminal block
side
Vent hole
side
Fan side
More than
30mm
More than
30mm
More than
30mm
Terminal block
Terminal block
(A)
Vent hole
side
More than
30mm
Terminal block
Terminal block
(B)
(C)
(D)
(E)
Terminal block
Not available
¿
PLA600F
F
A
N
Air flow
Terminal block
side
Fan side
More than
30mm
More than
30mm
More than
30mm
Terminal
block
Terminal block
(A)
Vent hole
side
Vent hole
side
More than
30mm
Terminal block
side
Terminal block
(B)
(C)
(D)
(E)
Terminal block
Not available
¡
Avoid installation method (E), which can cause stress on the
mounting holes.
¡
Fan for forced cooling is built-in. Do not block the ventilation at
suction side (terminal block and vent hole side) and its opposite
side.
¡
When unit operates at dusty place, attach air-fi lter to dust into the
unit. In this case, avoid poorly ventilated environments.
¡
When internal fan stops, thermal protection circuit works which
stops the output. To keep reliability of the unit, periodic mainte-
nance of the fan is required.
¡
Expected life of fan (R(t) = 90%) is different by the used condition.
2.2 Parallel Operation
¡
Redundancy operation is available by wiring as shown below.
I
2
I
1
I
3
-
+
+
-
Load
Power
Supply
Power
Supply
Fig.2.2 Example of redundancy operation
¡
Even a slight difference in output voltage can affect the balance
between the values of I
1
and I
2
.
Please make sure that the value of l
3
does not exceed the rated
current of a power supply.
l
3
[
the rated current value
¿
PLA100F, PLA150F, PLA300F
¡
Parallel operation is not possible.
¿
PLA600F
¡
Available by option -W. Please refer to instruction manual “5. Op-
tion and Others”.
3
Assembling and
Installation Method
3.1 Installation Method
¡
Do not insert a screw more than 6mm away from the outside of
a power supply to keep enough insulation distance between the
screw and internal components.
6mm max
Chassis of
PBA series
Chassis of
customer system
Mounting Screw
PLA series
Fig.3.1 Mounting screw
¿
PLA100F, PLA150F
(A)
(B)
(C)
Terminal block
Terminal block
More than
20mm
¡
If you use two or more power supplies side by side, please keep
a suffi cient distance between them to allow enough air ventilation.
AC-DC Power Supplies Enclosed type
Instruction Manual
PLA-14
PLA
me̲pla1.indd PLA-14
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2014/03/04 10:34:43
2014/03/04 10:34:43
