Engineering Data; Derating Curve; Overload Protection - Omron ZEN-PA03024 Datasheet

Engineering Data

Derating Curve

85 to 264 VAC or 110 to 350 VDC input
120
(1)
100
80
60
(2)
40
20
0
−30 −20 −10
0 10
−25
Ambient Temperature (°C)
95 to 110 VDC input
120
100
(1)
80
60
40
(2)
20
0
−30 −20 −10
0 10
−25
Ambient Temperature (°C)
Note: 1. The maximum ambient temperature for parallel operation is
45 ° C.
2. Parallel operation is not possible for an input of 95 to
110 VDC.
3. Although operation is possible in the (2) portion of the der-
ating curve, performance may be adversely affected, i.e.,
ripple noise may increase.
4. Internal parts may occasionally deteriorate or be damaged.
Do not use the Power Supply in areas outside the derating
curve (i.e., the area shown by shading (1) in the above
graph).
Installation
Correct
Standard mounting
Note: 1. Improper mounting will interfere with heat dissipation and
may occasionally result in deterioration or damage of inter-
nal parts. Use the standard mounting.
2. If there is a derating problem, use forced air-cooling. The
ambient temperature is specified for a point 50 mm below
the Power Supply.
4
Switching Mode Power Supply
For parallel
operation
(See note 1.)
20 30 40 50 60
45 55
20 30 40 50 60
55
Incorrect
Face-up mounting
ZEN-PA03024

Overload Protection

The Power Supply is provided with an overload protection function
that protects the load and the power supply from possible damage by
overcurrent. When the output current rises above 105% min. of the
rated current, the protection function is triggered, decreasing the out-
put voltage. When the output current falls within the rated range, the
overload protection function is automatically cleared.
Intermittent operation
0
The values shown in the above diagrams are for reference only.
Note: 1. Internal parts may occasionally deteriorate or be damaged
if a short-circuited or overcurrent state continues during op-
eration.
2. Internal parts may possibly deteriorate or be damaged if the
Power Supply is used for applications with frequent inrush
current or overloading at the load end. Do not use the Power
Supply for such applications.
Inrush Current, Start Up Time,
Hold Time
Input ON
AC input
voltage
Inrush current on input application
AC input
current
Output
voltage
Start up time (1,000 ms max.)
(Reference value)
50 100
Output current (%)
Input OFF
90%
Hold time (15 ms min.)
96.5%