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Overload detection
This power supply unit handles peak current values, so energization above the rated current for
a short period of time is possible. However, if continuous current continues to flow beyond the
rated current, there is a significant risk of decreasing service life or failure, so if excess current
continues for more than a certain time, the overload detection function shuts down the output
voltage.
The time it takes for the output voltage to be cut off with the overload detection function is
determined by how much the rated current is exceeded by. If the rated current is greatly
exceeded, the time limit characteristic shuts off the output quickly.
The dotted lines in Figure 4.1.5 and Figure 4.1.6 show the change in output voltage during
continuous flow of a current exceeding the rated current. In this range, an overload error occurs
after a certain time depending on the current value.
● PSA-24
26
25
24
23
[V]
22
21
20
0
Overload detection
Approx. 9.8 A
detection range
5
10
Output current [A]
Figure 4.1.5 Overload detection range (PSA-24)
4.1 Specification Details
Overcurrent detection
Approx. 18 A
Overload
15
20
25
4-8
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