WAGO 787-1216, Manual

Page: 34 / 42

0787-1216 Notes on Operation
34 Product manual | Version: 1.0.0
Compact Power Supply
-30 -20 -10 0 10 20 30 40 55 70 60 50
40
20
60
80
100
Load (%) Derating Curve
Surrounding Air Temperature (°C)
Figure 21: Temperature Load Curve
7.4 Short-Circuit and Overload Behavior
The product’s output is electronically protected against overload and short circuits.
The following values apply to the description below:
• I
OUT
Nominal output current (see 8 Technical data [ } 15] )
• I
OUT(IST)
Actual output current
• U
OUT
Output voltage (see
8
Technical data [
}
15] )
The output voltage U
OUT
is reduced at an output current I
OUT(IST)
in the range 1.05 × I
OUT
<
I
OUT(IST)
< 1.35 × I
OUT
(see Figure ).
In the event of a short circuit (1.4 × I
OUT
< I
OUT(IST)
) the output voltage U
OUT
is switched off.
The product checks whether the short circuit is still present through cyclical re-activation
of the output voltage (Hiccup mode, see also
8 Output [ } 17] ).
After eliminating the overload or short circuit, the product automatically supplies the out-
put voltage as indicated.
100% 105% 135% 140% 160%
Constant
Power Mode
24
(VDC)
0
OUT
normal
I
Overload Mode
(105 % up to 135 %)
Constant Power Mode
Short Circuit Protection
(140 % up to 160 %)
Auto Recovery
OUT
U
OUT (ADC)
I
Figure 22: Output Characteristics