Compact Power
Notes on Operation 49
787-1211 DC power supply, 12 V
Manual
Version 1.
1
.0
P o s :
5 3 . 6 /A lle S e rie n ( A llg e m ein e M o d ule ) /Ü b er s ch rif te n /E be n e 2 /K ur z sc hlu s s - u n d Ü be r la st ve rh a lte n - Ü be r sc hr if t 2 @ 1 9\ m od _ 13 9 9 29 0 71 5 30 7 _2 1 .d o cx @ 15 2 9 77 @ 2 @ 1
6.3
Short-Circuit and Overload Behavior
P o s : 5 3 . 7 /S e rie 7 8 7 (E P S IT R O N
) /I n Be t rie b n eh m e n/ K ur zs c hlu s s - u n d Ü be rla s tv e rh a lte n 7 87 -1 2 x1 @ 3 2\ m o d_ 1 53 3 53 4 19 1 1 34 _ 21 .d o cx @ 4 93 0 88
@ @ 1
The equipment's output is electronically protected from overload and short
circuits.
The following values apply to the description below:
•
I
OUT
Output nominal current (see Section “Device Description” >
“Technical Data”)
•
I
OUT(IST)
Actual output current
•
U
OUT
Output voltage (see Section “Device Description” > “Technical
Data”)
The output voltage U
OUT
is reduced if the output current I
OUT(IST)
is in the range
1.2 × I
OUT
< I
OUT(IST)
< 1.7 × I
OUT
(see Figure “Output Characteristics”).
In the event of a short circuit (1.7 × I
OUT
< I
OUT(IST)
), the output voltage U
OUT
is
switched off. The device checks whether the short circuit is still present through
cyclical re-activation of the output voltage (Hiccup mode, see Chapter “Device
Description” >> “Output”).
After eliminating the overload or short circuit, the device automatically supplies
the output voltage as indicated.
Figure 20: Output Characteristic
Table 30: Legend for Figure “Output Characteristic”
No. Description
1
I
OUT(ACT)
normal
2
Overload mode (1.2 × I
OUT
< I
OUT(IST)
< 1.7 × I
OUT
); constant power mode
3
Short circuit protection (1.7 × I
OUT
< I
OUT(IST)
); Hiccup mode
P o s : 5 3 . 8 /D o ku m e nt at io n allg e m e in /G lie d e ru n g se le m e nt e/ --- S eit e nw e c hs e l-- - @ 3 \m o d _1 2 21 1 0 80 4 50 7 8_ 0 .d o cx @ 21 8 1 0 @ @ 1
