Description, device design, dimension drawing
2.5 Change-over switch
SITOP PSU8200/3800 3ph
18
Manual, 05.2018, C98130-A7638-A1-6-7629
2.5
Change-over switch
Figure 2-6
Selector switch A/B
The two switches A and B are used to influence the output characteristic:
Switch
ON
OFF
A
influences the output
characteristic in the
load range
Parallel operation:
"Soft" characteristic curve (see Figure 6-12 Output
characteristic curve 6EP3436-8SB00-0AY0 parallel
operation (Page 65) to Figure 6-19 Output character-
istic 6EP3447-8SB00-0AY0 parallel operation
(Page 67)) for parallel operation of two or more devic-
es: The output voltage falls with increasing output
current (namely, also for the overcurrent pulse!).
This means that for full output current the highest
output voltage can normally no longer be attained.
Single operation:
delivery condition
"Hard" characteristic (see Figure 6-3
Output characteristic curve 6EP3436-
8SB00-0AY0 single operation (Page 61)
to Figure 6-10 Output characteristic
6EP3447-8SB00-0AY0 single operation
(Page 64)) for normal operation (single
operation): The output voltage is inde-
pendent of the output current.
B
influences the output
characteristic in the
overload range
Latching shutdown:
If the output current rises above the rated value and
above the current limit, the device reduces the output
voltage (see Figure 6-21 Output characteristic curve
6EP3436-8SB00-0AY0 latching shutdown (Page 68)
to Figure 6-28 Output characteristic 6EP3447-8SB00-
0AY0 latching shutdown (Page 70)). If the output
voltage falls below 10/20/30/40 or 44 V, the device
shuts down latching, the red LED lights up. This limit
voltage of 10/20/30/40 V is independent of the output
voltage that has been set. The 'Short-time overload
current' feature is not available in this operating mode.
In order to also be able to charge large capacitances
in this operating mode at the output, non-latching
shutdown is performed during the first ten seconds
after power on. During these first 10 s, the device
responds for overload as if the switch is OFF.
Constant current:
delivery condition
The device reduces the output voltage if
the output current exceeds the rated
value and the current limit. The yellow
LED lights up if the output voltage falls
below 10/20/30/40 or 44 V.