Change-Over Switch - Siemens SITOP PSU8200 Manual

Description, device design, dimension drawing

2.5 Change-over switch

2.5 Change-over switch
Figure 2-8
The two switches A and B are used to influence the output characteristic curve:
Switch
A
influences the output
characteristic in the
load range
B
influences the output
characteristic in the
overload range
16
Selector switch
ON
Parallel operation:
'Soft' characteristic curve (see, e.g. Figure 6-6 Output
characteristic curve 6EP3333-8SB00-0AY0 parallel
operation (Page 42)) for the parallel operation of two
or more devices: The output voltage falls with increas-
ing 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.
Latching shutdown:
If the output current rises above the rated value and
above the current limit, the device reduces the output
voltage (see, e.g. Figure 6-9 Output characteristic
curve 6EP3333-8SB00-0AY0 latching shutdown
(Page 43)). If the output voltage falls below 20 V, the
device shuts down latching, the red LED lights up.
This limit voltage of 20 V is independent of the set
output voltage. The "Short-term overload current"
feature is not available in this operating mode.
6EP3333-8SB00-0AY0 and 6EP3334-8SB00-0AY0
are reset using power supply OFF for a minimum of
60 s or remote OFF and ON at the remote contact.
6EP1336-3BA10 is reset by switching the power sup-
ply OFF for at least 5 s.
To also guarantee that large capacitances can be
charged at the output in this operating mode, a non-
latching shutdown is not performed during the first
10 s after power ON or remote ON. During these first
10 s, the device responds for overload as if the switch
is OFF.
OFF
Single operation:
Delivery state
"Hard" characteristic curve (see, e.g.
Figure 6-3 Output characteristic curve
6EP3333-8SB00-0AY0 stand-alone op-
eration (Page 41)) for normal operation
(single operation): The output voltage is
independent of the output current.
Constant current:
Delivery state
If the output current rises above the rated
value and above the current limit, the
device reduces the output voltage. The
yellow LED lights up if the output voltage
falls below 20 V.
SITOP PSU8200 1ph
Manual, 11.2014, C98130-A7633-A1-3-7629