Description, device design, dimension drawing
2.5 Change-over switch
SITOP modular 1ph/2ph
14
Operating Instructions, 06.2014, C98130-A7548-A1-3-7629
2.5
Change-over switch
Figure 2-7
A/B selector switch
The two switches A and B are used to influence the output characteristic curve:
Switch
ON
OFF
A
influences the output
characteristic in the
load range
Parallel operation:
'Soft' characteristic curve (see, e.g. Figure 6-10
6EP1333-3BA10 parallel operation output
characteristic (Page 43)) for the parallel
operation of two or more devices: 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 state
'Hard' characteristic curve (see, e.g. Figure 6-3
6EP1333-3BA10 single operation output
characteristic (Page 41)) for normal operation
(single operation): The output voltage is
independent 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, e.g. Figure 6-14
6EP1333-3BA10 latching shutdown output
characteristic (Page 44)). 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-time overload current'
feature is not available in this operating mode.
To also permit the uploading of large
capacitances in this operating mode at the
output, a shutdown is performed during the first
10 s after power on or remote on in conjunction
with the non-latching signaling module. During
these first 10 s, the device responds for
overload as if the switch is OFF.
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.
Delivery state: A - OFF; B - OFF
