Electronic Shutdown And Constant Current Operating Modes - Siemens SITOP PSU8600 Manual

3.6 ELECTRONIC SHUTDOWN and CONSTANT CURRENT operating
modes
Two overload responses can be defined for output 1:
● In the ELECTRONIC SHUTDOWN operating mode, overload is permitted for a defined
time. The output is electronically switched off after the limit value has been exceeded,
see Chapter "Overload shutdown and carrying out a reset (Page 85)".
● In the CONSTANT CURRENT operating mode, an overload current is continually
permissible according to a defined characteristic (U/I characteristic). The overload current
is limited for 5 seconds to a maximum of 150 % of the set value of the current
potentiometer (LED "ON/OFF/RST" of the output flashes quickly). The current is then
limited to 100 % of the set value as long as the overload exists (LED "ON/OFF/RST" of
the output slowly flashes green).
In addition, in this operating mode, if a CNX8600 expansion module is not being used, a
brief Power Boost (300 % for 25 ms) is provided so that the downstream circuit breaker
can trip when an overload condition occurs.
Note
How the system responds to overload may only be switched over when the power supply
system is in a no-voltage state.
The switchover is made at DIP switch with the designation "UI-1"
When delivered, the DIP switch "UI-1" is in position "OFF" (ELECTRONIC SHUTDOWN
operating mode).
Power supply system SITOP PSU8600
Manual, 09.2018, A5E36758446-5-76

3.6 ELECTRONIC SHUTDOWN and CONSTANT CURRENT operating modes

Operator control at the device
⑥
(see operator controls).
93