Engineering and remote access
7.4 SIMATIC STEP 7 in the TIA Portal
Power supply system SITOP PSU8600
Manual, 09.2018, A5E36758446-5-76
187
Buffering parameters
Parameter
Value range
Default setting
Buffer component disabled via control command Yes/no
No
Enable LONGLIFE operating mode
Yes/no
No
Threshold value for sufficient buffer readiness
10 - 90 %
85 %
Preferred UPS module when the line supply fails
•
Alternating discharge
•
UPS8600[1]
•
UPS8600[2]
Alternating discharge
Preferred charging mode for a system start
Yes/no
No
Enable short-time interruption at output 1
Yes/no
No
Time X: Dead time up to the beginning of short
time interruption
0 - 3 600 000 000 ms
3 000 ms
Time A: Wait time until the short-time interruption 0 - 3 600 000 000 ms
15 000 ms
Time B: Duration of short time interruption
0 - 3 600 000 000 ms
5 000 ms
Time C: Waiting time after shutdown completed
0 - 3 600 000 000 ms
3 000 ms
Define that only output 1 is activated when start-
ing from a battery module
Yes/no
No
Examples for conversion
ms (milliseconds)
s (seconds)
m (minutes)
3 000
3
5 000
5
15 000
15
¼
60 000
60
1
300 000
300
5
●
Buffer component disabled via control command
Buffer modules with double-layer capacitors can be deactivated using a control
command. If the parameters are to be activated, then all of the buffer components in the
system are deactivated. System buffering using buffer components is therefore
deactivated; this function can be used for smoothly commissioning the system.
Note
Deactivation via control command is independent of deactivation via control contact, and
further, has the same priority as deactivation using the control contact. This means that
both options to activate the buffer components (control command and control contact)
must be set at the same time (this corresponds to the default setting), in order to allow
the system to be buffered.
●
Enable LONGLIFE operating mode
In order to increase the service life of the buffer modules equipped with double-layer
capacitors, these can be operated in the LONGLIFE mode with reduced buffer capacity.
When the buffer module is completely charged, power failures of up to a maximum of 3 s
(6EP4293-8HB00-0XY0) or up to a maximum of 8 s (6EP4295-8HB00-0XY0) can be
buffered with a load current of 40 A.
