Siemens SITOP DC UPS 6EP1931-2EC31 - 2. Settings; 2.1 Setting the Cut-in Threshold

2. Settings
All settings can be made using the DIP switch panel (Figure 2) on the front of the housing in a mechanically
coded manner
.
Note: DIP Switch 10 (compatibility) exists only on the SITOP 40A DC UPS module.
Figure 2: Setting the DIP switches
2.1 Setting the Cut-in Threshold
If the input voltage sinks below the set value of the cut-in threshold, the UPS module switches into buffer mode.
The consumers are then supplied solely by the battery module. The setting of the cut-in threshold takes place
using three DIP switches (for position, see Figure 2) according to Table 1.
Setting range: 22.0 to 25.5 VDC in 0.5V steps (delivery state: 22.5VDC  0.1V). Precision:  1.8%
cut-in treshold [
V ]
Table 1: Settable cut-in threshold [ V ]
© Siemens AG, 2009 4/18