Installation
5.2 Output-side connection
SITOP PSU100S
Operating Instructions, 02.2013, C98130-A7589-A1-3-7629
37
5.2 Output-side connection
At its output, the SITOP PSU100S power supply provides an isolated (= non-grounded)
SELV output voltage (Safety Extra Low Voltage). The output of the power supply is no-load,
overload, and short-circuit proof. If an overload occurs, the electronic current limitation limits
the output current to a maximum value (refer to chapter Technical data (Page 39)).
Figure 5-2 Connecting the output voltage (examples 6EP1334-2BA20 and 6EP1336-2BA10)
The output voltage is connected via the + and - terminals at the output of the power supply
(see Figure 5-2 Connecting the output voltage (examples 6EP1334-2BA20 a
nd 6EP1336-
2BA10) (Page 37)). Ensure that the output cables are dimens
ioned correctly for the
maximum output current rms value and fused accordingly.
Note
If the safety concept of the plant or system specifies that the DC output circuit should be
grounded (PELV), then it is permissible that the output voltage of the SITOP power supply is
grounded. In this case, ideally, the grounding at the output should be directly connected from
terminal "-" of the power supply to a suitable connection point of the protective conductor
system (PE) of the plant or system.