56
12 Monitoring welded relay contacts
The
TECHNIVOLT
charging station has a function for detecting welded relay contacts in
accordance with the requirements of IEC 61851-1 and EV/ZE Ready. This information is provided
by the PCB.
The output terminals of the plug CN33 are used to detect welded relay contacts.
A 230 V voltage will be present at the plug CN33 in the event of welded relay contacts. This
can be used to trigger a working current trigger remotely. The working current trigger is linked
mechanically with the line protection switch and switches it off if triggered. This interrupts the
mains power to the charging station.
The connection of the working current trigger is shown in the following Illustration .
Illustration 22: Connection working current trigger"
Connecting the control line to the charging station is carried out as follows Illustration .
Illustration. 23: Connection control line for working current trigger
NOTE
Introduction of the control line into the charging station is described in Chapter
„9.2 Data cable connection“, Page 47.
