Siemens SIRIUS 3UG4 - Page 190

DIP switch ON OFF
Position 2
Non-volatile (retentive) fault stor‐
age
Non-volatile fault storage activated
If retentive fault storage is activated, output
relays K1 and K2 remain in the fault state
even after a failure or active shutdown of
the supply voltage, until the device is reset
using the Test/Reset button or a remote re‐
set is carried out (jumpering of terminals
Y2 / Y3).
Non-volatile fault storage deactivated
If the function is deactivated, output re‐
lays K1 and K2 switch back to the good
state following failure or active shut‐
down of the supply voltage if there is no
longer an insulation fault after the sup‐
ply voltage has been restored. A remote
reset can also be carried out by switching
the supply voltage. However, a voltage
failure results in the loss of a saved warn‐
ing message or alarm message.
Position 1
Functional principle of output re‐
lays K1 and K2
Closed-circuit principle NC
Output relays K1 and K2 pick up after appli‐
cation of the supply voltage and successful
self-test and system diagnostics. If a fault
occurs, the output relays drop out. As long
as there is no fault, the output relays remain
in the active state.
Open-circuit principle NO
If a fault occurs, output relays K1 and K2
pick up. As long as there is no fault, the
output relays remain in the dropped-out
state.
Chapter "Wiring examples (Page 193)" shows the examples for the di󹪜erent monitoring modes.
The parameters are de󹪝ned in the Chapter "Parameters (Page 281)".
Tools required
The same screwdriver can be used to set the parameters as for wiring the insulation monitoring
relays.
Carrying out the self-test
The test function is only possible if there is no fault.
By operating the combined test/reset button, the insulation monitoring relay goes through an
internal test that checks the proper functioning of the operational device.
The output relays do not pick up or they switch to the fault status while the Test/Reset button is
pressed, while control contact Y1-Y3 is closed, or while the test functions execute after
application of the supply voltage. The test function can be started again at any time via the Test/
Reset button on the front or via a remote test button. The graphic below shows the connection
of the button for the remote test.
<
<
<
Figure 9-8 Remote test button
3UG458. insulation monitoring relay.
9.4 3UG4582/3UG4583 insulation monitoring relays
SIRIUS 3UG4 / 3RR2 monitoring relay
190 Equipment Manual, 07/2021, NEB927043002000/RS-AD/005