Operation - Siemens SIRIUS 3UG4 Equipment Manual

7.4

Operation

Parameters
Parameterization of the devices is possible locally using the display and the three keys.
Parameter information
The table below shows the settable parameter information of the 3UG4621 and 3UG4622
current monitoring relays:
Table 7-2 Parmeter information, 3UG4621 and 3UG4622 current monitoring relays with digital setting
Menu Parameters
level
"RUN" Threshold for undershoot (I▼)
"RUN" Threshold for overshoot (I▲)
"SET" Hysteresis (Hyst)
"SET" ON-delay time (onDel)
"SET" Tripping delay time (
"SET" Reset response (Mem)
"SET" Relay switching behavior
(closed-circuit principle NC /
open-circuit principle NO)
3UG4621 current monitoring relay
1)
2) 3UG4622 current monitoring relay
Note
"Overshoot" monitoring mode is activated when the undershoot threshold is set to OFF.
"Undershoot" monitoring mode is activated when the overshoot threshold is set to OFF.
Note
Deactivating monitoring
If the upper and lower threshold values are deactivated (OFF), monitoring will cease for:
• Current overshoot
• Current undershoot
The up-to-date measured value is displayed permanently.
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
Setting range
Minimum value
3.0 mA or OFF
0.05 A or OFF
3.0 mA 1)
0.05 A
2)
0.1 mA 1)
0.01 A
2)
0.1 s
) 0.1 s
I D el
▼
no = Autoreset
NC / U = on or NO / I > 3 mA
s
NC / U = on or NO / I > 50 mA
s
3UG4621/3UG4622 current monitoring relays
Maximum value
500 mA
1) 1)
10.0 A
2) 2)
500 mA or OFF
10.0 A or OFF
2)
250.0 mA 1)
5.0 A
2)
20 s
20 s
yes = Hand‑RESET
1)
2)
7.4 Operation
Increment Factory setting
0.1 mA 50 mA
1)
0.01 A 1.5 A
2)
1) 0.1 mA 1) 150 mA
0.01 A 2.5 A
2)
0.1 mA 1) 10.0 mA
0.01 A 0.5 A
2)
0.1 s 0.1 s
0.1 s 0.1 s
-- no = Autoreset
-- NC / U
1)
2)
1)
2)
1)
2)
= on
s
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