User Manual

3UG4501 filling level monitoring relay
5.6 Circuit diagrams
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
81
5.6 Circuit diagrams
Internal circuit diagram
3UG4501-.A.30
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3UG4501
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0
0D
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0LQ
Figure 5-1 3UG4501-.A.30 filling level monitoring relay
Wiring examples
Drainage control
A1 (+)
A2 (–)
M
11
12 14
K1
AC/+U
AC/0V
3UG45 01
K1
Max Min
29
'HOD\5VHQV
Two-step control
A1 (+)
A2 (–)
M
11
12 14
K1
AC/+U
AC/0V
3UG45 01
Max Min
K1
29
'HOD\5VHQV
One-point closed-loop control