Siemens 3UG4 - Operator Controls and Connection Terminals

3UG4501 filling level monitoring relay
5.2 Operator controls and connection terminals
3UG4 / 3RR2 monitoring relays
90 Manual, 05/2016, NEB927043002000/RS-AC/004
5.2
Operator controls and connection terminals
Front view / terminal labeling
Front view
Description
Position digits
①
Terminal block (removable):
Connection is possible using screw terminals or spring-loaded terminals.
②
Rotary button for setting the monitoring mode.
③
Display field: drainage control (OV) or inflow control (UN)
④
Rotary button for setting the sensor sensitivity (R sens)
⑤
Rotary button for setting the tripping delay (Delay)
⑥
Device article number
⑦
Label
⑧
Status display: LED contact symbol (yellow)
⑨
Status display: LED coil symbol (green)
Terminal labels
A1+
Rated control supply voltage ∼ / +
A2-
Rated control supply voltage ∼ / -
M (GND)
Reference point
Min
Minimum level
Max
Maximum level
12
Output relay K1 CO contact NC contact
11
Output relay K1 CO contact root
14
Output relay K1 CO contact NO contact
You can find additional information on the connection terminals and the permissible
conductor cross-sections in the Chapter "Connection methods (Page 21)".
You can find information on connecting in the Chapter "Circuit diagrams (Page 95)".