Siemens EF6 Series Instrukcja Użytkownika Pobierz pdf (Strona 12)

3UG4 Monitoring Relays

for level and speed

3UG4 monitoring relays also detect non-electrical

parameters.

Our 3UG4501 level monitoring relays offer relia-

ble 1- or 2-point regulations and alarm messages

in case of overflow or dry running on the basis

of a simple principle: Almost all liquids are con-

ductive, which is utilized for the monitoring of

filling levels. If the probes are immerged in the

liquid, the current flows – if the probes fall dry,

no current flows.

The 3UG4651 speed monitoring relays monitor

the setpoint speed of motors for any exceedance

of the upper or lower limit. Implementing a peri-

odic continuous measuring, they monitor the

pulses per rotation delivered to the sensors at-

tached to the motor. Furthermore, the relays are

suitable for all functions requiring the monitoring

of a continuous pulse signal, e.g. belt operation

and clock time monitoring or bypass control.

Level monitoring

Your advantages:

• Global applicability due to wide voltage range from

24 to 240 V AC

• 2- and 3-pole wire electrodes for ease of mounting

from the top/bottom which can be individually

trimmed

• Bar-type electrodes for lateral mounting for higher

filling levels and minimum space requirements

• Flexible adjustment to various conductive liquids

due to analog sensitivity setting from 2 to 200 kOhm

• Compensation of wave movements due to

tripping delay times from 0.1 to 10 seconds

• Selectable supply or discharge function

• All designs featuring removable terminals and

optional screw-terminals or innovative spring-

loaded terminals

Application areas:

• 1- and 2-point level monitoring

• Overflow protection

• Dry running protection

• Leakage monitoring

Speed monitoring

Your advantages:

• Global applicability due to wide voltage range from

24 to 240 V AC

• Variable adjustment to upper or lower limit exceedance

or window monitoring

• Freely parameterizable delay times and reset behavior

• Permanent display of actual value or fault type

• Use of up to 10 sensors per rotation with extremely

slowly rotating motors

• All designs featuring removable terminals and optional

screw-terminals or innovative spring-loaded terminals

• Two- or three-conductor sensors and sensors with

mechanical switching or electronic output connectable

• Integrated auxiliary voltage for sensor

Application areas:

• Slip/breakage of a belt drive

• Load shedding

• Standstill monitoring (no personal protection)

• Transport item monitoring for completeness

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