SIEMENS
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Siemens IK PI · 2015
IO-Link
SIRIUS 3UG48 monitoring relays for stand-alone installation for IO-Link
Speed monitoring
5
■
Overview
SIRIUS 3UG4851 monitoring relay
3UG4851 monitoring relays are used in combination with a
sensor to monitor drives for overspeed and/or underspeed.
Furthermore, the monitoring relays are ideal for all functions
where a continuous pulse signal needs to be monitored (e.g. belt
travel monitoring, completeness monitoring, passing monitoring,
clock-time monitoring).
■
Benefits
•
Variably adjustable to overshoot, undershoot or range moni-
toring
•
Freely configurable delay times and RESET response
•
Display and transmission of actual value and fault type to
controller
•
Use of up to 10 sensors per rotation for extremely slowly
rotating motors
•
2- or 3-wire sensors and sensors with a mechanical switching
output or solid-state-output can be connected
•
Auxiliary voltage for sensor integrated
•
All versions with removable terminals
•
All versions with screw or spring-type terminals
■
Application
•
Slip or tear of a belt drive
•
Overload monitoring
•
Transport monitoring for completeness
■
Selection and ordering data
•
For speed monitoring in revolutions per minute (rpm)
•
Two- or three-wire sensor with mechanical or electronic
switching output can be connected
•
Two-wire NAMUR sensor can be connected
•
Sensor supply 24 V DC/50 mA integrated
•
Input frequency 0.1 to 2 200 pulses per minute
(0.0017 to 36.7 Hz)
•
With or without enable signal for the drive to be monitored
•
Adjustable via IO-Link and locally, with illuminated LCD
•
Power supply with 24 V DC via IO-Link or external auxiliary
voltage
•
Overshoot, undershoot or range monitoring adjustable
•
Number of pulses per revolution can be adjusted
•
Upper and lower limit values can be adjusted separately
•
Auto, manual or remote RESET options after tripping
•
Permanent display of actual value and tripping state
•
1 CO contact, 1 semiconductor output (in SIO mode)
For accessories see page 5/53.
Measuring range
Adjustable
hysteresis
ON-delay time
adjustable
onDel
Tripping delay time
separately
adjustable
rpm
▲
Del/
rpm
▼
Del
Pulses
per revolution
Screw
terminals
Spring-type
terminals
rpm
rpm
s
s
Article No.
Article No.
Speed monitoring for overshooting and undershooting
0.1 ... 2 200
OFF
1 ... 99.9
0 ... 999.9
0 ... 999.9
1 ... 10
3UG4851-1AA40
3UG4851-2AA40
3UG4851-1AA40
3UG4851-2AA40
© Siemens AG 2014