SIEMENS
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Siemens IC 10 · 2017
Relays
SIRIUS 3UG48 Monitoring Relays for Stand-Alone Installation for IO-Link
General data
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Overview
SIRIUS 3UG48 monitoring relays
The SIRIUS 3UG4 monitoring relays for electronic and mechan-
ical variables monitor all important characteristics that allow
conclusions to be drawn about the functionality of a plant. Both
sudden disturbances and gradual changes, which may indicate
the need for maintenance, are detected.
Thanks to their relay outputs, the monitoring relays permit direct
disconnection of the affected system components and alerting,
e.g. by the triggering of a warning light. Thanks to adjustable de-
lay times the 3UG4 monitoring relays can respond very flexibly
to brief faults such as voltage dips or load changes and can thus
avoid unnecessary alarms and disconnections and increase
system availability.
3UG48 monitoring relays for IO-Link
The SIRIUS 3UG48 monitoring relays for IO-Link also offer
many other options based upon the monitoring functions of the
tried-and-tested SIRIUS 3UG4 monitoring relays:
•
Measured value transmission to a controller, including resolu-
tion and unit, may be parameterizable as to which value is
cyclically transmitted
•
Transmission of alarm flags to a controller
•
Full diagnosis capability by inquiry as to the cause of the fault
in the diagnosis data record
•
Remote parameterization is also possible, in addition to or
instead of local parameterization
•
Rapid parameterization of the same devices by duplication of
the parameterization in the controller
•
Parameter transmission through uploading to a controller by
IO-Link call or by parameter server (if IO-Link master from
IO-Link Specification V1.1 and higher is used)
•
Consistent central data storage in the event of parameter
change locally or via a controller
•
Automatic reparameterizing when devices are exchanged
•
Blocking of local parameterization via IO-Link possible
•
Faults are saved in parameterizable and non-volatile fashion
to prevent an automatic start up after voltage failure and to
make sure diagnostics data is not lost
•
Integration into the automation level provides the option of
parameterizing the monitoring relays at any time via a display
unit, or displaying the measured values in a control room or
locally at the machine/control cabinet.
Even without communication via IO-Link the devices continue to
function fully autonomously:
•
Parameterization can take place locally at the device,
independently of a controller.
•
In the event of failure or before the controller becomes
available the monitoring relays work as long as the control
supply voltage (24 V DC) is present.
•
If the monitoring relays are operated without the controller, the
3UG48 monitoring relays have, thanks to the integrated
SIO mode, an additional semiconductor output, which
switches when the adjustable warning threshold is exceeded.
Thanks to the combination of autonomous monitoring relay func-
tion and integrated IO-Link communication, redundant sensors
and/or analog signal converters – which previously took over the
transmission of measured values to a controller, leading to con-
siderable extra cost and wiring outlay – are no longer needed.
Because the output relays are still present, the monitoring relays
increase the functional reliability of the system, since only the
controller can fulfill the control tasks if the current measured
values are available, whereas the output relays can also be used
for the disconnection of the system if limit values that cannot be
reached during operation are exceeded.
The individual 3UG48 monitoring relays for IO-Link offer the
following functions in different combinations:
•
Phase sequence
•
Phase failure, neutral conductor failure
•
Phase asymmetry
•
Undershooting and/or overshooting of limit values for voltage
•
Undershooting and/or overshooting of limit values for current
•
Undershooting and/or overshooting of power factor limit
values
•
Monitoring of the active current or the apparent current
•
Monitoring of the residual current
•
Undershooting and/or overshooting of limit values for speed
Note:
For further information on the IO-Link bus system,
see page 2/101
onwards
.
Notes on safety
In order to protect plants, systems, machines and networks
against cyber threats, it is necessary to implement – and contin-
uously maintain – a holistic, state-of-the-art industrial security
concept. Siemens products and solutions represent only one
component of such a concept.
For more information on Industrial Security,
see
www.siemens.com/industrialsecurity
.
More information
Home page,
see www.siemens.com/relays
Industry Mall,
see www.siemens.com/product?3UG48
Conversion tool, e.g. from 3UG3 to 3UG4,
see www.siemens.com/sirius/conversion-tool
© Siemens AG 2016