SIRIUS 3UG48 monitoring relays

The SIRIUS 3UG4 monitoring relays for electronic and mechanical variables monitor all important characteristics that allow conclusions to be drawn about the functionality of a plant. Both sudden faults 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 delay 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, inc. resolution and unit, may be parameterizable as to which value is cyclically transmitted
• Transmission of alarm flag to a controller
• Full diagnosis capability by inquiry as to the cause of the fault in the diagnosis data set
• 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 make sure diagnosis data is not lost
• By integration to the automation level the option exists of parameterizing the monitoring relay 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 function 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 considerable 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 the controller can only 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 more information on the IO-Link bus system, see "Industrial Communication".

Safety note:

In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens products and solutions only represent one component of such a concept. For more information on the topic of Industrial Security, see http://www.siemens.com/industrialsecurity.

Use of conventional monitoring relays

Monitoring relays for IO-Link

Notes:

Devices required for the communication via IO-Link:

• Any controller that supports IO-Link (e.g. ET 200SP with CPU or S7-1200)
• IO-Link master (e.g. CM 4xIO-Link for SIMATIC ET 200SP or SM 1278 for S7-1200)

Each monitoring relay requires an IO-Link channel.

For more information on the IO-Link bus system, see "Industrial Communication".

Article No. scheme

Note:

The article number scheme shows an overview of product versions for better understanding of the logic behind the article numbers. For your orders please use the article numbers quoted in the selection and ordering data.