FEATURE Digitalisation
Decentralisation at its fi nest G
reater fl exibility and modularity are major trends in machine and plant engineering. It is increasingly common for
standard machines and additional units to be manufactured as separate mechanical and electronic units, joined together just before the full system is commissioned. The installation hardware must live up to the modularity of the machine. The Murrelektronik Cube67 fi eld bus system is exactly the right solution. With the combination of a Cube67 Diagnostics Gateway and the straightforward integration of IO-Link, Cube67 paves the way toward decentralisation and digitalisation in the cloud using OPC UA. The systems is used in over 100,000 machines and plants in various industries worldwide in diff erent products, many of which are equipped with multifunctional ports that can be confi gured as inputs or outputs, enabling fl exible installation concepts that are customised for a number of IOs at the sensor/actuator level, in order to meet the customer’s precise needs. This cost-effi cient solution leaves practically no port unused to achieve decentralisation at its fi nest.
Cube system advantages One major advantages of the Cube system is the “one cable” strategy: both communication and power are carried over just one system cable. This leaves cable channels and energy chains available, meaning that they can be designed smaller from the start, or eliminated entirely. The six-pole M12 connector also eliminates the possibility of wiring errors.
Up to 32 modules can be connected to each bus node, using four lines within an installation radius of 60m, making the Cube system perfectly suited for extensive installations. The lines are protected by integrated electronic fuses (MICO), the proven Murrelektronik current monitoring system, saving space in the control cabinet by not needing circuit breakers. A complete portfolio of modules ranging
from protection level IP20 to IP67 and even IP69K is available for installations. Meanwhile, the communication only ever runs through a single bus node, which can also be swapped out, depending on the protocol in use. It is also possible to change the protocol without changing
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are integrated directly into the installation concept, without needing a safety relay reduces the wiring while saving considerable space in the rack cabinet.
the system. In other words, an identical installation concept (Profi bus, Profi Net, Ethernet/IP, EtherCAT) can be designed for diff erent protocols by simply choosing the appropriate bus node. To prevent diffi culties when getting
diff erent machine modules to work together, the Cube system off ers machine option management (MOM). The related hardware and software planning is carried out virtually, based on a standardised full confi guration. The components in the machine are activated automatically, making confi guration of all its parts simple and easy. This simplifi cation streamlines everything for the user. Optional add-ons can be confi gured easily with the press of a button, without needing time-consuming software modifi cations.
Direct integration of safety signals The idea of streamlined machine installations can proove challenging when integrating safety aspects. The Cube system off ers a very good solution to this problem: combining Cube67 K3 modules with the MVK Metal Safety block module is an aff ordable way to duplicate safety outputs.
The module’s safety outputs will
securely switch off up to 12 standard outputs, controlled by a Profi Net/ PROFIsafe control system (K3 functionality). They are divided between two safety circuits, each with three ports suitable for double connections. This approach is a simple yet eff ective way to reduce costs and labour. Safety sensors
Highly-detailed diagnosis One of the core advantages of the Cube system is its range of informative diagnostic capabilities, which extend from the bus node across the entire installation to the individual modules and channels. The extensive information saves time during commissioning and is advantageous in troubleshooting, saving on costs that can result from even short downtimes. Cube off ers easily identifi able diagnostics with red LEDs that show maintenance at a glance which port is aff ected by an error. This diagnostic functionality can be used in detail via programming of the relevant control system.
The Cube67 Diagnostics Gateway off ers
a more effi cient, time-saving and highly- integrated diagnosis method as it allows troubleshooting without any programming involved. The module is unique in the market and is suitable for both new and existing installations. It precisely evaluates all signals and diagnostic messages from the entire installation, independently of the control system. The network topology and any errors that arise are clearly visualised in a user-friendly, multilingual web interface. The data is also available over a standard OPC UA interface for further analysis in any cloud system. This all takes place entirely independently of the control system, making it an integral part of the installation that need not be changed even if the control system is changed.
52 smart IO-Link devices Thanks to specially-designed modules, Cube67 is also excellently suited for the integration of smart IO-Link sensors. Up to 52 IO-Link devices can be connected to a single node – an impressive number compared to the competition! Murrelektronik makes installation even easier with a wide selection of accessories.
CONTACT:
Murrelektronik
www.murrelektronik.uk/gb
Automation | September 2021
39
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