30 INSTRUMENTATION/ELECTRONICS
➠
diagnostics and maintenance over the Internet and VPNs. One of the advantages of mGuard is that it is suitable for both new-build projects and for retrofitting to existing equipment. And because the mGuard can be configured with software – and configured or reconfigured remotely – there is no risk that the protection will be out of date by the time a machine with a long lead time has been assembled, tested and commissioned. Innominate offers its mGuard
technology in a number of formats, including the mGuard industrial RS firewall with VPN functionality (Fig. 2), the portable Innominate mGuard smart device, a low-profile PCI network card, the mGuard blade for mounting in 19 inch racks, and the mGuard delta four-port LAN switch. Innominate has also worked with Hirschmann Automation and Control to develop the Eagle mGuard that mounts on DIN rail and is equipped with a redundant power supply and two 10/100 Base-TX Ethernet ports, as well as a signalling switch (Fig. 3). Once the mGuard units are
installed and operating, the virus database on each one is updated fully
automatically. Any other configuration changes can be managed centrally via the Ethernet network, or remotely via the Internet, which makes it very simple and cost-effective to manage the security across a single plant or multiple sites.
M
Fig. 3. Innominate and Hirschmann Automation and Control have developed the
Eagle mGuard that incorporates a redundant power supply and two Ethernet ports.
odern IT and networking technologies certainly offer advantages to
machine builders, system integrators and plant operators, but the associated risks are not always immediately apparent. Cyber attacks tend to be something
that organisations think only happen to other people, whereas the potential for damage is so great that the threat needs to be taken very seriously. There is no single approach that is right for every organisation; as we have seen above, there are various software and hardware products, as well as suppliers that offer services to ensure the optimum set of measures is implemented. Care must be taken with choosing which route to take, but remember also that cyber security requires continuous management after the initial implementation. n
ENCODERS CAN REPLACE GLASS SCALES N
ewall Measurement Systems Ltd offer a complete DRO package. This package includes its linear encoders that utilise an inductive technology, namely Spherosyn and Microsyn. However, Newall claims that some companies do not immediately recognise or fully appreciate the benefits that inductive technology can offer, and have subsequently purchased DRO packages that utilise glass scale technology. After a period of time glass scales
can become extremely unreliable due to the very harsh working environment they are exposed to. The result of this is failure of the glass scale and subsequent down time of their machine tool, which can be very costly. Now companies can really enjoy the benefit of maximising their capital investment by replacing their unreliable glass scales, which are susceptible to contamination from cutting oil and swarf, with a range of newly developed
DSG & DMG linear encoders using evidence based Spherosyn and Microsyn technology. These new linear encoders are available with all types of signal output and resolution: TTL – 1µm, 2µm, 5µm or 10µm 1Vpp – 20µm signal period 11µApp – 20µm signal period plus a 40µm version which is no longer available from the original manufacturer. Both standard and slime-line profiles are available, so all mounting arrangements are
www.engineerlive.com
accommodated. Due to existing competitors supplying a variety of DRO displays into the conventional machine tool market, each of which can incorporate a different type of input connector, Newall offers a range of adapter cables that facilitate direct connection of their DSG or DMG linear encoder – making replacement even easier. Newall says glass scales that are currently being used in the conventional machine tool markets can be replaced with their new range of inductive based DSG and DMG linear encoders, and are so confident in their unrivalled reliability that they include a lifetime warranty on the scale as well as five year warranty on the reader head. n
Enter 30 or ✔ at
www.engineerlive.com/ede
Newall Measurement Systems Ltd is based in South Wigston, Leicester
, UK. www
.newall.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84