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[ { "title": "PRODUCT NEWS | Eaton\u0026#039;s M22 Series Pilot Devices", "nid": "499", "body": "\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EEaton\u2019s M22 Pilot Devices - Proven and Versatile\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003E\u003Cimg alt=\u0022Eaton M22\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u002298cfb2d6-524b-4da6-a2e1-d80490654daa\u0022 height=\u0022158\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Eaton%20M22.png\u0022 width=\u0022776\u0022 class=\u0022align-center\u0022 /\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EOur extensive range of \u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cstrong\u003EEaton products and solutions\u003C/strong\u003E\u003C/a\u003E includes the M22 series Pilot Devices. These 22 mm pilot devices combine an attractive appearance and modular functionality. The M22 series is a full line of pilot devices with features specifically designed for OEMs and panel builders.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EFeatures:\u003C/strong\u003E\u003Cbr /\u003E\n\u003Cstrong\u003E\u003Cem\u003E1.\u00A0Ease of use\u003C/em\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe M22 uses a conventional mounting nut for fast, easy, secure installation. The mounting adapter snaps to the back of operators without the use of tools. Contact blocks and light units are available with spring-cage terminations for faster, secure, and vibration resistant wiring connections. M22 operators include a moulded sealing gasket and an oversized anti-rotation nib that holds operators firmly in place without twisting or slack.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E\u003Cem\u003E2. Flexibility and modularity\u003C/em\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe M22 line has field-convertible pushbuttons and field-convertible selector switches (from momentary to maintained operation and selectable key removable positions). In addition, the M22 E-Stop operators were designed with the correct \u201Ctravel to operate contacts\u201D so that they can be used with Eaton\u2019s miniature limit switches. Contact blocks are stackable, and two LED light units provide a range of 12\u201330 Vac/dc and 85\u2013264 Vac.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E\u003Cem\u003E3. Safety and security\u003C/em\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EM22 E-Stops are compliant with the ISO/EN 13850 machinery standards and has self-monitoring contact blocks available.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E\u003Cem\u003E4. Aesthetics and ergonomics\u003C/em\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe M22 series is a low-profile design with compact integrated LED light units. These LED light units utilize sophisticated technology and manufacturing to embed the electrical connections directly into the moulded housing and thereby eliminate the need for a printed circuit board. Finally, the selector switches have very good positive detent feel so that inadvertent switching is unlikely.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EWe are a Premium Distributor of Eaton products in South Africa and boast\u00A0in-depth product knowledge and technical expertise.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za?subject=Eaton Enquiry\u0022\u003E\u003Cstrong\u003ECHAT\u003C/strong\u003E\u003C/a\u003E to us for advice on an Eaton solution for your facility!\u003C/p\u003E\n", "created": "May 2021", "terms": "Electrical, Products, Eaton" }, { "title": "PRODUCT NEWS | Schneider\u0026#039;s TeSys T Motor Management System", "nid": "498", "body": "\u003Cp\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/videos.html#Schneider\u0022\u003E\u003Cimg alt=\u0022Tesys T\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u0022e1cc5e41-1a42-468f-8635-288c99a59477\u0022 height=\u0022301\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/1508_TeSys%20T.JPG\u0022 width=\u0022301\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Ch2\u003E\u003Cstrong\u003EAdvanced monitoring control and protection of electrical motors\u003C/strong\u003E\u003C/h2\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cstrong\u003ESchneider Electric\u0027s\u003C/strong\u003E\u003C/a\u003E TeSys T is a smart motor management system. When associated with a short circuit protection device and a contactor, the device provides full motor monitoring, control and protection for electrical motors.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EFeatures:\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe TeSys T motor management system provides protection, metering and monitoring functions for single-phase and 3-phase AC motors up to 1000 A.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ETeSys T is a smart system that can be adapted to any customer request with Custom Logic and is natively connected to any PLC on 6 protocols.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EThe range is comprised of three components:\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EMain Controller: provides current based protection and monitoring, communication, control and statistics features.\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EOptional expansion module: adds voltage, power and energy measurement\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EHMI: a flexible option to quickly monitor and commission a TeSys T system. Control features are also available through the HMI\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Cstrong\u003EBenefits:\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ETeSys T is a compact, smart and easy to select product that can be fully integrated in any automation system or connected to any PLC of the market.\u00A0Advanced protections, monitoring and pre alarming will dramatically increase process availability (less downtime) and reduce operation costs.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E1. Flexibility\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EFully open, it communicates with Ethernet protocols: Modbus/TCP and EtherNet/IP, Modbus, CANopen, DeviceNet, PROFIBUS DP protocols.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EDesigned to fit in IEC and NEMA MCC , it integrates 10 predefined control schemes and one custom mode that let adapt control mode, product behavior and even protections to any requests.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETeSys T can be controlled through its terminal strip, HMI or communication port. Having a central control in TeSys T will reduce the complexity of your installation, reduce the need of auxiliary equipment, save space and reduce costs.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EFully integrated into Blokset, Okken and Model 6 iPMCC TVDA, Advantys STB solution and in the Foxboro DCS.\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Cstrong\u003E2. Trust\u00A0\u00A0\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETeSys T is quickly becoming a worldwide standard thanks to its flexibility. Lots of customers in Metal/Mining/Mineral, Oil \u0026amp; Gas, Water Wastewater and other types of applications trust TeSys T to deliver.\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETeSys T is highly reliable and has a very long product life thanks to a state-of-the-art component selection (FRAM memory, Flexrigid PCB, etc.) to the all-in- one design and advanced electronic protection.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETeSys T Ethernet version enjoys daisy chain loop for higher redundant system.\u00A0\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Cstrong\u003E3. Prediction and Energy Management\u00A0\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETeSys\u00A0is able to accurately monitor current, voltage and power over a wide range and features advanced protection and warning functions. This accuracy is key for an effective protection and preventive maintenance.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EThe advanced protection and warning functions will allow TeSys T to predict process shutdowns and manage processes more efficiently.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EThe power monitoring capabilities makes TeSys T a green motor management system because it can help to better manage energy consumption.\u00A0\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETeSys T is fully integrated in Powerlogic systems to fully utilize its power and energy monitoring capabilities.\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u00A0\u003Cstrong\u003EApplications:\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe TeSys T range is designed for the management of critical processes in harsh environment for applications such as:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EWater Wastewater\u00A0\u003C/li\u003E\n\u003Cli\u003EOil \u0026amp; Gas\u00A0\u003C/li\u003E\n\u003Cli\u003EChemical\u003C/li\u003E\n\u003Cli\u003EMining and Mineral\u00A0\u003C/li\u003E\n\u003Cli\u003EMetals\u00A0\u003C/li\u003E\n\u003Cli\u003EFood \u0026amp; Beverage\u00A0\u003C/li\u003E\n\u003Cli\u003EPharmaceutical\u003C/li\u003E\n\u003Cli\u003ETransportation\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Cstrong\u003EWe are the largest distributor of Schneider Electric in South Africa!\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za?subject=Schneider Enquiry\u0022\u003E\u003Cstrong\u003ECHAT\u003C/strong\u003E\u003C/a\u003E to us for a Schneider solution for your facility!\u003C/p\u003E\n", "created": "May 2021", "terms": "Electrical, Products, Schneider" }, { "title": "LEARN | Condition Monitoring (part 4)", "nid": "496", "body": "\u003Cp\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cimg alt=\u0022motors\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u00224253c9e9-a97c-401a-9694-51f01c772adc\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/motors.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EAre electrical motor faults and failures a prominent cause of downtime in your facility? Then you should be engaging in methods to increase the lifespan of your equipment.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EIn our latest series on \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-1\u0022\u003E\u003Cstrong\u003ECondition Monitoring\u003C/strong\u003E\u003C/a\u003E, we\u2019re unpacking the various means of predictive maintenance and equipment preservation. \u00A0\u003C/p\u003E\n\u003Cp\u003EIn \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-1\u0022\u003E\u003Cstrong\u003EPart 1\u003C/strong\u003E\u003C/a\u003E, we start by reviewing the various benefits of a condition monitoring system, the commonly used techniques and the different types of condition monitoring systems that are implemented.\u003C/p\u003E\n\u003Cp\u003EIn\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-2---Vibration\u0022\u003E\u003Cstrong\u003EPart 2\u003C/strong\u003E\u003C/a\u003E\u00A0and\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-3---Vibration-continued\u0022\u003E\u003Cstrong\u003EPart 3\u003C/strong\u003E\u003C/a\u003E, we unpack vibration monitoring. We progress in the series with\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-4\u0022\u003E\u003Cstrong\u003EPart 4\u003C/strong\u003E\u003C/a\u003E\u00A0\u2013 an over view of motor circuit analysis. We end the series with\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-pt-5---Residual-Current-Monitoring\u0022\u003E\u003Cstrong\u003EPart 5\u003C/strong\u003E\u003C/a\u003E\u00A0- residual current monitoring.\u00A0\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMotor Circuit Analysis (MCA), as one of the techniques implemented in condition monitoring, assists in preventing downtime by improving the lifespan of \u003Cstrong\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003Eelectrical motors\u003C/a\u003E\u003C/strong\u003E.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EIn this article, we give an overview of motor circuit analysis \u2013 the types of testing it involves, as well as the potential faults that it can help to detect.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhat is Motor Circuit Analysis?\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMotor Circuit Analysis (MCA) is a diagnostic technique used in predictive maintenance. It is a de-energized low voltage test method that assesses the health of the motor and the associated cabling. It allows maintenance personnel to pinpoint the exact defects inside the electrical components of motors. A predictive maintenance expert will use \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-3---Vibration-continued\u0022\u003E\u003Cstrong\u003Evibration analysis\u003C/strong\u003E\u003C/a\u003E or \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Thermal-imaging-for-preventive-maintenance-and-safety\u0022\u003E\u003Cstrong\u003Einfrared imaging\u003C/strong\u003E\u003C/a\u003E to detect faults, but these techniques alone may not determine the exact cause.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003ECan MCA be used on all types of motors?\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMCA can be used on both AC and DC electrical motors. MCA can be initiated from the motor control centre (MCC) or directly at the motor. The advantage of testing at the MCC is that it allows for the entire electrical portion of the motor system to be evaluated. This includes the connections and the cables between the test point and the motor.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhat faults can MCA detect in a motor?\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003EAs mentioned previously, MCA is implemented to assess the health of a motor. It assists in identifying the following faults:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EResistance anomalies\u003C/li\u003E\n\u003Cli\u003EWinding contamination\u003C/li\u003E\n\u003Cli\u003EWinding shorts\u003C/li\u003E\n\u003Cli\u003EInsulation to ground\u003C/li\u003E\n\u003Cli\u003EImbalances\u003C/li\u003E\n\u003Cli\u003ERotor and back iron anomalies\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThese faults are found through the detection of electrical imbalances in the motor and the detection of insulation degradation. Imbalances that exist in the motor will create stray, circulating currents through the motor. These circulating currents create excessive heat in the motor, which accelerates the degradation of insulation. Ultimately, this could lead to inefficient operation as well as ineffective control techniques in certain motors. When a motor experiences insulation degradation, the result is reduced motor life and unsafe operating conditions.\u00A0\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhat are the different types of MCA testing?\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMotor circuit analysis consists of online and offline testing. Online testing, as the name suggests, is performed when the motor is operating in normal conditions whilst offline testing is done when the motor is de-energized.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMCA online testing is subdivided into current analysis and voltage analysis. Current analysis focuses on the rotating components such as loose or broken rotor bars, cracked end rings, rotor eccentricity, misalignment, and coupling/belt problems. Voltage analysis is performed to identify \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=NEW-SERIES--An-introduction-to-Power-Quality\u0022\u003E\u003Cstrong\u003Epower quality\u003C/strong\u003E\u003C/a\u003E issues such as \u003Cstrong\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=NEW-SERIES--Introduction-to-Power-Quality-part-3---Harmonics\u0022\u003Eharmful harmonics\u003C/a\u003E, \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=NEW-SERIES--Introduction-to-Power-Quality-part-2---Voltage-Instability\u0022\u003Evoltage imbalances and under/over voltages\u003C/a\u003E.\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMCA offline testing is commonly used for the measuring of resistance-to-ground. Measuring electrical characteristics such as impedance, inductance and capacitance will indicate the condition of the windings. The measurement of the inductance is a great indication of turn-to-turn shorts.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe measurement of capacitance to ground determines the amount of winding contamination (water, dirt, dust, etc.). A change in these parameters affects the impedance (total resistance of an AC circuit). These characteristics are measured phase-to-phase, as well as phase-to-ground, and then compared to each other. The percentage change obtained is then compared to the baseline to identify motor circuit defects.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhy should regular testing be scheduled? \u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ECertain tests can be performed once-off, whilst others are required to be done on a regular basis to determine the trend and understand the defect progression. It is thus best to test these motors on a set schedule. It will enable you to properly trend these characteristics and gives the reliability program the best chance to identify motor circuit defects.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u00A0\u003C/p\u003E\n\u003Cp\u003EDoes your facility experience downtime more regularly than you would like?\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EA comprehensive, failure modes-driven maintenance strategy for electric motors will help to reduce costly stoppages.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za?subject=Electrical Enquiry\u0022\u003E\u003Cstrong\u003ECHAT\u003C/strong\u003E\u003C/a\u003E to us to find out more!\u003C/p\u003E\n", "created": "May 2021", "terms": "Electrical, Education" }, { "title": "LEARN | Condition Monitoring (part 3) - Vibration continued", "nid": "493", "body": "\u003Cp class=\u0022text-align-justify\u0022\u003EWhen vibration increases beyond normal levels, it may be a sign of alignment issues or a source of trouble. In order to avoid costly downtime, you will need fast and actionable answers.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EIn our NEW series on \u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cstrong\u003ECondition Monitoring\u003C/strong\u003E\u003C/a\u003E, we\u2019re discussing what it entails to implement a condition monitoring system in a facility.\u003C/p\u003E\n\u003Cp\u003EIn \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-1\u0022\u003E\u003Cstrong\u003EPart 1\u003C/strong\u003E\u003C/a\u003E, we start by reviewing the various benefits of a condition monitoring system, the commonly used techniques and the different types of condition monitoring systems that are implemented.\u003C/p\u003E\n\u003Cp\u003EIn\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-2---Vibration\u0022\u003E\u003Cstrong\u003EPart 2\u003C/strong\u003E\u003C/a\u003E\u00A0and\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-3---Vibration-continued\u0022\u003E\u003Cstrong\u003EPart 3\u003C/strong\u003E\u003C/a\u003E, we unpack vibration monitoring. We progress in the series with\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-4\u0022\u003E\u003Cstrong\u003EPart 4\u003C/strong\u003E\u003C/a\u003E\u00A0\u2013 an over view of motor circuit analysis. We end the series with\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-pt-5---Residual-Current-Monitoring\u0022\u003E\u003Cstrong\u003EPart 5\u003C/strong\u003E\u003C/a\u003E\u00A0- residual current monitoring.\u00A0\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EWe continue to unpack vibration monitoring in this article, as we outline when and how to use vibration monitoring on assets.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EWhy choose vibration monitoring? \u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe need for actionable data in plants and other facilities is typically unquestioned by most reliability and maintenance teams. Where people typically diverge is in a few areas:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EWhen to measure/gather data\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EHow frequently to measure\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ETechnologies to add to assets\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EWhat is a PF Curve?\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EA P-F curve is used to indicate the health of machinery or equipment over time, to identify the interval between potential failure and functional failure. Wear and tear of a machine naturally occurs with continual use hence the eventual failure of it is inevitable.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe P-F curve below shows the time interval between potential failures on the upper left until machine failure occurs on the lower right. Most assets follow a curve in their lifecycle, from good to progressively worse, until they completely fail.\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cimg alt=\u0022The P-F Curve\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u0022806f1983-6a92-4554-9b27-a7b26908e316\u0022 height=\u0022303\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/PF-Curve-1.png\u0022 width=\u0022574\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhat is the importance of the P-F interval?\u003C/strong\u003E\u003C/p\u003E\n\u003Col\u003E\n\u003Cli\u003ELong before an asset fails, it usually begins to consume more energy and lose overall performance.\u003C/li\u003E\n\u003Cli\u003EThe earlier a problem can be detected and corrected, the less it costs to repair (an ounce of prevention is worth a pound of cure).\u003C/li\u003E\n\u003C/ol\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ECertain technologies have the ability to detect emerging failures long before the asset fails. These are often called \u201Cpredictive technologies,\u201D and are typically part of condition monitoring programs. This is a theoretical framework that may vary from asset to asset, and the point is not to say that personnel should repair a machine at the earliest sign of failure because it may be too early. These early indicators simply signal that additional maintenance actions, such as lubricating the bearings or beginning to plan and schedule maintenance, may help avoid unexpected failures and downtime.\u003C/p\u003E\n\u003Cp\u003EAs mentioned in \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-1\u0022\u003E\u003Cstrong\u003EPart 1\u003C/strong\u003E\u003C/a\u003E of the series, these technologies include Oil analysis, Ultrasound, Motor Circuit Testing, \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Thermal-imaging-for-preventive-maintenance-and-safety\u0022\u003E\u003Cstrong\u003EThermography\u003C/strong\u003E\u003C/a\u003E and \u003Cstrong\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-2---Vibration\u0022\u003EVibration\u003C/a\u003E\u003C/strong\u003E. Each technology may be used in combination or individually.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhen should vibration screening be used?\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EEvery machine component produces a unique vibration signal. Signals displayed in the spectrum often form characteristic patterns. Pattern recognition is a key part of vibration analysis, but significant training and experience are necessary to recognize and read the patterns. Vibration analysis can watch bearing wear across 12 to 18 months as they go from slight wear (no action) to extreme wear (replace bearings immediately). Oil analysis can only be performed on oil-cooled bearings (fewer and fewer are used every day). Ultrasound finds bearing wear too early to replace the bearings (used to know when to grease the bearings instead).\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ETable 1 below is a simplified overview of the patterns used to recognize the four most common machine faults, particularly in rotating assets.\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cimg alt=\u0022Table for machine faults\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u00227b8906e0-dbce-41fa-b15f-4e8aec5c8150\u0022 height=\u0022189\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Table%20for%20machine%20faults_0.jpg\u0022 width=\u0022625\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EVibration screening can identify abnormalities caused by most of these faults as they begin \u2014 in the early stages, providing precipitous warning of impending failure. Vibration screening devices provide quick feedback of the equipment condition by looking at the overall levels of vibration or bearing condition. This will allow for the maintenance team to understand whether there is a problem, instead of performing an in-depth spectrum analysis. The devices look at the entire vibration signal in low frequency, or the bearing signal in high frequency, and provide a single number for overall vibration or bearing condition. If the machine vibration or noise is higher, this value will increase.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe severity of the four common faults can be tracked over time based on the history from hundreds of thousands of machines that have been analysed by many vibration experts over 30 years. This knowledge and experience have been incorporated into rule-based algorithms and a baseline database that have been proven to be effective on standard rotating machines \u2014 motors, pumps, fans, compressors, blowers and single-shaft spindles.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EHandheld vibration meters can be used for route-based, preventive strategies. A more flexible method is screening with continuous remote, wireless sensors.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ERegardless of the method used, vibration technology can provide reliability and maintenance teams with actionable data that can help determine when further analysis is required to decide when steps such as re-lubrication, repairs or replacements should be made.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ECatch vibration issues early with vibration data that identifies imbalance, looseness, misalignment, and bearing failures. Do you need advice on what vibration tools and software is best suited for your specific requirement?\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za?subject=Electrical Enquiry\u0022\u003E\u003Cstrong\u003ECHAT\u003C/strong\u003E\u003C/a\u003E to us now!\u003C/p\u003E\n", "created": "May 2021", "terms": "Electrical, Education" }, { "title": "LEARN | Condition Monitoring (part 2) - Vibration", "nid": "491", "body": "\u003Cp\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cimg alt=\u0022vibration analysis\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u0022e3be24b6-98c1-4bd9-a6e7-b9bda50c6d24\u0022 height=\u0022309\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Fluke%20Vibration_0.jpg\u0022 width=\u0022465\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMonitoring machines for \u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/index.php\u0022\u003E\u003Cstrong\u003Evibration\u003C/strong\u003E\u003C/a\u003E can save you time and money. A machine going offline can impact quality and production. Monitoring machines for vibration issues identifies trends and helps reduce the potential for the machine going offline.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EIn our \u003Cstrong\u003ENEW series on Condition Monitoring\u003C/strong\u003E, we\u2019re unpacking what it entails to implement a condition monitoring system in a facility.\u003C/p\u003E\n\u003Cp\u003EIn \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-1\u0022\u003E\u003Cstrong\u003EPart 1\u003C/strong\u003E\u003C/a\u003E, we start by reviewing the various benefits of a condition monitoring system, the commonly used techniques and the different types of condition monitoring systems that are implemented.\u003C/p\u003E\n\u003Cp\u003EIn\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-2---Vibration\u0022\u003E\u003Cstrong\u003EPart 2\u003C/strong\u003E\u003C/a\u003E\u00A0and\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-electrical/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-3---Vibration-continued\u0022\u003E\u003Cstrong\u003EPart 3\u003C/strong\u003E\u003C/a\u003E, we unpack vibration monitoring. We progress in the series with\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-part-4\u0022\u003E\u003Cstrong\u003EPart 4\u003C/strong\u003E\u003C/a\u003E\u00A0\u2013 an over view of motor circuit analysis. We end the series with\u00A0\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--Condition-Monitoring-pt-5---Residual-Current-Monitoring\u0022\u003E\u003Cstrong\u003EPart 5\u003C/strong\u003E\u003C/a\u003E\u00A0- residual current monitoring.\u00A0\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E\u003Cu\u003EWhat is Vibration? \u003C/u\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EVibration is simply a back and forth movement\u2014or oscillation\u2014of machines and components in motorized equipment. Vibration in industrial equipment can be a symptom, or cause, of a problem, or it can be associated with normal operation. For example, oscillating sanders and vibratory tumblers rely on vibration to function. Internal combustion engines and gear drives, on the other hand, experience a certain amount of unavoidable vibration.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E\u003Cu\u003EWhat are the most common causes of vibration? \u003C/u\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EVibration can indicate a problem and if left unchecked can cause damage or expedited deterioration. Vibration can be caused by one or more factors at any given time, the most common being imbalance, misalignment, wear and looseness.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E1. Imbalance\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EA \u0022heavy spot\u0022 in a rotating component will cause vibration when the unbalanced weight rotates around the machine\u0027s axis, creating a centrifugal force. As machine speed increases the effects of imbalance become greater. Imbalance can severely reduce bearing life as well as cause undue machine vibration.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E2. Misalignment\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EVibration can result when machine shafts are out of line. Angular misalignment occurs when the axes of (for example) a motor and pump are not parallel. Misalignment can be caused during assembly or develop over time, due to thermal expansion, components shifting or improper reassembly after maintenance. The resulting vibration can be radial or axial (in line with the axis of the machine) or both.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E3. Wear\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EAs components such as ball or roller bearings, drive belts or gears become worn, they might cause vibration. When a roller bearing race becomes pitted, for instance, the bearing rollers will cause a vibration each time they travel over the damaged area. A gear tooth that is heavily chipped or worn, or a drive belt that is breaking down, can also produce vibration.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E4. Looseness\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EVibration that might otherwise go unnoticed can become obvious and destructive if the component that is vibrating has loose bearings or is loosely attached to its mounts. Such looseness might or might not be caused by the underlying vibration. Whatever its cause, looseness can allow any vibration present to cause damage, such as further bearing wear, wear and fatigue in equipment mounts and other components.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E\u003Cu\u003EWhat are the effects of vibration?\u003C/u\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EVibration can accelerate machine wear, consume excess power, and cause equipment to be taken out of service, resulting in unplanned downtime. Other effects of vibration include safety issues and diminished working conditions. When measured and analysed properly, however, vibration can play an important role in preventive maintenance programs. It can serve as an indicator of machine condition and allow plant maintenance professionals to act before damage or disaster strike.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EConsider these variables when analysing vibration:\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EDirection, such as radial or axial\u003C/li\u003E\n\u003Cli\u003EAmplitude, severity\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u003C/li\u003E\n\u003Cli\u003EFrequency, expressed in cycles per minute (CPM) or Hertz (Hz)\u2014one Hz equals one second, or 60 CPM\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EPlant maintenance technicians need to be able to differentiate between normal and abnormal vibration. A good understanding of vibration basics and the right tool is all a plant maintenance technician needs to quickly and reliably get to the bottom of vibration-related issues, including finding the root cause and severity, then determining the need for service or repair.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u00A0\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EAre you looking for solution to mitigate the effects of vibration?\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za?subject=Electrical Enquiry\u0022\u003E\u003Cstrong\u003ECHAT\u003C/strong\u003E\u003C/a\u003E to our experts about the Fluke range of vibration testers and software!\u003C/p\u003E\n", "created": "May 2021", "terms": "Electrical, Education" } ]