The new HMI, above, with the Siemens PLC, right and the old control panel, above. By Adam Daffern, Technical Services Manager A manufacturer of boiler cylinders needed a quick fix when an old Siemens S7-200 PLC broke down on a critical machine. Our engineers were quickly on site in Wakefield to repair the unit and have the company back in production the next day. To safeguard the machine's long term operation, we planned a retrofit of the PLC, to parts that aren’t obsolete. A Siemens S7-1200 PLC was selected, as this was the closest modern replacement to the original along with a Unified four-inch HMI. Our technical services engineers studied the operation of the machine and prepared the new PLC program off-site to allow for a quick swap over. The retrofit was undertaken in a morning’s downtime, and the machine was back up and running for the afternoon shift to continue production. The customer was happy with the service, commenting that our new program managed to save a bit of time per cycle of the machine which allows more production throughput.
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By Steve Ormondroyd, Workshop Manager Although we are renowned for rewinding electric motors, our work often extends beyond that. For example, we recently rewound an alternator stator which had failed. It came from a small boat and was driven by the boat’s engine. Unfortunately, because of a seal leak on a coolant pump, the alternator suffered water ingress which caused the windings to blow to earth. As our pictures, above, show, it's now back to as-new condition. The pictures below show its condition on arrival at our Service Centre. We have also just completed the urgent rewind of a three-phase brake which is mounted to a large overhead crane. Westin Drives has introduced two ranges of WEG industrial alternators to complement the industrial motors and controls we already stock and distribute. WEG, one of the world's leading manufacturers of industrial electrical products, recently launched the range to the European market. The alternators are ideal for the supply of continuous prime and standby power. Popular applications include generator sets, UPS systems, data centres, mining and petrochemical. Our two WEG ranges are the G Plus Line – extremely cost effective and easy to maintain – and the AG10 Line, which delivers increased power density due to innovation in the electromagnetic design. We can help to ensure that the correct alternator for the application is supplied. Availability is usually ex stock and we are confident that our customers will be delighted with the quality, pricing and support. Our modern custom built workshop can also provide a repair and rewind service. We would welcome any enquiries for your alternator requirements. |
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