April 2019

n NEW PRODUCTS Siemens has developed a technology that prevents centrifugal pumps in hazardous areas from running dry. The technique said to need less hardware, to provide early detection of faults, and to avoid damage to pumps. It also claimed to cut the time and money spent on maintenance, and to result in higher system availabilities and efficiencies. If a pump runs dry in a hazardous area, it can lead to potentially dangerous conditions. As the pump starts to run dry, its power consumption drops. The new technology detects the decreasing flow rates using special current/voltage modules that monitor the active power consumption of the motor and shut it down in time to prevent dry running. This eliminates the need for extra monitoring devices, such as level sensors. The system – based on Siemens’Simocode pro motor management system – can be integrated with control systems such as Simatic PCS 7, and includes interfaces for system- wide communication. It can send operating, service and diagnostic data, as well as process and measured values, to higher-level systems and the cloud. The technology has been certified as an ignition source monitoring device corresponding to a type b1 ignition protection system, in accordance with Atex and IEC Ex. Siemens www.siemens.com/simocode Bosch Rexroth claims that a new drive-based motion control function can cut machine programming and commissioning times by up to 90%, compared to traditional PLCs. With the Sequential Motion Control (SMC) function, users can program single- and multi-axis applications in Rexroth’s IndraDrive drives without needing an external control system. Individual commands control complete motion sequences and are executed one after another. They cover typical motion control functions such as independent positioning axes, axis and master axis couplings, synchronous operation, cam disc applications and sequential movements. Potential applications range from handling systems to flying cutters. Rexroth says that comparisons have shown that processes can be carried out up to 90% faster. For example, while it can take about one week to program and commission a flying cutter using a PLC, using SMC, the task can be completed in around four man-hours. Rexroth is offering pre- configured drives that relieve users of time-consuming routine tasks such as defining operating modes, diagnostics and error handling. The new function includes a manual mode, a parameterisation mode and an automatic mode for working through the programs. Bosch Rexroth www.boschrexroth.com Fortress Interlocks has launched a robust coded safety interlock which can cope with large mechanical misalignments, making it suitable for applications where guards are not fitted precisely as a result of design, manufacture, or use and abuse. The compact Atom interlock, part of Fortress’ncGard range, offers a high level of protection against tampering, and uses high-coded RFID (radio-frequency identification) to prevent actuator substitution. The solenoid-controlled interlock produces an 8kN locking and retention force. It needs minimal maintenance and is resistant to shock and vibrations. It provides OSSD (Output Signal Switching Device) outputs and up to eight interlocks can be connected in series, reducing installation costs. The 140 x 33mm device is sealed to IP65 and IP67, and is suitable for applications up to PLe / SIL3. TUV certification is pending. Fortress Interlocks 01902 349060 www.fortressinterlocks.com Motor monitor stops hazardous area pumps from running dry RFID interlock handles large misalignments Drive-based motion control function cuts machine set-up times by up to 90% ƐĚƌĂĚŶĂƚƐ hŽƚĚĞŶŐŝƐĞͻ hĞƌƵƚĐĂĨƵŶĂŵ ĞĐǁŽŶĞƌĂdͻ ϱϴϬϱ>hĚŶĂϭ - ϱϴϬϱ> ƐƌĞŵƌŽĨƐŶĂƌƚĚĞƚƐŝ>> ĚŶĂŶŐŝƐĞĚŽƚĚĞĮƟƌ Ϯ - Ĩ ƚƚůŝƵď - ŵŽƚƐƵͻ ŶƵŽƌĂŶƌƵƚƚƐĂ&ͻ ĚĞƌƵƚĐĂĨƵŶĂDͻ ŬϱŽƚ ϱϮͻ s s ƌŝƵƋĞƌĐĮŝĐĞƉƐƌƵŽLJŽ Ě <hĞŚƚŶŝ ŚƉϭ ƐƚŶĞŵĞ ƚĞůƉŵŽĐŶ/͘͘͘ ŝƵƋΘ dŶƌĞƚƐĂ ΛƐĞůĂƐ ϮϭϬ͗džĂ& ϮϭϬ͗ůĞd ƌĞǁŽƉĨŽůŽƌƚŶŽĐĞ Ěƚ>ƚŶĞŵƉ ƐƌĞŵƌŽƐŶĂƌ ŬƵ͘ŽĐ͘ĞƚĞ ϵϲϵϲϴϯϰϴ ϯϯϬϴϴϯϰϴ

RkJQdWJsaXNoZXIy MjQ0NzM=