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Powerful module for safety-related applications complements the SD6 drive controller



The SD6 is a flexible stand-alone drive controller in the STOBER product range which is suitable for complex requirements and tasks in automation technology and mechanical engineering. Thanks to its 32-bit dual-core processor, the highly dynamic series responds very quickly to reference value changes and load jumps. The SE6 safety module is a new addition. In addition to the Safe torque off (STO) safety function, it provides the SD6 drive controller with other drive-based safety functions from EN 61800-5-2 at the highest level of safety—including extensive stop and monitoring functions. It also features a fast worst case response time as well as flexible, manufacturer-neutral interfaces. Together with integrated brake management for up to two brakes, the practice-oriented SD6 fulfills German Social Accident Insurance (Deutsche Gesetzliche Unfallversicherung, or DGUV) requirements for gravity-loaded vertical axes.

The 6th generation from STOBER offers powerful stand-alone and multi-axis drive controllers for highly-efficient multi-axis applications. The flexible SD6 is a part of this product family. This single-axis controller has a nominal output current of up to 85 amperes and is primarily used in drive-based applications with decentralized motion control.

The SD6 controls linear and rotational synchronous servo motors as well as asynchronous motors. Due to its modular interface concept and extensive accessories, it can be configured with precision to solve even the most specialized drive tasks. Communication modules for CANopen, EtherCAT or PROFINET can be selected for the connection to a higher-level controller.

The SE6 safety module is a new addition to the product portfolio; it is available as optional equipment for the SD6 drive controller. This makes the drive controller suitable for safety-related applications up to SIL 3, PL e (category 4) in accordance with DIN 61800-5-2 or DIN EN ISO 13849-1. The low worst case response time of less than ten milliseconds enables fast stopping, allowing the design engineer to keep safety distances to a minimum.

One of the highlights of the product is the safe brake management consisting of Safe brake control (SBC) and Safe brake test (SBT) with test cycle monitoring. “This enables our drive controller to fulfill the DGUV requirements for gravity-loaded vertical axes presented in Division Information Sheet No. 005/2012,” explains Markus Frei, Product Manager of Drive Controller Accessories at STOBER. “The DGUV trade publication forms the basis for the draft standard DIN EN ISO 16090-1:2016-02, where the topic of protecting vertical axes is described in a standard for the first time.”

In addition to the Safe torque off (STO), Safe stop 1 (SS1) and Safe stop 2 (SS2) stop functions, SE6 also enables functions for safe motion monitoring. The Safely-limited speed (SLS) and Safe speed range (SSR) functions ensure that the drive does not exceed the configured velocity limit values. Safe direction (SDI) monitors the configured direction of motion, and Safely-limited increment (SLI) limits the increment reliably. Safe operating stop (SOS) monitors an active stop. The issue of real-world suitability took priority during development together with Pilz GmbH & Co. KG. As a result, all safety functions can be used up to SIL 3, PL e (category 4).

SE6 offers the user the ability to respond variably when a limit value is exceeded or in the event of an emergency stop. “It is not always a good idea to shut off the drive controller immediately and perform an uncontrolled stop of the drive when a limit value is violated. For a fast and simple restart, it is usually better to deliberately stop the drive using the controller, and only to intervene with the drive controller if the controller fails to do so,” explains Markus Frei.

No special motors, encoders, cables or stall or speed sensing switches are needed to operate the SE6. The user can reuse existing drive configurations or switch to components that are suitable for the application. That, in turn, is usually associated with a reduction in system costs.

In order to continue increasing the productivity and availability of the machine, the monitoring mechanisms of the safety functions have been expanded beyond basic standardized requirements. Due to position-based limit value monitoring or the predictive hiding of interference signals, the intended limit values can be approached with a minimal interference distance.

In case of service, the user only has to swap the Paramodul removable data storage and confirm the replacement. This transfers the overall device configuration to the new drive controller. No special knowledge or software tools are required to do so.

Featuring a consistent two-channel structure, the SE6 tests the integrated components upon every device start-up, after every STO and during operation. As a result, cyclical function tests of safety functions that are subject to documentation at the end customer’s location can be eliminated.

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Mitsubishi Electric launches an HMI for extreme environments



HMIs have been widely used to facilitate operator control within the factory environment for many years now; however the growing application of automation outside the factory means that HMIs are expected to operate in much harsher, more demanding applications than standard products are used to. To address these needs Mitsubishi Electric has added a new ruggedized variant to their already comprehensive HMI product range.

The GOT2507T-WTSD is a 7″ HMI with an extended operating temperature range of -20°C to +65°C, and as it has protection ratings to IP67F/IP66F it can be cleaned with high a pressure washers without the need for additional protective measures. As a result, it is a perfect fit for industries such as consumer, food & beverage and utilities.

Whilst standard HMIs typically feature an operating temperature range from 0-55°C, the expanded temperature range of the GOT2507T-WTSD means it can be used in harsher environments without the need for heaters in the lowest temperatures or fans and coolers in the highest. This can significantly reduce operating expenses for the likes of food and beverage manufacturers and in power industry applications, as well as offering more flexibility for deployment where extreme temperatures are encountered.

Mitsubishi Electric’s HMIs are now being used in many outdoor applications such as car washes and EV charge points, consequently there is a need for brighter displays and tolerance to long-term exposure to UV light. The GT2507T-WTSD display offers an impressive 1000 cd/m2 which is over twice the brightness of standard HMIs as well as carefully chosen coating materials that reduce glare and won’t degrade when exposed to sunlight. Furthermore, since the structure of the front panel has been reinforced with a metal housing, this rugged model can be used in environments that are subject to shock or vibration.

Along with the increased strength and durability, users benefit from all the high performance features and functions of the existing GOT2000 models. These include multiple communication interfaces, comprising of 2 Ethernet ports, wireless LAN interface, USB, RS232 and RS422/485. In addition to this, a programmable text-to-speech audio output reinforces the information displayed on the screen and Mitsubishi Electric’s web server provides real-time machine visualisation using remote devices such as tablets, smartphones and PCs. All of these functions help improve productivity and reduce the total cost of ownership for machinery.

Mitsubishi HMIs are already widely used in the food & beverage and other traditional manufacturing industries, but we should expect to see further applications for the GOT2507T-WTSD in heavy machinery applications, parking systems, power conditioners, EV charging stands and other utility industries.

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Servo controller gets single-cable connection



The Kollmorgen S700 servo controller, available in the UK through INMOCO of Daventry, is now supplied with a single-cable motor connection, as are all Kollmorgen drives.

The benefits of connecting drives using just one cable are obvious in machinery and plant construction: they include faster installation, space savings, reduced inertia, and lower costs to name but a few. Following very positive experiences with the AKD and AKD-N servo drives, Kollmorgen is now also fitting the high performance S700 servo controller with its pioneering single-cable connection technology.

The S700 controller is from the Servostar series and primarily designed to fulfil demanding drive tasks. It can be programmed with a macro language similar to IEC 61131-3 and can integrate with safety technology up to and including SIL3. The S700’s features also include cogging compensation for excellent radial run-out characteristics.

INMOCO’s Gerard Bush explains that Kollmorgen is now able to connect its in-house developed digital resolver SFD or high-resolution Hiperface DSL encoder with a standard motor cable through its single-cable connection technology. “The result is a cost-efficient and slender installation,” he says. “As well as space savings, less cable is needed which reduces the load and inertia during positioning movements.”

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Clariant introduces new range of low foaming label-free emulsifiers for metal working fluids



Clariant, a world-leader in specialty chemicals industry, is launching two new emulsifiers suitable for replacing traditional alcohol ethoxylate emulsifiers in metal working fluid formulations. The new products Emulsogen® MTP 020 and Emulsogen MTP 030 join Clariant’s well-known Emulsogen MTP 070 to create an innovative new range of hazard label-free low foaming emulsifiers for the industry.

The new Emulsogen MTP 020/030/070 range combines an outstanding sustainability profile with performance-boosting properties that sets it apart from existing nonionic emulsifier options for cutting fluids. Extensive laboratory tests confirm that Emulsogen MTP 020/030 and 070 outperform traditional emulsifiers. Emulsogen MTP 020/030 and 070 are multifunctional additives offering excellent emulsification power, low foaming properties, lime soap dispersing power and lubrication. Each product has its unique performance profile, enabling the cutting fluid formulators to select the right product for each individual performance requirement. Importantly, the products perform well even with increasing fluid application pressures.

Emulsogen MTP 020/030/070 range offers highest eco toxicological profiles, being free of any label and Globally Harmonized System of Classification and Labelling of Chemicals (GHS) hazard statement. The products of the range carry no skin or eye irritating labels and are not toxic to aquatic life. Moreover, each is readily biodegradable according to OECD Test Guideline 301B and assigned WGK 1 according to the German Water Hazard Classification.

Emulsogen MTP 020, 030 and 070 have been awarded Clariant’s EcoTain® label for their sustainability and performance excellence. EcoTain recognizes products and solutions that significantly exceed sustainability market standards, have best-in-class performance and contribute overall to sustainability efforts of the company and its customers.

Ralf Zerrer, Head of Strategic Marketing and Innovation at Clariant BU Industrial & Consumer Specialties, said: “With our two new low foaming emulsifiers Clariant now offers the metal working industry a unique range of highly-sustainable low foaming non-ionic emulsifiers for boosting the performance of cutting fluids, even under tough operating conditions.”

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