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Wide-ranging safety solutions – Wieland’s samos® range

13 June 2019

The expanded functions within Wieland’s samos® PRO COMPACT PLUS module enables comprehensive motion monitoring. Increasingly profound digitalisation and automation allows companies to respond more efficiently, more quickly and more flexibly. The progressively dynamic nature of processes and production sequences, however, also involve tougher requirements for the safety of man and machine. Against this background, Wieland Electric has upgraded its safety controller samos® PRO COMPACT and made it fit for motion monitoring.

No matter whether machines, systems, autonomous vehicles, lifts or wind turbines – wherever movement is involved, there can be no compromise on safety. As processes become increasingly automated, the monitoring of motion continues to gain importance. This can be optimally achieved using safety controllers. The very reason why Wieland now has all functionalities needed for comprehensive rotational speed, rotational direction and position monitoring integrated in its samos® PRO COMPACT.

Wide-range motion monitoring

The new Plus variant of the samos® PRO COMPACT safety controller has six functions for reliable speed, position and direction monitoring. The motion sensors detect the required pulses up to 70kHz, which the controller converts to speed, angle, position and direction. The motion functions, which are implemented according to EN 61800-5-2, compare the actual values with the limit values: If a permissible limit value or range is exceeded, appropriate safety measures come into effect. Allowing the motor to be safely stopped, doors to be closed or locked, or even an additional alarm to be triggered.

The major benefit of this functional expansion: Numerous safety functions can be realized with just one sensor element. Each functional module covers up to 4 ranges. In one controller, up to 25 rotational speed monitoring functions can be called up. This allows up to 100 speed or position ranges to be monitored by one basic module. In addition, the flexible units for limit values are proving to be extremely practical for international use of the samos® PRO COMPACT PLUS. Both the international SI standard system and the Imperial and US customary measurement system can be used.

The reliable SENC incremental encoder with HTL interface from Wieland Electric is also available as an accessory to the samos® range. This allows speed and angle at the axes to be reliably measured, thereby achieving an unparalleled safety level to PLe and SIL3. It is suitable for all the reliable speed, direction and position monitoring of all machines with referencing run and for automatic guided vehicles (AGVs). The SENC incremental encoder is available in sizes 58mm and 90mm with hollow and solid shafts and with the matching accessories.

The new Safe SENC incremental encoder with HTL interface from Wieland Electric is available as an accessory to the Wieland Samos range or for use with other third party systems and makes it possible to monitor the speed, direction, and position of the motor and/or machine load to provide secure feedback. Unlike a standard encoder, this safety encoder allows speed and angle at the axes to be reliably measured, achieving an unparalleled safety level to PLe (acc. EN13849) and SIL3 (acc. IEC61508). It is suitable for safety rated speed, direction and position monitoring of all machines. The SENC incremental encoder offers up to 1024ppr depending on accuracy requirements and is available in sizes 58mm and 90mm with hollow or solid shafts along with matching cables and accessories.

Wieland’s encoder has two separate channels to route data, one to transmit absolute digital data and the second for incremental analogue data and diagnostic data from the high on board sensors. It also has a safety-rated electrical interface to transmit the data from the slave encoder to the drive PLC, or safety control. It also has a safety rated communications protocol and on-board diagnostics/self-test.

The safety requirements for machine and system control are becoming more demanding in all areas. Wieland’s SENC incremental encoders with HTL interface assist in the implementation of safety functions, facilitating safe and efficient machine operation. Wieland Electric offers tailored, innovative solutions ranging from safety control technology right down to sensors.

Industry Connections: Wieland Electric Ltd

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-December 2019+