Renishaw, the global engineering technologies firm, and associate company RLS exhibited their latest solutions and products at the 2017 SPS Drives and Controls trade show from 28—30 November 2017 in the Nuremberg Exhibition Centre, Germany. A range of live demos and static exhibits have shown an array of products including the RESOLUTE™ FS encoder, VIONiC™ digital encoder and the new 2nd generation AksIM™ off-axis rotary encoder. The live demonstrations included a collaborative robot arm, functionally safe DDR motor with a laser safety barrier and Renishaw’s Advanced Diagnostic Tool (ADT) for set-up and calibration.
RESOLUTE FS – Renishaw’s first functionally safe absolute encoder
A live demonstration of Renishaw’s first functionally safe absolute encoder, RESOLUTE FS was on display during the trade show. The functionally safe encoder system addresses one of the major issues associated with modern manufacturing: making workflows more flexible including closer interaction between humans and machines. This is part of the Industry 4.0 framework and is essential for its realisation. The demonstration comprised a housed DDR motor surrounded by a safety light curtain enclosure. Any attempt to enter the enclosure will immediately stop the machinery, thus, demonstrating ‘Safety Stop’ 1 and 2.
The RESOLUTE FS system is certified as:
A Category 3 PLd rated part against ISO 13849:2015
Being suitable for use in a SIL2 application against IEC 61508:2010 and IEC 61800-5-2:2007
Appropriate for power drive system (PDS) use as defined by IEC 61800-5-2:2007
Suitable for PLd-rated robot control safety systems against ISO 13849:2015, ISO 13482:2014 and ISO 18646-1:2016
VIONiC – All-in-one digital incremental encoder
Designed for the world’s most demanding motion control applications, the VIONiC encoder series combines Renishaw’s renowned filtering optics with a new custom interpolation and monitoring ASIC (Application-Specific Integrated Circuit) that enhances dynamic signal processing and improves signal stability. All necessary interpolation and digital signal processing has been integrated inside the readhead to eliminate the requirement for additional external interfaces. The VIONiC range has been designed to reduce overall system size to the minimum achievable for a high-performance system, whilst delivering class-leading performance in terms of cyclic error, jitter, speed, resolution and accuracy.
ADT – Unrivalled ease of set-up and calibration
A live demonstration of Renishaw’s Advanced Diagnostic Tool (ADT) was also exhibited. ADT offers unrivalled ease of set-up and calibration. The software allows for the control and monitoring of VIONiC’s set-up and calibration routines. New software features include: enhanced graphics, automatically generated plots of signal strength vs position, Lissajous plots, DRO output, and readhead pitch indication. This set-up tool is ideal for factory production-line installation as it allows remote, advanced calibration features.
AksIM rotary encoder from RLS
AksIM™ is a non-contact high performance off-axis absolute rotary encoder designed for applications with limited installation space. The compact, low profile readhead detects and evaluates the magnetic field of a thin, axially magnetized ring. An interactive demo rig showed an application where several AksIM encoders have been integrated into a collaborative robot arm by Denmark-based Universal Robots (UR). This robot consists of a main body or skeleton, a servo-driven system, a reducer and a control system. Encoders are required for real-time position tracking of each rotating joint and are critical for the robot’s accuracy. Furthermore, the AksIM encoder has multiple self-monitoring functions, which support the UR robot’s operational safety.