EtherCAT Technology Group developing Safety Drive Profile
The IEC 61800-5-2 standard defines safety-relevant functions for drives. With these functions, safe stopping of the drive, e.g. Safe Torque Off (STO) or Safe Stop 2 (SS2), or safe monitoring of motion, e.g. Safe Limited Speed (SLS), can be achieved. With these features, dangerous movements at startup or during manual interaction with a machine can be avoided or limited in a safe manner.
In order to configure and control these internal drive safety functions in an open fashion, the ETG is now enhancing the Safety over EtherCAT protocol with a safety-related device profile for drives (Safety Drive Profile).
Based on the functions defined by IEC 61800-5-2, a control word is specified which enables the separate activation of these functions within the drive. Each function is represented by a bit in the control word. If a safety function is selected and operates within its boundaries, it is reported back to the supervision safety logic with a status word. All communication makes use of the underlying safety protocol. The definition of a uniform control and status word allows the user to operate safety drives from different vendors in the same way with their safety controller. The variety of function blocks inside the controller is reduced and the operation is simplified.
The configuration of the safety-relevant drive functions is also standardized within the profile. Typical implementations of the safety functions, which are defined by the IEC standard only in a very generic way, are considered and the corresponding parameters are described. Thus, an object dictionary is established and the user receives a uniform implementation and a vendor-independent understanding of the embedded functions within the drive.
The EtherCAT Technology Group also intends to make the Safety Drive Profile available to other interested organizations and technologies since, by design, the profile is independent from the safety bus system being utilized.
EtherCAT sets new standards for real-time performance and topology flexibility, while meeting or undercutting traditional fieldbus cost levels. An IEC and SEMI specification, EtherCAT features include high precision device synchronization, a cable redundancy option and a functional safety protocol (SIL3).
The EtherCAT Technology Group (ETG) is an organization in which key user companies from various industries and leading automation suppliers join forces to support, promote and advance EtherCAT technology. With over 850 members from 44 countries, the EtherCAT Technology Group has become the largest organization in the world that is exclusively focused on Industrial Ethernet technologies. Founded in November 2003, it is also currently the fastest growing fieldbus organization.
MORE INDUSTRY NEWS
Diakont’s releases Lubrication Exchange System for actuators
Diakont has developed a technology to further reduce maintenance requirements for their electric actuators. For high duty cycle applications that...
Veracity announces participation in cybersecurity effort for US Department of Energy
The team, which includes engineers from Veracity, Schweitzer Engineering Laboratories, Inc. (SEL) and Sempra Renewables, will focus on developing...
Yokogawa announces strategic alliance with eSimulation
The alliance is intended to expand the advanced automation solution portfolios of both companies to bring enhanced value to the North American oil...
Elipse provides remote monitoring for Vietnamese electric company
Thanks to Elipse Software’s solution, EVNNPC can now access remotely the data from switches, fire alarm systems, meters, relays, transformers,...
VDW works to revise machine tool safety standards
The intention is to present a harmonized standard on the VDW’s “Safety Day” at the EMO Hannover on 19 September 2017.
ABB provides controlled transmission drives for Indian mining company
Located in Northwest India, the mine delivers lignite, sometimes called brown coal, to the Jallipa Kapurdi coal-fired power plant. Initially the...
Bill’s Top 10 Automation & Control Trends for 2017 – Convergence, Divergence, or Chaos?
By Bill Lydon, Editor, Automation.com
2016 was an exciting year of innovation and exploration in industrial automation. All this cutting-edge...
Greer Industries chooses Emerson's Powerdrive FX variable speed drive to enhance mining production
The product is being used as a regenerative drive on a downhill conveyor at one of the company’s limestone mining facilities. Leroy-Somer was...
ELNOR delivers automated coffee grinding for MAHLKÖNIG
To meet MAHLKÖNIG’s high-precision requirements, ELNOR ensures accurate production and assembly of its motor parts. Engineers from ELNOR perform...
Control Techniques & Leroy-Somer's speed drives enhance energy efficiency for Dutch fishing vessel
The solution comprises a number of Unidrive M variable speed drives, along with motors, transformers, brake resistors, rectifier units and generators.