Safety Functions; Introduction - Danfoss VLT FC 280 Operating Manual

VLT® Midi Drive FC 280
Operating Guide

6 Safety Functions

6.1 Introduction

The drive is integrated with Ethernet safety functions according to application needs.
According to EN IEC 61800-5-2, the following 2 safety functions are available within the drive:
• Safe Torque Off (STO): no torque is being fed to the motor can generate a rotation. (Stop category 0 according to EN IEC
60204-1.)
• Safe Stop 1 time controlled (SS1-t): motor decelerates within a specified deceleration time. Safe Torque Off is activated at the
end of a deceleration time. (Stop category 1 according to EN IEC 60204-1).
Both of the safety functions fulfill SIL3/SIL CL 3 (according to IEC 61508/61800-5-2/62061) and Category 3/PL e (according to ISO
13849-1) and can be triggered via:
• Digital I/O (terminal 37 and 38, referred at SGND terminal 39).
• Safety fieldbus.
The following safety fieldbuses are supported by the drive:
• PROFIsafe communication over PROFINET.
• FSoE communication over EtherCAT (subsequent version).
Communication over PROFIsafe is implemented according to the PROFIdrive on PROFIsafe amendment.
To view or download the certificate, search TÜV Functional safety FC 280 on www.danfoss.com.
DESIGN OF SAFETY SYSTEMS
The designing of safety-related systems requires special knowledge and skills.
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Only qualified persons are allowed to install and set up an advanced safety option board.
USE OF SAFETY FUNCTIONS
The use of safety functions provided by the drive does not in itself ensure safety.
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To make sure that the commissioned system is safe, make an overall risk assessment.
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Safety devices must be correctly incorporated into the entire system. The entire system must be designed in compliance
with all relevant standards within the field of industry. (Standards such as EN 12100 Part 1, Part 2, and ISO 14121-1 provide
methods for designing safe machinery and making a risk assessment.)
The information in this manual provides guidance on the use of the safety functions that FC 280 provides. This information is in
compliance with accepted practice and regulations at the time of writing. However, the product/system designer is responsible
for making sure that the system is safe and in compliance with relevant regulations.
The drive must be used in an environment where no conductive dust or contaminants are present.
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To ensure proper protection against contamination, use the drive in at least an IP54 enclosure.
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Safety Functions
AQ381425076031en-000101 / 130R1223