Introduction; Purpose Of This Operating Guide; Additional Resources; Abbreviations - Danfoss iC7 Series Operating Manual

Operating Guide | iC7 Series Functional Safety

Introduction

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Purpose of this Operating Guide

1.1
This operating guide provides information on the functional safety features of the iC7 drives and is targeted at users already familiar with
the Danfoss iC7 series. It is intended as a supplement to the drive-specific guides.
The guide includes instructions on how to verify that the built-in functional safety features are active, and about configuring the safety
features.

Additional Resources

1.2
Additional resources are available to help understand the features, and safely install and operate the iC7 products:
Safety guides, which provide important safety information related to installing iC7 drives.
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Installation guides, which cover the mechanical and electrical installation of drives, or functional extension options.
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Operating guides, which include instructions for control options, and other components for the drive.
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Application guides, which provide instructions on setting up the drive for a specific end use. Application guides for application
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software packages also provide an overview of the parameters and value ranges for operating the drives, configuration examples
with recommended parameter settings, and troubleshooting steps.
Facts Worth Knowing about AC Drives, available for download on www.danfoss.com.
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Other supplemental publications, drawings, and guides are available at www.danfoss.com.
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Latest versions of Danfoss product guides are available for download at
documentation/.

Abbreviations

1.3
Table 1: Abbreviations Related to Functional Safety
Abbreviation
FIT
HFT
MTTFd
PFH
PFD
PL
Danfoss Drives Oy © 2024.09
Reference
–
EN IEC 61508-4
EN ISO 13849-1
EN IEC 61508-4
EN IEC 61508-4
EN ISO 13849-1
https://www.danfoss.com/en/service-and-support/
Description
Failure in time.
1 FIT corresponds to a failure per 1E9 hours of operation.
Hardware fault tolerance: HFT = n means that n+1 faults could
cause a loss of the safety function.
Mean time to failure - dangerous.
Unit: Years. Years are divided into Low, Medium, and High.
Probability of dangerous failures per hour.
Consider this value if the safety device is operated in high de-
mand or continuous mode of operation, where the frequency
of demands for operation made on a safety-related system is
greater than 1 per year.
Average probability of failure on demand, value used for low de-
mand operation.
Discrete level used to specify the ability of safety-related parts of
control systems to perform a safety function under foreseeable
conditions. Levels divided into a to e.
AQ477043679710en-000102 / 172K2965A |
Introduction
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