System Modules With Different Safety Functions; Overview - Danfoss iC7 Series Operating Manual

Operating Guide | iC7 Series Functional Safety
Modular control
24 V
S.INA
Safety hardware
and software
S.INB
S.FB
Power unit
Power
supply
DC+
DC-link
interface
DC–
Figure 1: iC7 Functional Safety System Architecture
Gray areas in the illustration indicate that the component is related to functional safety.

System Modules with Different Safety Functions

3.3

Overview

3.3.1
System modules with STO and SS1-t (+BEF2) provide the following safety functions:
Safe Torque Off (STO).
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Safe Stop 1 time-controlled (SS1-t): the motor decelerates within a specified deceleration time. STO is activated at the end of a
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deceleration time.
Both safety functions are designed and approved suitable for the requirements of:
Category 3 in EN ISO 13849-1
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Performance Level "e" in EN ISO 13849-1
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12 | Danfoss Drives Oy © 2024.09
Black channel
communication
Optical
fiber
Safety hardware
and software
=
U
V
3~
W
Motor
interface
iC7 Functional Safety
AQ477043679710en-000102 / 172K2965A