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2.2
Intended use
8019321/2024-10-01 | SICK
Subject to change without notice
The manufacturer and operator of the machine on which the safe motor feedback
system is used are responsible for coordinating and complying with all applicable safety
specifications and regulations, in cooperation with the relevant authorities.
The manufacturer of the drive system connected must have complied with the safety
requirements for the drive system design described in the implementation manual,
"HIPERFACE DSL
®
Safety".
The motor feedback system is ideal for the dynamic and precise operation of servo-con‐
trol circuits due to its equipment.
The overall system, which consists of a motor feedback system, encoder, evaluation
system, servo inverter, and motor, forms a control circuit.
The safety-oriented use of safe motor feedback systems with a HIPERFACE DSL®
interface concerns application in combination with servo systems that work with three-
phase AC synchronous motors and alternatively asynchronous motors.
The following information can be derived from the digital position signals of a motor
feedback system connected directly to a motor shaft:
•
(Rotational) speed information and commuting information in AC synchronous
motors
•
(Rotational) speed information in asynchronous motors
The safe motor feedback system can be used in conjunction with a drive system in
accordance with IEC 61800‑5‑2, in safety applications up to category 3 and PL d in
accordance with EN ISO 13849 or SILCL2 in accordance with EN 62061.
It fulfills the requirements of the Machinery Directive 2006/42/EC and provides sup‐
port for the drive system in ensuring:
•
The safety functions, based on the safe position or speed information of the motor
feedback system.
•
In the case of safety functions that are based on the safe absolute position, the
motor feedback system only supplies one channel without safety-related diagnos‐
tics upon being switched on. A second channel must be implemented by the user
using other measures. This second channel can be provided by the user by saving
the position of the motor feedback system before switching it off and comparing
it to the starting position of the motor feedback system when switching it on the
next time. Use for absolute position safety-related purposes is possible only if
the values match. Otherwise, a reference run must be carried out by the user.
Without a second channel, a reference run must be carried out each time the
motor feedback system is switched on to confirm the absolute position.
The motor feedback system is not able to create a safe state for the drive system
independently. The drive system has to create the safe state as a response to an error
displayed by the motor feedback system.
OPERATING INSTRUCTIONS
O P E R A T I N G I N S T R U C T I O N S | EFS/EFM50-2
en
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