O P E R A T I N G I N S T R U C T I O N S
e n
1
About this document
Please read these operating instructions carefully before using the safe motor
feedback system or mounting it, putting it into operation or servicing it. The manu‐
facturer can only guarantee the safety function if these operating instructions are
followed consistently.
This document is an original document.
1.1 Purpose of this document
These operating instructions provide qualified technical personnel of the machine
manufacturer or the machine operator with instructions regarding the safe mount‐
ing, electrical installation, commissioning, operation and maintenance of the safe
motor feedback system.
These operating instructions are to be made available to all those who work with
the safe motor feedback system.
Furthermore, planning and using safety-oriented sensors such as the safe motor
feedback system also requires technical skills that are not covered in this docu‐
ment.
The official, legal and safety-relevant regulations for mounting and operating the
safe motor feedback system must always be complied with.
1.2 Symbols and document conventions
WARNING
A safety note informs you of real-world specifications for safely mounting and
installing the safe motor feedback system. This is intended to protect you
against accidents. Read and follow the safety notes carefully.
NOTE
Indicates useful tips and recommendations.
b
Instructions for taking action are indicated by an arrow. Carefully read and
follow the instructions for action.
1.3 Associated documents
•
“HIPERFACE DSL
®
Safety” technical information, part number 8017596, as
of 02.2017 (or newer)
•
Whitepaper "Supplementary notes for EES/EEM37 Motor feedback sys‐
tems", part number 8021843, as of 10.2017 (or newer)
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Safety information
This chapter concerns your own safety and the safety of the system operator.
2.1 General safety notes
The national and international legal specifications apply to the installation and
use of the motor feedback system, to its commissioning, and to recurring techni‐
cal inspections, in particular:
•
Machinery directive 2006/42/EC
•
Work Equipment Directive 2009/104/EC
•
Work safety regulations and safety regulations
•
Any other relevant safety regulations
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”.
2.2 Intended use
The motor feedback system is ideal for the dynamic and precise operation of
servo-control circuits due to its equipment.
The overall system, consisting of 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 AC 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 synchro‐
nous 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 SIL
CL
3 in accordance with EN 62061.
The safety integrity level of the encoder is SIL2. The systematic capability of the
encoder is SC 3. Only when applied in redundant architecture, the encoder can be
utilized for SIL3 applications, otherwise, i.e. when used standalone, it shall be uti‐
lized maximum for SIL2 applications.
It fulfills the requirements of the Machinery Directive 2006/42/EC and provides
support for the drive system in ensuring:
•
The safety functions, based on the safe absolute position information or the
incremental position information of the motor feedback system. The safety
functions apply only to one motor revolution (singleturn).
•
In the case of safety functions that are based on the reliable multiturn
absolute position, the motor feedback system only supplies one channel
without safety-related diagnostics upon being switched on. A second channel
must be implemented by the user using other measures. This second chan‐
nel 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. The multiturn
absolute position can only be used for safety-related purposes if the values
match. Otherwise, a reference run must be carried out by the user. If there is
no second channel for the multiturn absolute position, a reference run to
confirm the absolute position must be carried out each time the motor feed‐
back system is switched on.
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.
WARNING
The safe motor feedback system may be used only within the limits of the
prescribed and specified technical data, dimensions and tolerances of the
dimensional drawings and operating conditions, and the specified tightening
torques must be complied with.
If used in any other way or if alterations are made to the device – including in
the context of mounting and installation – this will render void any warranty
claims directed to SICK STEGMANN GmbH.
2.3 Improper use
The motor feedback system must be mounted and adjusted exactly in accordance
with the specifications of the installation instructions. Every faulty installation or
faulty adjustment of the encoder can impair the specified functions and data; par‐
tial restriction or a total failure of the specified safety functions cannot be ruled
out in individual cases.
WARNING
If stimuli near the resonance frequency (resonance point > 1,100 Hz) cannot
be reliably ruled out in the application, suitable tests must be carried out for
the entire drive system before commissioning the system. Suitable corrective
measures must be installed.
WARNING
Violations of the specified accuracy of the position value in the vicinity of the
resonance frequencies can occur due to physical restraints. If the mechanical
stimulation in the vicinity of the resonance frequencies has a very high ampli‐
tude, faults or failures of the specified safety functions can occur. We recom‐
mend avoiding operation in the vicinity of the resonance frequencies or at
least limiting the amplitude.
2.4 Requirements for the qualification of personnel
The safe motor feedback system may be mounted, put into operation, checked,
maintained, or used only by qualified safety personnel. A qualified person
•
is someone who has taken part in adequate technical training
•
has been instructed by a machine operator in machine operation and the
applicable safety guidelines and
•
can access these operating instructions.
3
Project planning
WARNING
The supply voltage must be generated from PELV systems (EN 50178). The
motor feedback system conforms to protection class III in accordance with EN
61140. If the supply voltage is not generated from PELV systems, the user
must take other measures to ensure safe disconnection for live parts.
WARNING
Use only temperature sensors with doubled or reinforced insulation because
there is no galvanic separation of the temperature sensor in the motor feed‐
back system.
The power supply unit current used for the motor feedback system must be
limited to a maximum continuous current of 1 A, either by the power supply
unit itself or using a fuse.
NOTE
When configuring the switch-on current, observe
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