Altivar Process ATV630 Parts list manual

EAV64334.06
www.schneider-electric.com
A
ltivar Process
EAV64334 06/2017
Altivar Process
Variable Speed Drives ATV630, ATV650,
ATV660, ATV680
Embedded Safety Function Manual
06/2017

2EAV64334 06/2017
The information provided in this documentation contains general descriptions and/or technical character-
istics of the performance of the products contained herein. This documentation is not intended as a
substitute for and is not to be used for determining suitability or reliability of these products for specific user
applications. It is the duty of any such user or integrator to perform the appropriate and complete risk
analysis, evaluation and testing of the products with respect to the relevant specific application or use
thereof. Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for
misuse of the information contained herein. If you have any suggestions for improvements or amendments
or have found errors in this publication, please notify us.
You agree not to reproduce, other than for your own personal, noncommercial use, all or part of this
document on any medium whatsoever without permission of Schneider Electric, given in writing. You also
agree not to establish any hypertext links to this document or its content. Schneider Electric does not grant
any right or license for the personal and noncommercial use of the document or its content, except for a
non-exclusive license to consult it on an "as is" basis, at your own risk. All other rights are reserved.
All pertinent state, regional, and local safety regulations must be observed when installing and using this
product. For reasons of safety and to help ensure compliance with documented system data, only the
manufacturer should perform repairs to components.
When devices are used for applications with technical safety requirements, the relevant instructions must
be followed.
Failure to use Schneider Electric software or approved software with our hardware products may result in
injury, harm, or improper operating results.
Failure to observe this information can result in injury or equipment damage.
© 2017 Schneider Electric. All Rights Reserved.

EAV64334 06/2017 3
Table of Contents
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About the Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety Function STO (Safe Torque Off) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Status of Safety Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Chapter 3 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Safety Function Capability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chapter 4 Certified Architectures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Process System SF - Case 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Process System SF - Case 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Process System SF - Case 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Process System SF - Case 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Process System SF - Case 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Process System SF - Case 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Process System SF - Case 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4EAV64334 06/2017

EAV64334 06/2017 5
Safety Information
Important Information
NOTICE
Read these instructions carefully, and look at the equipment to become familiar with the device before
trying to install, operate, service, or maintain it. The following special messages may appear throughout
this documentation or on the equipment to warn of potential hazards or to call attention to information that
clarifies or simplifies a procedure.
PLEASE NOTE
Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this
material.
A qualified person is one who has skills and knowledge related to the construction and operation of
electrical equipment and its installation, and has received safety training to recognize and avoid the
hazards involved.
Qualification Of Personnel
Only appropriately trained persons who are familiar with and understand the contents of this manual and
all other pertinent product documentation are authorized to work on and with this product. In addition, these
persons must have received safety training to recognize and avoid hazards involved. These persons must
have sufficient technical training, knowledge and experience and be able to foresee and detect potential
hazards that may be caused by using the product, by changing the settings and by the mechanical,
electrical and electronic equipment of the entire system in which the product is used. All persons working
on and with the product must be fully familiar with all applicable standards, directives, and accident
prevention regulations when performing such work.

6EAV64334 06/2017
Intended Use
This product is a drive for three-phase synchronous, asynchronous motors and intended for industrial use
according to this manual. The product may only be used in compliance with all applicable safety standard
and local regulations and directives, the specified requirements and the technical data. The product must
be installed outside the hazardous ATEX zone. Prior to using the product, you must perform a risk
assessment in view of the planned application. Based on the results, the appropriate safety measures must
be implemented.Since the product is used as a component in an entire system, you must ensure the safety
of persons by means of the design of this entire system (for example, machine design). Any use other than
the use explicitly permitted is prohibited and can result in hazards. Electrical equipment should be installed,
operated, serviced, and maintained only by qualified personnel.
Product Related Information
Read and understand these instructions before performing any procedure with this drive.
Drive systems may perform unexpected movements because of incorrect wiring, incorrect settings,
incorrect data or other errors.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Only appropriately trained persons who are familiar with and understand the contents of this manual
and all other pertinent product documentation and who have received safety training to recognize and
avoid hazards involved are authorized to work on and with this drive system. Installation, adjustment,
repair and maintenance must be performed by qualified personnel.
The system integrator is responsible for compliance with all local and national electrical code
requirements as well as all other applicable regulations with respect to grounding of all equipment.
Many components of the product, including the printed circuit boards, operate with mains voltage.
Only use properly rated, electrically insulated tools and measuring equipment.
Do not touch unshielded components or terminals with voltage present.
Motors can generate voltage when the shaft is rotated. Prior to performing any type of work on the
drive system, block the motor shaft to prevent rotation.
AC voltage can couple voltage to unused conductors in the motor cable. Insulate both ends of unused
conductors of the motor cable.
Do not short across the DC bus terminals or the DC bus capacitors or the braking resistor terminals.
Before performing work on the drive system:
Disconnect all power, including external control power that may be present. Take into account that
the circuit breaker or main switch does not de-energize all circuits.
Place a Do Not Turn On label on all power switches related to the drive system.
Lock all power switches in the open position.
Wait 15 minutes to allow the DC bus capacitors to discharge.
Follow the instructions given in the chapter "Verifying the Absence of Voltage" in the installation
manual of the product.
Before applying voltage to the drive system:
Verify that the work has been completed and that the entire installation cannot cause hazards.
If the mains input terminals and the motor output terminals have been grounded and short-circuited,
remove the ground and the short circuits on the mains input terminals and the motor output
terminals.
Verify proper grounding of all equipment.
Verify that all protective equipment such as covers, doors, grids is installed and/or closed.
Failure to follow these instructions will result in death or serious injury.
WARNING
UNANTICIPATED EQUIPMENT OPERATION
Carefully install the wiring in accordance with the EMC requirements.
Do not operate the product with unknown or unsuitable settings or data.
Perform a comprehensive commissioning test.
Failure to follow these instructions can result in death, serious injury, or equipment damage.

EAV64334 06/2017 7
Damaged products or accessories may cause electric shock or unanticipated equipment operation.
Contact your local Schneider Electric sales office if you detect any damage whatsoever.
(1) For USA: Additional information, refer to NEMA ICS 1.1 (latest edition), Safety Guidelines for the
Application, Installation, and Maintenance of Solid State Control and to NEMA ICS 7.1 (latest edition),
Safety Standards for Construction and Guide for Selection, Installation and Operation of Adjustable-Speed
Drive Systems.
The temperature of the products described in this manual may exceed 80 °C (176 °F) during operation.
This equipment has been designed to operate outside of any hazardous location. Only install this
equipment in zones known to be free of a hazardous atmosphere.
DANGER
ELECTRIC SHOCK OR UNANTICIPATED EQUIPMENT OPERATION
Do not use damaged products or accessories.
Failure to follow these instructions will result in death or serious injury.
WARNING
LOSS OF CONTROL
The designer of any control scheme must consider the potential failure modes of control paths and,
for critical control functions, provide a means to achieve a safe state during and after a path failure.
Examples of critical control functions are emergency stop, overtravel stop, power outage and restart.
Separate or redundant control paths must be provided for critical control functions.
System control paths may include communication links. Consideration must be given to the
implications of unanticipated transmission delays or failures of the link.
Observe all accident prevention regulations and local safety guidelines (1).
Each implementation of the product must be individually and thoroughly tested for proper operation
before being placed into service.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
NOTICE
DESTRUCTION DUE TO INCORRECT MAINS VOLTAGE
Before switching on and configuring the product, verify that it is approved for the mains voltage
Failure to follow these instructions can result in equipment damage.
WARNING
HOT SURFACES
Ensure that any contact with hot surfaces is avoided.
Do not allow flammable or heat-sensitive parts in the immediate vicinity of hot surfaces.
Verify that the product has sufficiently cooled down before handling it.
Verify that the heat dissipation is sufficient by performing a test run under maximum load conditions.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
DANGER
POTENTIAL FOR EXPLOSION
Install and use this equipment in non-hazardous locations only.
Failure to follow these instructions will result in death or serious injury.

8EAV64334 06/2017

EAV64334 06/2017 9
About the Book
At a Glance
Document Scope
The purpose of this document is to provide information about the safety function incorporated in the drive.
The drive supports the STO safety function according to the IEC 61800-5-2 standard.
Validity Note
Original instructions and information given in this manual have been written in English (before optional
translation).
This documentation is valid for the Altivar Process drives and drive systems described in the Installation
manual.
The technical characteristics of the devices described in this document also appear online. To access this
information online:
The characteristics that are presented in this manual should be the same as those characteristics that
appear online. In line with our policy of constant improvement, we may revise content over time to improve
clarity and accuracy. If you see a difference between the manual and online information, use the online
information as your reference.
Related Documents
Use your tablet or your PC to quickly access detailed and comprehensive information on all our products
on www.schneider-electric.com.
The internet site provides the information you need for products and solutions:
The whole catalog for detailed characteristics and selection guides,
The CAD files to help design your installation, available in over 20 different file formats,
All software and firmware to maintain your installation up to date,
A large quantity of White Papers, Environment documents, Application solutions, Specifications... to
gain a better understanding of our electrical systems and equipment or automation,
And finally all the User Guides related to your drive, listed below:
(Other option manuals and Instruction sheets are available on www.schneider-electric.com)
Step Action
1 Go to the Schneider Electric home page
www.schneider-electric.com .
2 In the Search box type the reference of a product or the name of a product range.
Do not include blank spaces in the reference or product range.
To get information on grouping similar modules, use asterisks ( * ).
3 If you entered a reference, go to the Product Datasheets search results and click on the reference that
interests you.
If you entered the name of a product range, go to the Product Ranges search results and click on the
product range that interests you.
4 If more than one reference appears in the Products search results, click on the reference that interests
you.
5 Depending on the size of your screen, you may need to scroll down to see the data sheet.
6 To save or print a data sheet as a .pdf file, click Download XXX product datasheet.
Title of Documentation Catalog Number
ATV600 Getting Started
EAV63253 (English), EAV63254 (French), EAV63255 (German), EAV63256
(Spanish),
EAV63257 (Italian), EAV64298 (Chinese)
ATV600 Getting Started Annex
(SCCR)
EAV64300 (English)
ATV630, ATV650 Installation
Manual
EAV64301 (English), EAV64302 (French), EAV64306 (German), EAV64307
(Spanish),
EAV64310 (Italian), EAV64317 (Chinese)
ATV600 Programming Manual
EAV64318 (English), EAV64320 (French), EAV64321 (German), EAV64322
(Spanish),
EAV64323 (Italian), EAV64324 (Chinese)

10 EAV64334 06/2017
You can download these technical publications and other technical information from our website at
http://www.schneider-electric.com/en/download
Terminology
The technical terms, terminology, and the corresponding descriptions in this manual normally use the
terms or definitions in the relevant standards.
In the area of drive systems this includes, but is not limited to, terms such as error, error message, failure,
fault, fault reset, protection, safe state, safety function, warning, warning message, and so on.
Among others, these standards include:
IEC 61800 series: Adjustable speed electrical power drive systems
IEC 61508 Ed.2 series: Functional safety of electrical/electronic/programmable electronic safety-related
EN 954-1 Safety of machinery - Safety related parts of control systems
ISO 13849-1 & 2 Safety of machinery - Safety related parts of control systems
IEC 61158 series: Industrial communication networks - Fieldbus specifications
IEC 61784 series: Industrial communication networks - Profiles
IEC 60204-1: Safety of machinery - Electrical equipment of machines – Part 1: General requirements
In addition, the term zone of operation is used in conjunction with the description of specific hazards, and
is defined as it is for a hazard zone or danger zone in the EC Machinery Directive (2006/42/EC) and in ISO
12100-1.
EC Declaration of Conformity
The EC Declaration of Conformity can be obtained on www.schneider-electric.com
ATV600 Modbus Serial Link Manual
(Embedded)
EAV64325 (English)
ATV600 Ethernet Manual
(Embedded)
EAV64327 (English)
ATV600 Ethernet IP - Modbus TCP
Manual (VW3A3720, 721)
EAV64328 (English)
ATV600 PROFIBUS DP manual
(VW3A3607)
EAV64329 (English)
ATV600 DeviceNet manual
(VW3A3609)
EAV64330 (English)
ATV600 PROFINET manual
(VW3A3627)
EAV64331 (English)
ATV600 CANopen Manual
(VW3A3608, 618, 628)
EAV64333 (English)
ATV600 Communication
Parameters
EAV64332 (English)
ATV600 Embedded Safety Function
manual
EAV64334 (English)
Altivar Process Drive Systems
Installation manual
NHA37119 (English), NHA37121 (French), NHA37118 (German), NHA37122
(Spanish),
NHA37123 (Italian), NHA37130 (Chinese), NHA37124 (Dutch),
NHA37126 (Polish), NHA37127 (Portuguese), NHA37128 (Russian),
NHA37129 (Turkish)
ATV660 Handbook
NHA37111 (English), NHA37110 (German)
ATV680 Handbook
NHA37113 (English), NHA37112 (German)
ATV600F, ATV900F Installation
Instruction sheet
NVE57369 (English)
ATV600, ATV900 ATEX manual NVE42416 (English)
SoMove: FDT
SoMove_FDT (English, French, German, Spanish, Italian, Chinese)
Altivar Process ATV600: DTM
ATV6xx_DTM_Library_EN (English), ATV6xx_DTM_Lang_FR (French),
ATV6xx_DTM_Lang_DE (German), ATV6xx_DTM_Lang_SP (Spanish),
ATV6xx_DTM_Lang_IT (Italian), ATV6xx_DTM_Lang_CN (Chinese)
Title of Documentation Catalog Number

EAV64334 06/2017 11
Certification for functional safety
The integrated safety function is compatible and certified following IEC 61800-5-2 Ed.1 Adjustable speed
electrical power drive systems – Part 5-2 : Safety requirements – Functional
IEC 61800-5-2 as a product standard, sets out safety-related considerations of Power Drive Systems
Safety Related PDS (SR) s in terms of the framework of IEC 61508 series Ed.2 of standards.
Compliance with IEC 61800-5-2 standard, for the following described safety function, will facilitate the
incorporation of a PDS(SR) (Power Drive System with safety-related functions) into a safety-related control
system using the principles of IEC 61508, 60204 or the ISO 13849-1, as well as the IEC 62061 for process-
systems and machinery.
The defined safety function is
SIL 3 capability in compliance with IEC 61800-5-2 and IEC 61508 series Ed.2
Performance Level e in compliance with ISO 13849-1
Compliant with the Category 3 of European standard ISO 13849-1
Also refer to Safety function capability
(see page 23) .
The safety demand mode of operation is considered in high demand or continuous mode of operation
according to the IEC 61800-5-2 standard.
The certificate for functional safety is accessible on www.schneider-electric.com
Contact Us
Select your country on:
www.schneider-electric.com/contact
Schneider Electric Industries SAS
Head Office
35, rue Joseph Monier
92500 Rueil-Malmaison
France

12 EAV64334 06/2017

EAV64334 06/2017 13
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EAV64334 0 6/2017
Overvi ew
Chapter 1
Overview
What Is in This Chapter?
This chapter contains the following topics:
Topic Page
Definitions 14
Basics 15

14 EAV64334 06/2017
Definitions
Safety Function In Altivar Process
The safety function incorporated in Altivar Process, helps to detect unsafe conditions of the installation and
prevent hazardous conditions arising at the installation.
In some cases, further safety-related systems external to the drive (for example a mechanical brake) may
be necessary to maintain the safe condition when electrical power is removed.
Safety integrated function provides the following benefits:
Replacement of external safety-related equipment
Reduced wiring efforts and space requirements
Reduced costs
The Altivar Process drives are compliant with normative requirements to implement the safety function.
STO (Safe Torque Off)
No power that could cause torque or force is supplied to the motor.
Notation
The graphic display terminal menus and parameters are shown in square brackets, with capital letters for
the menus and lowercase characters for the parameters.
Example: [COMMUNICATION]
Example: [Fallback speed]

EAV64334 06/2017 15
Basics
Functional Safety
Automation and safety engineering are two areas that were completely separate in the past but have
recently become more and more integrated.
The engineering and installation of complex automation solutions are greatly simplified by integrated safety
functions.
Usually, the safety engineering requirements depend on the application.
The level of requirements results from the risk and the hazard potential arising from the specific application.
IEC 61508 Standard
The standard IEC 61508 Functional safety of electrical/electronic/programmable electronic safety-related
systems covers the safety-related function.
Instead of a single component, an entire function chain (for example, from a sensor through the logical
processing units to the actuator) is considered as a unit.
This function chain must meet the requirements of the specific safety integrity level as a whole.
Systems and components that can be used in various applications for safety tasks with comparable risk
levels can be developed on this basis.
EN ISO 13849 Standard
This European Standard specifies the validation process, including both analysis and testing, for the safety
functions and categories for the safety-related parts of control systems. Descriptions of the safety functions
and the requirements for the categories are given in ISO 13849-1 which deals the general principles for
design. Some requirements for validation are general and some are specific to the technology used. EN
ISO 13849-2 also specifies the conditions under which the validation by testing of the safety-related parts
of control systems should be carried out.
SIL - Safety Integrity Level
The standard IEC 61508 defines 4 safety integrity levels (SIL) for safety functions.
SIL1 is the lowest level and SIL4 is the highest level.
A hazard and risk analysis serves as a basis for determining the required safety integrity level.
This is used to decide whether the relevant function chain is to be considered as a safety function and
which hazard potential it must cover.
PFH - Probability of a Dangerous Hardware Failure Per Hour
To maintain the safety function, the IEC 61508 standard requires various levels of measures for avoiding
and controlling detected errors, depending on the required SIL.
All components of a safety function must be subjected to a probability assessment to evaluate the
effectiveness of the measures implemented for controlling detected faults.
This assessment determined the PFH (Probability of a dangerous Failure per Hour) for a safety system.
This is the probability per hour that a safety system fails in a hazardous manner and the safety function
cannot be correctly executed.
Depending on the SIL, the PFH must not exceed certain values for the entire safety system.
The individual PFH values of a function chain are added. The result must not exceed the maximum value
specified in the standard.
Safety
Integrity Level
Probability of a dangerous Failure per Hour (PFH) at high demand or
continuous demand
410-9≤...< 10-8
310-8≤...< 10-7
210-7≤...< 10-6
110-6≤...< 10-5

16 EAV64334 06/2017
PL - Performance Level
The standard IEC 13849-1 defines 5 Performance levels (PL) for safety functions.
Level a is the lowest level and e is the highest level.
Five levels (a, b, c, d, and e) correspond to different values of average probability of dangerous failure per
hour.
HFT - Hardware Fault Tolerance and SFF - Safe Failure Fraction
Depending on the SIL for the safety system, the IEC 61508 standard requires a specific hardware fault
tolerance HFT in connection with a specific proportion of safe failures SFF (Safe Failure Fraction).
The hardware fault tolerance is the ability of a system to execute the required safety function in spite of the
presence of one or more hardware faults.
The SFF of a system is defined as the ratio of the rate of safe failures to the total failure rate of the system.
According to IEC 61508, the maximum achievable SIL of a system is partly determined by the hardware
fault tolerance HFT and the safe failure fraction SFF of the system.
IEC 61508 distinguishes two types of subsystem (type A subsystem, type B subsystem).
These types are specified on the basis of criteria which the standard defines for the safety-relevant
components.
Fault Avoidance Measures
Systematic errors in the specifications, in the hardware and the software, usage faults and maintenance
faults in the safety system must be avoided to the maximum degree possible. To meet these requirements,
IEC 61508 specifies a number of measures for fault avoidance that must be implemented depending on
the required SIL. These measures for fault avoidance must cover the entire life cycle of the safety system,
i.e. from design to decommissioning of the system.
Performance
level
Probability of a dangerous Hardware Failure per Hour
e10-8≤...< 10-7
d10-7≤...< 10-6
c10-6≤...< 3 x 10-6
b3 x 10-6≤...< 10-5
a10-5≤...< 10-4
SFF HFT type A subsystem HFT type B subsystem
012012
< 60% SIL1 SIL2 SIL3 — SIL1 SIL2
60% <... < 90% SIL2 SIL3 SIL4 SIL1 SIL2 SIL3
90% <... < 99 % SIL3 SIL4 SIL4 SIL2 SIL3 SIL4
> 99% SIL3 SIL4 SIL4 SIL3 SIL4 SIL4

EAV64334 06/2017 17
A
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EAV64334 0 6/2017
Description
Chapter 2
Description
What Is in This Chapter?
This chapter contains the following topics:
Topic Page
Safety Function STO (Safe Torque Off) 18
Limitations 19
Status of Safety Function 20

18 EAV64334 06/2017
Safety Function STO (Safe Torque Off)
Overview
This function brings the machine safely into a no-torque state and / or prevents it from starting accidentally.
The safe torque-off (safety function STO) function can be used to effectively implement the prevention of
unexpected start-up functionality, thus making stops safe by preventing the power only to the motor, while
still maintaining power to the main drive control circuits. The principles and requirements of the prevention
of unexpected start-up are described in the standard EN 1037:1995+A1.
The logic inputs (STOA and STOB) are always assigned to this function.
The safety function STO status can be displayed using the HMI of the drive or using the commissioning
software.
(1) Motor speed - (2) Actual speed - (3) STOA and STOB - STO Activation - (4) Time
NOTE: If delay between STOA and STOB is greater than 1 s, the safety function STO is triggered and an
error is triggered with the error code [Safety Function Error] SAFF.
Safety Function STO Standard Reference
The safety function STO is defined in section 4.2.2.2 of standard IEC 61800-5-2 (edition 1.0 2007.07):
Power that can cause rotation (or motion in the case of a linear motor), is not applied to the motor.The
PDS(SR) (power drive system suitable for use in safety-related applications) will not provide energy to the
motor which can generate torque (or force in the case of a linear motor).
NOTE 1: This safety function corresponds to an uncontrolled stop in accordance with stop category 0
of IEC 60204-1.
NOTE 2: This safety function may be used where power removal is required to prevent an unexpected
start-up.
NOTE 3: In circumstances where external influences (for example, falling of suspended loads) are
present, additional measures (for example, mechanical brakes) may be necessary to prevent any
hazard.
NOTE 4: Electronic equipment and contactors do not provide adequate protection against electric
shock, and additional insulation measures may be necessary.
DANGER
ELECTRIC SHOCK CAUSED BY INCORRECT USE
The safety function STO (Safe Torque Off) does not cause electric isolation. The DC bus voltage is still
present.
Turn off the mains voltage using appropriate switch to achieve a voltage-free condition.
Failure to follow these instructions will result in death or serious injury.

EAV64334 06/2017 19
Safety Function (SF) Level Capability for Safety Function STO
Emergency Operations
Standard IEC 60204-1 introduces 2 emergency operations:
Emergency switching-off:
This function requires external switching components, and cannot be accomplished with drive based
functions such as safe torque-off (STO).
Emergency stop:
An emergency stop must operate in such a way that, when it is activated, the hazardous movement of
the machinery is stopped and the machine is unable to start under any circumstances, even after the
emergency stop is released.
An emergency stop shall function either as a stop category 0 or as a stop category 1.
Stop category 0 means that the power to the motor is turned off immediately. Stop category 0 is
equivalent to the safe torque-off (STO) function, as defined by standard EN 61800-5-2.
In addition to the requirements for stop (see 9.2.5.3 of IEC 60204-1), the emergency stop function has
the following requirements:
It shall override all other functions and operations in all modes.
This reset shall be possible only by a manual action at that location where the command has been
initiated. The reset of the command shall not restart the machinery but only permit restarting.
For the machine environment (IEC 60204-1 and machinery directive), when safety function STO is
used to manage an emergency stop category 0, the motor must not restart automatically when safety
function STO has been triggered and deactivated (with or without a power cycle).
If the drive configuration enable automatic machine restart after the safety function STO has been
deactivated, an additional safety module (such as Preventa module) is required.
If the use of an additional safety module is not possible, the drive control must be configured in 2
wires transition (tCC =2C and tCt =trn) or 3 wires (tCC =3C).
Limitations
Type Of Motor
The safety function STO can be used with all motors supported by the drive.
Prerequisites for Using Safety Functions
Following conditions have to be fulfilled for correct operation:
The motor size is adequate for the application and is not at the limit of its capacity.
The drive size has been correctly chosen for the supply mains, sequence, motor, and application and
is not at the limit of its capacity as stated in the catalog.
If required, the appropriate options are used.
Example: output filter.
The drive is correctly set up with the correct speed loop and torque characteristics for the application;
the reference frequency profile applied to the drive control loop is followed.
Disable Error Detection
When the safety function is used, the error code [Safety Function Error] SAFF cannot be disabled by the
function [Disable Error Detection] InH.
Configuration SIL
Safety Integrity Level according
to IEC 61-508
PL
Performance Level according
to ISO-13849
STO with and without Safety module
(such as Preventa module)
SIL3 PLe

20 EAV64334 06/2017
Status of Safety Function
Description
If... Then ...
Safe Torque Off (STO) is not active the orange LED is OFF
STO is triggered the power bridge is locked by redundant hardware
the orange LED is steady ON
STO is displayed
[Safety Function Error] SAFF
detected fault occurs (1)
the power bridge is locked
the orange LED is steady ON
the red LED is steady ON
the Graphic Display terminal displays StO then SAFF
(1) Possible causes are exceeded delay between STOA and STOB signals > 1 s and internal hardware detected error.