SEW-Eurodrive MOVISAFE DCS B Series User manual

Drive Technology \ Drive Automation \ System Integration \ Services
Manual
MOVIDRIVE
®
MDX61B
Safety Module MOVISAFE
®
DCS..B Option
Edition 04/2012 19263228 / EN

SEW-EURODRIVE—Driving the world

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 3
Contents
Contents
1 General Information ............................................................................................ 8
1.1 How to use this documentation................................................................... 8
1.2 Structure of the safety notes ....................................................................... 8
1.2.1 Meaning of signal words.............................................................. 8
1.2.2 Structure of the section safety notes ........................................... 8
1.2.3 Structure of the embedded safety notes...................................... 8
1.3 Right to claim under warranty ..................................................................... 9
1.4 Exclusion of liability..................................................................................... 9
1.5 Copyright..................................................................................................... 9
1.6 Product names and trademarks.................................................................. 9
1.7 Other applicable documentation ................................................................. 9
2 Safety Notes ...................................................................................................... 11
2.1 General information .................................................................................. 11
2.2 Target group ............................................................................................. 11
2.3 Designated use ......................................................................................... 12
2.4 Transportation, storage............................................................................. 12
2.5 Installation................................................................................................. 12
2.6 Electrical connection ................................................................................. 13
2.7 Operation .................................................................................................. 13
2.8 Definitions ................................................................................................. 13
3 Integrated Safety Technology.......................................................................... 14
3.1 Safety architecture of the DCS..B option .................................................. 14
3.2 Safety functions ........................................................................................ 16
3.2.1 STO – Safe Torque Off.............................................................. 17
3.2.2 SS1(b) – Safe Stop 1................................................................. 18
3.2.3 SS1(c) – Safe Stop 1................................................................. 19
3.2.4 SS2(b) – Safe Stop 2................................................................. 20
3.2.5 SS2(c) – Safe Stop 2................................................................. 21
3.2.6 SOS – Safe Operating Stop....................................................... 22
3.2.7 SLA – Safely Limited Acceleration............................................. 23
3.2.8 SAR – Safe Acceleration Range................................................ 24
3.2.9 SLS – Safely Limited Speed ...................................................... 25
3.2.10 SSR – Safe Speed Range......................................................... 26
3.2.11 SDI – Safe Direction .................................................................. 27
3.2.12 SLI – Safely Limited Increment.................................................. 28
3.2.13 SLP – Safely Limited Position.................................................... 29
3.2.14 SCA – Safe Cam ....................................................................... 30
3.2.15 SBC – Safe Brake Control ......................................................... 31
3.3 Restrictions ............................................................................................... 32

4Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
Contents
4 Unit Structure .................................................................................................... 33
4.1 Unit features and type designations.......................................................... 33
4.1.1 DCS21B..................................................................................... 33
4.1.2 DCS31B..................................................................................... 33
4.2 Nameplates............................................................................................... 34
4.2.1 1st nameplate: DCS..B .............................................................. 34
4.2.2 2nd nameplate: MOVIDRIVE®B ............................................... 34
4.3 Unit structure of DCS21B.......................................................................... 35
4.4 Unit structure of DCS31B.......................................................................... 36
5 Installation ......................................................................................................... 37
5.1 General installation notes ......................................................................... 37
5.2 Notes for use in MOVIDRIVE®B .............................................................. 37
5.3 Notes for using DH..B controllers.............................................................. 37
5.4 Installing the option MOVISAFE®DCS..B ................................................ 38
5.4.1 Before you start ......................................................................... 39
5.4.2 Basic procedure for installing/removing an option
(MDX61B, sizes 1 – 7)............................................................... 40
5.5 Connection and terminal description of the DCS..B option....................... 41
5.5.1 Part numbers ............................................................................. 41
5.5.2 Terminal description .................................................................. 42
5.6 Measures for electromagnetic compatibility (EMC) .................................. 43
5.6.1 Equipotential bonding ................................................................ 44
5.7 External DC 24 V supply........................................................................... 45
5.8 Connecting binary inputs DI1 to DI8 ......................................................... 46
5.8.1 Using pulse outputs ................................................................... 49
5.8.2 Single-channel sensor, not monitored ....................................... 50
5.8.3 Single-channel sensor, monitored ............................................. 51
5.8.4 Dual-channel sensor, not monitored.......................................... 52
5.8.5 Dual-channel sensor, monitored................................................ 53
5.9 Connecting binary outputs ........................................................................ 54
5.9.1 Single-pole switching binary output not monitored .................... 58
5.9.2 Dual-channel switching binary output, monitored ...................... 60
5.9.3 Using binary outputs for switching safe stop of
MOVIDRIVE®B ......................................................................... 62
5.10 Connecting the position and velocity sensors........................................... 63
5.10.1 Before you start ......................................................................... 63
5.10.2 General installation notes for encoders ..................................... 65
5.10.3 Combination of various encoder types ...................................... 65
5.10.4 Technical requirements on suitable encoder types ................... 67

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 5
Contents
5.11 Connection options of an encoder system................................................ 68
5.11.1 Encoder signal split boxes ......................................................... 69
5.11.2 Connection cables for encoder signal split boxes...................... 70
5.11.3 Cable sets for encoder signal split boxes .................................. 71
5.11.4 Split cables and adapter cables................................................. 72
5.11.5 Split cables for MOVISAFE®DCS..B
with serial number ≥1500........................................................... 73
5.11.6 Split cables for MOVISAFE®DCS..B
with serial number ≤1499........................................................... 73
6 Startup................................................................................................................ 74
6.1 General information on startup ................................................................. 74
6.1.1 Prerequisites.............................................................................. 74
6.1.2 Startup steps for DCS21B ......................................................... 74
6.1.3 Startup steps for DCS31B ......................................................... 75
6.2 Parameter descriptions of parameter group P55x in MOVIDRIVE®B...... 76
6.2.1 P550 DCS safety module status................................................ 76
6.2.2 P551 Binary inputs DCS DI1 – DI8............................................ 76
6.2.3 P552 Binary outputs DCS DO0_P – DO2_M............................. 76
6.2.4 P553 DCS serial number........................................................... 77
6.2.5 P554 CRC DCS......................................................................... 77
6.2.6 P555 Error response DCS / P556 Alarm response DCS........... 77
6.2.7 P557 DCS actual position source.............................................. 77
6.3 Other parameters...................................................................................... 77
6.3.1 P350/351 Direction of rotation reversal 1/2 ............................... 77
6.3.2 P890 Protocol SBus 2................................................................ 78
6.3.3 P894 Baud rate SBus 2 ............................................................. 78
6.3.4 P951 Counting direction ............................................................ 78
6.3.5 P952 Clock rate ......................................................................... 78
6.4 Communication and establishing a connection......................................... 78
6.5 Operating states........................................................................................ 79
6.6 Configuring the measuring sections.......................................................... 79
6.6.1 Conversion example.................................................................. 85
6.7 Fieldbus connection via PROFIsafe.......................................................... 89
6.7.1 Diagnostics of the PROFIsafe communication status................ 89
6.7.2 Setting the PROFIsafe address in the DCS21B option ............. 91
6.7.3 Scaling the position values in the DCS21B option..................... 92
6.7.4 PROFIsafe process image......................................................... 93
7 Validation ........................................................................................................... 96
7.1 Procedure ................................................................................................. 96
7.2 Configuration report for validation............................................................. 96
7.2.1 Structure of the configuration report .......................................... 96
7.2.2 Creating the configuration report ............................................... 96
7.2.3 Entries in the configuration report.............................................. 97
7.3 Determining/checking the response times for validation........................... 98
7.4 Checking the performance level according to EN ISO 13849-1 ............. 100

6Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
Contents
8 Maintenance .................................................................................................... 101
8.1 Modification/changes to the unit ............................................................. 101
8.2 Disposal .................................................................................................. 101
8.3 MOVIDRIVE®B unit replacement........................................................... 102
8.3.1 Replacing the inverter.............................................................. 102
8.3.2 Replacing the DCS..B option ................................................... 102
8.3.3 Replacing the battery of option DCS..B................................... 103
8.3.4 Replacing an SSI absolute encoder ........................................ 104
9 Diagnostics...................................................................................................... 107
9.1 Meaning of the status LED...................................................................... 107
9.1.1 Indication of the operating state............................................... 107
9.2 Error and alarm messages...................................................................... 108
9.2.1 List of error messages ............................................................. 109
9.2.2 List of alarm messages............................................................ 118
9.2.3 List of ECS messages ............................................................. 125
10 Technical Data................................................................................................. 129
10.1 General technical data ............................................................................ 129
10.2 Characteristic safety values of MOVISAFE®DCS21B ........................... 129
10.3 Characteristic safety values of MOVISAFE®DCS31B ........................... 130
10.4 Plug connector ........................................................................................ 130
10.4.1 Pin assignment X80................................................................. 130
10.4.2 Pin assignment X81................................................................. 131
10.4.3 Pin assignment X82................................................................. 131
10.4.4 Pin assignment X83................................................................. 131
10.4.5 Pin assignment X84/X85 ......................................................... 132
10.4.6 Pin assignment X86................................................................. 133
10.4.7 Pin assignment X87................................................................. 133
11 Declaration of Conformity .............................................................................. 134
11.1 Declaration of comformity for MOVIDRIVE®B with DCS..B option ........ 134
12 Appendix.......................................................................................................... 135
12.1 Comparison of safety functions............................................................... 135
12.2 Description of input elements.................................................................. 135
12.2.1 General information ................................................................. 135
12.2.2 Operating mode switch............................................................ 135
12.2.3 Light curtain ............................................................................. 136
12.2.4 Emergency switch-off .............................................................. 136
12.2.5 Start/reset ................................................................................ 136
12.2.6 Sensor ..................................................................................... 136
12.2.7 Door monitoring ....................................................................... 137
12.2.8 Confirmation button ................................................................. 137
12.3 Encoder combinations ............................................................................ 138

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 7
Contents
12.4 Technical data of SEW encoders............................................................ 138
12.4.1 TTL incremental encoders....................................................... 138
12.4.2 SIN/COS encoder.................................................................... 139
12.4.3 Combination encoders Hiperface®and SIN/COS ................... 139
12.4.4 Combination encoders RS485 and SIN/COS .......................... 139
12.4.5 Combination encoder SSI and SIN/COS................................. 139
12.4.6 Encoder values of MOVIDRIVE®B via backplane bus ........... 140
12.5 Diagnostic values.................................................................................... 140
12.5.1 Binary inputs............................................................................ 140
12.5.2 Binary outputs.......................................................................... 141
12.5.3 Encoder interface..................................................................... 142
12.6 Typical response times ........................................................................... 144
12.6.1 Typical response times of the DCS21B option ........................ 144
12.6.2 Typical response times of the DCS31B option ........................ 146
12.6.3 Calculating the response time of DCS..B
with overspeed distance monitoring ........................................ 147
12.7 Instruction list commands of the DCS31B option.................................... 149
12.8 Abbreviations used ................................................................................. 150
Index................................................................................................................. 151

8Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
1How to use this documentation
General Information
MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
1 General Information
1.1 How to use this documentation
The documentation is an integral part of the product and contains important information
on operation and service. Programming and parameterization is described in the online
help of the MOVISAFE®Config software. The documentation is written for all employees
who assemble, install, start up, and service this product.
The documentation must be accessible and legible. Make sure that persons responsible
for the system and its operation as well as persons who work independently with the
software and the connected units, have read through the documentation carefully and
understood it. If you are unclear about any of the information in this documentation, or
if you require further information, contact SEW-EURODRIVE.
1.2 Structure of the safety notes
1.2.1 Meaning of signal words
The following table shows the grading and meaning of the signal words for safety notes,
notes on potential risks of damage to property, and other notes.
1.2.2 Structure of the section safety notes
Section safety notes do not apply to a specific action but to several actions pertaining to
one subject. The symbols used either indicate a general hazard or a specific hazard.
This is the formal structure of a section safety note:
1.2.3 Structure of the embedded safety notes
Embedded safety notes are directly integrated in the instructions just before the descrip-
tion of the dangerous action.
This is the formal structure of an embedded safety note:
•SIGNAL WORD Type and source of danger.
Possible consequence(s) if disregarded.
– Measure(s) to prevent the danger.
Signal word Meaning Consequences if disregarded
DANGER Imminent danger Severe or fatal injuries
WARNING Possible dangerous situation Severe or fatal injuries
CAUTION Possible dangerous situation Minor injuries
NOTICE Possible damage to property Damage to the drive system or its
environment
INFORMATION Useful information or tip: Simplifies the
handling of the drive system.
SIGNAL WORD
Type and source of danger.
Possible consequence(s) if disregarded.
• Measure(s) to prevent the danger.

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 9
1
Right to claim under warranty
General Information
1.3 Right to claim under warranty
A requirement of fault-free operation and fulfillment of any rights to claim under limited
warranty is that you adhere to the information in the documentation at hand. Therefore,
read the documentation before you start working with the software and the connected
devices from SEW-EURODRIVE.
Make sure that the documentation is available to persons responsible for the machinery
and its operation as well as to persons who work independently on the devices. Also
ensure that the documentation is legible.
1.4 Exclusion of liability
You must adhere to this documentation and the documentation of the connected
devices from SEW-EURODRIVE to ensure safe operation and to achieve the specified
product characteristics and performance features.
SEW-EURODRIVE assumes no liability for injury to persons or damage to equipment or
property resulting from non-observance of the documentation. In such cases, any liabil-
ity for defects is excluded.
1.5 Copyright
© 2008 - SEW-EURODRIVE. All rights reserved.
Copyright law prohibits the unauthorized duplication, modification, distribution, and use
of this document, in whole or in part.
1.6 Product names and trademarks
All product names in this documentation are trademarks or registered trademarks of
their respective titleholders.
1.7 Other applicable documentation
Observe the following applicable documents:
–"MOVIDRIVE
®MDX60B/61B" operating instructions
–"MOVIDRIVE
®MDX61B Fieldbus Interface DFS12B PROFIBUS DP-V1 with
PROFIsafe" manual
–"MOVIDRIVE
®MDX61B Fieldbus Interface DFS22B PROFINET IO with PROFIsafe"
manual
– "Manual Encoder Signal Split Box DAE70B/71B" manual
– Online help of the MOVISAFE®Config DCS software
– Online help of the MOVISAFE®Assist software
– Configuration report of the MOVISAFE®Assist/Config software. Is used as accep-
tance protocol during validation.
– Certificate and characteristic safety values for the MOVISAFE®DCS..B safety
module option.

10 Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
1Other applicable documentation
General Information
Make sure you always use the latest documentation and software version.
Our documentation is available in various languages for download from the SEW
homepage (www.sew-eurodrive.com). If you are unclear about any of the information in
this documentation or if you require further information, consult SEW-EURODRIVE.
If required, you can order printed copies of the documentation from SEW-EURODRIVE.

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 11
2
General information
Safety Notes
2 Safety Notes
The following basic safety notes must be read carefully to prevent injury to persons and
damage to property. The operator must ensure that the basic safety notes are read and
observed. Make sure that persons responsible for the plant and its operation, as well as
persons who work independently on the unit, have read through the operating
instructions carefully and understood them. If you are unclear about any of the informa-
tion in this documentation, or if you require further information, please contact SEW-
EURODRIVE.
2.1 General information
Never install or start up damaged products. Submit a complaint to the shipping company
immediately in the event of damage.
During operation, drive inverters can have live, bare and movable or rotating parts as
well as hot surfaces, depending on their degree of protection.
Removing covers without authorization, improper use as well as incorrect installation or
operation may result in severe injuries to persons or damage to property.
Refer to the documentation for additional information.
2.2 Target group
Only qualified personnel are authorized to install, start up, repair or service the units
(observe IEC 60364 or CENELEC HD 384 or DIN VDE 0100 and IEC 60664 or DIN VDE
0110 as well as national accident prevention guidelines).
Qualified personnel in the context of these basic safety notes are all persons familiar
with installation, assembly, startup, programming, parameterization and operation of the
product who possess the necessary qualifications. In addition to that, they must be
familiar with the relevant safety regulations and laws, especially with the requirements
of EN ISO 13849-1 and all other standards, directives and laws specified in this docu-
mentation. The persons mentioned must have the authorization expressly issued by the
company, to operate, program, configure, label and ground units, systems and circuits
in accordance with the standards of safety technology.
Any activities regarding transportation, storage, operation, and disposal must be carried
out by persons who have been instructed appropriately.

12 Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
2Designated use
Safety Notes
2.3 Designated use
The MOVISAFE®DCS21B option in combination with the DFS12B/22B option and the
MOVISAFE®DCS31B option are designed for installation in MOVIDRIVE®MDX61B
inverter sizes 1 to 7.
When installed in machines, startup of the MOVISAFE®DCS..B option (i.e. start of
designated operation) is prohibited until it is determined that the machine complies with
the local laws and directives. In the individual area of application, you must especially
observe the Machinery Directive 2006/42/EC as well as the EMC Directive
2004/108/EC. The EMC test specifications EN 61000-4-2, EN 61000-4-3, EN 61000-4-
4, EN 61000-4-6 and EN 61000-6-2 form the basis for this. EN 60204-1 must also be
observed.
You must observe the technical data and information on the connection requirements
as provided on the nameplate and in the documentation.
2.4 Transportation, storage
Observe the notes on transportation, storage and proper handling. Observe the climatic
conditions as stated in the section "General technical data".
2.5 Installation
The units must be installed and cooled according to the regulations and specifications
in the corresponding documentation.
Protect the MOVISAFE®DCS..B option from improper strain. Ensure that components
are not deformed and/or insulation spaces are maintained, particularly during transpor-
tation. Avoid contact with electronic components and contacts.
The MOVISAFE®DCS..B option contains components that can easily be damaged by
electrostatic energy and improper handling. Prevent mechanical damage or destruction
of electric components (may pose health risk).
The following applications are prohibited unless explicitly permitted:
• Use in potentially explosive atmospheres.
• Use in areas exposed to harmful oils, acids, gases, vapors, dust, radiation, etc.
• Use in non-stationary applications.

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 13
2
Electrical connection
Safety Notes
2.6 Electrical connection
Observe the applicable national accident prevention guidelines when working on live
MOVISAFE®DCS..B options (e.g. BGV A3).
Perform electrical installation according to the pertinent regulations (e.g. cable cross
sections, fusing, protective conductor connection). For any additional information, refer
to the applicable documentation.
You find notes on EMC compliant installation, such as shielding, grounding, arrange-
ment of filters and routing of lines, in the documentation of the safety module. The man-
ufacturer of the system or machine is responsible for maintaining the limits established
by EMC legislation.
Preventive measures and protection devices must correspond to the regulations in force
(e.g. EN 60204-1).
2.7 Operation
Systems into which MOVIDRIVE®MDX61 with MOVISAFE®DCS..B option is installed
must be equipped with additional monitoring and protection devices, if necessary,
according to the applicable safety regulations; e.g. the law governing technical equip-
ment, accident prevention regulations, etc.
Keep all covers and doors closed during operation.
The fact that the status LED and other display elements are no longer illuminated does
not indicate that the unit has been disconnected from the supply system and no longer
carries any voltage.
Mechanical blocking or internal safety functions of the unit can cause a motor standstill.
Eliminating the cause of the problem or performing a reset may result in the drive re-
starting automatically. If this is not permitted for the driven machine for safety reasons,
disconnect the unit from the supply system before correcting the error.
2.8 Definitions
• The designation DCS..B is used as a generic term for all derivatives of the
MOVISAFE®product series. If a particular design variant is referred to in the manual,
the complete designation is used.
• The term "safe" used in this manual refers to the classification as a safe function
according to EN ISO 13849-1.
• PROFIsafe is a technology standard for a safe fieldbus system.
• The "MOVISAFE®Assist" software is a parameterization interface for the
MOVISAFE®DCS21B option.
• The "MOVISAFE®Config" software is a programming interface for the MOVISAFE®
DCS31B option.

14 Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
3Safety architecture of the DCS..B option
Integrated Safety Technology
3 Integrated Safety Technology
The safety technology of the MOVISAFE®DCS..B option described below meets the
following safety requirements:
• Performance level e according to EN ISO 13849-1.
• SIL 3 according to IEC 61508
3.1 Safety architecture of the DCS..B option
The internal structure of the DCS..B option consists of two separate channels with
mutual comparison of results. High-quality diagnostic mechanisms for fault detection are
executed in both channels.
The structure corresponds to the architecture and operating principle of category 4
according to EN ISO 13849-1.
The means the overall architecture has the following structure:
Double reading of every input and diagnostics by cross comparison.
The specific safety technology characteristics of the respective component (sensor,
actuator) are listed in the respective technical data chapters. To assess the overall
system in terms of safety, you can use the characteristic safety values specified in the
"Technical Data" chapter for the subsystem DCS..B (PES).
INFORMATION
This product was certified by TÜV. Copies of the TÜV certificate are available from
SEW-EURODRIVE.
2405111435
PES = Programmable electronic system
IA= Input channel A
IB= Input channel B
LA= Logic channel A
LB= Logic channel B
OA= Output channel A
OB= Output channel B
c = Cross comparison
m = Monitoring
2408400907
I
A
O
A
L
A
I
B
O
B
L
B
c
PES
m
m
Sensor Logistics Actuator
P
i
f
kVA
Hz
n

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 15
3
Safety architecture of the DCS..B option
Integrated Safety Technology
The examples shown in this manual and their characteristic architecture are decisive for
the assignment to a category according to EN ISO 13849-1. The resulting maximally
possible performance levels according to EN ISO 13849-1 depend on the following
factors of the external components:
• Structure (simple or redundant)
• Measures against common cause failure (CCF)
• Diagnostics coverage (DCavg)
• Mean time to failure of a channel (MTTFd)
INFORMATION
• When using several sensors with different functions (e.g. position indicator access
door + velocity detection) for a safety function (e.g. safety reduced speed when the
access door is open), then these sensors have to be regarded as series connection
in the safety-related assessment of the overall system. See also BGIA report
02/2008 "Functional Safety of Machine Controls – Application of EN ISO 13849".
• For fault exclusions, refer to the tables under D in the appendix of EN ISO 13849-2.
P
i
f
kVA
Hz
n

16 Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
3Safety functions
Integrated Safety Technology
3.2 Safety functions
This chapter describes the safety functions according to DIN EN 61800-5-2. Some
safety functions in the MOVISAFE®DCS..B modules have further functionalities that
exceed the definitions stipulated in the standard. In addition, further safety functions are
available on the basis of the standard. These include, for example,
• functions for drive systems prone to slip,
• functions for reading the contacts of external switching devices and
• for the safe control of a brake system.
The MOVISAFE®Config software selects safety functions based on the configuration,
the basic module used, and the encoder or combination of encoders. The safety func-
tions can be configured and parameterized in the logic as required.
The following table gives an overview of the maximum number of safety functions with
reference to the respective safety module.
Designation of the safety function Maximum number of the safety function
according to
EN 61800-5-2
with option DCS..B DCS21B DCS31B
ECS ECS 1 1
EMU EMU 2 2
PDM PDM 1 1
SAR - Implementation possible using SCA
SBC - Implementation using safe output
SCA PSC 7 16
SDI DMC 1 1
SEL ELC 1 1
SLA - Integrated in SEL, SLP, SCA, SSX, SLS, SOS
SLI JSS 1 1
SLP OLC 1 1
SLS MSC 4 4
SOS ZSC 1 1
SS1(c) - Implementation using timer and safe output
SS2(c) - Requires SOS
SSR - Implementation possible using SCA
SSX1)
1) The safety function SSX can be configured as SS1(b) or SS2(b)
-1 2
STO - Implementation using safe output
P
i
f
kVA
Hz
n

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 17
3
Safety functions
Integrated Safety Technology
3.2.1 STO – Safe Torque Off
When the STO function is activated, the drive inverter no longer supplies power to the
motor. As a result, the drive cannot generate torque. This safety function corresponds
to a non-controlled stop according to EN 60204-1, stop category 0.
1970872331
Safety function trips
v=Velocity
t=Time
t1= Point of time when STO is triggered
INFORMATION
The STO function does not monitor the stopping of the drive.
Controlled standstill is preferred, if possible.
P
i
f
kVA
Hz
n

18 Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
3Safety functions
Integrated Safety Technology
3.2.2 SS1(b) – Safe Stop 1
When the SS1(b) function is active, the inverter brings the motor to a standstill electri-
cally. The deceleration is monitored. The STO safety function is triggered when the
monitored deceleration is exceeded or when standstill is reached.
This safety function corresponds to a controlled stop of the drive according to EN 60204-
1, stop category 1.
1970875019
Safety function monitors
Safety function trips
v=Velocity
t=Time
t1= Point of time when SS1(b) is activated and motor deceleration is triggered
t2= Point of time when STO is triggered
V
t
t1t2
P
i
f
kVA
Hz
n

Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option 19
3
Safety functions
Integrated Safety Technology
3.2.3 SS1(c) – Safe Stop 1
When the SS1(c) function is active, the inverter brings the motor to a standstill electri-
cally. The STO safety function will be triggered after a specified, safety-relevant time.
This safety function corresponds to a controlled stop of the drive according to EN 60204-
1, stop category 1.
1970877451
Safety function monitors
Safety function trips
v=Velocity
t=Time
t1= Point of time when SS1(c) is activated and motor deceleration is triggered
t2= Point of time when STO is triggered
∆t = Safety-related period of time
INFORMATION
• The SS1(c) function does not monitor the stopping of the drive.
• The safety-relevant period of time ∆t allows the drive to come to a stop. In the event
of a fault, the drive does not come to a stop. It will not be de-energized until the time
t2(STO).
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20 Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
3Safety functions
Integrated Safety Technology
3.2.4 SS2(b) – Safe Stop 2
When the SS2(b) function is active, the inverter brings the motor to a standstill electri-
cally. The position must be safely monitored after standstill (SOS function according to
EN 61800-5-2). The STO safety function will be triggered if the deceleration value until
standstill is exceeded or if there is a movement at standstill. STO means that standstill
has to be ensured by a mechanical brake.
This safety function corresponds to a controlled stop of the drive according to EN 60204-
1, stop category 2.
1970957067
Safety function monitors
Safety function trips
v=Velocity
t=Time
t1= Point of time when SS2(b) is activated and motor deceleration is triggered
t2= Point of time when SOS is triggered
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