Danfoss VACON OPTEA User manual

Operating Guide
VACON® NXP Advanced Safety Options
OPTBL, OPTBM, OPTBN
drives.danfoss.com

1
1.1
1.2
1.3
1.4
1.5
1.6
2
2.1
2.2
2.3
2.4
3
3.1
3.2
3.3
3.4
3.5
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
3.6
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
3.6.7
3.6.8
Contents
Introduction 9
Purpose of the Manual 9
Additional Resources 9
Manual and Software Version 10
Approvals and Certificates 12
Product Overview 15
Terms and Abbreviations 16
Safety 19
Safety Symbols 19
Danger and Warnings 19
Cautions and Notices 20
Grounding 22
Overview of the System 24
Using the Advanced Safety Options 24
The Safe State 24
Integration and Interfaces to Other Systems 25
Determining the Achieved Safety Level 25
Advanced Safety Option Variants 27
General Information 27
Input Configuration 27
Output Configuration 28
Option Board OPTBL 30
Option Board OPTBM 31
Option Board OPTBN 32
Closed-loop Control with OPTBM 33
Closed-loop Control with OPTBN 33
Speed Measurement 33
Safety Speed Sensors 33
Standard Speed Sensors and Combinations 33
Speed Discrepancy with Multiple Speed Sources 35
Encoders 35
Proximity sensors 38
Encoder Signal Verification 39
Usage of Only One Speed Sensor 39
Estimated Speed 40
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Contents
VACON® NXP Advanced Safety Options
Operating Guide

3.6.9
3.6.10
3.7
3.7.1
3.7.2
3.8
3.8.1
3.8.2
3.8.3
3.8.4
4
4.1
4.2
5
5.1
5.2
5.3
5.4
5.5
5.6
5.6.1
5.6.2
6
6.1
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.5.1
6.1.5.2
6.1.6
6.1.7
6.2
6.2.1
6.2.2
Estimated Speed and Gear Systems 42
Estimated Speed and External Accelerative Forces 43
Storage of Parameters 43
Storing a Parameter File Backup 44
Restoring a Parameter File from Backup 44
Advanced Safety Options with the NXP Drive 44
Requirements 44
Compatibility with Drive Applications 45
Option Board Menu on the Control Panel 45
Fault Types 49
Installation 51
Installation Safety 51
Installing the Option Board 51
VACON Safe Tool 53
Functions of the VACON Safe Tool 53
The Parameter File 53
User Levels and Password Management 53
Setting the Parameters 54
Saving a Verified Parameter File to the Option Board 56
Online Monitoring 56
Viewing the State of the Option Board 56
Activity Log 56
Safety Functions 57
General Information 57
The Different Safety Functions 57
Safety Function States 57
Activation of a Safety Function 58
Violation of a Safety Function 58
Acknowledgment of a Safety Function 59
Acknowledgment of a Safety Function 59
Start-up Acknowledgment 63
Reset of a Safety Function 63
Ramps 64
Safe Stopping Functions 66
Introduction to the Safe Stopping Functions 66
STO - Safe Torque Off and SBC - Safe Brake Control 67
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Contents
VACON® NXP Advanced Safety Options
Operating Guide

6.2.2.1
6.2.2.2
6.2.2.3
6.2.2.4
6.2.3
6.2.3.1
6.2.3.2
6.2.3.3
6.2.3.4
6.2.3.5
6.2.4
6.2.4.1
6.2.4.2
6.2.4.3
6.2.4.4
6.2.4.5
6.2.4.6
6.2.5
6.2.5.1
6.2.5.2
6.2.5.3
6.3
6.3.1
6.3.2
6.3.2.1
6.3.2.2
6.3.2.3
6.3.2.4
6.3.2.5
6.3.3
6.3.3.1
6.3.3.2
6.3.3.3
6.3.4
6.3.4.1
6.3.4.2
6.3.4.3
6.3.4.4
Introduction to the STO and SBC Functions 67
The STO Function Used without the SBC Function 68
The STO Function Used with the SBC Function 68
The STO and SBC Signals 69
SS1 - Safe Stop 1 73
Introduction to the SS1 Function 73
Time Monitoring 74
Zero Speed Monitoring 74
Ramp Monitoring 75
The SS1 Signals 75
SS2 - Safe Stop 2 and SOS - Safe Operating Stop 78
Introduction to the SS2 and SOS Functions 78
Time Monitoring 79
Zero Speed Monitoring 79
Ramp Monitoring 80
The SOS Safety Function 80
The SS2 and SOS Signals 80
SQS - Safe Quick Stop 84
Introduction to the SQS Function 84
The SQS Modes 85
The SQS Signals 85
Safe Monitoring Functions 89
Introduction to the Safe Monitoring Functions 89
SLS - Safe Limited Speed 90
Introduction to the SLS Function 90
Time Monitoring 90
Ramp Monitoring 91
The Speed Limit Selection of the SLS Function 91
The SLS Signals 92
SMS - Safe Maximum Speed 96
Introduction to the SMS Function 96
The Maximum Speed Monitoring 96
The SMS Signals 97
SSR - Safe Speed Range 99
Introduction to the SSR Function 99
Time Monitoring 99
Ramp Monitoring 100
The SSR Signals 101
AQ319736045637en-000101/DPD01798 | 5Danfoss A/S © 2021.06
Contents
VACON® NXP Advanced Safety Options
Operating Guide

6.3.5
6.3.5.1
6.3.5.2
6.3.5.3
6.3.5.4
6.4
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.1.5.1
7.1.5.2
7.1.5.3
7.1.6
7.1.6.1
7.1.6.2
7.1.6.3
7.1.6.4
7.1.6.5
7.1.6.6
7.1.6.7
7.1.6.8
7.1.6.9
7.1.6.10
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.2
8.2.1
8.3
SSM - Safe Speed Monitor 103
Introduction to the SSM Function 103
Speed Monitoring 104
The SSM Safe Output 104
The SSM Signals 105
Combinations of Safety Functions 109
Safe Fieldbuses 111
PROFIsafe 111
Introduction to PROFIsafe 111
The Requirements and Restrictions 111
Overview of the PROFIsafe System 112
The PROFIsafe Frame 112
Parameterization for PROFIsafe 113
General Information on Parameterization 113
PROFIsafe Watchdog Time 114
The PROFIsafe Safety Function Response Time (SFRT) 115
PROFIdrive on PROFIsafe 115
General Information on PROFIdrive on PROFIsafe 115
PROFIsafe over PROFIBUS 116
PROFIsafe over PROFINET 117
Data Mapping for PROFIdrive on PROFIsafe 117
Safety Control Word 1 (S_STW1) 117
Safety Status Word 1 (S_ZSW1) 118
Safety Control Word 2 (S_STW2) 119
Safety Status Word 2 (S_ZSW2) 120
VACON Safety Control Word (VS_CW) 122
VACON Safety Status Word (VS_SW) 123
Parameter List 125
General Parameters 125
Parameter File Parameters 125
Common Safety Function Parameters 125
Speed Measurement Parameters 125
Ramp Parameters 126
Estimated Speed Parameters 127
Safe I/O Parameters 127
Digital Input/Output Parameters 127
Safe Fieldbus Parameters 129
AQ319736045637en-000101/DPD017986 | Danfoss A/S © 2021.06
Contents
VACON® NXP Advanced Safety Options
Operating Guide

8.3.1
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
8.12
9
9.1
9.1.1
9.1.2
9.2
9.3
9.4
9.5
10
10.3
10.4
10.5.1
10.6
10.7
10.8
11
11.1
11.2
11.3
11.4
11.5
12
12.1
12.2
12.3
PROFIsafe Parameters 129
STO and SBC Parameters 129
SS1 Parameters 130
SS2 and SOS Parameters 130
SQS Parameters 131
SLS Parameters 132
SMS Parameters 132
SSR Parameters 133
SSM Parameters 133
Validation Parameters 134
Commissioning and Validation 135
Preparing for Commissioning 135
Preparing for Commissioning 135
Procedures Before the First Start-up of the System with the Option 135
Doing the First Start-up After the Installation of the Option Board 136
Validating the Parameter File 137
Checklist before Taking the System into Use 137
Bypassing Safety Features 137
Operation and Maintenance 139
Resetting the Password 141
Factory Reset 141
Updating the Firmware 142
Replacing the Option Board 143
Replacement of Other Components of the Safety System 143
Disposal 144
Technical Data 145
Safety Data 145
Safe Input/Output Data 145
Speed Measurement Data 147
Safe Fieldbus Data 149
Environmental Data 149
Fault Tracing 150
Presentation of Faults on the Control Board 150
Fault Codes 151
OPTAF STO and ATEX Option Board Fault Information 172
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Contents
VACON® NXP Advanced Safety Options
Operating Guide

13
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
13.9
Configuration Examples 173
General Information 173
Emergency Stop Using the STO Function 173
SS1 Used with STO(+SBC) 174
SS1 Without a Direct Support of the Drive Application 176
Light Curtain Control of SLS 177
SLS without a Direct Support of the Drive Application 180
Using an Output of the Option Board to Control the Access to an Area 182
PROFIdrive over PROFIsafe Using the PROFIBUS or PROFINET Option Board 185
A Proximity Sensor for Speed Measurement 187
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Contents
VACON® NXP Advanced Safety Options
Operating Guide

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1 Introduction
1.1 Purpose of the Manual
This manual describes the VACON®Advanced Safety Options (OPTBL, OPTBM, or OPTBN). The VACON®Advanced Safety Options can
be used with the VACON®NXP AC drive.
The operating guide is intended for use by qualified personnel, who are familiar with the VACON®drives and functional safety.
To use the product safely, read and follow the operating instructions.
1.2 Additional Resources
Resources Available for the Drive and Optional Equipment
VACON®NX OPTAF STO Board Manual
VACON®NX All in One Application Guide - information on working with parameters and many application examples
VACON®OPTE3/E5 PROFIBUS DP User Guide
VACON®NX I/O Boards User Manual
VACON®OPTEA/OPTE9 Ethernet Board User Guide
VACON®Ethernet Option Boards Installation Guide
VACON®RS485 and CAN Bus Option Boards Installation Guide
VACON®NXP Advanced Safety Options Quick Guide
The Operating Guide of the AC drive provides the necessary information to get the drive up and running.
Supplementary publications and manuals are available from drives.danfoss.com/knowledge-center/technical-documentation/.
Standards, specifications, and official recommendations
EN IEC-62061 – Safety of machinery – Functional safety of safety-related electrical, electronic and programmable electronic con-
trol systems, 2005
IEC 61784-3 – Industrial communication networks – Profiles – Part 3: Functional safety fieldbuses - General rules and profile defi-
nitions, 2010
EN ISO 13849-1 – Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design, 2015
EN IEC 60204-1 – Safety of machinery – Electrical equipment of machines – Part 1: General requirements, 2006
EN IEC 61800-5-2 – Adjustable speed electrical power drive systems – Part 5-2: Safety requirements – Functional, 2007
IEC 61508 – Functional safety of electrical/electronic/programmable electronic safety related systems, 2010
EN ISO 12100 – Safety of machinery -- General principles for design -- Risk assessment and risk reduction, 2010
ISO 14121-1 – Safety of machinery -- Risk assessment -- Part 1: Principles, 2007
Amendment – PROFIdrive on PROFIsafe Interface for functional safety; Technical Specification for PROFIBUS and PROFINET rela-
ted to PROFIdrive – Profile Drive Technology V4.1, Version 3.00.4, April 2011, Order No.: 3.272
PROFIsafe – Profile for Safety Technology on PROFIBUS DP and PROFINET IO, Version 2.4, March 2007, Order No: 3.192b
Recommendation of Use CNB/M/11.050, rev 05; European co-ordination of Notified Bodies for Machinery, 2013
BGIA Report 2/2008e Functional safety of machine controls – Application of EN ISO 13849 –, 2009
Software and Configurations Files
The firmware for the Advanced Safety Option, https://www.danfoss.com/en/service-and-support/downloads/dds/fieldbus-firm-
ware/.
VACON®Safe, https://www.danfoss.com/en/service-and-support/downloads/dds/vacon-safe/.
The GSD/GSDML file, https://www.danfoss.com/en/service-and-support/downloads/dds/fieldbus-configuration-files/.
For US and Canadian markets:
NOTE! Download the English and French product guides with applicable safety, warning and caution information from https://
www.danfoss.com/en/service-and-support/.
REMARQUE Vous pouvez télécharger les versions anglaise et française des guides produit contenant l'ensemble des informations
de sécurité, avertissements et mises en garde applicables sur le site https://www.danfoss.com/en/service-and-support/.
AQ319736045637en-000101 / DPD01798 | 9Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

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1.3 Manual and Software Version
This manual is regularly reviewed and updated. All suggestions for improvement are welcome.
The original language of this manual is English.
Always make sure that you use the latest or correct revision of the manual when assessing the behavior of the Advanced safety
option board.
Table 1: Manual and Software Version
Manual ver-
sion
New features
Firmware ver-
sion
Hardware ver-
sion
DPD01798B
The first published version of this manual.
DPD01798C
PROFIsafe over PROFINET information added. Chapter Safe fieldbuses
and throughout the manual.
Version history table added.
Table linking option board names to option board codes. Chapter 3.5.1
General Information.
Images edited. Chapters VACON Advanced Safety Option variants and
Configuration examples.
Warning added. Chapter 6.1.4 Violation of a Safety Function.
Fault settings table added. Chapter 3.8.3 Option Board Menu on the
Control Panel.
Safety bypass procedure updated. Chapter 9.5 Bypassing Safety Fea-
tures.
Fault codes edited. Chapter Fault codes.
New configuration example on SLS without drive application support
added. Chapter 13.6 SLS without a Direct Support of the Drive Applica-
tion.
Configuration examples numbered. Chapter Configuration examples.
Other minor updates. Throughout the manual.
DPD01798D
Safety function acknowledgment and reset descriptions updated to
match new behavior. Chapters 6.1.5.1 Acknowledgment of a Safety
Function and 6.1.6 Reset of a Safety Function.
Example of system level calculations updated. Chapter 3.4 Determining
the Achieved Safety Level.
Encoder terminals updated. Chapters 3.5.5 Option Board OPTBM and
3.5.6 Option Board OPTBN.
Option board installation instructions updated. Chapter 4.2 Installing
the Option Board.
Extended slot support and example configuration updated. Chapter 3.1
Using the Advanced Safety Options.
Comment on closed-loop control added. Chapter 3.6.7 Usage of Only
One Speed Sensor.
Old parameters edited and new added. Chapter 3.8.3 Option Board
Menu on the Control Panel.
Watchdog times updated. Chapter 7.1.5.2 PROFIsafe Watchdog Time.
Technical details updated. Chapter 11.1 Safety Data.
Fault codes updated. Chapter Fault codes.
Images edited. Chapters 3.1 Using the Advanced Safety Options, 3.6.8
Estimated Speed, 6.2.3.5 The SS1 Signals, 6.3.4.2 Time Monitoring,
6.3.4.3 Ramp Monitoring, 13.3 SS1 Used with STO(+SBC), 13.5 Light Cur-
FW0281V001
or later
70CVB01938 F
(141X4588) or
later,
70CVB01957 F
(141X4608) or
later,
70CVB01958 E
(141X4610) or
later
AQ319736045637en-000101 / DPD0179810 | Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

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Manual ver-
sion
New features
Firmware ver-
sion
Hardware ver-
sion
tain Control of SLS, and 13.6 SLS without a Direct Support of the Drive
Application.
Other minor updates. Throughout the manual.
DPD01798E
New chapter added, 3.6.3 Speed Discrepancy with Multiple Speed Sour-
ces.
Information on internal variables added. Chapter 10.1 Gathering Diag-
nostic Data.
Some fault numbers for fault code 20 Safety system updated. Chapter
Fault codes.
OPTAF option board fault information added. Chapter 12.3 OPTAF STO
and ATEX Option Board Fault Information.
Other minor updates. Throughout the manual.
FW0281V001
or later
70CVB01938 F
(141X4588) or
later,
70CVB01957 F
(141X4608) or
later,
70CVB01958 E
(141X4610) or
later
DPD01798F
PROFINET IO/PROFIsafe Certificate updated. 1.4 Approvals and Certifi-
cates.
Changes in layout and structure.
FW0281V001
or later
70CVB01938 F
(141X4588) or
later,
70CVB01957 F
(141X4608) or
later,
70CVB01958 E
(141X4610) or
later
AQ319736045637en-000101 / DPD01798 | 11Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

1.4 Approvals and Certificates
e30bi948.10
Illustration 1: TÜV Certificate
AQ319736045637en-000101 / DPD0179812 | Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

Certificate
PROFIBUS Nutzerorganisation e.V. grants to
Vacon Ltd
Runsorintie 7, 65380 VAASA, FINLAND
the Certificate No: Z20212 for the PROFIsafe Device:
Model Name: Vacon OPTEA, OPTBL, OPTBM, OPTBN Advanced Safety Option
Order-Number: OPTBL, OPTBM, OPTBN
Revision: SW/FW: V4.0.0; HW: 6
Application CRC: Channel A: 0x84C3
Channel B: 0xCB77
This certificate confi rms that the product has successfully passed the certifi cation tests with the
following PROFI
safe
scope:

PROFIsafe_V2 functionality on PROFINET IO
Test Report Number:
PS127-2
Authorized Test Laboratory:
SIEMENS AG, Fürth, Germany
The tests were executed in accordance with the following documents:
“
PROFIsafe
-
Test Spec
ification
for
F
-Slaves, F-Devices, and F-Hosts, Version 2.1, March 2007”.
This certificate is granted according to the document:
“Framework for testing and certification of PROFIBUS and PROFINET products”.
For all products that are placed in circulation by March 19, 2023 the certificate is valid for life.
Karlsruhe, May 14
,
2020
_____________________________
(Official in Charge)
Board of PROFIBUS Nutzerorganisation e. V.
_____________________________
(Karsten Schneider)
_____________________________
(Dr. Jörg Hähniche)
e30bi950.10
Illustration 2: PROFINET IO/PROFIsafe Certificate
AQ319736045637en-000101 / DPD01798 | 13Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

e30bi949.10
Illustration 3: EC Declaration of Conformity
AQ319736045637en-000101 / DPD0179814 | Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

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1.5 Product Overview
The Advanced safety option board is intended to be used for implementing safety functions according to application needs. The
option board is intended to be used with the OPTAF STO option board to implement the safety functions and features in VACON®
NX drives.
The safety functions available with the Advanced safety option board (according to EN IEC 61800-5-2)
Safe Torque Off (STO)
Safe Stop 1 (SS1)
Safe Stop 2 (SS2)
Safe Operating Stop (SOS)
Safe Brake Control (SBC)
Safe Limited Speed (SLS)
Safe Speed Range (SSR)
Safe Speed Monitor (SSM)
The manufacturer-specific safety functions
Safe Maximum Speed (SMS)
Safe Quick Stop (SQS)
For more information on the safety functions, see chapter Safety functions.
The safe fieldbuses supported by the option board
PROFIsafe communication over PROFIBUS
PROFIsafe communication over PROFINET
Communication over PROFIsafe is implemented according to the PROFIdrive on PROFIsafe amendment.
WARNING
DESIGNING OF SAFETY SYSTEMS
Designing a safety-related system incorrectly could result in death or serious injury.
The designing of safety-related systems requires special knowledge and skills.
Only qualified persons are permitted to install and set up the product.
WARNING
RISK ASSESSMENT OF A SAFETY SYSTEM
The use of safety functions provided by the Advanced Safety Option does not in itself ensure safety.
To make sure that the commissioned system is safe, you must make an overall risk assessment.
Safety devices like the Advanced safety option board must be correctly incorporated into the entire system.
The entire system must be designed in compliance with all relevant standards within the field of industry. Standards such as
EN 12100 Part 1, Part 2, and ISO 14121-1 provide methods for designing safe machinery and for making a risk assessment.
CAUTION
PROTECTION AGAINST CONTAMINATION
For the product to work properly, it must be protected against conductive dust and contaminants.
For example, install the Advanced Safety Option board in at least an IP54 enclosure.
NOTICE
This guide provides information on the use of the safety functions that the Advanced Safety Option provides. This information is
in compliance with accepted practice and regulations at the time of writing. However, the product/system designer is responsi-
ble for making sure that the system is safe and in compliance with relevant regulations.
AQ319736045637en-000101 / DPD01798 | 15Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

1.6 Terms and Abbreviations
Table 2: Symbols and Abbreviations
Abbreviation
Definition
Admin
The highest user level for accessing the Advanced safety option board functions. Identified via a pass-
word.
Acknowledgment
A signal that indicates that a safety function can be deactivated. Valid for safety functions that use man-
ual acknowledgment.
ASM
An asynchronous motor
Continuous mode
Safety function is active as a part of normal operation.
CRC
Cyclic Redundancy Check
CW
Control word
DAT
Device Acknowledgment Time
Diagnostic Coverage
(DC)
The coverage of dangerous failures by run-time diagnostics.
EMC
Electromagnetic compatibility
Encoder interface
board
An option board that has an encoder interface.
F-Device
A communication peer that can perform the PROFIsafe protocol.
F-Host
A data processing unit that can perform the PROFIsafe protocol and service the "black channel".
FMEA
Failure Mode and Effects Analysis
Critical fault
A fault that causes the option board to enter into a fault state and requires a reboot to be reset.
GSD
Generic Station Description (used with PROFIBUS).
GSDML
General Station Description Markup Language (used with PROFINET).
Hardware Fault Tol-
erance (HFT)
The number of hardware failures that the safety system can tolerate without the loss of the safety func-
tion.
HAT
Host Acknowledgment Time.
High demand mode
Safety functions are performed on demand. The frequency of demand is more than once a year.
HTL
High Threshold Logic. A voltage level definition.
I/O
Input/Output
Low demand mode
Safety functions are performed on demand. The frequency of demand is less than once a year.
MTTF
Mean Time To Failure
OPTAF
An option board that handles the activation of the STO function for the AC drive.
OPTBL, OPTBM,
OPTBN
The variants of the Advanced safety option. OPTBL: no encoder interface. OPTBM: with digital pulse type
encoder interface board. OPTBN: with Sin/Cos type encoder interface board.
OPTE3/5
Option board that handles the PROFIBUS DP interface.
OPTEA
Option board that handles the PROFINET IO interface.
AQ319736045637en-000101 / DPD0179816 | Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

Abbreviation
Definition
Parameter file
A configuration file that contains the parameters for an Advanced safety option board.
Unverified parame-
ter file
A parameter file that contains parameters that have not been verified by an Advanced safety option
board.
Verified parameter
file
A parameter file that contains parameters that have been verified and can be used in an Advanced safety
option board.
Validated parameter
file
A verified parameter file that contains parameters that have been tested and approved in the system.
PFH
Probability of failure per hour. Valid for systems that operate in a high demand mode or continuous
mode.
PFHd
Probability of dangerous failure per hour.
PFD
Probability of failure on demand. The probability that the safety function does not work when requested.
Valid for systems that operate in a low demand mode.
PL
Performance Level
PLC
Programmable Logic Controller
PMSM
A permanent magnet synchronous motor
PROFIBUS
Standardized fieldbus protocol for RS-485 communication.
PROFIdrive
A specification for implementing AC drive related behavior over PROFIBUS/ PROFINET.
PROFINET
Standardized fieldbus protocol for Ethernet communication.
PROFIsafe
A safe fieldbus layer that operates over PROFIBUS/PROFINET.
Reached
A safety function that is reached has stopped the drive (safe stopping functions), or reached a safe area
for the measured value and monitoring for leaving the area has been activated (safe monitoring func-
tions).
Resettable fault
An error in that can be reset with a reset signal.
Reset (signal)
A signal used to reset the current violations and faults in the drive and/or the Advanced safety option
board and to deactivate the STO function after a violation or fault.
SFF
Safe Failure Fraction
Safe monitoring
function
A safety function that monitors a specific value, usually speed.
Safe stopping func-
tion
A safety function intended to stop the motor.
Safe range
A range where the monitored value can be. Exceeding the limits of a safe range will cause a violation of
the safety function.
Safe state
A state of a device or process that should be maintained to avoid dangerous incidents. For the AC drive
system, the safe state is defined as activated STO function.
Service
A user level for accessing the Advanced safety option board functions. Identified via a password. In this
user level, it is not possible to verify a parameter file or change passwords.
SFRT
Safety Function Response Time
SRP/CS
Safety-Related Part of a Control System
AQ319736045637en-000101 / DPD01798 | 17Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

Abbreviation
Definition
STO
Safe Torque Off. A safety function according to EN IEC 61800-5-2.
SS1
Safe Stop 1. A safety function according to EN IEC 61800-5-2.
SS2
Safe Stop 2. A safety function according to EN IEC 61800-5-2.
SQS
Safe Quick Stop. A manufacturer-specific safety function. Used as a violation response for safe monitoring
functions. Parameterizable to behave as the STO, SS1 or SS2 function.
SQS-STO, SQS-SS1,
SQS-SS2
Used to indicate the STO, SS1 or SS2 function as the selected behavior of the SQS function.
SLS
Safe Limited Speed. A safety function according to EN IEC 61800-5-2.
SSR
Safe Speed Range. A safety function according to EN IEC 61800-5-2.
SSM
Safe Speed Monitor. A safety function according to EN IEC 61800-5-2.
SMS
Safe Maximum Speed. A manufacturer-specific safety function.
SBC
Safe Brake Control. A safety function according to EN IEC 61800-5-2.
SOS
Safe Operating Stop. A safety function according to EN IEC 61800-5-2.
SIL
Safety Integrity Level
SW
Status word
TTL
Transistor-Transistor Logic. A voltage level definition.
Violation
A fault caused by a safety function detecting a violation of the monitored value(s). The value monitored
by a safety function has exceeded the set limit for that value.
Violation response
A reaction to a violation. It is the STO function for the safe stopping functions, and the SQS function for
the safe monitoring functions.
WCDT
Worst Case Delay Time
WDTime
Watchdog Time
AQ319736045637en-000101 / DPD0179818 | Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide

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2 Safety
2.1 Safety Symbols
The following symbols are used in this manual:
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates information considered important, but not hazard-related (for example, messages relating to property damage).
2.2 Danger and Warnings
DANGER
SHOCK HAZARD FROM POWER UNIT COMPONENTS
The power unit components are live when the drive is connected to mains. A contact with this voltage can lead to death or seri-
ous injury.
Do not touch the components of the power unit when the drive is connected to mains. Before connecting the drive to mains,
make sure that the covers of the drive are closed.
DANGER
SHOCK HAZARD FROM TERMINALS
The motor terminals U, V, W, the brake resistor terminals, or the DC terminals are live when the drive is connected to mains, also
when the motor does not operate. A contact with this voltage can lead to death or serious injury.
Do not touch the motor terminals U, V, W, the brake resistor terminals, or the DC terminals when the drive is connected to
mains. Before connecting the drive to mains, make sure that the covers of the drive are closed.
DANGER
SHOCK HAZARD FROM DC LINK OR EXTERNAL SOURCE
The terminal connections and the components of the drive can be live 5 minutes after the drive is disconnected from the mains
and the motor has stopped. Also the load side of the drive can generate voltage. A contact with this voltage can lead to death or
serious injury.
Before doing electrical work on the drive:
Disconnect the drive from the mains and make sure that the motor has stopped.
Lock out and tag out the power source to the drive.
Make sure that no external source generates unintended voltage during work.
Wait 5 minutes before opening the cabinet door or the cover of the AC drive.
Use a measuring device to make sure that there is no voltage.
AQ319736045637en-000101 / DPD01798 | 19Danfoss A/S © 2021.06
Safety
VACON® NXP Advanced Safety Options
Operating Guide

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WARNING
SHOCK HAZARD FROM CONTROL TERMINALS
The control terminals can have a dangerous voltage also when the drive is disconnected from mains. A contact with this voltage
can lead to injury.
Make sure that there is no voltage in the control terminals before touching the control terminals.
WARNING
ACCIDENTAL MOTOR START
When there is a power-up, a power break, or a fault reset, the motor starts immediately if the start signal is active, unless the pulse
control for Start/Stop logic is selected. If the parameters, the applications or the software change, the I/O functions (including the
start inputs) can change. If you activate the auto reset function, the motor starts automatically after an automatic fault reset. See
the Application Guide. Failure to ensure that the motor, system, and any attached equipment are ready for start can result in
personal injury or equipment damage.
Disconnect the motor from the drive if an accidental start can be dangerous. Make sure that the equipment is safe to operate
under any condition.
WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the drive properly can result in death or serious injury.
Ensure the correct grounding of the equipment by a certified electrical installer.
WARNING
SHOCK HAZARD FROM PE CONDUCTOR
The drive can cause a DC current in the PE conductor. Failure to use a residual current-operated protective (RCD) device Type B or
a residual current-operated monitoring (RCM) device can lead to the RCD not providing the intended protection and therefore
can result in death or serious injury.
Use a type B RCD or RCM device on the mains side of the drive.
2.3 Cautions and Notices
CAUTION
DAMAGE TO THE AC DRIVE FROM INCORRECT MEASUREMENTS
Doing measurements on the AC drive when it is connected to mains can damage the drive.
Do not do measurements when the AC drive is connected to mains.
CAUTION
DAMAGE TO THE AC DRIVE FROM INCORRECT SPARE PARTS
Using spare parts that are not from the manufacturer can damage the drive.
Do not use spare parts that are not from the manufacturer.
CAUTION
DAMAGE TO THE AC DRIVE FROM INSUFFICIENT GROUNDING
Not using a grounding conductor can damage the drive.
Make sure that the AC drive is always grounded with a grounding conductor that is connected to the grounding terminal
that is identified with the PE symbol.
AQ319736045637en-000101 / DPD0179820 | Danfoss A/S © 2021.06
Safety
VACON® NXP Advanced Safety Options
Operating Guide