Renishaw FORTiS-N User manual

#renishaw
www.renishaw.com/fortisdownloads
Installation guide
M-6725-9026-02-A
FORTiS-N™enclosed encoder system
Functional Safety installation guide and safety manual

2FORTiS-N Functional Safety enclosed encoder system – original instructions
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Contents
1 Legal notices ...................................................................................................................6
1.1 Patents ................................................................................................................6
1.2 Terms and Conditions and Warranty .........................................................................................6
1.3 Declaration of Conformity..................................................................................................6
1.4 Product compliance ......................................................................................................6
1.5 Federal Code Of Regulation (CFR) FCC Part 15 – RADIO FREQUENCY DEVICES....................................................7
1.6 Intended use ...........................................................................................................7
1.7 Warnings ..............................................................................................................7
1.8 Packaging..............................................................................................................8
1.9 REACH regulation .......................................................................................................8
1.10 Disposal of waste electrical and electronic equipment............................................................................8
1.11 Further information.......................................................................................................8
2 Denitions .....................................................................................................................9
3 Information for use...............................................................................................................9
4 Functional Safety data declaration .................................................................................................10
5 Safety function.................................................................................................................11
5.1 Fault exclusions ........................................................................................................11
5.2 Failure modes effects and diagnostics analysis ................................................................................11
5.3 Installation ............................................................................................................11
5.4 Commissioning test .....................................................................................................11
5.5 Evaluation unit monitoring ................................................................................................12
5.6 Maintenance...........................................................................................................12
5.7 Repair................................................................................................................12
5.8 Proof testing...........................................................................................................12

4FORTiS-N Functional Safety enclosed encoder system – original instructions
6 Certication ...................................................................................................................13
7 Summary of EU declaration of conformity............................................................................................13
8 Summary of UK declaration of conformity............................................................................................14
9 Overview of the FORTiS-N FS encoder system .......................................................................................15
10 Parts list......................................................................................................................16
10.1 Included in the box ......................................................................................................16
10.2 Not included / required tools ..............................................................................................17
10.3 Optional extras .........................................................................................................18
10.4 Cable options ..........................................................................................................18
11 Storage and handling ...........................................................................................................19
12 Installation drawings ............................................................................................................20
12.1 Mounting surface preparation..............................................................................................20
12.2 Datum location edge or dowel pins – standard end caps ........................................................................20
12.3 Mounting orientations – standard end caps ...................................................................................21
12.4 Mounting orientations – short end caps......................................................................................21
12.5 FORTiS system installation drawing – standard end caps........................................................................22
12.6 FORTiS system installation drawing – short end caps...........................................................................23
13Productspecication ............................................................................................................24
14 Installation procedure – extrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
14.1 Protection for sealed linear encoders........................................................................................25
14.2 Thermal datum.........................................................................................................25
14.3 Extrusion installation without mounting spar ..................................................................................26
14.4 Installation with mounting spar.............................................................................................27
14.5 Mounting spar installation drawing..........................................................................................28
14.6 Spar mounting options ...................................................................................................29

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15 Installation procedure – readhead..................................................................................................30
15.1 Start of measuring length – standard........................................................................................30
15.2 Start of measuring length – short end caps ...................................................................................30
15.3 Alignment bracket method ................................................................................................31
15.4 Set-up shim method.....................................................................................................33
15.5 Installation using the mounting aid method ...................................................................................35
15.6 FORTiS cable connection ................................................................................................37
15.7 Validating an installation..................................................................................................38
15.8 Air supply .............................................................................................................39
16 Cables and serial interfaces ......................................................................................................40
16.1 Generalspecications ...................................................................................................40
16.2 Permissible cable lengths.................................................................................................40
16.3 BiSS Safety serial interface ...............................................................................................42
16.4 Siemens DRIVE-CLiQ serial interface .......................................................................................44

6FORTiS-N Functional Safety enclosed encoder system – original instructions
1.4 Product compliance
This document is an installation guide and safety manual which details the actions required for the
safe integration of the FORTiS-N FS encoder system with BiSS Safety or Siemens DRIVE-CLiQ
serial interfaces, as designated by the letter S in this location in the part number,
e.g. FN100A012HC28DS050X, into a functionally safe system.
The FORTiS-N FS encoder system is suitable for use in a Category 3 performance level d (PLd)
applicationincompliancewithISO13849‑1andinasafetyintegritylevel2(SIL2)applicationin
compliancewithIEC61508‑1andIEC61800‑5‑2wheninstalledandoperatedinaccordance
withtheinstructionsdened.Failuretofollowthecorrectuseinstructionsandfailuretoheedthe
limitations may result in SIL2 and/or PLd not being achieved and will invalidate the Functional
Safetycertication.
AcopyoftheFORTiS‑NFSencodersystemcerticateisavailablefromourwebsite:
www.renishaw.com/productcompliance
1 Legal notices
1.1 Patents
Features of Renishaw’s encoder systems and similar products are the subjects of the following
patentsandpatentapplications:
1.2 Terms and Conditions and Warranty
Unless you and Renishaw have agreed and signed a separate written agreement, the equipment
and/or software are sold subject to the Renishaw Standard Terms and Conditions supplied with
suchequipmentand/orsoftware,oravailableonrequestfromyourlocalRenishawofce.
Renishaw warrants its equipment and software for a limited period (as set out in the Standard
TermsandConditions),providedthattheyareinstalledandusedexactlyasdenedinassociated
Renishawdocumentation.YoushouldconsulttheseStandardTermsandConditionstondoutthe
full details of your warranty.
Equipment and/or software purchased by you from a third-party supplier is subject to separate
terms and conditions supplied with such equipment and/or software. You should contact your
third-party supplier for details.
1.3 Declaration of Conformity
Renishaw plc hereby declares that the FORTiS-N™encoder system is in compliance with the
essentialrequirementsandotherrelevantprovisionsof:
• the applicable EU directives
• the relevant statutory instruments under UK law.
ThefulltextoftheDeclarationofConformityisavailableat:www.renishaw.com/productcompliance
SIL2
FUNCTIONAL
SAFETY
PLd
CN1260551 US7499827 JP4008356 GB2395005 US20100163536
US20150225858 CN102197282 EP2350570 JP5480284 US8505210
KR1630471 CN102388295 EP2417423 KR1701535 US2012007980
CN102460077 EP2438402 US20120072169 KR1851015 JP6074392
JP5755223 EP01103791 US6465773

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1.5 Federal Code Of Regulation (CFR) FCC Part 15
– RADIO FREQUENCY DEVICES
FCC Compliance Statement
47 CFR Section 15.19
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause
undesired operation.
47 CFR Section 15.21
TheuseriscautionedthatanychangesormodicationsnotexpresslyapprovedbyRenishawplcor
authorised representative could void the user’s authority to operate the equipment.
47 CFR Section 15.105
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at their own expense.
47 CFR Section 15.27
This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used
with the unit to ensure compliance.
Supplier’s Declaration of Conformity
47 CFR § 2.1077
Unique Identier: FORTiS-N
Responsible Party – U.S. Contact Information
Renishaw Inc.
1001 Wesemann Drive
West Dundee
Illinois
IL 60118
United States
Telephonenumber:+18472869953
Email:[e-mail]
ICES-003 – Information Technology Equipment (including
Digital Apparatus)
This ISM device complies with Canadian ICES-003(A).
Cet appareil ISM est conforme à la norme ICES-003(A).
1.6 Intended use
The FORTiS encoder system is designed for metrology in industrial environments, such as machine
tools.Itmustbeinstalled,operated,andmaintainedasspeciedinRenishawdocumentationand
in accordance to the Standard Terms and Conditions of the Warranty and all other relevant legal
requirements.
1.7 Warnings
In all applications involving the use of machine tools, eye protection is recommended.

8FORTiS-N Functional Safety enclosed encoder system – original instructions
1.8 Packaging
The packaging of our products contains the following materials and can be recycled.
1.9 REACH regulation
Information required by Article 33(1) of Regulation (EC) No. 1907/2006 (“REACH”) relating to
productscontainingsubstancesofveryhighconcern(SVHCs)isavailableat:
www.renishaw.com/REACH
1.10 Disposal of waste electrical and electronic
equipment
The use of this symbol on Renishaw products and/or accompanying documentation
indicates that the product should not be mixed with general household waste upon
disposal. It is the responsibility of the end user to dispose of this product at a
designated collection point for waste electrical and electronic equipment (WEEE) to
enable reuse or recycling. Correct disposal of this product will help to save valuable
resources and prevent potential negative effects on the environment. For more
information, contact your local waste disposal service or Renishaw distributor.
Packaging components
Packaging
component
Material ISO 11469 Recycling guidance
Wooden box Plywood and softwood Not applicable Recyclable
Outer box Cardboard Not applicable Recyclable
Polypropylene PP Recyclable
Inserts Low density polyethylene foam LDPE Recyclable
Cardboard Not applicable Recyclable
Bags High density polyethylene bag HDPE Recyclable
Metalised polyethylene PE Recyclable
1.11 Further information
Further information relating to the FORTiS encoder range can be found in the FORTiS
datasheetsavailablefromyourlocalRenishawrepresentativeorfromourwebsite:
www.renishaw.com/fortisdownloads
For further details regarding FORTiS enclosed linear encoder variants refer to the following table.
Encoder system description Part numbers
Data sheet Installation guide
FORTiS-S L-9517-9934 M-9768-9857
FORTiS-S enclosed encoder system with
multiple readheads
Refer to installation guide M-6725-9176
FORTiS-S functional safety (FS) system L-9517-9958 M-6725-9016
FORTiS-S functional safety (FS) system
with multiple readheads
Refer to installation guide M-6725-9188
FORTiS-N L-9517-9946 M-9768-9887
FORTiS-N enclosed encoder system with
multiple readheads
Refer to installation guide M-6725-9200
FORTiS-N functional safety (FS) system L-9517-9970 M-6725-9026
FORTiS-N functional safety (FS) system
with multiple readheads
Refer to installation guide M-6725-9212

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2 Denitions 3 Information for use
WARNING A hazard with a medium risk of injury if not avoided WARNING Not to be used in environments where there is an explosive atmosphere
WARNING Not to be used by medical devices
ESD handling The ESD Susceptibility Symbol consists of a triangle, a reaching
hand, and a slash through the reaching hand. The triangle means
“Caution” and the slash through the reaching hand means “Don’t
touch”.
Mechanical safe position The maximum distance the scale might move from its installed
position,forexampleifthexingsworkloose.
Evaluation unit External item of equipment in which the output signal of the
encoderisevaluated:forexample,machinecontrollerorsafety
relay.
System manufacturer Personnel with responsibility for selecting the encoder and verifying
its capability is appropriate for the safety-related application.
System installer Personnelwithresponsibilityforttingtheencoderinthespecic
application.
The FORTiS-N FS encoder system is designed to be used as part of a safety-related control
systemasspeciedbythesystemmanufacturer.Itistheresponsibilityofthesystemmanufacturer
to set the evaluation unit to implement the appropriate actions when the FORTiS-N FS encoder
system reports an error. The decision to use this system for the intended purpose is the
responsibilityofthesystemmanufacturer.TheFORTiS‑NFSencodersystemiscertiedtothe
SIL and PL levels as shown in the “Functional Safety data declaration” table; however, the system
manufacturer must conduct their own assessment of the full system to determine its safety
capability.
Correct use includes:
• OperatingtheFORTiS‑NFSencodersystemwithinthelimitsdenedinthisdocument.
• Installing the system as described in this document.
• Maintaining the system as described in this document.
System components covered by this installation guide:
TheFORTiS‑NFSencodersystemcomprisesthefollowingparts:
• FORTiS-N FS encoder unit
• Accessories
• Cable
• Extension cable (when required)
• DRIVE-CLiQ interface (when required)
NOTE: If the original termination supplied with the FORTiS-N FS encoder system is altered or
a non-Renishaw cable that is not approved is used, then it is the responsibility of the system
manufacturertomakesurethesystemiscompliantwithIEC61800‑5‑2:2016Electromagnetic
immunity requirement for safety related systems – Annex E, second environment.

10 FORTiS-N Functional Safety enclosed encoder system – original instructions
4 Functional Safety data declaration
Product identication FORTiS-N FS with BiSS Safety and
Siemens DRIVE-CLiQ serial interfaces
IEC61508 safety data ISO13849 safety data
The FORTiS-N FS encoder system provides safe position data that supports the following safety
sub‑functionsdenedbyIEC61800‑5‑2:
• Safe stop 1 (SS1) and Safe stop 2 (SS2) 1
• Safe operating stop (SOS) 1
• Safelimitedacceleration(SLA)≤200m/s2
• Safeaccelerationrange(SAR)≤200m/s2
• Safelimitedspeed(SLS)≤4m/s
• Safespeedrange(SSR)≤4m/s
• Safely limited position (SLP) 1
• Safely limited increment (SLI) 1
• Safe direction (SDI)
• Safespeedmonitor(SSM)≤4m/s
1 SeethesafetyfunctionrestrictionsforthesafepositiongureforeachFORTiS‑NFSencodersystemvariant.
Safety integrity level 2
Random hardware failures (per hour)
– BiSS Safety serial interface
lS= 2.60E-07
lD= 4.08E-07
lDD = 3.67E-07
lDU = 4.08E-08
Random hardware failures (per hour)
– Siemens DRIVE-CLiQ serial interface
lS= 3.46E-07
lD= 6.02E-07
lDD = 5.42E-07
lDU = 6.02E-08
PFDavg Not applicable due to continuous
demand mode
PFH (per hour) – BiSS Safety serial interface lDU = 4.08E-08
PFH (per hour) – Siemens DRIVE-CLiQ serial interface lDU = 6.02E-08
Architectural constraints Type B
HFT 0
SFF 94%
Hardware safety integrity compliance Route 1H
Systematic safety integrity compliance Route 1S
Systematic capability SC 2
Demand mode Continuous
Proof test interval Not required for continuous demand
mode
MTTFD– BiSS Safety serial interface 292 years
MTTFD– Siemens DRIVE-CLiQ serial interface 189 years
Diagnostic coverage Medium (90%)
Category 3
Performance level d
Lifetime/replacement limits 20 years

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5 Safety function
The FORTiS-N FS encoder system shall provide a safe position when requested by the
evaluation unit.
Thefollowingrestrictionsapplytothisclaim:
• Thesysteminstallermustperformaveriedcommissioningtestduringinstallation.
• Thesystemrepairermustperformaveriedcommissioningtestfollowingreplacementofa
system part.
• Themaximumrequestratesupportedis32kHzand16kHzforDRIVE‑CLiQ.
• Electrical errors for the BiSS Safety serial interface are detected by the evaluation unit
comparing CPW and SPW content. See the data sheet BiSS Safety for RESOLUTE and
FORTiS encoders (Renishaw part no. L-9517-9884) for more information.
• Electrical errors for the Siemens DRIVE-CLiQ serial interface are detected by the evaluation
unit comparing POS1 and POS2 content. See the relevant Siemens AG evaluation unit manual
for more information.
• When installed correctly, the FORTiS-N FS encoder, with or without mounting spar, has a
mechanical safe position of ±1 mm.
5.1 Fault exclusions
ThefollowingwillinvalidatetheFunctionalSafetycerticationoftheFORTiS‑NFSencodersystem:
• Faults caused by cutting and reconnecting the cable or the use of a non-Renishaw cable that is
not approved.
• Incorrect installation.
• Dismantling.
• Operatingthesystemoutsidethelimitsspeciedinthisinstallationguide.
5.2 Failure modes effects and diagnostics analysis
All diagnosed failure modes are detected immediately except for a position discrepancy between
thetwomeasurementmethodswhichisdetectedwithin375μs.
See section 4 on page 10 for a summary of the FMEDA.
NOTE:ForthepurposesoftheFMEDAcalculationthefollowingconditionshavebeenassumed:
5.3 Installation
For the safety function to be valid the instructions detailed in this installation guide must be
followed.
5.4 Commissioning test
The following test MUST be performed when commissioning the FORTiS-N FS encoder system
and after any repair or maintenance of the system.
Resolution check Movetheaxisbyaknowndistanceandconrmthattheposition
changes as expected. The tolerance for raising a fault condition is
relative to the safe position determined by the system manufacturer.
Method: SN29500-2005-1 Environment: Ground mobile Temperature: 60°C

12 FORTiS-N Functional Safety enclosed encoder system – original instructions
5.5 Evaluation unit monitoring
To achieve full system integrity the evaluation unit must continuously monitor the error condition of
each readhead in the FORTiS-N FS encoder system, and in the case of fault detection place the
system into a safe state within the process safety time.
NOTES:
1. The evaluation unit must have its Functional Safety functions enabled (as often it is a
congurationparametertoturnonFunctionalSafetyfunctionality)andmustrespondcorrectly
toaFORTiS‑NFSencodersystempositionerrorag.
2. ApersistentfaultconditionmayindicateahardwarefailureoftheFORTiS‑NFSencoder
system or an installation problem.
5.6 Maintenance
Themaintenancecheckintervalswillbedenedbythesystemmanufactureraccordingtotheirrisk
assessment.Therearenouser‑serviceablepartswithintheFORTiS‑NFSencodersystem.
Thefollowingmaintenanceactionsareadvised:
• Check the extrusion screws and readhead retaining screws are correctly tightened.
• Check for worn or damaged cables and connectors.
• Check the cable connectors are correctly tightened/located.
• Checktheairsupplyttingiscorrectlytightenedandtheairhoseiscorrectlytted.
• When the DRIVE-CLiQ interface is used check the retaining screws are correctly tightened.
5.7 Repair
• Repair of the FORTiS-N FS encoder system is only by replacement of parts.
• The replacement parts must have the same part number as the original parts.
• The repaired encoder system must be installed and commissioned in accordance with
“Commissioning test” on page 11.
• In the event of failure the affected parts should be returned to Renishaw for further analysis.
• UsingdamagedpartsinvalidatestheFunctionalSafetycertication.
5.8 Proof testing
Itistheresponsibilityofthesystemmanufacturertodeneanyprooftestingofthesystem.Dueto
the diagnostic coverage (DC) and safe failure fraction (SFF) required to achieve SIL2, the encoder
can only support continuous demand use.

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6 Certication
FORTiS-N FS encoder system
Functional Safety Certicate No. FSC003
SIL2
FUNCTIONAL
SAFETY
PLd
UnderthetermsofCSASIRAFunctionalSafetyCerticateSIRACASS00023/02, for the
managementandself‑certicationoffunctionalsafetyactivitiesuptoSIL3/PLd.
Renishawplcdeclaresthattheproductslistedbythisinstallationguidemeettherequirementsof:
• IEC61508‑1:2010,IEC61508‑2:2010andIEC61508‑3:2010
• IEC61800‑5‑2:2016
• ISO13849‑1:2015andISO13849‑2:2012
when used as an element/subsystem in safety-related systems performing safety functions
requiringuptoandincluding:
• SIL2 with HFT = 0 (1oo1)
• Category 3, PLd.
EUD 2021-00819
This declaration of conformity is issued under the sole responsibility of the manufacturer, Renishaw
plc.Theobjectofthedeclarationisidentiedbelow:
Productname: FORTiS-S™FS and FORTiS-N™FS enclosed encoder system
Description: Enclosed linear FS readhead and scale assembly
Partno.: Validfrom: Description:
FS1-----------S---- -02 FORTiS-S™FSstandardsizeenclosedlinearencoders
FN1-----------S---- -02 FORTiS-N™FSnarrowsizeenclosedlinearencoders
2006/42/EC Machinery Directive
2014/30/EU Electromagnetic Compatibility (EMC)
2011/65/EU Ontherestrictionoftheuseofcertainhazardoussubstancesinelectrical
and electronic equipment – RoHS
ENISO12100:2010 Safety of machinery – General principles for design –
Risk assessment and risk reduction
ENISO13849‑1:2015 Safety of machinery – Safety-related parts of control systems
Part1:Generalprinciplesfordesign(ISO13849‑1:2015)
ENISO13849‑2:2012 Safety of machinery – Safety-related parts of control systems
Part2:Validation(ISO13849‑2:2012)
EN61326‑1:2013 Electrical equipment for measurement, control, and laboratory use.
EMC requirements
Part1:Generalrequirements
EN62471:2008 Photobiological safety of lamps and lamp systems
ENIEC63000:2018 Technical documentation for the assessment of electrical and electronic
productswithrespecttotherestrictionofhazardoussubstances
The object of the declaration described above is in conformity with all relevant EU harmonisation
legislationandfullsalltherelevantprovisionswithEUdirectives:
andcomplieswiththefollowingtechnicalstandards:
7 Summary of EU declaration of conformity
EUbasedpersonauthorisedtocompilethetechnicalle:Renishaw(Ireland)DAC,Swords
Business Park, Swords, Co. Dublin, K67 FX67, Ireland.
ForthefullDeclarationofConformityEUD2021‑00819see:
www.renishaw.com/productcompliance

14 FORTiS-N Functional Safety enclosed encoder system – original instructions
8 Summary of UK declaration of conformity
UKD 2021-00819
This declaration of conformity is issued under the sole responsibility of the manufacturer, Renishaw
plc.Theobjectofthedeclarationisidentiedbelow:
Productname: FORTiS-S™FS and FORTiS-N™FS enclosed encoder system
Description: Enclosed linear FS readhead and scale assembly
Partno.: Validfrom: Description:
FS1-----------S---- -02 FORTiS-S™FSstandardsizeenclosedlinearencoders
FN1-----------S---- -02 FORTiS-N™FSnarrowsizeenclosedlinearencoders
S.I. 2008 No. 1597 Supply of Machinery (Safety) Regulations 2008
S.I. 2016 No. 1091 Electromagnetic Compatibility Regulations 2016
S.I. 2012 No. 3032 TheRestrictionoftheUseofCertainHazardousSubstancesin
Electrical and Electronic Equipment Regulations 2012 – RoHS
ENISO12100:2010 Safety of machinery – General principles for design –
Risk assessment and risk reduction
ENISO13849‑1:2015 Safety of machinery – Safety-related parts of control systems
Part1:Generalprinciplesfordesign(ISO13849‑1:2015)
ENISO13849‑2:2012 Safety of machinery – Safety-related parts of control systems
Part2:Validation(ISO13849‑2:2012)
EN61326‑1:2013 Electrical equipment for measurement, control, and laboratory use
EMC requirements
Part1:Generalrequirements
EN62471:2008 Photobiological safety of lamps and lamp systems
ENIEC63000:2018 Technical documentation for the assessment of electrical and electronic
productswithrespecttotherestrictionofhazardoussubstances
The object of the declaration described above is in conformity with all relevant UK Statutory
Instruments(andtheiramendments):
andcomplieswiththefollowingtechnicalstandards:
ForthefulldeclarationofconformityUKD2021‑00819see:
www.renishaw.com/productcompliance

15www.renishaw.com
9 Overview of the FORTiS-N FS encoder
system
This system is an enclosed linear optical encoder designed for use in harsh industrial environments
where high-precision feedback and metrology are required. Based upon Renishaw’s award-winning
absolute technology, the rugged non-contact design has no internal moving parts, such as bearings
or wheeled readhead carriages, thus improving the overall reliability. Additionally, hysteresis and
backlash errors associated with mechanical contact system designs are reduced.
Inadditiontoenhancedbreakageresistance,therobuststeelscalehasacoefcientofthermal
expansion similar to the base material used in the majority of machines, reducing errors due to
thermal effects whilst increasing measurement certainty.
Renishaw’spatentedset‑upLEDprovidesinstantvericationoftheencoder’ssignalstrength
and therefore its accurate alignment. This intuitive procedure eliminates the need for additional
peripheral diagnostics equipment during installation. When combined with Renishaw’s carefully
designed installation accessories, these unique tools make installation easier and faster compared
totraditionalmethods,whilstbuildingcondenceinaright‑rst‑timeinstallation.

16 FORTiS-N Functional Safety enclosed encoder system – original instructions
Item Description
FORTiS-NFS encoder unit The FORTiS-N FS enclosed encoder unit
18mm readhead setting shim Plastic shim to be used as an installation aid
Air connection tting To enable connection to one of the encoder air purge inlets
Cable connection wrench Used for securely connecting the encoder cable to the readhead
Alignment brackets
Two brackets to secure the readhead during transit and set the correct readhead alignment
during installation
IMPORTANT: Retain until installation is complete
Serrated washers 2×M8serratedwashersformountinganextrusionwithstandardendcaps
Serrated washers 2×M4serratedwashersformountingthereadheadtothemachineslideway
FORTiS-N FS quality inspection
certicate Certiesspecicencoderperformanceandprovidestraceability
Yellow Functional Safety card Shows the web address for accessing the installation guide
10 Parts list
10.1 Included in the box
Siemens DRIVE-CLiQ interface Included with Siemens-only versions of FORTiS (see section 16.4 on page 44)

17www.renishaw.com
10.2 Not included / required tools
Item Description
6mm torque wrench To tighten the extrusion mounting screws
3mm torque wrench To tighten the readhead mounting screws
1.5mm hex key Air bung removal (only if air purge is required)
3mm hex key For locking the mounting aid
M8 screws 2×M8×1.25screwslength≥20mmformountingtheextrusion
M4 screws 2×M4×0.7screwslength≥20mmformountingthereadhead
Loctite 243 All fastenings (except air bung and cable connection) should be secured with Loctite 243
Loctite 222 If an air bung requires replacement or repositioning it should be secured with Loctite 222.
The cable connector should also be secured with Loctite 222.

18 FORTiS-N Functional Safety enclosed encoder system – original instructions
10.3.1 Mounting aid
Optional installation aid to assist with mounting the readhead to a machine slideway that has more
than one degree of freedom (see section 15.5 on page 35).
10.3.2 Mounting spar
Formeasuringlengthsgreaterthan620mmRenishawrecommendstheuseofamountingspar
(see section 15.2 on page 30).
(Renishaw part no. A-9768-3586)
10.3 Optional extras 10.4 Cable options (cables not included)
Further information relating to cables for the FORTiS encoder range can be found in the data sheet
Cables for FORTiS absolute encoders (Renishaw part no. L-9517-0069). This can be downloaded
from our website www.renishaw.com/fortisdownloads and is also available from your local
Renishaw representative.
Item Description
Encoder cable
type A
OD:4.7mm,28AWG,7core,singlescreen,black
jacket
Lengthoptions:0.5m,1m,3m,6m,9m
Encoder cable
type B
OD:6.3mm,23AWG,6core(3×twistedpairs),
single screen, green jacket
Lengthoptions:0.5m,1m,3m,6m,9m
Encoder cable
type D
Armoured:OD10mm,28AWG,7core
Lengthoptions:1m,3m,6m,9m
Extension
cable type B
OD:6.3mm,23AWG,6core(3×twistedpairs),
single screen, green jacket
Lengthoptions:1m,3m,6m,9m,15m,20m
Extension
cable type C
OD:7.8mm,2×20AWG(power),4×23AWG
(signal),2×28AWG(sense),singlescreen,green
jacket
Unterminatedlengthsavailableupto100m
10.4.1 FORTiS connector
All encoder cables include a custom FORTiS
connector that connects to the readhead. The
connector is covered with a protective cap with
an integrated clip; this clip can be used to assist
with cable routing.

19www.renishaw.com
11 Storage and handling
95% relative humidity (non-condensing)
to IEC60068-2-78
Storage temperature
−20ºCto+70ºC
Operating temperature
0ºCto+50ºC
IMPORTANT: Handle carefully to avoid damage to the location faces when unpacking and installing.
Handling instructions

20 FORTiS-N Functional Safety enclosed encoder system – original instructions
12 Installation drawings
12.1 Mounting surface preparation
Toensurecorrectoperation,themountingsurfaceshouldbepreparedasfollows:
• surfaceatnessrequirementof0.05mm/m
• surface should be free of paint and burrs
• refer to installation drawing for required mounting hole positions (see section 12.5 on page 22).
To further simplify and help reduce installation time, it is recommended that the machine axis to
which the encoder is to be mounted is prepared with a datum edge or aligned dowel pins to help
locate the edge of the extrusion and ensure parallelism to the axis of motion.
Dimensions and tolerances in mm
Dimensions and tolerances in mm
12.2 Datum location edge or dowel pins
– standard end caps
* M4 for short end cap version.
>32
>13
>96
M4
0.05
M8 (M4*)
>ML+138(*>ML+105)
>5.5 >5.5
R1 max. Machine edge
mounting
B B
// //
// //
X X
B B
0.1 0.1
0.1 0.1
Alignment pin
KEY
X = Machine guideway/axis datum
NOTES:
1. Side elevations show alternative mounting orientations.
2. Alignment pin and machine edge mounting options to mate directly to the top face of the
extrusion.