ABB MKey RFID Series User manual

2TLC010088M0201 Rev.A PRODUCT MANUAL
new.abb.com/low-voltage/products/safety-products
—
SAFETY PRODUCTS
RFID dual interlock safety switch with
guard locking
MKey RFID-series
Product Manual

2TLC010088M0201 Rev.A 2
Read and understand this document
Please read and understand this document before using the products. Please
consult ABB with any questions or comments.
Suitability for use
ABB shall not be responsible for conformity with any standards, codes, or
regulations that apply to the combination of products in the customer’s
application or use of the product. Third party certificates for the products are
available at https://new.abb.com/low-voltage/products/safety-products. This
information by itself is not sufficient for a complete determination of the
suitability of the products in combination with the end product, machine, system,
or other application or use.
The following are some examples of applications for which particular attention
must be given. This is not intended to be an exhaustive list of all possible uses of
the products, nor is it intended to imply that the uses listed may be suitable for
the products:
•Outdoor use, uses involving potential chemical contamination or electrical
interference, or conditions or uses not described in this document.
•Nuclear energy control systems, combustion systems, railroad systems,
aviation systems, medical equipment, amusement machines, vehicles, and
installations subject to separate industry or government regulations.
•Systems, machines, and equipment that could present a risk to life or
property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO
LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS
BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE ABB PRODUCT IS
PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL
EQUIPMENT OR SYSTEM.
Descriptions and examples show how the product works and can be used. It does
not mean that it fulfils the requirements for all types of machines and processes.
The buyer/user is responsible for installing and using the product according to
applicable standards and regulations. We reserve the right to make changes to the
product and the documentation without prior notice.

2TLC010088M0201 Rev. A 3
Table of Contents
1Introduction....................................................................................................................... 4
Scope........................................................................................................................................................ 4
Audience................................................................................................................................................... 4
Prerequisites............................................................................................................................................ 4
Special notes............................................................................................................................................ 4
2Overview ............................................................................................................................5
General description................................................................................................................................. 5
Safety regulations ................................................................................................................................... 5
Function description............................................................................................................................... 6
3Connections.......................................................................................................................7
4Installation and maintenance...........................................................................................8
Installation ............................................................................................................................................... 8
RFID code teach-in procedure................................................................................................................ 9
Maintenance ............................................................................................................................................ 9
Minimum safety distance ..................................................................................................................... 10
5Functions ......................................................................................................................... 11
Manually unlock function (auxiliary release) ....................................................................................... 11
Escape release ....................................................................................................................................... 11
LED Indicator lights............................................................................................................................... 11
6Disassembly and disposal .............................................................................................. 12
Disassembly........................................................................................................................................... 12
Disposal.................................................................................................................................................. 12
7Model overview ............................................................................................................... 13
Actuators................................................................................................................................................ 13
Accessories ............................................................................................................................................ 14
Pilot devices........................................................................................................................................... 14
Dimensions ............................................................................................................................................ 15
8Technical data .................................................................................................................22
9Declaration of conformity.............................................................................................. 25

2TLC010088M0201 Rev.A 4
1Introduction
Scope
The purpose of these instructions is to describe the dual interlock safety switches with guard
locking, the MKey RFID -series and to provide the necessary information required for assembly,
installation, checks and adjustments after installation, and maintenance. The instructions also
include information necessary to connect MKey RFID to a safety circuit.
Audience
This document is intended for authorized personnel.
Prerequisites
It is assumed that the reader of this document has knowledge of the following:
•Basic knowledge of ABB safety products.
•Knowledge of safety devices and safety locks.
•Knowledge of machine safety.
Special notes
Pay attention to special notes in the document:
Warning!
Risk of severe personal injury!
An instruction or procedure which, if not carried out correctly, may result in injury
to the technician or other personnel.
Caution!
Risk of damage
to the equipment!
An instruction or procedure which, if not carried out correctly, may damage the
equipment.
Note!
Important or explanatory information.

2TLC010088M0201 Rev. A 5
2Overview
General description
MKey RFID interlock switches are designed to provide position interlock detection for moving
guards. It is designed to fit the leading edge of sliding, hinged, or lift off machine guards. The
actuator is fitted to the moving part of the guard and is aligned to the switch entry aperture. The
possibility to lock the switch in the protective position prevents unwanted access to machinery
until hazardous operations have ceased.
The locking is useful when applications include:
•Processes which cannot be interrupted, such as welding.
•Machinery with a long stopping procedure, such as paper machinery that requires a long
braking operation.
•Prevention of unauthorized access to a particular area.
Safety regulations
Warning!
Carefully read through this entire manual before using the device.
The devices shall be installed by a trained electrician following the local standards and legal
regulations.
Failure to comply with instructions, operation that is not in accordance with the use prescribed in
these instructions, improper installation or handling of the device can affect the safety of people
and the plant.
For installation and prescribed use of the product, the special notes in the instructions must be
carefully observed and the technical standards relevant to the application must be considered.
In case of failure to comply with the instructions or standards, especially when tampering with
and/or modifying the product, any liability is excluded.

2TLC010088M0201 Rev.A 6
Function description
Safety interlock switches with guard locking are designed to fit to the leading edge of sliding or
hinged guard doors to provide positively operated switching and a tamper resistant key
mechanism. They are designed to provide robust position interlock detection and to keep moving
guards closed. The switch is rigidly mounted to the frame of the guard or machine. The dual
actuator is fitted to the moving part of the guard, and is aligned to the switch entry aperture,
placed on the frame of the guard. The dual actuator profile is designed to match a cam mechanism
within the switch head. The actuator also contains an RFID tag. When both the mechanical key and
the RFID tag is evaluated, it provides a positively operated not easily defeatable dual interlock
switch. The machine can be started when the guard is closed, the dual actuator inserted in the
switch and the switch is locked. The guard door can be opened when the solenoid releases the
lock.
The MKey RFID is fitted with a spring lock. The locking mechanism moves into the locked position
directly when the door is closed, and the dual actuator key is pushed into the switch. The actuator
key can then only be released, and the gate opened, by supplying operational voltage to the
solenoid (terminals S+ and 0 V DC).
The MKey RFID has double OSSD outputs controlled by means of the dual actuator key and the
locking mechanism. The dual actuator key is designed to prevent tampering with tools, magnets,
or similar objects.
To achieve the highest safety level in connection with the machine control system, it is
recommended that the MKey RFID is monitored by an appropriate ABB Electrification safety relay
or safety PLC.
It is easy to obtain the highest level of safety for the electrical part with the dual interlock actuator
and the two OSSD outputs, but an ABB bolt- or rotary-handle accessory for MKey RFID is
recommended to meet the mechanical requirements of relevant safety standards.
The two inputs- and two OSSD-outputs can be used to connect OSSD devices in series and still
maintain the highest possible safety level according to relevant standards.
Warning!
Application consideration must be given to the fixing of the actuator which has to be in a way that
prevents disassembly by easy means.
The head can be set in four positions, thus providing the safety device with eight different
operation positions. The leading edges of the actuator key are reinforced and beveled to guide it
properly into the key entry. The safety switch is designed to have a high holding force. MKey RFID
has two types of actuators as options. A standard actuator key, or a flexible actuator key. The
actuator must be ordered separately unless a rotary handle or sliding bolt is used.
Hinged guard
Sliding guard

2TLC010088M0201 Rev. A 7
3Connections
See “Installation and Maintenance” for more information regarding installation.
Connections
MKey…RF & MKey…RFQC – Dual interlock safety switch with guard lock internal schematic.

2TLC010088M0201 Rev.A 8
4Installation and maintenance
Installation
1. The installation of all ABB Electrification safety dual interlock switches must be done in
accordance with a risk assessment for the individual application. Installation must only be
carried out by competent personnel and in accordance with these instructions.
2. M5 mounting bolts must be used to fix the switch and actuator; the tightening torque to
ensure reliable fixing is 4.0 Nm. To prevent loosening of the switch after installation, always fix
the M5 mounting bolts with a thread-locking compound or secure using self-locking nuts.
Tightening torque for the lid screws, conduit entry plugs and cable glands must be 1.5 Nm to
ensure IP seal.
Only use the correct size gland for the conduit entry and cable outside diameter.
Tightening torque for the connection terminal screws is 0.7 Nm, max conductor size is 1,0 mm2.
The switch head position can be selected by removing the actuator, loosening the four head
bolts, and then rotating the head to the position required. Re-tighten the head bolts and then
check actuator insertion and withdrawal.
Tightening torque for the head bolts is 1.5 Nm.
Do not mount adjacent actuators or switches closer than 100 mm.
3. Always fit a mechanical stop to a guard used without a slide bolt or rotary handle
accessory to prevent damage to the front of the switch.
Set the actuator gap to 3 mm when the guard is closed and against the stop (see
illustration).
Use alignment guides to ensure that the actuator enters the switch without
interfering with the sides of the aperture.
Ensure access to at least one of the manual release points.
Always fit the aperture plug to the unused entry aperture to prevent debris entering the switch
mechanism.
Caution! Make sure the Manual unlock function screw is in “Locked” position before putting
the cover back on.
4. After installation check operation of all control circuits and the locking function. For
applications with a run-down time after turning off power, ensure that the correct time delay
has elapsed before energizing the solenoid.
Warning! All the safety functions must be tested before starting up the system.
Note: 8 actuator entry positions
rotatable head

2TLC010088M0201 Rev. A 9
RFID code teach-in procedure
The RFID code is taught after the actuator and switch has been mounted and cables connected
during installation. Follow the below step-by-step instruction.
1. Power off, insert new actuator.
2. Power on, each red LED on in sequence (LEDs chase across the switch).
3. Power off.
4. Power on, all LEDs flash red together (all on, all off).
5. Power off.
6. Power on, new tag is now paired with the MKey RFID.
Record any RFID codes as required by factory rules or with reference to any risk
assessment for the application.
The risk assessment for the application should include the risk of spare actuators. Spare
actuators should not be readily available and must be securely controlled.
The RFID code can be re-taught a maximum of five times for a MKey RFID switch.
Maintenance
The recommendations below are general, and the frequency of the checks can be adapted to suit
the history of use and the environment.
Every month:Check correct operation of all circuits. If the actuator shows signs of bending or the
switch head housing displays mechanical damage, then remove and replace.
Every 6 months: Isolate power and remove cover. Check screw terminal tightness and check for
signs of moisture ingress.
Warning! The safety functions and the mechanics shall be tested regularly, at least once
every year for PL d / SIL 2, or once per month for PL e / SIL 3 according to ISO 13849 / IEC
62061, to confirm that all the safety functions are working properly.
Warning! In case of breakdown or damage to the product, contact the nearest ABB
Electrification Service Office or reseller. Do not try to repair the product yourself since it
may accidentally cause permanent damage to the product, impairing the safety of the
device which in turn could lead to serious injury to personnel.
Caution! ABB Electrification will not accept responsibility for failure of the switch functions
if the installation and maintenance requirements shown in this sheet are not implemented.
These requirements form part of the product warranty.
Caution! The switch solenoid is rated for continuous duty, and temperature rise will occur
if left permanently energised. The temperature will not affect performance of the switch
function, life time or damage the housing. As a precaution it is always advised to limit the
energised time of the solenoid and where possible and avoid mounting on sensitive
surfaces (metal preferred).

2TLC010088M0201 Rev.A 10
Minimum safety distance
When using interlocking guards without guard locking to safeguard a hazard zone, the minimum
allowed safety distance between the guarded opening and the hazardous machine must be
calculated. To ensure that the hazardous machine motion will be stopped before it can be reached,
the minimum safety distance is calculated according to EN ISO 13855 (“Positioning of safeguards
with respect to the approach speeds of parts of the human body”).
The minimum safety distance is calculated according to the formula:
S = (K x T) + C
Where:
S= minimum safety distance (mm)
K= approach speed of a human body; 1600 mm/s
T= the total time from opening of the guard until the hazardous machine movement has stopped,
i.e., including control system reaction times and other delays (s)
C= a safety distance taken from Table 4 or Table 5 of EN ISO 13857:2008, if it is possible to push
fingers or a hand through the opening towards the hazard before a stop signal is generated
Note: In some cases, T might be reduced by the opening time of the guard until the opening size
permits access of the relevant parts of the body. Refer to EN ISO 13855 for further details and EN
ISO 13857 for specified values.

2TLC010088M0201 Rev. A 11
5Functions
Manually unlock function (auxiliary release)
The manual unlock function (auxiliary release according to EN ISO 14119) is achieved by using a tool
and is to be used in exceptional circumstances. The release can be protected by use of a tamper
coating to prevent unintended operation. If operated, this tamper protection is damaged and
must be restored to ensure protection.
For the stainless-steel versions, MKey8ZRF…, there is a special tool, please see accessories.
Escape release
Where the Risk Assessment for the application permits, non-latching escape release versions of
the MKey RFID series enable quick release of the switch lock in case of emergency. The switch can
be mounted such that access to the release button is available from inside the active guard area.
Pressing and holding the release button will release the lock mechanism and open the lock
monitoring contacts, whilst the guard can be pushed open. Measures should be taken to reduce
the risk of improper activation.
LED Indicator lights
The MKey RFID switch is fitted with four LED indicator lights as follows.
Note:Top or side manual
release points
GUARD
Guard closed and locked
Steady green
Guard closed and unlocked
Flashing green
Code incorrect
Flashing red
Guard open
Steady red
INPUT
Safety inputs on
Steady green
Single safety input missing
Flashing green
Safety inputs off
Off
Internal fault
Steady red
OUTPUT
Safety outputs on
Steady green
Safety outputs off
Off
External fault
Flashing red
SOLENOID
Solenoid energised
Steady red
Solenoid de-energised
Off

2TLC010088M0201 Rev.A 12
6Disassembly and disposal
Disassembly
The MKey RFID dual interlock device with guard locking must be disassembled in its de-energised
state, no power.
Disposal
The MKey RFID dual interlock device with guard locking must be disposed of in accordance with
the national legislation and regulation.

2TLC010088M0201 Rev. A 13
7Model overview
Type Product ID Description
MKey9RF 2TLA050007R0602 MKey9RF - No actuator - Plastic with M20 entry
MKey9RFQC 2TLA050007R2602 MKey9RFQC - No actuator - Plastic with M12-quick-
connect
MKey8RF 2TLA050011R0612 MKey8RF - No actuator - Die cast with M20 entry
MKey8RFQC 2TLA050011R2612 MKey8RFQC - No actuator - Die cast with M12-quick-
connect
MKey8ZRF 2TLA050011R0622 MKey8ZRF - No actuator - Stainless steel with M20 entry
MKey8ZRFQC 2TLA050011R2622 MKey8ZRFQC - No actuator - Stainless steel with M12-
quick-connect
MKey10RF 2TLA050012R0612 MKey10RF - No actuator - Die cast with M20 entry
MKey10RFER 2TLA050012R0652 MKey10RFER - No actuator - Die cast with M20 entry,
Escape Release
Actuators
All keys are in stainless steel.
Type Product ID Description
1 2TLA050040R0240 Standard RFID key for MKey8RF, MKey8RFZ,
MKey9RF, MKey10RF
2 2TLA050040R0241 Flexible RFID key for MKey8RF, MKey8RFZ, MKey9RF,
MKey10RF
1
2

2TLC010088M0201 Rev.A 14
Accessories
Type Product ID Description
Gland 2TLA050040R0002 Stainless steel cable gland M20 x 1.5
Tool 2TLA050040R0400 MKey8ZRF… Manual release Installation tool
Bolt 2TLA050040R0503 Slide bolt left for MKey8RF and MKey9RF
Bolt 2TLA050040R0504 Slide bolt right for MKey8RF and MKey9RF
Bolt 2TLA050040R0505 Slide bolt left MKey10RF & MKey10RFER
Bolt 2TLA050040R0506 Slide bolt right MKey10RF & MKey10RFER
Rear Handle 2TLA050040R0510 Handle for inside operation for Slide Bolt
Spring Catch 2TLA050040R0511 Spring loaded catch for Slide Bolt
Rotary handle 2TLA050040R0600 Die-cast handle left MKey8RF & MKey9RF
Rotary handle 2TLA050040R0601 Die-cast handle right MKey8RF & MKey9RF
Rotary handle 2TLA050040R0602 Stainless steel handle left MKey8/9RFZ
Rotary handle 2TLA050040R0603 Stainless steel handle right MKey8/9RFZ
Rotary handle 2TLA050040R0604 Die-cast handle left MKey10/ER
Rotary handle 2TLA050040R0605 Die-cast handle right MKey10/ER
Rotary handle 2TLA050040R0610 Die-cast rear escape handle LEFT
Rotary handle 2TLA050040R0611 Stainless steel rear escape handle LEFT
Rotary handle 2TLA050040R0612 Die-cast rear escape handle RIGHT
Rotary handle 2TLA050040R0613 Stainless steel rear escape handle RIGHT
Pilot devices
For the MKey10RF… 22 mm push buttons, emergency stop buttons and blanking plugs are ordered
separately. More information can be found at ABB Safety Products - Pilot devices
http://new.abb.com/low-voltage/products/pilot-devices

2TLC010088M0201 Rev. A 15
Dimensions
MKey9RF
MKey8RF

2TLC010088M0201 Rev.A 16
MKey8ZRF
MKey10RF / MKey10RFER

2TLC010088M0201 Rev. A 17
Actuators
MKey8(Z)RF & MKey9RF Die-cast & Stainless steel handle (same for Left and Right versions)
Standard
Flexible

2TLC010088M0201 Rev.A 18
MKey10RF(ER) Die-cast handle (same for Left and Right versions)

2TLC010088M0201 Rev. A 19
Rear escape handle Die-cast & Stainless steel (same for Left and Right versions)
Slide bolt MKey8RF & MKey9RF (same for Left and Right versions)

2TLC010088M0201 Rev.A 20
Slilde bolt MKey10RF(ER) (same for Left and Right versions)