Halma FORTRESS Alfred User manual

1
Operating Instructions: Alfred Solenoid Controlled Guard Lock
Description
The Alfred Solenoid Controlled Guard Lock is a robust, heavy duty Solenoid
Controlled Guard Locking Device which can be used to lock and secure a machine
guarding application and/or provide an interlocking function to a machine.
A full Alfred Solenoid Controlled Guard Lock product can be congured from a
selection of Actuator Modules, Head Modules and can include up to three Key
Adaptors all mounted above an Ex rated Solenoid Module.
The Ex rated Solenoid Module at the base of an Alfred Solenoid Controlled Guard
Lock product contains dual safety circuits and a monitoring circuit which are linked
to the operation and function of the assembled Head Module and / or Key Adaptor
modules.
The Ex rated Solenoid Module is available in both Power-To-Unlock and Power-
To-Lock versions and with and without Safety Circuit monitoring on the Solenoid
locking or unlocking action. See Options and Ordering Information section for
details.
The Alfred Solenoid Controlled Guard Lock’s tough Stainless-Steel enclosures
and IP67 and IP69 sealing protection make it perfect for any heavy duty or regular
application.
As consistent with the rest of the Alfred product range, the Alfred Solenoid
Controlled Guard Lock is rated for use in Hazardous Locations and Explosive
Atmospheres (See ATEX, IECEx and HazLoc section below for full product ratings,
marking and detail).
Approvals and Certications
Important:
This product is designed for use according to the installation and operating instructions enclosed. It must be installed
by competent and qualied personnel who have read and understood the whole of this document prior to commencing
installation. If the equipment is used in a manner not specied by the manufacturer, the protection provided by the equipment
may be impaired. Any modication to or deviation from these instructions invalidates all warranties. Fortress Interlocks Ltd
accepts no liability whatsoever for any situation arising from misuse or misapplication of this product.
This product is not to be used as a Mains Isolator or Emergency Stop. The unit is a component to be added to a permanent
electrical installation meeting the requirements of the applicable IEC/EN standards. This product meets the requirements of
the standard IEC/ EN 61010-1:2001safety requirements for electrical equipment for measurement control and laboratory use
- Part 1 General Requirements.
The voltages used within the Alfred Ex Rated Solenoid Module circuits must all be of the same type. i.e. ALL Hazardous Live
or ALL Machine Extra Low Voltage. It is vitally important that the correct version of this unit is selected.
DO NOT LEAVE AUXILIARY RELEASE/ MANUAL OVERRIDE KEY IN PLACE! DO NOT REMOVE LID WITH OVERRIDE
KEY IN PLACE!
Always keep Manual Override Key in a secure place, under management control, as it allows access to areas that
may have a residual hazard and may result in incorrect operation of some devices.
BEWARE OF INTENTIONAL MISUSE CAUSED BY OPERATORS WANTING TO BYPASS SAFETY SYSTEMS. THE
INSTALLER SHOULD ASSESS THE RISKS AND MITIGATE AGAINST THEM.
IF YOU HAVE ANY QUESTIONS OR QUERIES OF ANY NATURE WHATSOEVER PLEASE CONTACT THE SUPPLIER
WHO WILL BE PLEASED TO ADVISE AND ASSIST.
APPROVALS PENDING

ATEX, IECEx and HazLoc Ratings and Classications
The Alfred Solenoid Controlled Guard Lock is certied and rated for use within ATEX, IECEx and HazLoc environments of the
following ratings;
Approvals
IECEx BAS 20.0080X BAS21UKEX0009X
SGS20ATEX0171X SGSNA/21/CA/00001X
Specic Conditions of Use
1. It is the responsibility of the installation engineer to ensure that a suitable IECEx/ATEX/UKEX equipment certied cable
gland is installed in accordance with IEC60079-14, which meets the IP rating of IP67, to ensure that this is maintained on
the enclosure. See Electrical Connection section for further detail.
2. Flameproof Joints of the Ex Rated Solenoid Module enclosure are not intended to be repaired.
3. If required, any replacement Lid assembly fasteners must be identical to those as supplied by Fortress and as detailed in
the Lid Assembly Requirements section of this document. The specication of these are M8 x 14mm, property class of
A2-70 with a minimum yield strength of 700 MPa to ISO 3506, ISO 262, ISO 965-1, and ISO 965-3.
4. When used for a Group III application, the adhesive labels and non-metallic coatings may store electrostatic charge and
become a source of ignition. Guidance on protection against the risk of ignition due to electrostatic discharge can be found
in IEC TS 60079-32-1. Cleaning of the adhesive labels and non-metallic coatings should only be done with a damp cloth.
WARNING – Do not open device when an explosive atmosphere is present!
WARNING – Do not open device when energised!
The purchaser or Installation Engineer should be aware of any External effects or Aggressive substances that the
Alfred Solenoid Controlled Guard Lock may be exposed to and should inform Fortress accordingly.
Symbol Description
2
Operating Instructions: Alfred Solenoid Controlled Guard Lock
ATEX and IECEx product ratings;
(as per IEC 60079-0)
II 2 G Ex db h IIC T6 Gb
II 2 D Ex h tb IIIC T85°C Db IP67
Tamb -20°C to +60°C
North American HazLoc product ratings;
(as per NEC 500, CEC Annex J)
Class I, Division 2, Groups A,B,C,D T4
Class II, Division 2, Groups F,G T110˚C
Class III, Division 2
(as per NEC 505, CEC 18)
Class I, Zone 1, AEx db IIC T4 Gb
Zone 21, AEx tb IIIC T110°C Db IP67
Warning Electricity Direct Opening Action Locking monitoring of
locking elements

Options & Ordering Information
The Alfred Solenoid Controlled Guard Lock product can be congured from a selection of Actuator Modules, Head Modules
and can include up to three Key Adaptors all mounted above an Ex rated Solenoid Module.
Each unique Alfred Solenoid Controlled Guard Lock product conguration will have its own unique part number in the format
below. Part Numbers can be generated via Fortress’ online product congurators or by speaking to your local Fortress
Channel partner.
Note: All Alfred Solenoid Controlled Guard Lock products will have the EXP part number prex.
Operating Instructions: Alfred Solenoid Controlled Guard Lock
3
Actuator Modules
Description Part No. Handing
Tongue Assembly EXPTA* Front / Left / Rear / Right
• Vertical misalignment of +/-12mm.
• Minimum hinged guard operating radius: 750mm.
• Can be tted in two positions at 90˚ to either hinged or sliding door/gates.
Description Part No. Handing
Hinged Handle Assembly EXPHL1 Front
• Integrated handle for guarding applications with hinged door/gates.
• Vertical misalignment of +/-12mm.
• 6mm overtravel allowance.
• Minimum hinged guard operating radius: 250mm.
Description Part No. Handing
Standard Slidebar Assembly EXPTN* Left / Right
• Slidebars have a second operating action and are suitable for hinged or sliding
guards. No hinged guard radius limit is present and the risk of impacts to
interlock on large guards is removed.
• Built in lock-out facility to accommodate a maximum of 4 padlocks with up to
8mm diameter shackles.
Description Part No. Handing
Sprung Slidebar EXPTS* Left / Right
• Standard Slidebar with spring mechanism to extend Actuator when in knob has
been lifted.
* Part Number 1, 2, 3 or 4 here indicates Actuator and Head Orientation, See Figure 1 below.
EXP - - - - - - - - - - - - - - - - - - - -
Actuator Module Head Module Key Adaptor
Module(s)
Up to 3 total
Ex Rated Solenoid
Module

Operating Instructions: Alfred Solenoid Controlled Guard Lock
4
Figure 1: Actuator and Head Orientation
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.50 SHEET: 1 OF 3
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
ALFRED SAFETY SWITCH OPERATING INSTRUCTIONS IMAGES DWG NO: SD-00033
2 - LEFTHAND FACING
DIRECTION OF
ACTUATOR
ENTRY
1 - FRONT FACING HEAD 3 - REAR FACING 4 - RIGHTHAND FACING
Head Modules
Description Part No. Handing
Stainless Steel Slimline Head EXPS6 Front / Left / Rear / Right
• Full Stainless-Steel construction.
Description Part No.
Stainless Steel Slimline Head with Additional
Padlockable Lock-Out plug EXPS8
• Full Stainless-Steel construction.
• Lock-Out suitable for up to three Ø8mm padlocks to prevent Actuator insertion.
1 - FRONT FACING HEAD 2 - LEFTHAND FACING 3 - REAR FACING 4 - RIGHTHAND FACING
DIRECTION OF
ACTUATOR
ENTRY

Operating Instructions: Alfred Solenoid Controlled Guard Lock
5
Options & Ordering Information
Key Adaptor Modules
Key Adaptor Modules are an optional, congurable attachment for the Alfred Solenoid Controlled Guard Lock. They can be
used to provide the function of an access lock to prevent unauthorised access to a hazardous area, or alternatively provide a
personnel key function to prevent unexpected start up. Key Adaptors are available in three variations;
Access Key Adaptors
Used to prevent unauthorised personnel from opening a guard and stopping a machine. Ideally suited for authorised access
only, or linked access to other machinery that is required to be isolated before access.
Safety Key Adaptors
Used to provide a personnel key function to prevent unexpected machine start up.
Extracted Key Adaptor
Also used as a personnel key to prevent unexpected machine start up but include a forced extraction before machine
guarding can be opened.
Key Adaptor Modules
Description Part No.
Access Key Adaptor AKL2Z
• Standard lock type, standard dustcover.
Description Part No.
Access Key Adaptor AKL7Z
• Master lock type, standard dustcover.
Description Part No.
Access Key Adaptor AKL3Z
• Standard lock type, padlockable dustcover.
Description Part No.
Access Key Adaptor AKL8Z
• Master lock type, padlockable dustcover.
Description Part No.
Safety Key Adaptor SKL2Z
• Standard lock type, standard dustcover.
Description Part No.
Safety Key Adaptor SKL7Z
• Master lock type, standard dustcover.

Operating Instructions: Alfred Solenoid Controlled Guard Lock
6
Description Part No.
Safety Key Adaptor SKL3Z
• Standard lock type, padlockable dustcover.
Description Part No.
Safety Key Adaptor SKL8Z
• Master lock type, padlockable dustcover.
Description Part No.
Extracted Key Adaptor EKL2
• Standard lock type, standard dustcover.
Description Part No.
Extracted Key Adaptor EKL7
• Master lock type, standard dustcover.
Description Part No.
Extracted Key Adaptor EKL3
• Standard lock type, padlockable dustcover.
Description Part No.
Extracted Key Adaptor EKL8
• Master lock type, padlockable dustcover.
* Part number 1, 2 or 3 here indicates quantity of Access Key or Safety Key adaptor modules selected. Note; Up to 3 Key Adaptors total can be congured
into a full Alfred Solenoid Controlled Guard Lock product.
Note: Keys sold separately.

Operating Instructions: Alfred Solenoid Controlled Guard Lock
7
Options & Ordering Information
Ex Rated Solenoid Module
Solenoid Controlled locking Module to add locking control to either a guarded area or interlocked Key.
The Ex Rated Solenoid Module is available in both Power-To-Unlock and Power-To-Lock versions and with and without
Safety Circuit monitoring on the Solenoid locking or unlocking action. See Functioning section for more detail.
All Ex Rated Solenoid Modules are constructed in full-stainless steel ameproof enclosures and sealed to IP67 and IP69.
Ex Rated Solenoid Modules
Description Part No.
Power-to-Unlock, Safety-on-Guard-Locking EXPXL411
• Power-to-Unlock device.
• Dual Safety Circuits change state on Unlocking/Locking of Solenoid
mechanism.
• Monitoring circuit on Solenoid action provides feedback when product is in its
unlocked stated.
• Monitoring circuit on the Actuator and Head and/or Key Adaptor operation
provide feedback on the opening of a guarded area or operation of an
interlocked key.
• Auxiliary Release function included to override Solenoid locking during
commissioning or in the event of a power failure.
Description Part No.
Power-to-Unlock, Safety-on-Guard (un-monitored solenoid) EXPXL416
• Power-to-Unlock device.
• Dual Safety Circuits change state on opening/closing of a guarded area or
operation of an interlocked key.
• Monitoring circuit on Solenoid action provides feedback when product is in its
unlocked stated.
• Monitoring circuit on the Actuator and Head and/or Key Adaptor operation
provide feedback on the opening of a guarded area or operation of an
interlocked key.
• Auxiliary Release function included to override Solenoid locking during
commissioning or in the event of a power failure.
Description Part No.
Power-to-Lock, Safety-on-Guard-Locking EXPXL471
• Power-to-Lock device.
• Dual Safety Circuits change state on Unlocking/Locking of Solenoid mechanism.
• Monitoring circuit on Solenoid action provides feedback when product is in its
unlocked stated.
• Monitoring circuit on the Actuator and Head and/or Key Adaptor operation
provide feedback on the opening of a guarded area or operation of an
interlocked key.
Description Part No.
Power-to-Lock, Safety-on-Guard (un-monitored solenoid) EXPXL461
• Power-to-Lock device.
• Dual Safety Circuits change state on opening/closing of a guarded area or
operation of an interlocked key.
• Monitoring circuit on Solenoid action provides feedback when product is in its
unlocked stated.
• Monitoring circuit on the Actuator and Head and/or Key Adaptor operation
provide feedback on the opening of a guarded area or operation of an
interlocked key.

Operating Instructions: Alfred Solenoid Controlled Guard Lock
8
Technical Specication
Actuator and
Head
Modules
Key Adaptor
Modules
Safety-on-Guard-
Locking type
Solenoid Modules
XL411 & XL471
Safety-on-Guard type
Solenoid Modules
XL416 & XL461
Construction Materials 316 Stainless Steel and
Stainless Steel to BS3146-2:1975 (ANC4B)
Mechanical Life 1,000,000 operations
Holding Force, FZH 7kN
Maximum Holding Force, F1MAX 14kN
Operating Force (unlocked unit,
without Key Adaptors) XX N N/A
Key Operation Force N/A XX N N/A
Electrical Specication N/A AC 50 / 60Hz / DC
Utilisation Category N/A AC 15 or DC 13
Maximum Switch Current N/A DC13: Le=0.5A, Ue=24V DC AC15: Le=1A,
Ue=24V AC
Minimum Switch Current N/A 1mA at 5V DC
Maximum Switching Voltage N/A 24V AC/DC
Switch Conformance N/A DIN VDE 0060 Part 206 & IEC 947-5-1
Switch Contacts on Actuator/Key
operation N/A 2NC 1NO 2NC 1NO
Switch Contacts on Solenoid
operation N/A 2NC 1NO 1NO
Safety Circuit Switching Principle N/A Positive break, dual channel
Solenoid Voltage N/A 24V DC (+/-10%)
Solenoid Power Rating N/A 350mA max @ 24V DC
Solenoid Rating (Duty Cycle) N/A 100%
Transient Overvoltages Installation N/A Category III
Cable Size N/A 28 – 12 AWG
Diagnostic Coverage (DC) 99%
λd 10%
Performance Level N/A Up to PLe PLc to PLe*
Category Up to Cat.4
B10d 5,000,000 operations
Ingress Protection N/A IP67 & IP69
Pollution Degree (IEC 664) N/A Degree 2
Environment Indoor & Outdoor
Ambient Temperature -20˚C (-4˚F) ** to +60˚C (+140˚F)
Maximum Humidity 80%@<=31°C; 50%@40°C
Maximum Altitude 2000m
Shock and Vibration Resistance Tested in accordance with GS-ET-19_2015-05
Applicable Standards BS EN ISO 13849-1:2015, BS EN ISO 13849-2:2012, BS EN ISO 14119:2013,
BS EN IEC 60079-0:2018, BS EN 60079-1:2014, BS EN ISO 80079-36:2016
* Depending on application.
** The units will only continue to work below freezing point (0°C) where it can be guaranteed that ice will not form on or in the unit as it will cause the
mechanical parts to bind and jam.
Safety Functions Part No.
Safety Function 1 Turns mechanical movement of assembled Head module and/or Key Adaptor
module into operation of Safety Contacts. EXP … XL***
Safety Function 2 Solenoid Mechanism holds door/gate locked. EXP … XL***

Operating Instructions: Alfred Solenoid Controlled Guard Lock
9
Functionality
The Alfred Solenoid Controlled Guard Lock product can be congured from a selection of Actuators, Head modules and Key
Adaptor modules all mounted above an Ex Rated Solenoid Module.
The Ex Rated Solenoid Module provides a locking function to securely trap either the Actuator and Head mechanism and/or
an assembled Key Adaptor mechanism
In an Alfred Solenoid Controlled Guard Lock product without any Key Adaptor modules included, the Ex Rated Solenoid
Module can be used to directly lock and secure a guarded area.
In an Alfred Solenoid Controlled Guard Lock product with a Key Adaptor module included, the Ex Rated Solenoid Module
can be used to lock and trap a key operation, while the assembled Key Adaptor(s) can be sequenced to lock and secure a
guarded area.
Dual Safety Circuits within the Ex Rated Solenoid Module can be paired to a machine control and guarding system to
generate a machine-stop command on either the unlocking or opening of a guarded area or operation of an interlocked key.
• In Safety-On-Guard-Locking type Solenoid Modules (EXPXL411 & EXPXL471) the Safety Circuits will change on the
unlocking or locking of the internal Solenoid mechanism.
• In Safety-On-Guard type Solenoid Modules (EXPXL416 & EXPXL461) the Safety Circuits will change on the insertion and
extraction of the Actuator into/from the Head Module or, if Key adaptors are included, on the operation of the primary Key
Adaptor.
Alfred Solenoid Controlled Guard Lock Product with Power-to-Unlock Ex Rated Solenoid Module
(EXP - - - XL411 and EXP - - - XL416)
Closing and Locking:
• Close the Gate / Door of the guarded area to Insert the Actuator into the Head Module
Note: Some Actuators require additional operation to insert into Head Module, see specic functioning sections below.
• If Alfred product is tted with Key Adaptors, operate them into their closed or ‘machine-run’ state.
Note: Exact sequence of Key Adaptor operation can vary depending on product selection and conguration. See specic
functioning section below.
• With Solenoid de-energised, the Internal mechanism of the Power-to-Unlock Ex Rated Solenoid Module automatically
engages to lock the Head module and any Key module (if tted) placing the complete Alfred Product into its Locked state.
• Once Locked, the Safety Circuits of the Ex Rated Solenoid Module will be made / closed, the Gate Monitor Circuit will be
open / broken, and the Solenoid Monitor Circuit will be open / broken.
Unlocking:
• Energise the Solenoid.
• Internal locking mechanism dis-engages to remove locking force from the Head Module and / or Key Adaptor Module (if
tted).
• Switch status for Safety-on-Guard-Locking type Ex Rated Solenoid Module with fully Monitored Solenoid Safety
(EXPXL411);
◦Safety Circuits open / break, Solenoid Monitor Circuit makes / closes.
• Switch status for Safety-on-Guard type Ex Rated Solenoid Module with Un-Monitored Solenoid Safety (EXPXL416);
◦Safety Circuits remain closed, Solenoid Monitor Circuit makes / closes.
Opening:
• Remove the Actuator from the Head Module or operate the primary Key Module (if tted).
• Switch status for Safety-on-Guard-Locking type Solenoid Module (EXPXL411);
◦Gate Monitor Circuit makes / closes.
◦Safety Circuits remain broken, Solenoid Monitor Circuit remains closed.
• Switch status for Safety-on-Guard type Solenoid Module (EXPXL416);
◦Safety Circuits open / break, Gate Monitor Circuit makes / closes.
◦Solenoid Monitor Circuit remains closed.
Auxiliary Release Function:
During product installation and commissioning, or in the event of a power failure it may be necessary to perform a manual
Auxiliary Release operation to Unlock and Open the Ex Rated Solenoid Module.
• Use supplied Override Key to rotate and operate the centrally located Override spindle 90˚ Clockwise. (See Figure 7)
• Internal locking mechanism dis-engages to remove locking force from the Head Module and/or Key Module (if tted).
• Switch status for Safety-on-Guard-Locking type Solenoid Module (EXPXL411);
◦Safety Circuits open / break, Solenoid Monitor Circuit makes / closes.
• Switch status for Safety-on-Guard type Solenoid Module (EXPXL416);
◦Safety Circuits remain closed, Solenoid Monitor Circuit makes / closes.

10
Operating Instructions: Alfred Solenoid Controlled Guard Lock
Alfred Solenoid Controlled Guard Lock Product with Power-to-Lock Ex Rated Solenoid Module
(EXP - - - XL471 and EXP - - - XL461)
Closing:
• Close the Gate / Door of the guarded area to Insert the Actuator into the Head Module
Note: Some Actuators require additional operation to insert into Head Module, see specic functioning sections below).
• If Alfred product is tted with Key Adaptors, operate them into their closed or ‘machine-run’ state.
Note: Exact sequence of Key Adaptor operation can vary depending on product selection and conguration. See specic
functioning section below.
• Switch status for Safety-on-Guard-Locking type Ex Rated Solenoid Module with fully Monitored Solenoid Safety
(EXPXL471);
◦Gate Monitor Circuit opens / breaks.
◦Safety Circuits remain broken, Solenoid Monitor Circuit remains closed.
• Switch status for Safety-on-Guard type Ex Rated Solenoid Module with Un-Monitored Solenoid Safety (EXPXL461);
◦Safety Circuits make / close, Gate Monitor Circuit opens / breaks.
◦Solenoid Monitor Circuit remains closed.
Locking:
• Energise the Solenoid to engage the internal locking mechanism within the Ex Rated Solenoid Module.
• Switch status for Safety-on-Guard-Locking type Solenoid Module (EXPXL471);
◦Safety Circuits make / close, Solenoid Monitor Circuit opens / breaks.
◦Gate Monitor Circuit remains broken.
• Switch status for Safety-on-Guard type Solenoid Module (EXPXL461);
◦Solenoid Monitor Circuit opens / breaks.
◦Safety Circuits remain closed, Gate Monitor Circuit remains broken.
Unlocking:
• De-Energise the Solenoid.
• Internal locking mechanism dis-engages to remove locking force from the Head Module and / or Key Adaptor Module (if
tted).
• Switch status for Safety-on-Guard-Locking type Solenoid Module (EXPXL471);
◦Safety Circuits open / break, Solenoid Monitor Circuit makes / closes.
◦Gate Monitor Circuit remains broken.
• Switch status for Safety-on-Guard type Solenoid Module (EXPXL461);
◦Solenoid Monitor Circuit makes / closes.
◦Safety Circuits remain closed, Gate Monitor Circuit remains broken.
Opening:
• Remove the Actuator from the Head Module or operate the primary Key Module (if tted).
• Switch status for Safety-on-Guard-Locking type Solenoid Module (EXPXL471);
◦Gate Monitor Circuit makes / closes.
◦Safety Circuits remain broken, Solenoid Monitor Circuit remains closed.
• Switch status for Safety-on-Guard type Solenoid Module (EXPXL416);
◦Safety Circuits open / break, Gate Monitor Circuit makes / closes.
◦Solenoid Monitor Circuit remains closed.
Note: There is no Auxiliary Release function on a Power-To-Lock Device.
Hinged Handle and Tongue Actuators
Closing and Opening;
• Push / Pull the Gate / Door of the guarded area in the direction parallel to the Actuators entry into the Head Module.
• No additional steps required to operate Actuator.
Slidebar Actuators
Closing:
• Close the Gate / Door of the guarded area.
• Lift the Knob casting of the Slidebar Actuator and drive the Slidebar towards the Head Module so that the Tongue portion
inserts into the Head Module.
Opening:
• Grasp the Knob casting and slide the Slidebar away from the Head Module.

Key Adaptors
Up to 3 Key Adaptors total can be congured into a full Alfred Solenoid Controlled Guard Lock product.
If multiple different Key Adaptor types are congured, Extracted style Key Adaptors will always be located closest to the Head
Module and Access style Key Adaptors will always be located closest to the Ex Rated Solenoid module.
Access Key Adaptors
In the Closed or Locked state of an Alfred Solenoid Controlled Guard Lock, an Access style Key Adaptor will be removed or
‘key-free’.
Up to 3 Access style Key Adaptors can be congured into a full Solenoid Controlled Guard Lock product.
If more than one Access style Key Adaptor is used, the primary Access Key will be the one located closest to the Head
Module. If multiple Access style Key Adaptors are used, then all other Access style Keys must be inserted and operated
before the primary Key.
Safety Key Adaptors
In the Closed or Locked state of an Alfred Solenoid Controlled Guard Lock, a Safety style Key Adaptor will be inserted and
rotated.
Up to 3 Safety style Key Adaptors can be congured into a full Solenoid Controlled Guard Lock product.
If more than one Safety style Key Adaptor is used, the primary Safety Key will be the one located closest to the Head Module.
Extracted Key Adaptors
In the Closed or Locked state of an Alfred Solenoid Controlled Guard Lock, an Extracted style Key Adaptor will be inserted
and rotated.
A maximum of 1 Extracted style Key Adaptor can be congured into a full Solenoid Controlled Guard Lock product.
An Extracted style Key Adaptor will always be located closest to the Head Module.
If Extracted style and Safety style Key Adaptors are congured together, their operation sequence will combine so that the
Extracted style Key will become the primary Safety Key.
To open a closed guarded area (after unlocking the Solenoid Module)
• The primary Access Key must be inserted and rotated clockwise. If multiple Access style Key Adaptors are used, then all
other Access Keys must be inserted and operated before the primary Access Key.
• The primary Safety Key must be rotated anti-clockwise to its ‘key-free’ position.
Note: If an Extracted style Key Adaptor is tted it must be rotated and removed.
To lock a closed guarded area (prior to locking the Solenoid Module)
• The primary Extracted or Safety Key must be inserted and rotated clockwise. If multiple Safety style Key Adaptors are used,
then all other Safety Keys must be inserted and operated before the primary Safety Key.
• The primary Access Key must be rotated anti-clockwise to its ‘key-free’ position.
Switch Statuses when used with Safety-On-Guard type Solenoid Modules
• If an Access style Key Adaptor is tted the operation of the Safety Circuits and Gate Monitor Circuit of the Ex rated Solenoid
Module will change on the operation of the primary Access Key.
• If no Access style Key Adaptor is tted the operation of the Safety Circuits and Gate Monitor Circuit of the Ex rated Solenoid
Module will change on the operation of the primary Extracted or Safety Key.
Note: Key operation does not affect Safety Circuit Status when used with Safety-On-Guard-Locking type Solenoid
Modules.
Operating Instructions: Alfred Solenoid Controlled Guard Lock
11

Figure 2: Dimensional Drawing – Alfred Solenoid Controlled Guard Lock
Figure 3: Dimensional Drawing – Alfred Solenoid Controlled Guard Lock with Key Adaptor(s)
12
Operating Instructions: Alfred Solenoid Controlled Guard Lock
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.50 SHEET: 1 OF 2
ORIGINAL SIZE DATE: 11-03-21 ISSUE: 0
ALFRED SOLENOID CONTROLLED GUARD LOCK DRAWING DWG NO: SD-00039
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.35 SHEET: 2 OF 2
ORIGINAL SIZE DATE: 11-03-21 ISSUE: 0
ALFRED SOLENOID CONTROLLED GUARD LOCK DRAWING DWG NO: SD-00039
(2 PLACES)
M8 THRU ALL
(2 PLACES)(2 PLACES)
(4 PLACES)(2 PLACES)
EXTERNAL EARTH
CONNECTOR HOLE
AUX.RELEASE /
OVERRIDE SPINDLE
(2 PLACES)
(3 PLACES)
THRU ALL
(6 PLACES)
(2 PLACES)
(2 PLACES)
DIMENSION B
(2 PLACES)
(2 PLACES)
(2 PLACES)
(4 PLACES)
EARTH POINT
DIMENSION A
AUX. RELEASE /
OVERRIDE SPINDLE
ALFRED GUARD
LOCK WITH... DIMENSION A DIMENSION B
QTY. OF KEY
ADAPTOR M8
FIXING POINTS
1 KEY ADAPTOR 335.6 mm 112.6 mm 2
2 KEY ADATORS 395.8 mm 172.8 mm 4
3 KEY ADATORS 456 mm 233 mm 6
4 KEY ADAPORS 516.2 mm 293.2 mm 8

Figure 4: Dimensional Drawing – EXPTA Actuator Assembly
Figure 5: Dimensional Drawing – EXPHL1 Actuator Assembly
Operating Instructions: Alfred Solenoid Controlled Guard Lock
13
Figure 6: Dimensional Drawing – EXPTN and EXPTS Slidebar Actuator
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.75 SHEET: 1 OF 1
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
EXPTA - ALFRED TONGUE ACTUATOR DWG NO: SD-00034
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.50 SHEET: 1 OF 1
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
EXPHL1 - ALFRED HINGED HANDLE ACTUATOR DWG NO: SD-00035
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.50 SHEET: 1 OF 1
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
EXPHL1 - ALFRED HINGED HANDLE ACTUATOR DWG NO: SD-00035
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.45 SHEET: 1 OF 1
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
EXPTN & EXPTS - ALFRED SLIDEBAR ACTUATORS DWG NO: SD-00036
(2 PLACES)
2 OFF M8 10 HOLES
(ACCESS FROM THE REAR)
2 OFF 5.5 HOLES
(ACCESS FROM THE FRONT)
SLOT
(2 PLACES)
TO TONGUE
(2 PLACES)
TO TONGUE
(2 PLACES)
MAX . EXTENSION
THRU HOLE
(4 PLACES)
(2 PLACES)
(2 PLACES)
FULL RETRACTION
SLOT WIDTH
SLOT LENGTH
AT MAX. EXTENSION

Operating Instructions: Alfred Solenoid Controlled Guard Lock
14
Mounting and Installation Instructions
Mechanical Mounting and Installation
Tools and Fixings Required
• Up to 4 x M8 screws for securing Actuator assembly.
• 1 x M8 screw for securing Head Module.
• Up to 6 x M8 screws for securing Key Adaptor assemblies.
• 4 x M8 screws for securing Ex Rated Solenoid Module.
◦All screws must be suitable length for a minimum of 10mm thread engagement.
◦All screws must be security type to prevent unauthorised removal or tampering.
◦All screws must be of type A2-70 Stainless Steel.
◦Required torque setting; 25 Nm.
• Driver suitable for securing M8 screws.
• TX40 Driver Bit (provided).
• Adhesive Threadlocker to secure mounting xings from loosening due to vibration.
◦Threadlocker must be ‘middle strength’ or greater.
Mounting
1. Locate the complete Alfred Solenoid Controlled Guard Lock product so that is in a suitable position for full
operation and functionality and is within reach for easy user operation.
2. Secure the Actuator assembly to the Door / Gate of the guarded area (See Figures 4, 5 & 6 for location of
mounting hole positions).
3. Secure the remainder of the complete Alfred Solenoid Controlled Guard Lock, including the Ex rated Solenoid
module, using M8 screws xed into the rear of the product. (See Figures 2 & 3 for location of mounting hole
positions).
4. Perform Mechanical Function tests before completing installation and commission. See Mechanical Function test
section for more details.
General mounting requirements and cautionary notes:
• Mount the complete Alfred Solenoid Controlled Guard Lock product in the correctly assembled condition.
• All mounting surfaces should be at and stable.
• The complete Alfred Solenoid Controlled Guard Lock product must be located so that all scheduled inspection and
maintenance procedures are all easily possible.
• All xing screws used to mount the complete Alfred Solenoid Controlled Guard Lock product must be permanently
prevented from removal. If mounting xings are visible, they must be secured against removal by personnel using standard
tools, manipulation and un-authorised or un-identiable removal. If mounting xings are not visible or hidden, they must be
secured against removal or loosening due to vibration. In both cases, a middle strength adhesive threadlocker is required.
Additional mounting requirements if Alfred Solenoid Controlled Guard Lock product is used for Machine
Guarding:
• The Alfred Solenoid Controlled Guard Lock product must not be used as a mechanical stop. Where applicable, precautions
must be made to ensure the door or gate of any guarded area has sufcient support and stops to prevent the impact on the
product.
• The complete machine guarding installation must conform to all relevant design, construction and installation standards and
guidelines.
• Any gap around the perimeter of the machine and guarding when under operation (Safety Outputs High) must not exceed
the limits specied in ISO 13857 & ISO 14120.
• The installation and operation of the complete Alfred Solenoid Controlled Guard Lock product must take into account the
requirements of EN ISO 14119; in particular Section 7 – Design for minimising defeat possibilities.
Lid Assembly Requirements
During electrical wiring and installation, the lid of the Ex Rated Solenoid Module needs to be removed for access. Care must
be taken during Lid dis-assembly and re-assembly in order to maintain Ingress Protection (IP) level and maintain enclosure
protection levels of ATEX and IECEx ratings.
To remove the Lid assembly from the Ex Rated Solenoid Module;
1. Remove the 10 x M8 Torx screws securing the Lid assembly to the Solenoid Switch enclosure using the supplied TX40
driver bit.
2. Lift off the Lid Assembly.
3. Set Lid Assembly aside safely to protect internal gasket assembly.

Figure 7: Lid Assembly
To ret the Lid assembly;
1. Place Lid Assembly onto the Solenoid Switch enclosure.
Note: No additional sealing elements or compounds (for example Silicon sealant) are required to ret and reseal the
Lid Assembly. Any additional materials or work may reduce IP level and will void Fortress warranty.
2. Ret and tighten the 10 x M8 Torx screws in an even distribution. For example;
i. Half tighten screws in the order specied in Figure 7.
ii. Fully tighten screws in the order specied in Figure 7.
iii. Check and, if necessary, re-tighten screws in the order specied in Fix.2.
Note: All M8 Torx lid screws must be fully retted and tightened to a minimum torque setting of 20Nm to maintain IP
level. Note: It is recommended that all M8 Torx Lid screws be secured against tampering removal or loosening due to
vibration using a middle strength adhesive threadlocker.
3. Fully test and operate the complete Alfred Solenoid Controlled Guard Lock to ensure correct function and operation. See
Mechanical Function Test section for more details.
If required, any replacement Lid assembly screws must be identical to those as supplied by Fortress and must be M8 x
14mm, property class of A2-70 with a minimum yield strength of 700 MPa to ISO 3506, ISO 262, ISO 965-1, and ISO 965-3.
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.50 SHEET: 2 OF 3
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
ALFRED SAFETY SWITCH OPERATING INSTRUCTIONS IMAGES DWG NO: SD-00033
Operating Instructions: Alfred Solenoid Controlled Guard Lock
15
Electrical Connection and Installation
Tools and Fixings Required
Terminal Screwdriver.
Cable and Wiring selection requirements:
• All cabling and wiring used to connect and install the Alfred Solenoid Controlled Guard Lock must be of an equal or greater
level of ATEX and IECEx protection in order to maintain ATEX Device ratings (See ATEX, IECEx and HazLoc section for
Device rating and detail).
• Correctly rated and sized cable glands and connectors must be used in order to maintain the IP67 and IP69 protection
rating of the Ex Rated Solenoid module.
Note: The conduit connection hole of the Solenoid Module is an M20 x 1.5mm pitch threaded hole.
• The cable and cable gland used must have a minimum service temperature in excess of 70˚C.
• The wire used to connect to the Internal Earthing point of the Solenoid Module (see Figure 11) must have a greater than or
equal cross-sectional area to that of the phase conductor wires.
Note: The internal Earthing point shall be used for the Equipment Grounding connection.
• The wire or cabling used to connect to the External Earthing point of the Solenoid Module (see Figure 11) must have a
cross-sectional area of at least 4mm2.
Note: The external Earthing point shall be used for a Supplementary Bonding Connection where local codes or authorities
permit or require such connection.
• Both the Internal and External Earthing wires must be secured and clamped so that they cannot be readily loosened or
twisted. This could be done using a U-Shaped Saddle Clamp or similar.
• All internal wiring for the Safety Circuits and Gate Monitor Circuits must be made using 24-16 AWG copper cable.
SWITCH ENCLOSURE
LID ASSEMBLY
M8 TORX LID SCREWS

Operating Instructions: Alfred Solenoid Controlled Guard Lock
16
Electrical Connection
1. Check that the Alfred Solenoid Controlled Guard Lock product to be installed is of the same electrical type and voltage
rating as the machine control circuits. This information can be found on a label, xed to the back of the device. Note that
the Ex Rated Solenoid Module is designed to operate at +/-10% of the nominal supply voltage. The use of an incorrect
voltage can seriously damage the device.
2. Remove the Lid Assembly from the Ex Rated Solenoid Module of the Alfred Solenoid Controlled Guard Lock product
following the guidelines and instructions detailed in the Lid Assembly Requirements section above.
3. Make sure the electrical supply is fully isolated before any connection is made.
4. Attach suitable Cable and Cable Gland – See requirements above for further detail.
5. Bond the Device enclosure to Earth via the Internal Earthing point provided (see Figure 11) and also, if required, the
additional External Earthing point (see Figure 11). See Earthing requirements above for further detail.
6. Connect all required internal wiring to the Safety Circuits and Gate Monitor Circuits. See Wiring Diagrams below and
function descriptions below for further detail.
The electrical system must incorporate fuse protection for all circuits, using a Quick-Acting (F) fuse (maximum rating 3A, 250v
to IEC 127). All fuses must be inserted on the positive line.
Terminals 2 & 14. (Safety Circuit I)
These Contacts should be connected in series with the external device which isolates all electrical parts of the machine that
are being protected by the Alfred Solenoid Controlled Guard Lock product.
Each safety circuit should be connected to an appropriate evaluation device e.g. a ‘safety relay’. The diagnostic coverage
of the evaluations device will affect the safety performance of the system. Connecting safety circuits of multiple products in
series may reduce the performance level of the system according to DIN EN 13849-1 owing to reduced fault recognition.
Terminals 3 & 4. (Solenoid operating supply).
By applying the solenoid control supply to these terminals, the machine control can operate the locking mechanism in the
Solenoid Module.
Terminals 5 & 7. (Safety Circuit II)
This is a second, isolated Safety Circuit for redundancy (see the description above).
Terminal 6.
Input voltage to terminal 12 for Gate Monitor Circuit and terminal 13 Solenoid Monitor Circuit.
Terminal 12. (Guard Open Output Signal).
Control signal produced by the Ex Rated Solenoid Module to indicate that the Machine Guarding is in an open state or that
the primary Key has been removed depending on the complete Alfred Product type and application. This signal can be used
for indication and / or machine control.
Terminal 13. (Guard Unlocked Output Signal).
Control signal produced by the Ex Rated Solenoid Module to indicate that the Module is unlocked and ready to open. This
signal can be used for indication and / or machine control.
Terminals 6 & 12. (Guard Open Output Signal / Gate Monitor).
Control signal produced by the Alfred Safety Switch to indicate that the Machine Guarding is in an open state or that the
primary Key has been operated depending on the complete Alfred Product type and application. This signal can be used for
indication and / or machine control.
7. Once all wiring is complete, ret the Lid Assembly to the Ex Rated Solenoid Module Enclosure following the guidelines and
instructions detailed in the Lid Assembly Requirements section above.
8. Fully test and operate the complete Alfred Solenoid Controlled Guard Lock product for correct electrical and mechanical
operation.
Wiring Diagrams
Figure 8: Safety-On-Guard-Locking type Solenoid Module Figure 9: Safety-On-Guard type Solenoid Module
www.fortressinterlocks.com
FORTRESS
CONTROL VOLTAGE 24V DC
SOLENOID VOLTAGE 24V DC
SOLENOID POWER RATING 350mA max @ 24V DC
MAXIMUM SWITCH CURRENT DC13: Le=0.5a, Ue=24V DC
MINIMUM SWITCH CURRENT 1mA @5V DC
CABLE SIZE 26 - 14 AWG
A B C D E F G H I J K L
1
2
3
4
5
6
7
8
9
A3 FINISH: UNSPECIFIED GENERAL TOLERANCE: 0.1 / 0.5 SHEET: 1 OF 1
ORIGINAL SIZE MATERIAL: UNSPECIFIED CHECKED BY: Liam O'Sullivan
REMOVE ALL SHARP EDGES,
BURRS AND FLASH PART NO: T04571 DRAWN BY: Stuart Lumsden
DO NOT SCALE. IF IN DOUBT ASK!
ALL DIMENSIONS ARE IN mm (UOS) DWG NO: T04571 DATE: 05-03-21
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT OUR SPECIFIC, WRITTEN APPROVAL. EXPXL411 & EXPXL471 - ALFRED WIRING DIAGRAM RELEASE LEVEL: Approved For Production
TITLE: SCALE: 0.50 ISSUE: 0
ALFRED EX RATED SOLENOID MODULE WIRING DIAGRAM
FOR SAFETY-ON-GUARD-LOCKING MODULES WITH FULL SAFETY MONITORING ON SOLENOID ACTION
DIAGRAM B - TERMINAL POSITIONS;
DIAGRAM A - WIRING DIAGRAM;
1
2
3
4
5
6
7
8
9
10
11
12
13
14
INTERNAL EARTHING POINT
SHALL BE USED FOR EQUIPMENT GROUNDING
CONNECTION.
FIX WITH M4 FIXING SCREW (SUPPLIED).
SEE OPERATING INSTRUCTIONS FOR DETAILS.
EXPXL411 & EXPXL471
214 5 7612 13 34
SC1
SC2
EXTERNAL EARTHING POINT
SHALL BE USED FOR SUPPLEMENTARY
BONDING CONNECTION WHERE REQUIRED.
FIX WITH M4 FIXING SCREW (SUPPLIED).
SEE OPERATING INSTRUCTIONS FOR DETAILS.
www.fortressinterlocks.com
FORTRESS
A B C D E F G H I J K L
1
2
3
4
5
6
7
8
9
A3 FINISH: UNSPECIFIED GENERAL TOLERANCE: 0.1 / 0.5 SHEET: 1 OF 1
ORIGINAL SIZE MATERIAL: UNSPECIFIED CHECKED BY: Liam O'Sullivan
REMOVE ALL SHARP EDGES,
BURRS AND FLASH PART NO: T04573 DRAWN BY: Stuart Lumsden
DO NOT SCALE. IF IN DOUBT ASK!
ALL DIMENSIONS ARE IN mm (UOS) DWG NO: T04573 DATE: 05-03-21
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT OUR SPECIFIC, WRITTEN APPROVAL. EXPXL416 & EXPXL461 - ALFRED WIRING DIAGRAM RELEASE LEVEL: Approved For Production
TITLE: SCALE: 0.50 ISSUE: 0
CONTROL VOLTAGE 24V DC
SOLENOID VOLTAGE 24V DC
SOLENOID POWER RATING 350mA max @ 24V DC
MAXIMUM SWITCH CURRENT DC13: Le=0.5a, Ue=24V DC
MINIMUM SWITCH CURRENT 1mA @5V DC
CABLE SIZE 26 - 14 AWG
ALFRED EX RATED SOLENOID MODULE WIRING DIAGRAM
FOR SAFETY-ON-GUARD MODULES WITH SAFETY MONITORING ON GATE/KEY ACTION ONLY.
DIAGRAM B - TERMINAL POSITIONS;
DIAGRAM A - WIRING DIAGRAM;
1
2
3
4
5
6
7
8
9
10
11
12
13
14
INTERNAL EARTHING POINT
SHALL BE USED FOR EQUIPMENT GROUNDING
CONNECTION.
FIX WITH M4 FIXING SCREW (SUPPLIED).
SEE OPERATING INSTRUCTIONS FOR DETAILS.
EXPXL416 & EXPXL461
214 5 7612 13 34
SC1
SC2
EXTERNAL EARTHING POINT
SHALL BE USED FOR SUPPLEMENTARY
BONDING CONNECTION WHERE REQUIRED.
FIX WITH M4 FIXING SCREW (SUPPLIED).
SEE OPERATING INSTRUCTIONS FOR DETAILS.

Operating Instructions: Alfred Solenoid Controlled Guard Lock
17
Figure 10: Terminal Positions
Figure 11: Internal and External Earthing Points
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED A3 SCALE: 0.50 SHEET: 3 OF 3
ORIGINAL SIZE DATE: 25-02-21 ISSUE: 0
ALFRED SAFETY SWITCH OPERATING INSTRUCTIONS IMAGES DWG NO: SD-00033
www.fortressinterlocks.com
FORTRESS
CONTROL VOLTAGE 24V DC
SOLENOID VOLTAGE 24V DC
SOLENOID POWER RATING 350mA max @ 24V DC
MAXIMUM SWITCH CURRENT DC13: Le=0.5a, Ue=24V DC
MINIMUM SWITCH CURRENT 1mA @5V DC
CABLE SIZE 26 - 14 AWG
A B C D E F G H I J K L
1
2
3
4
5
6
7
8
9
A3 FINISH: UNSPECIFIED GENERAL TOLERANCE: 0.1 / 0.5 SHEET: 1 OF 1
ORIGINAL SIZE MATERIAL: UNSPECIFIED CHECKED BY: Liam O'Sullivan
REMOVE ALL SHARP EDGES,
BURRS AND FLASH PART NO: T04571 DRAWN BY: Stuart Lumsden
DO NOT SCALE. IF IN DOUBT ASK!
ALL DIMENSIONS ARE IN mm (UOS) DWG NO: T04571 DATE: 05-03-21
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT OUR SPECIFIC, WRITTEN APPROVAL. EXPXL411 & EXPXL471 - ALFRED WIRING DIAGRAM RELEASE LEVEL: Approved For Production
TITLE: SCALE: 0.50 ISSUE: 0
ALFRED EX RATED SOLENOID MODULE WIRING DIAGRAM
FOR SAFETY-ON-GUARD-LOCKING MODULES WITH FULL SAFETY MONITORING ON SOLENOID ACTION
DIAGRAM B - TERMINAL POSITIONS;
DIAGRAM A - WIRING DIAGRAM;
1
2
3
4
5
6
7
8
9
10
11
12
13
14
INTERNAL EARTHING POINT
SHALL BE USED FOR EQUIPMENT GROUNDING
CONNECTION.
FIX WITH M4 FIXING SCREW (SUPPLIED).
SEE OPERATING INSTRUCTIONS FOR DETAILS.
EXPXL411 & EXPXL471
214 5 7612 13 34
SC1
SC2
EXTERNAL EARTHING POINT
SHALL BE USED FOR SUPPLEMENTARY
BONDING CONNECTION WHERE REQUIRED.
FIX WITH M4 FIXING SCREW (SUPPLIED).
SEE OPERATING INSTRUCTIONS FOR DETAILS.
Device Testing and Commissioning Instructions
Mechanical Function Tests (Unpowered)
Alfred Solenoid Controlled Guard Lock Product with Power-to-Lock Ex Rated Solenoid Module
(EXP - - - XL471 and EXP - - - XL461)
Test 1
Insert Actuator into Head Module and/or operate all Key Adaptors to their locked state.
• The Actuator and / or Key Adaptors must mechanically lock into place.
Note: Sequence and operation of Key Adaptors varies depending on product selection and conguration.
Test 2
Use the Override Key to perform an Auxiliary Release operation (see Functionality section for details)
• The Actuator and / or Key Adaptors must be able to be removed.
• Return Override Spindle back to Locked position (anti-clockwise).
• Attach Override Seal label (provided) onto the Override Spindle to cover keyhole.
Warning: This device does not contain the reset facility after emergency and auxiliary release of guard locking.
Additional measures are required to achieve the reset of the machine system.
INTERNAL EARTHING POINT EXTERNAL EARTHING POINT
M3 x 6mm SCREW
(SUPPLIED)
M3 SHAKEPROOF WASHER
(SUPPLIED)
M3 x 0.5 THD.
HOLE 5mm
EARTHING CABLE
AND EYELET
(NOT SUPPLIED)
INTERNAL EARTHING POINT
M4 x 6mm SCREW
(SUPPLIED)
M4 SHAKEPROOF WASHER
(SUPPLIED)
M4 x 0.7 THD.
HOLE 5mm
EARTHING CABLE AND EYELIT
(NOT SUPPLIED)
EXTERNAL EARTHING POINT

Operating Instructions: Alfred Solenoid Controlled Guard Lock
18
Alfred Solenoid Controlled Guard Lock Product with Power-to-Lock Ex Rated Solenoid Module
(EXP - - - XL471 and EXP - - - XL461)
Test 1
Insert and remove Actuator into Head Module and/or operate all Key Adaptors.
• The Actuator and/or Key Adaptors must not be mechanically trapped.
Note: Sequence and operation of Key Adaptors varies depending on product selection and conguration.
Electrical Function Tests
Operate the Alfred Solenoid Controlled Guard Lock product by closing and opening the Guarded Area and / or operating all
Key Adaptors. Validate the safety circuits change state as expected, see Electrical Function descriptions and Wiring Diagrams
above for detail.
If the complete Alfred Product is used in a Machine Guarding application, ensure the Machine Guarding can only be opened
under the conditions outlined within the risk assessment. See ISO 13849-2 Safety of machinery — Safety-related parts of
control systems — Part 2: Validation for further guidance.
Service and Inspection
Regular inspection of the following is necessary to ensure trouble-free, lasting operation of the Alfred Solenoid Controlled
Guard Lock product:
• Correct operating function.
• Secure mounting of all components.
• Debris and wear.
• Sealing of cable entry.
• Loose cable terminals or plug connectors.
WD40 lubricant or equivalent, should be applied to each mechanical element of the Alfred Solenoid Controlled Guard Lock
product every 10,000 operations, or sooner, to ensure smooth product operation and function.
There are no user serviceable parts in the Alfred Solenoid Controlled Guard Lock product. If damage or wear is
found with an assembly, please contact your local Fortress Channel Partner.
The complete interlock must be replaced after 1 million switching operations.
Disposal
The Alfred Solenoid Controlled Guard Lock product does not contain any certied hazardous materials so should be disposed
of as industrial waste. Electrical items should not be disposed of in general waste and must be appropriately recycled.
Liability Coverage is Voided Under the Following Conditions:
• If these instructions are not followed.
• Non-compliance with safety regulations.
• Installation not performed by authorised personnel.
• Non-implementation of functional checks.
Protection Against Environmental Inuences
A lasting and correct safety function requires that the Alfred Solenoid Controlled Guard Lock be protected against the ingress
of foreign bodies such as swarf, sand, blasting shot, etc.
The Solenoid Controlled Guard Lock is to be mounted away from the machine, or by the use of anti-vibration mountings, in
order to avoid the effects of vibration, shock and bump.
Use in Dusty Environments: Careful product selection is required, which is best performed under the guidance of a Fortress
Representative, in order to assess the dust type and product style required. It is normally accepted that the product performs
best in a dusty environment when mounted upside down.
Use in Corrosive Environments: Careful product selection is required, which is best performed under the guidance of a
Fortress Representative.
The manufacturer reserves the right to modify the design at any time and without notice.
This guide should be retained for future reference.
Fortress Interlocks Ltd, 2 Inverclyde Drive, Wolverhampton, WV4 6FB, United Kingdom, Tel: [phone], Web: www.fortressinterlocks.com November 2021 - v1.2

FQCD381 –Ex Declaration of Conformity Template –Issue 1 –19/03/2021
S. Burns
Quality Assurance Manager (Global)
Fortress Interlocks Ltd
2 Inverclyde Drive
Wolverhampton
West Midlands
WV4 6FB
United Kingdom
Signed for and on behalf of Fortress Interlocks Ltd
EU Declaration of Conformity
Electro-mechanical product
Equipment Reference
EXP(z)XL(y)(x), EXP(z)XT(y)(z)
Equipment Rating
IP67
This Declaration of Conformity is issued under the sole responsibility of the manufacturer
This declaration relates to the
Alfred Solenoid and related
variations as described in the
certificate, coded:
Group II Category 2G
Ex db h IIC T6 Gb
Ex tb h IIIC T85°C
The objective of the declaration
described above is in conformity
with the relevant Union
harmonisation legislation:
2014/34/EU
The following harmonised standards and other technical specifications were used in support of this declaration:
Harmonised Standards:
EN 60079-1:2007
EN 60079-31:2009
Other Specifications:
EN 60079-0:2009 –This standard has been compared with EN 60079-0:2012
+ A11:2013 (Currently harmonised) and no significant changes have
occurred which are applicable to this equipment
Notified body SGS Baseefa (number 1180) performed the EU-Type examination in accordance with Annex III of the
directive and issued the certificate: SGS20ATEX0171X
Notified body SGS Baseefa (number 1180) performed the Conformity to type based on quality assurance of the
production process in accordance with Annex IV of the directive and issued the QA Notification document: 8029

S. Burns
Quality Assurance Manager (Global)
Fortress Interlocks Ltd
2 Inverclyde Drive
Wolverhampton
West Midlands
WV4 6FB
United Kingdom
Signed for and on behalf of Fortress Interlocks Ltd
UKEX Declaration of Conformity
Electro-mechanical product
Equipment Reference
EXP(z)XL(y)(x), EXP(z)XT(y)(z)
Equipment Rating
IP67
This Declaration of Conformity is issued under the sole responsibility of the manufacturer
This declaration relates to the
Alfred Solenoid and related
variations as described in the
certificate, coded:
Group II Category 2G
Ex db h IIC T6 Gb
Ex tb h IIIC T85°C
The objective of the declaration
described above is in conformity
with the relevant Union
harmonisation legislation:
2014/34/EU
The following harmonised standards and other technical specifications were used in support of this declaration:
Harmonised Standards:
EN 60079-1:2007
EN 60079-31:2009
Other Specifications:
EN 60079-0:2009 –This standard has been compared with EN 60079-0:2012
+ A11:2013 (Currently harmonised) and no significant changes have
occurred which are applicable to this equipment
Notified body SGS Baseefa (number 1180) performed the EU-Type examination in accordance with Annex III of the
directive and issued the certificate: BAS21UKEX0009X
Notified body SGS Baseefa (number 1180) performed the Conformity to type based on quality assurance of the
production process in accordance with Annex IV of the directive and issued the QA Notification document: 8029