© Leuze electronic GmbH + Co. KG, In der Braike 1, 73277 Owen, Germany, Phone: +49 (0) 7021/573-0, Fax: -199, info@leuze.de, www.leuze.com We reserve the right to make changes 2015/11 Art. no. 50130051
L300 Safety Locking Devices
1 INFORMATION ON THIS DOCUMENT
1.1 Function
The present instruction sheet provides information on installation, connection and safe
use of the L300 series safety switch having an interlocking function with or without
guard locking, according to the EN ISO 14119 standard.
1.2 Addressed to: qualifi ed personnel only
The operations you fi nd explained in the present instruction sheet must exclusively
be carried out by qualifi ed personnel, who are perfectly able to understand them and
have been duly authorised.
1.3 Original instructions
This document contains the original instructions.
2 SYMBOLS USED
This symbol indicates any relevant complementary information.
Warning: Any failure to observe this warning note can cause breakage or
malfunction, with possible loss of the safety function.
3 FITTING INSTRUCTIONS
3.1 Choosing the type of actuator
Warning: The switch is available with two types of RFID actuator: one with
a high coding level (UCA) and one with a low coding level (SCA). In the case
where an actuator with a low coding level has been chosen, ensure that the
additional specifi cations prescribed in paragraph 7.2 of the EN ISO 14119:2013
standard are respected during installation. Moreover, any other SCA actuators
present in the same place where the switch has been installed must be segregated
and kept under strict control in order to avoid any manipulation of the safety device.
It is advisable to use actuators with a high coding level so as to make the
installation safer and more fl exible. This will render it unnecessary to screen
the device, to fi t it in non-accessible areas or to follow other prescriptions specifi ed
by the EN ISO 14119 standard for actuators with low coding level.
3.2 Choosing the operating principle
Warning:The switch is available with two operation principles:
Operation principle SLM24 = Actuator locked with electromagnet deenergised
(spring lock, release with I4 input activation).
Operation principle MLM24 = Actuator locked with electromagnet energised
(lock with l4 input activation, spring release).
Operation principle SLM24 keeps the door lock even in the case where the machine
is disconnected from the power supply. Therefore, if the machine is subject
to dangerous movements with inertia, all dangerous elements are made fully
inaccessible (door locked) even in case of sudden power failure. On the contrary, if
the machine structure allows a person to enter the danger area with the whole body
and possibly end up being stuck inside the machine, the switch must be provided
with an anti-panic release button, in order to allow the trapped person to get out
even in case of power failure.
Operation principle MLM24 keeps the door lock only when the machine is connected
to the power supply. Therefore, before choosing this operation principle, carefully
evaluate all dangers deriving from sudden power failure with a consequent possible
immediate door release.
In case of machines without inertia, i.e. with dangerous elements being
immediately blocked as soon as the protection is opened, for which a doorlock switch has been chosen merely to safeguard the production process, operation
principle SLM24 or MLM24 can be used indifferently.
3.3 Choosing the safety output activation mode
Warning: The switch is available with two safety output activation mode:
- Mode 1 (L300-Mx1x): safety output active on guard closed and locked
- Mode 2 (L300-Mx2x): safety output active on guard closed.
When the switch and the actuator are correctly mounted on the guard, a Mode 1
switch will activate safety output OSSDs when the guard is both closed and the locking bolt is in the locked position, so the guard cannot be opened with safety outputs
on. Mode 1 device is a coded type 4 guard locking with lock following EN ISO 14119.
When the switch and the actuator are correctly mounted on the guard, a Mode 2
switch will activate safety output OSSDs when the guard is closed. This mode allows
to lock/unlock the guard while still keeping on the safety chain, typically for specifi c
applications without inertia, when the risk does not continue after the opening of the
guard. Care must be taken to evaluate if Mode 2 could be applied safely to the machin-
ery to be protected: Mode 2 device is a high coded type
4 guard locking without lock following EN ISO 14119.
3.4 Device adjustment
If necessary, it is possible to adjust the position of the
head and the release device (if present) in order to turn
the device to the most appropriate position for the specifi c application. Fully remove the 4 screws from the
head to turn either the head or the release device independently over an arc of 270°.
Warning: Do not force the rotation beyond 270°, otherwise the device could
be broken.
Once the adjustment has been completed, newly tighten the head screws with a
torque from 0.8 to 1.2 Nm.
Warning: In order to implement Safety function number 4 (see par. 4.1) after
head adjustment it is mandatory to fasten the two provided one-way screws
in place of two original screws, in opposite corner positions.
3.5 Device adjustment
Warning: The device must be fi xed to the
machine by means of 4 M5 screws (not
supplied) with a length of 45 mm or more. The
device must never be fi xed with less than 4 screws.
The 4 screws chosen for fi xing must be able to
withstand a pull greater than 20,000 N exerted on
the actuator.
Tightening torque of the 4 M5 screws from 2 ... 3 Nm
It is advisable to install the device in the top
part of the door, in order to prevent any dirt or
work residues from getting inside the hole where the
actuator is to be introduced. In order to avoid device
bypassing it is advisable to fi x the device to the
machine body with non-removable fastening.
3.6 Fixing the actuator to the door
Warning: As prescribed by the
EN ISO 14119 standard, the actuator
must be fi xed to the door frame irremovably.
For this purpose the actuator is provided with
4 safety screws (Bits for safety screws Torx TR25).
After the fi xing operation, it is mandatory to plug
the holes of the 4 screws using the caps supplied,
so that it becomes more diffi cult to access the
screws.
The actuator must always be fi xed using at least 4 M5 screws with a length of
20 mm or more. The actuator must never be fi xed with less than 4 screws. The 4
screws chosen for fi xing (if different from those supplied) must be able to withstand
a pull greater than 20,000 N exerted on the actuator.
Tightening torque of the 4 M5 screws = 2 ... 3 Nm
For correct fi xing, other means can also be used, such as rivets, nonremovable one-way security screws or other equivalent fi xing system, as long
as they are able to withstand a pulling force greater than 20,000 N.
3.7 Switch-actuator alignment
Warning: Despite the fact that the device has been designed to help
alignment between the head and the respective actuator, excessive
misalignment could cause the actuator to be damaged. Periodically check the
alignment between the switch and the respective actuator.
Maximum misalignment permitted from the hole axis, for rigid doors: +/-2 mm
vertical and horizontal.
The actuator must not hit the outside of the actuator inlet area, and must not be
used as a centering device for the mobile protection.
In the case of application on swing doors, check that the radius between the axis of
the actuator pin and the axis of the hinge fi tted on the door is greater than 150 mm.
Do not use a hammer for the adjustments, unscrew the screws and adjust the
device manually, then tighten it in position.
This device is not suitable for applications in which the guard, with the permanently
attached actuator, allows misalignments such as the actuator shaft does not enter
through the hole of the device head with the door completely closed.
The switch is provided with a through hole for inserting the actuator. In the
case where it is used in dusty places, make sure not to obstruct the outlet
hole opposite the inlet one. This way, any dust which may go inside the hole will
always be allowed to come out of the opposite side.
3.8 Anti-panic release button
Some of the switch versions are provided with a release button
in order to allow any personnel accidentally trapped inside the
machine to get out. This button, complying with the EN ISO 14119
standard, directly acts on the lock mechanism, and immediately
releases the actuator regardless of the condition in which the device is found. Moreover, after being activated, this button causes
immediate opening of the OS1 and OS2 outputs in mode 1 switch
and the O4 signalling output. This button unlocks the door even if
the device is not supplied with power.
For correct installation of the anti-panic release button, the following prescriptions are to be observed:
• The release button must be clearly visible from inside the machine
• Button activation must be easy, immediate and unrelated to the
machine operating status. To help recognize the button and
make its function evident, identifi cation stickers are available in
various languages. Contact our commercial organisation (see
paragraph SUPPORT).
• The release button must not be made easy to activate by an operator standing outside the machine, when the door is closed.
• To guarantee correct operation and handy resetting, a distance
ranging from 10 to 35 mm must be kept between the wall from
where the button protrudes and the release button.
• The release button sliding area is to be kept clean. Any dirt or
chemical substance getting inside the button can compromise
device operation.
• Check the button periodically (at least once a year) for correct
operation.
• Train the machine operators on correct button operation, to
avoid any improper use (i.e. the button must not be used as
a clothes-hook).
• The release button must not be used as a machine emergency
stop.
For installation on walls thicker than 20 mm, extensions are available for the release
button.
For correct installation of the extensions, observe the following prescriptions:
• Do not exceed an overall length of 500 mm between the release button and the
switch.
• Always use some thread locker on each threaded coupling between the button, extensions and switch.
• Avoid twisting or bending the release button, if necessary use an appropriate sliding
guide (pipe or bush) when the button and its extensions exceed a length of 100 mm.
• Tightening torque for button and extensions from 4 to 5 Nm.
3.9 Access control
These safety locking devices alone cannot manage to protect any operators or maintenance engineers in the case where they may physically enter the danger area with
their whole body, since any unintentional closing of a protection behind them could
allow the machine to be restarted. In the case where machine restarting control is entirely entrusted to these safety locking devices, a device must be provided to avoid the
said risk, such as a lock-out system which stops the machine from being restarted. A
specifi c lock-out device is available as an accessory so as to prevent any unintended
start of the machine with the operator still inside, please contact our commercial department (see paragraph SUPPORT).
3.10 Auxiliary release with a tool or a lock
Some of the switch versions are provided with an auxiliary release in order to allow
handy installation (release with a tool) or to permit opening only for authorised personnel (lock release). Both these mechanical devices act inside the switch like the
anti-panic release button described previously. Therefore they also unlock the door
in case of power failure. These release devices may only be operated by a machine
maintenance engineer who has received adequate training on the dangers deriving
from their use.
How to use the auxiliary release with a tool:
• Unscrew the locking screw with a PH1 cross-head screwdriver.
• Turn the hexagonal-hole bush clockwise by 180°.
• Do not force the bush beyond 180°.
• To avoid any improper use of the auxiliary device with a tool, it is advisable to seal
the device through the appropriate hole found in the upper part, or to seal the screw
cross head with a few drops of paint.
• After each activating operation, it is advisable to reseal the
device.
• For particular applications, versions are available entirely free of
any auxiliary release device.
How to use the auxiliary lock release:
• Open the protection cap.
• Insert the key supplied with the switch and turn clockwise by
180°.
• Do not force the key beyond 180°.
• Each time the key is extracted, close the rubber cap.
• The release key must only be made available to
the machine maintenance engineer and kept in a
secluded place.
• The release key must not be made available to the
machine operator.
• For particular applications, versions are available
entirely free of any auxiliary release device.
3.11 Connections
Warning: The device is provided with OSSD type solid-state safe electronic
outputs. These outputs behave in a different way as compared to an
electromechanical contact. The use and installation of a safety device with solidstate outputs are only allowed when all the characteristics of this particular type of
outputs are known in detail.
To open the device cover, use a PH2 cross-head screwdriver and tighten the screws
with a torque ranging from 0.8 to 1.2 Nm.
10
11 12 13 14
15 161718
1
234 5678
9
6
7
1
2
3
4
8
5
Internal terminal
board
M12 male connector
8 poles
stand-alone connection
Connections
1 3 A2 Power supply input 0 V
2 / B2
Auxiliary power supply
output 0 V
3 8 I4
Solenoid
activation input
42O3
Signalling output for
actuator switched on
55O4
Signalling output for
actuator switched on and
locked
66I3
Actuator programming
input
10 1 A1
Power supply input +24
Vdc
11 / B1
Auxiliary power supply
output +24 Vdc,
8 A max
12 / IS1 Safe input
13 / IS2
Safe input
14 / I5 EDM input (a)
15 4 OS1 Safe output
16 7 OS2 Safe output
Warning: terminals 7, 8, 9, 17 and 18 must not be used.
(a) Only available in version L300-M5xx
3.12 RFID sensor intervention points
The RFID sensor placed in the device recognises the actuator when it is found at a
distance of 0 to 3 mm. Within this fi eld, the O3 signalling output and the ACT led are
activated to signal the guard-closed condition. In this condition, it is possible to obtain
output locking by means of the I4 input. After the locking operation, the LOCK led and
the O4 output are activated; at the same time the RFID sensor widens its releasing
distance, so as to ensure that no vibrations or impacts occurring with the guard locked
may cause the OS1, OS2 and O4 outputs to open accidentally. If the I4 input is activated or deactivated, without the actuator being present, the device does not carry out
any locking and does not activate any of the OS1, OS2, or O4 outputs. In order to open
the protection, it is necessary to act by means of the I4 input; with the protection released, the O4 output will be deactivated and the LOCK led will be switched off. At this
point, the RFID sensor will bring its intervention distance back to the initial values and,
after the guard has been opened, the O3 output and the ACT led will be deactivated.
f4
f1
f2
f3
f0
OS1
OS2
IS2
IS1
IN
O4
PWR
A2A1
O3
OUT
CODE
ACT
LOCK
I5
EDM
f5
4 OPERATION
4.1 Defi nitions
State of the switch:
• OFF: the device is off, not powered.
• POWER ON: status immediately following switching on, when the device carries
out internal tests.
• RUN: status in which the device works normally.
• ERROR: error status in which the safe outputs are deactivated. Indicates that a fault
is present inside or outside the device, such as:
- short circuit between the safe outputs (OS1 and OS2),
- short circuit between a safe output and the earth,
- short circuit between a safe output and the power supply voltage,
- excessive misalignment between a switch and a locked actuator,
- excess of maximum holding force with relating device breakage in the locked condition,
- excess of maximum or minimum ambient temperature admitted,
- internal fault.
Safety functions:
The safety functions are defi ned as follows:
1) The OSSD safety outputs must be de-activated when the guard is detected as
unlocked (not available on ‘Mode 2’ versions).
2) The OSSD safety outputs must be de-activated when RFID tag is not detected
anymore
3) The OSSD safety outputs must be de-activated when at least one safety input
channel (IS1 or IS2) is not active.
4) The device must keep the guard closed and locked when electro magnet is active
(‘MLM24’ mode) or inactive (‘SLM24’ mode) and applied force is lower than the
declared F
Zh
value.
EDM function (on selected versions). External Device Monitoring is a function that
allows the device to monitor the state of external contactors. External contactors activation/deactivation state must follow L300 switch OSSDs state within a maximum
delay (see par. 4.7)
4.2 Operation description
Note: The following operation description refers to a device with safety outputs active
on guard closed and locked (Mode 1). A device with safety outputs active on guard
closed (Mode 2) differs in the activation of the safety outputs OS1 and OS2 without
the guard locking verifi cation performed by function f4.
After being correctly installed by following the present instructions, the safety device
can be supplied with power. The sequence below shows the logic functions which
interact inside the safety device.
In the initial “POWER ON” status, function f0 of the safety device carries out an internal self-diagnosis which, if successfully completed, brings the device to the “RUN”
status. If the test is not passed due to an internal fault, the device enters the “ERROR”
status. On EDM versions, at power on, the EDM signal is checked and it must be active within 500 ms from device startup. In case the EDM positive signal is not present,
after timeout the function f5 makes the device enter the fault state.
The “RUN” status indicates normal operation: function f1 evaluates the
IS1 and IS2 inputs, while at the same time function f2 checks that the actuator is present, and function f4 checks that the actuator has been locked.
On EDM versions, f5 additionally checks the coherence of EDM signal with state
change of the external contactor, as well as the “safe outputs off” state.
When these three conditions occur, function f3 of the device activates the OS1 and
OS2 safe outputs.
The IS1 and IS2 inputs of the device are usually activated simultaneously and therefore they are monitored, in terms of their status and their coherence. The device deactivates the safe outputs and signals a condition of non-coherent inputs by means of
IN led green/orange blinking light, in the case where only one of the two inputs is deactivated. In order to reactivate the safe outputs, both inputs must be deactivated fi rst.
During the RUN status, function f0 cyclically carries out internal tests in order to highlight any faults. Any internal error being detected brings the device to the “ERROR”
status (PWR led with red fi xed light), which immediately deactivates the safe outputs.
The “ERROR” status can be reached even in the case of short circuits occurring be-
tween the safe outputs (OS1 and OS2)
or a short circuit of an output towards
earth or towards the power supply. Also
in this case, function f3 deactivates the
safe outputs, and the error status is indicated by the OUT led red blinking light.
The O3 signalling output is activated
during the “RUN” status when the actuator is inserted in the device, regardless
of the status of the IS1and IS2 inputs.
The status of this output is displayed by
means of the ACT led.
The O4 signalling output is activated during the “RUN” status when the actuator
has been inserted and locked inside the
device, regardless of the status of the
IS1and IS2 inputs. The status of this output is displayed by means of the LOCK
led.
The actuator locking and releasing
operations are controlled by means of
the I4 input.
4.3 Actuator replacement
The I3 input can be used, at all times, to replace the coded actuator with a second actuator. By activating this input, the device gets ready for programming mode with the
IN led orange light blinking, it deactivates all the OS1, OS2, O3 and O4 outputs and
then releases the actuator. Keep the input active while inserting the second actuator. The completed acquisition of the second actuator will be confi rmed by the IN led
being switched off. At this point, it is possible to deactivate the I3 input. The device will
automatically be brought to the restarting condition.
The fi rst actuator will no longer be recognised.
The second actuator will have to be adequately fi xed to the protection as explained
in point 3.6.
This operation must not be carried out as a repair or maintenance operation.
In the case where the device stops working correctly, replace the entire device and
not just the actuator.
4.4 Connection in series with safety modules
It is possible to install several devices in cascade connection up to a maximum number
of 32 units, while maintaining safety category 4 / PL e according to EN ISO 13849-1
standard and SIL CL 3 integrity level according to EN 62061 standard.
Check that the PFH
d
and MTTFd values of the system comprising the device cascade,
as well as the safety module, meet the SIL/PL level requirements prescribed for the
application.
L300
L300
L300
PLC
OS1 OS2
IS1 IS2
IS1 IS2
OS1 OS2
IS1 IS2
OS1 OS2
O3
O4
O3
O4
O3
O4
AC-L300-•CA
AC-L300-•CA
AC-L300-•CA
+ Vcc
Leuze electronic MSI
safety module
With this connection method, observe the following directions:
• Connect the inputs of the fi rst device in the chain to the power supply.
• The OS1 and OS2 safety outputs of the last device in the chain must be evaluated
by a safety module.
• Only use the device cascade with the safety modules which are compatible with the
characteristics of the OS1/OS2 safe outputs. (See paragraph 4.7 INTERFACING).
• Respect the limits on the output line stray capacity, as specifi ed in the electrical
data. (See paragraph 6.3.2 – ELECTRICAL DATA OF OS1/OS2 SAFE OUTPUTS).
• Check that the cascade response time respects the requirements of the safety func-
tion to be obtained.
• The chain response time must be calculated taking into account the response time
of each device.
4.5 Operation status: Mode 1 (safety outputs active on locked guard)
PWR
LEDINLED
OUT
LED
ACT
LED
LOCK
LED
EDMaSensor
status
Description
O O O O O O OFF Device off.
green /
alter-
nated red
green /
alter-
nated red
green /
alter-
nated red
green /
alter-
nated red
green /
alter-
nated red
green /
alter-
nated red
POWER
ON
Internal tests at switching
on.
green
OO
green RUN
Device with safe outputs
not active.
green green
RUN
Activation of safe inputs.
green green /
orange
blinking
O
RUN
Non-coherence of safe
inputs. Recommended
action: check for
presence and/or wiring
of inputs.
green
green RUN
Actuator in safe area.
O3 signalling output
active.
green
green green O RUN
Actuator in safe area
and locked, O3 and O4
outputs active.
green green green green green O RUN
Activation of the IS1 and
IS2 safe inputs.
Actuator in safe area
and locked, O3, O4 and
safety outputs active.
green
red blink-
ing
ERROR
Error on safe outputs.
Recommended action:
check for any short
circuits between the
outputs, outputs and
earth or outputs and
power supply, then
restart the device.
green O O red blink-
ing
O O ERROR
Actuator detection error.
Check for physical integ-
rity of the device, if faulty
replace the entire device.
If undamaged, realign the
actuator with the switch
and restart the device.
red O
O
O O O ERROR
Internal error.
Recommended action:
restart the device.
If the fault persists,
replace the device.
green
O green RUN
EDM signal active
(external relay OFF)
a
green green green green green O RUN
EDM signal inactive
(external relay ON)
a
green O O O O Red
blinking
ERROR
Error in EDM function
a
O = off (a) Only available in version L300-M5xx.
= indifferent
4.6 Operation status: Mode 2 (safety outputs active on closed guard)
PWR
LEDINLED
OUT
LED
ACT
LED
LOCK
LED
EDMaSensor
status
Description
O O O O O O OFF Device Off
green /al-
ternated
red
green /al-
ternated
red
green /al-
ternated
red
green /al-
ternated
red
green /al-
ternated
red
green /al-
ternated
red
POWER
ON
Internal tests at switching
on.
green
OO
green RUN
Device with safe outputs
not active.
green green
RUN
Activation of safe inputs.
green green /
orange
blinking
O
RUN
Non-coherence of safe
inputs. Recommended
action: check for
presence and/or wiring
of inputs.
green
green RUN
Actuator in safe area. O3
signalling output active
green
green green RUN
Actuator in safe area
and locked, O3 and O4
outputs active.
green green green green
O RUN
Activation of the IS1 and
IS2 safe inputs. Actuator
in safe area, O3 and
safety outputs active.
green O Red
blinking
O O O ERROR
Error on safe outputs.
Recommended action:
check for any short
circuits between the
outputs, outputs and
earth or outputs and
power supply, then
restart the device.
green O O Red
blinking
O O ERROR
Actuator detection error.
Check for physical
integrity of the device, if
faulty replace the entire
device. If undamaged,
realign the actuator with
the switch and restart the
device.
red O
O
O O O ERROR
Internal error.
Recommended action:
restart the device. If the
fault persists, replace the
device.
green
O Green RUN
EDM signal active
(external relay OFF)
a
green green green green green O RUN
EDM signal inactive
(external relay ON)
a
green O O O O Red
blinking
ERROR
Error in EDM function
a
O = off (a) Only available in version L300-M5xx.
= indifferent
4.7 Interfacing
L300 with Safety relay MSI-SR4
2 channels / Category 4 / up to SIL 3 PL 3
Connections with EDM
Category 4 / up to SIL 3 / PL e
OS2
OS1
I5
A1
+
A2
-
L300-M5xx
KM1
KM2
5 DIRECTIONS FOR CORRECT DEVICE USE
5.1 Installation
Warning: The installation must exclusively be carried out by qualifi ed
personnel. The OS1 and OS2 safe outputs of the device must be connected
to a safety module (or safety PLC) for their supervision. The O3 and O4 signalling
outputs are not safe outputs and cannot be used individually in a safety circuit to
determine the safe guard-closed status.
• Do not deform or modify the device for any reason whatsoever.
• Do not exceed the tightening torques specifi ed in the present manual.
• The device carries out an operator protection function. Any inadequate installation
or tampering can cause people serious injuries and even death.
• These devices must neither be avoided (for example by bridging the contacts), nor
removed, nor turned or made ineffi cient in any other way.
• If the machine where the device is installed is used for a purpose other than that
specifi ed by the producer, the switch may not provide the operator with effi cient
protection.
• Before commissioning the machine and also periodically, check for correct switching of the outputs and correct operation of the system comprising the device and
associated safety module.
• The safety category of the system comprising the safety switch also depends on
external devices and their connection.
• Before installation, make sure that each part of the device is intact.
• Before installation, ensure that the connection cables are not powered.
• Avoid excessive bending of connection cables in order to prevent any short circuits
or power failures.
• Do not paint or varnish the device.
• Do not perforate the device; to insert electrical cables only use one of the three
M20x1.5 threaded cable inlets found in the device. Do not use the device as a support or rest for other structures, such as raceways sliding guides or similar.
• Before setting at work, make sure that the entire machine or system complies with
all applicable standards and EMC directive requirements.
• Do not apply excessive force on the device, after the actuator has been fully inserted.
• The switch fi tting surface must always be smooth and clean.
• Should the installer be unable to fully understand the documentation, the product
must not be installed and the necessary assistance may be requested (See paragraph SUPPORT).
• When the device is installed on a mobile frame and the actuator is installed on a
mobile door, ensure that the device cannot be damaged by simultaneous opening
of the frame and the door.
• After installation, check for correct operation of the auxiliary release (if present) and
the anti-panic release button (if present).
• Always keep the present operation directions enclosed with the manual of the machine to which the device is fi tted.
• The present operation directions must be kept in such a way as to be readily available during the entire period when the device is used.
5.2 Not to be used in the following types of environment
• An environment where continuous temperature changes cause condensation inside the device.
• An environment where the application causes the device to be subject to strong
impact or vibration.
• An environment where explosive or fl ammable gases are present.
• An environment where the device may become coated with ice.
• An environment containing strongly aggressive chemicals, where the products
coming into contact with the device may impair its physical or functional integrity.
• An environment where contaminated agents can get in the hole found in the switch
head and be deposited inside, which can lead to sealing gasket damage, can stop
the fi xing pin from sliding or damage it.
5.3 Mechanical stop
• Even if the switch is provided with a rubber bumper positioned between the actuator and the switch, the door must always be provided with an independent end-limit
mechanical stop on closing. All that to protect the device from being knocked when
the door is slammed hard.
• Do not use the switch as a mechanical door stop.
5.4 Impacts, vibrations and wear
• In case of any damage or wear, the entire device must be replaced.
• Avoid any collision with the device. Impacts and excessive vibrations may fail to
guarantee correct device operation.
5.5 Maintenance
Warning: Do not disassemble or try to repair the device. In case of any
malfunction or fault, replace the entire device.
Warning: Correct operation cannot be guaranteed when the device is
deformed or damaged.
The installer is responsible for establishing the sequence of functional tests to which
the installed device is to be subject for complete maintenance.
The testing sequence can vary according to machine complexity and circuit diagram,
therefore the functional test sequence detailed below is to be considered as minimal
and not exhaustive.
At least once a year or after prolonged stoppage, carry out the following checking
operations.
1) Lock the protection and start the machine. It must be impossible for the protection
to be opened.
2) With the machine stationary and the protection open, the machine must not be
allowed to start.
3) When the anti-panic release button (if fi tted) is pressed, the protection must open
freely and the machine must not start. Each time the release button is activated, the
machine must stop and the door must open immediately. The release button must
slide freely, without sticking, and be tightly screwed in. The signs placed inside the
machine, indicating the function of the release button (if fi tted), must be intact, clean
and clearly readable.
4) With the protection closed but not locked, the machine must not be allowed to start
(not applicable to safety output activation mode 2, see par. 3.3).
5) All external parts must be undamaged.
6) If the device is damaged, replace it completely.
7) The actuator must be securely locked to the door, make sure that none of the
machine operator’s tools can be used to disconnect the actuator from the door.
8) The device has been created for applications in dangerous environment, therefore
its operation is limited over time. 20 years after its production date, the device must
be totally replaced, even when still working. The production date is found next to the
product code (See paragraph 5.10 – MARKING)
5.6 Precautions during wiring
• Check that the power supply is correct before supplying the device with power.
• Keep the charge within the values specifi ed in the electrical operation categories.
• Disconnect the power supply before accessing the device connections.
• Only connect and disconnect the device when the power is off.
• Do not open the internal device cover under any circumstances.
• Discharge static electricity before handling the product, by making contact with a
metal mass connected to earth. Any strong ESD could damage the device.
• Power the safety switch and other connected devices from one single SELV-type
source and in conformity with the relevant standards.
• Always connect the protection fuse (or equivalent device) in series with the power
supply for each device (See paragraph 6.3 – ELECTRICAL DATA).
• The device contains two PUSH-IN spring-operated terminal boards for connecting
the following electrical leads:
Cross section of solid leads or leads with tips min. 0.34 mm
2
(AWG 22) max. 1.5 mm
2
(AWG 16).
Cross section of leads with pre-insulated tips min. 0.34 mm2 (AWG 22) max. 0.75 mm2
(AWG 18).
Stripping length of electrical leads: min. 8 mm - max. 12 mm
5.7 Additional prescriptions for safety applications with personal protection
functions
Provided that all previous requisites are fulfi lled, when the devices installed are
intended to ensure personal protection, the following additional prescriptions are also
to be observed:
• In all cases, device operation implies the knowledge and observance of the following
standards: EN 60947-5-3, EN ISO 13849-1, EN 62061, EN 60204-1, EN ISO 14119,
EN ISO 12100.
• Correct operation of safety devices must be checked periodically, at intervals
established by the machine manufacturer according to the machine danger level,
and in any case must be checked at least once a year.
5.8 Limitations of use
• The device can be used as a component within a system having safety category 4 /
PL e according to EN ISO 13849-1 standard and integrity level SIL CL 3 according
to EN 62061 standard.
• Use the device by following the instructions, keeping to its operating limits and
respecting the current safety standards.
• The devices have specifi c application limitations (minimum and maximum ambient
temperature, mechanical working life, protection degree etc.). These limitations are
met by the device only if considered individually and not as combined with others.
• The manufacturer’s liability is to be excluded in the following cases:
• Use not conforming to the intended purpose.
• Failure to observe safety instructions.
• Fitting operations not carried out by qualifi ed and authorized personnel.
• Omission of functional tests.
• For the cases listed below, contact our assistance service (See paragraph
SUPPORT):
• Nuclear power stations, trains, airplanes, motorcars, incinerators, medical
appliances or any other applications where the safety of two or more persons
depends on correct device operation.
• Cases not mentioned on the instruction sheet.
5.9 Functional tests before commissioning the device
The device installer is responsible for establishing the sequence of functional tests to
which the installed device is to be subject before machine commissioning. The testing
sequence can vary according to machine complexity and circuit diagram, therefore
the functional test sequence detailed below is to be considered as minimal and not
exhaustive.
1) Lock the protection and start the machine. It must be impossible for the protection
to be opened.
2) With the machine stationary and the protection open, the machine must not be
allowed to start.
3) When the escape release button (if fi tted) is pressed, the protection must open
freely and the machine must not start.
4) When the auxiliary release (if fi tted) is activated, the protection must open freely and
the machine must not start.
5) With the protection closed but not locked, the machine must not be allowed to start
(not applicable to safety output activation mode 2, see par. 3.3).
6) The actuator must be securely locked to the door; make sure that none of the
machine operator’s tools can be used to disconnect the actuator from the door.
5.10 Marking
The outside of the device is provided with external marking positioned in a visible
place.
Marking includes:
• Producer trademark
• Product code • Batch number and production date. Example: A14 NG1-411. The
fi rst character of the batch indicates the production month (A=January, B=February
etc…). The second and third characters indicate the production year (14 =2014,
15=2015 etc…).
6 TECHNICAL DATA
6.1 Housing
Metal housing, with powder coating.
Three M20x1.5 threaded cable inlets
Protection degree: IP67 according to EN 60529
IP69K according to ISO 20653
with cable gland (or other equivalent connection system) having equal or higher protection degree
6.2 General data
SIL (SIL CL) level: up to SIL 3 according to EN 62061
Performance Level (PL): up to PL e according to EN ISO 13849-1
Safety category: up to 4 according to EN ISO 13849-1
Interlocking with lock, with non-contact, coded: type 4 according to
EN ISO 14119
Coding level according to EN ISO 14119: low level with SCA actuator
high level with UCA actuator
PFHd: 8.07 E-10
MTTFd (single channel): 1883 years
DC: High
Mission time: 20 years
Ambient temperature: from -20°C to +50°C
Storing temperature: from -40°C to +75°C
Maximum operation altitude: 2000 m
Time for starting the switching operation: 2 s
Maximum activation frequency with
actuator lock and release: 600 operation cycles*/hour
Mechanical life: 1 million operation cycles*
Maximum activation speed: 0.5 m/s
Minimum activation speed: 1 mm/s
Fitting position: any
Maximum force before breakage F
1max
: 9750 N according to ISO 14119
Maximum holding force FZh: 7500 N according to ISO 14119
Clearance of locked actuator: 4 mm
Extraction force of released actuator: 30 N
*(One cycle of operations is equivalent to two operations, one for closing and one for opening as
prescribed by the EN 60947-5-1 standard)
6.3 Electrical data
Rated operation voltage Ue: 24 Vdc ±10% SELV
Operation current at Ue voltage:
- minimum: 40 mA
- with electromagnet activated: 0.4 A
- with electromagnet activated and all outputs at maximum power: 1.2 A
Rated insulation voltage U
i
: 32 Vdc
Thermal current Ith: 0.25 A
Rated impulse withstand voltage U
imp
: 1.5 kV
External protection fuse: 1.5 A type F
Overvoltage category: III
Electrical life: 1 million operation cycles
Solenoid insertion ratio: 100% ED
Electromagnet consumption: 9 W
Pollution degree: 3 according to EN 60947-1
6.3.1 Electrical data for IS1/IS2/I3/I4/I5/EDM inputs
Rated operation voltage Ue: 24 Vdc
Rated absorbed current: 5 mA
6.3.2 Electrical data for OS1/OS2 safe outputs
Rated operation voltage Ue: 24 Vdc
Type of output: PNP type OSSD
Maximum current per output Ie: 0.25 A
Minimum current per output I
e
: 0.5 mA
Category of use: DC13; Ue=24 Vdc, Ie=0.25 A
Short-circuit detection: Yes
Protection against overcurrent: Yes
Internal self-resetting protection fuse: 1.1 A
Electrical life: 1 million operation cycles
Time for deactivation impulses on safe outputs: <300 μs
Capacity admitted between output and output: <200 nF
Capacity admitted between output and earth: <200 nF
Length of connection cable, max. 50 m
Cable lengths and cross sections infl uence pulses to the safety outputs. The capacity
of the connection cables may not exceed the values listed above.
Response time for OS1 and OS2 safe outputs on input deactivation:
• Typical 7 ms
• Maximum 15 ms
Response time on door release:
• Typical 7 ms
• Maximum 12 ms
EDM input signal state change maximum delay: 500 ms
6.3.3 Electrical data for O3/O4 signalling outputs
Rated operation voltage U
e
: 24 Vdc
Type of output: PNP
Maximum current for Ie output: 0.1 A
Category of use: DC12; Ue=24 Vdc, Ie=0.1 A
Short-circuit detection: No
Protection against overcurrent: Yes
Internal self-resetting protection fuse: 1.1 A
6.3.4 RFID sensor data
Assured intervention distance Sao: 2 mm
Assured releasing distance Sar: 4 mm (actuator not locked)
10 mm (actuator locked)
Rated intervention distance Sn: 2.5 mm
Repeatability precision: ≤10% S
n
Differential travel: ≤ 20% S
n
Maximum switching frequency: 1Hz
Minimum distance between 2 identical devices to avoid reciprocal radio interferences:
2 mm
6.4 Conformity with the following standards:
EN ISO 14119, EN 60947-5-3, EN 60947-1, EN 60204-1, EN ISO 12100, EN 0529,
EN 61000-6-2, EN 61000-6-3, BG-GS-ET-19, IEC 61508, SN 29500, EN ISO 13849-1,
EN ISO 13849-2, EN 62061, EN 61326-1, EN 61326-3-1, EN 61326-3-2,
ETSI 301 489-1, ETSI 301 489-3, ETSI 300 330-2, UL 508, CSA 22.2 No.14
6.5 Conforming to the requirements prescribed by:
2006/42/EC Machine Directive
2004/108/EC Electromagnetic compatibility
R&TTE 1999/05/EC Directive
FCC Part 15 Statements: 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.
7 DISPOSAL
At the end of service life product must be disposed of properly, according to the rules
in force in the country in which the disposal takes place.
8 SUPPORT
Telephone number for 24-hour standby service: +49 (0) 7021 573-0
Service hotline: +49 (0) 8141 5350-111
Monday to Thursday, 8.00 a.m. to 5.00 p.m. (UTC+1)
Friday, 8.00 a.m. to 4.00 p.m. (UTC +1)
E-mail: service.protect@leuze.de
Return address for repairs:
Service Center Leuze electronic GmbH + Co. KG
In der Braike 1
D-73277 Owen / Germany
9 EC CONFORMITY DECLARATION
Leuze electronic GmbH + Co. KG
In der Braike 1, D-73277 Owen/Germany
We hereby declare that the L300 safety locking device (see name plate for part no.)
in the form in which it is marketed by us conforms with the relevant safety and health
requirements of the listed EC directives (see section 6.4, including all changes) and
that the listed standards (see section 6.5, including all changes) were used in its design
and construction.
Owen, 2015/12
Ulrich Balbach, Managing Director
10 DIMENSIONAL DRAWINGS
L300-MxxC3-xxxxx
46
5.6 144 61.9
211.5
40.4302.4
5.4
40
24.1
18.3
46
40
38.8
L300-MxxC3-xxxxx-KYPB
68
5.6 144 83.9
233.5
40.4302.4
5.4
40
5
24.1
18.3
46
40
38.8
38.1
22.8
Ø
38
30
39.3
Ø
21.4
L300-MxxC3-xxxxx-PB
68
40.4302.4
5.4
40
24.1
18.3
46
40
38.8
39.3
5.6
144
83.9
233.5
5
Ø
38
30
Ø
21.4
AC-L300-xCA
16
Ø15
32.1
29
21
5.5
21.6
5.5
40
R >80
59.4
21 38.4
48.1
5.2
5.4
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