6.2 Using in lifts
When installing in a lift, the locking device for the landing doors must also be used
acc. to EN 81-20 and EN 81-50, which impose additional conditions:
- The closed position of the landing door must be monitored by an additional, sepa-
rate, electric security device;
- It must be ensured via the lift control or a positively-driven safety circuit that the
unlocking of a landing door can only be triggered if the car is at a standstill or is
stopped within the unlocking zone of the door (generally ±20 cm from the landing
level). This can be performed, e.g., by releasing the electric unlocking command
via an auxiliary circuit that consists of an electric contact in series with the electro-
magnet of the locking device; the electric contact of the auxiliary circuit is closed
by a position sensor that is actuated by a slide on the car (this ensures that only the
respective solenoid is released, and only this solenoid receives the command that
unlocks the locking device). Alternatively, a safety circuit can be used that detects
and monitors the position of the car. The control logic (e.g., a PLC) then allows the
unlocking device to be unlocked only on the respective floor (separate lines are to
be provided for the unlocking solenoid for each unlocking device);
- In the case of hinged doors, locking is to be effected as near as possible to the verti-
cal closing edge(s) of the doors and maintained properly even if the frame to which
the locking device is secured is deflected (in the case of a flap-type locking device,
locking can be effected on the upper edge of the door);
- In the case of landing doors that are actuated via the car door, the landing door must
close and lock automatically if the car is not present;
- The emergency unlocking device with triangular key must not be located more than
2.00 m above the landing level.
6.3 Do not use in the following environments
Attention: Do not use in environments where dust and dirt may in any way
penetrate the head and deposit there. In particular where metal dust, concrete or
chemicals are spread.
- In environments where continuous temperature fluctuations cause the formation of
condensation inside the device.
- In environments where the application causes the device to be subjected to strong
impacts or vibrations.
- In environments containing explosive or inflammable gases or dusts.
- In environments where ice can form on the device.
- In environments containing strongly aggressive chemicals, where the products used
coming into contact with the device may impair its physical or functional integrity.
- Prior to installation, the installer must always ensure that the device is suitable for
use under the ambient conditions on site.
6.4 Mechanical stop
Attention: The door/guard must always be provided with an independent end-
limit mechanical stop at limit of travel.
Do not use the locking device as mechanical stop for the door/guard.
6.5 Maintenance and functional tests
Attention: Do not disassemble or try to repair the locking device. In case of any
malfunction or failure, replace the entire locking device.
Attention: In case of damages or wear it is necessary to change the whole lock-
ing device including its actuator. Correct operation cannot be guaranteed if the locking
device is deformed or damaged.
- The installer of the locking device is responsible for performing the sequence of
functional tests to which the device is to be subjected before the machine/lift is start-
ed up and during the maintenance intervals.
- The sequence of the functional tests can vary depending on the machine complexity
and circuit diagram, therefore the functional test sequence detailed below is to be
considered as minimal and not exhaustive.
- Perform the following sequence of checks before the machine/lift is commissioned
and at least once a year (or after a prolonged shutdown):
1) Lock the door by closing it and call the lift from another floor. It must not be pos-
sible to open the landing door on a given floor unless the car is stopped on this floor.
2) With the door open, call the lift from a different floor. The machine/lift must not
start.
3) Check for correct alignment between actuator and locking device. If the actuator
inlet is worn, replace the entire device and actuator assembly.
4) Upon actuation of the emergency unlocking device with the triangular key, the door
must open on its own and the machine/lift must not start.
5) If the door is closed but not locked, it must not be possible for the machine/lift to
start.
6) There must be no signs of damage on the exterior of the locking device. It is other-
wise to be completely replaced.
7) The actuator must be securely locked to the panel or to the guard. Make sure that
none of the operator's tools can be used to disconnect the actuator from the door/
guard.
8) Check whether the panel is equipped with another safety contact for detecting
the closed position of the panel so that a single operation (e.g., manual insertion of
an actuator for simulating closing and locking) does not result in the lift being able to
depart (acc. to section 5.3.10 of EN 81-20:2020).
9) If you have difficulty inserting the actuator in the locking device, never apply oil or
grease to the head of the locking device; instead, check the actuator alignment as
described in paragraph INSTALLATION INSTRUCTIONS. If it is still difficult to insert
the actuator, replace the entire locking device.
10) The locking device is also suitable for use in dangerous environments and there-
fore has a limited service life. Although still functioning, after 20 years from the date
of manufacture the locking device must be replaced completely. The date of manufac-
ture is placed next to the product code (see paragraph MARKINGS).
6.6 Wiring
Attention: Check that the supply voltage is correct before powering the locking
device.
- Keep the charge within the values specified in the electrical operation categories.
- Only connect and disconnect the locking device when the power is off.
- Do not open the internal cover of the locking device under any circumstances.
- Always connect the protection fuse (or equivalent device) in series to the safety
electrical contacts.
- Always connect the protection fuse (or equivalent device) in series with the power
supply for each device (see paragraph ELECTRICAL DATA).
- Comply with the minimum and maximum sections of electrical conductors admitted
by terminals. The locking device contains two internal screw terminals for connecting
the following wire types:
min. 1 x 0.34 mm
(1 x AWG 22)
2
max. 2 x 1.5 mm
2
(2 x AWG 16)
- The stripping length of the cable or wire end sleeve (x) must be 7 mm.
- At the end of the wiring, check that no contaminating element has been introduced
inside the locking device.
- Before closing the locking device cover, verify the correct positioning of the gaskets.
- Verify that the electrical cables, wire-end sleeves, cable numbering systems and any
other parts do not obstruct the cover from closing correctly or if pressed between
them do not damage or compress internal parts.
- During and after installation do not pull the electrical cables connected to the lock-
ing device. If traction is applied to the cables (not supported by an appropriate cable
gland) internal parts of the locking device may be damaged.
6.7 Additional requirements for safety applications with operator protection
functions
Provided that all previous requirements for the devices are fulfilled, for installations
with operator protection function additional requirements must be observed.
- Utilization implies knowledge of and compliance with following standards: EN 81-20,
EN 81-50, EN 60947-5-3, EN ISO 13849-1, EN IEC 62061, EN 60204-1, EN ISO 14119,
EN ISO 12100.
6.8 Limits of use
- Use the locking device following the instructions, complying with its operation limits
and the applicable safety regulations.
- The locking devices have specific application limits (min. and max. ambient tempera-
ture, mechanical endurance, IP protection degree, etc.) These limitations are met by
the locking device only if considered individually and not as combined with each other.
- The manufacturer's liability is to be excluded in the following cases:
1) Use not conforming to the intended purpose;
2) Failure to adhere to these instructions or regulations in force;
3) Mounting not performed by qualified and authorised personnel;
4) Omission of functional tests.
- For the cases listed below, before proceeding with the installation contact our tech-
nical assistance service (see paragraph TECHNICAL SUPPORT):
a) In nuclear power stations, trains, airplanes, cars, incinerators, medical devices or
any application where the safety of two or more persons depend on the correct op-
eration of the device;
b) Applications not contemplated in this instruction manual.
7 MARKINGS
The outside of the device is provided with external marking positioned in a visible
place. Marking includes:
- Producer trademark;
- Product code;
- Batch number and date of manufacture. Example: A23 FG1-123456. The batch's first
letter refers to the month of manufacture (A=January, B=February, etc.). The second
and third letters refer to the year of manufacture (23 = 2023, 24 = 2024, etc...);
- Certificate number of the type examination certificate.
8 TECHNICAL DATA
8.1 Housing
Metal head and housing, baked powder coating.
Three threaded conduit entries:
Protection degree:
8.2 General data
The device can be used in applications with an interlocking function. The follow-
ing functional safety levels according to EN ISO 13849-1 and EN IEC 62061 can be
achieved:
- With one device applied to the door/guard, with no supervisory logic unit:
- With one device applied to the door/guard, with an adequate supervisory logic unit
and with the possibility of excluding the fault in the mechanical part actuating the
device:
- With two devices applied to the same door/guard and with an adequate supervisory
logic unit:
Attention: Any connection in series of the electrical safety contacts of two or
more devices decreases the system's self-monitoring capacity, see ISO/TR 24119.
Interlock with mechanical lock, coded: type 2 acc. to EN ISO 14119
Level of coding:
Safety parameters:
B
:
10D
Mission time:
7/24
x
x
M20x1.5
IP67 acc. to EN 60529
with cable gland of equal
or higher protection degree
category 1, PL c, SIL 1;
category 3, PL d, SIL 2;
category 4, PL e, SIL 3.
low acc. to EN ISO 14119
5,000,000 for NC contacts
20 years