13/42
Attention: In case of damages or wear it is necessary to change the whole de-
vice including its actuator. Correct operation cannot be guaranteed if the device
is deformed or damaged.
- The device installer is responsible for establishing the sequence of functional tests
to which the device is to be subjected before the machine is started up and during
maintenance intervals.
- The sequence of the functional tests can vary depending on the machine complex-
ity 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 is commissioned and
at least once a year (or after a prolonged shutdown):
1) Lock the protection and start the machine. The guard must not open when the
actuator is pulled with a holding force of FZh.
2) Try to start the machine while the guard is open. The machine must not start.
3) Check for correct alignment between actuator and device. If the actuator inlet is
worn, replace the entire device and actuator assembly.
4) When the escape release button (if present) is pressed, the protection must
open freely and the machine must not start. Each time the escape release but-
ton is activated, the machine must stop and the guard must open immediately.
The escape release button must slide freely and be tightly screwed in. The signs
placed inside the machine, indicating the function of the escape release button
(if present), must be intact, clean and clearly readable.
5) When the auxiliary release (if present) is activated, the protection must open
freely and the machine must not start (for devices with mode 3 check that the
machine shows the expected behaviour).
6) If the guard is closed but not locked, it must not be possible for the machine to
start (not applicable in mode 2, for devices with mode 3 check that the machine
shows the expected behaviour).
7) All external parts must be undamaged.
8) If the device is damaged, replace it completely.
9) 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.
10) The device has been created for applications in dangerous environments, there-
fore it has a limited service life. Although still functioning, after 20 years from
the date of manufacture the device must be replaced completely. The date of
manufacture is placed next to the product code (see paragraph MARKINGS).
6.5 Wiring
Attention: Check that the supply voltage is correct before powering the device.
- Keep the charge within the values specified in the electrical operation categories.
- Only connect and disconnect the device when the power is off.
- Do not open the device for any reason.
- Discharge static electricity before handling the product by touching a metal mass
connected to earth. Any strong electrostatic discharge could damage the device.
- Power the safety device and the other components connected to it from a single
SELV/PELV source and in accordance with the applicable standards.
- Always connect the protection fuse (or equivalent device) in series with the power
supply for each device.
- During and after the installation do not pull the electrical cables connected to the
device.
- For devices with integrated cable, the free end of the cable (if it does not have a
connector) must be properly connected inside a protected housing. The cable must
be adequately protected from cuts, impacts, abrasion, etc.
6.6 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 60947-
5-3, EN ISO 13849-1, EN IEC 62061, EN 60204-1, EN ISO 14119, EN ISO 12100.
6.7 Limits of use
Attention: The device can be used in safety applications where deactivation of
the safety outputs (OS1 and OS2) represents elimination of the hazard.
Applications in which the hazard persists even after the device has deactivat-
ed its safety outputs, or when it has no power supply, fall outside the functions
performed by this device and associated risks must be assessed by the ma-
chine manufacturer.
- By connecting the two solenoid activation inputs IE1, IE2 on two distinct channels
to two OSSD safety outputs of a safety PLC or safety module, the device can be
used as a component with locking functions in a system with safety category 4 /PL
e according to EN ISO 13849-1:2023 and integrity level “Maximum SIL 3” according
to EN IEC 62061:2021.
- By connecting both solenoid activation inputs IE1 and IE2 to the same channel, the
device can be used as a component with locking functions in a system with safety
category 2 / PL d according to EN ISO 13849-1:2023 and integrity level “Maximum
SIL 2” according to EN IEC 62061:2021. Any fault on the single activation line of the
solenoid can cause the actuator to be released, and the safety outputs switched off.
- Use the device following the instructions, complying with its operation limits and
the applicable safety regulations.
- The devices have specific application limits (min. and max. ambient temperature,
mechanical endurance, IP protection degree, etc.) These limitations are met by the
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 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
operation of the device;
b) Applications not contemplated in this instruction manual.
- Permanent application of maximum holding force F
zh
is not permitted.
- For machines with inertia, the machine manufacturer must take into consideration
the time it takes to come to a standstill.
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 NS1-123456. 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…).
8 TECHNICAL DATA
8.1 Housing
Housing made of glass fiber reinforced technopolymer, self-extinguishing and shock-
proof
Protection degree: IP67 acc. to EN 60529, IP69K acc. to ISO 20653 (protect the ca-
bles from direct high-pressure and high-temperature jets)
Protection degree for switch with integrated control devices: IP65 acc. to EN 60529
8.2 General data
Interlock with lock, no contact, coded: type 4 acc. to EN ISO 14119
Coding level acc. to EN ISO 14119: low with F40 actuator
High with F41 actuator
Safety parameters SIL* PL* Cat.*
DC
PFH
D
MTTF
D
Monitoring function: actuator locked - Mode 1 3 e 4 High 1.23E-09 2657
Monitoring function: actuator present - Mode 2 3 e 4 High 1.22E-09 1840
Monitoring function: actuator locked - Mode 3 2 d 2 High 1.50E-09 2627
Monitoring function: actuator present - Mode 3 2 d 2 High 1.49E-09 3987
Dual-channel control for locking function of the actuator 3 e 4 High 2.04E-10 2254
Single-channel control for locking function of the actuator 2 d 2 High 2.04E-10 2254
(*) Values that can be achieved by the device. The final values of the safety application at the ma-
chine are also always dependent on external devices, the circuit and the wiring.
Mission time: 20 years
Ambient temperature: -20°C … +50°C
Storage temperature: -40°C … +75°C
Max. operating altitude: 2000 m
Start time on switching on: 2 s
Timeout time t
TO
: 20 s (for versions NS •7••••••)
Max. actuation frequency with actuator lock
and release: 600 operating cycles/hour
Mechanical endurance: 1 million operating cycles
Max. actuation speed: 0.5 m/s
Min. actuation speed: 1 mm/s
Mounting position: any
Maximum force before breakage F
1max
: 2100 N acc. to EN ISO 14119
Max. holding force F
Zh
: 1615 N acc. to EN ISO 14119
Maximum clearance of locked actuator: 4 mm
Released actuator extraction force: ~ 20 N
8.3 Electrical data
8.3.1 Power supply electrical data
Rated operating voltage U
e
: 24 Vdc ±10% SELV/PELV
Operating current at U
e
voltage:
- minimum: 40 mA
- with activated solenoid: max. 0.4 A
- with activated solenoid and all outputs at
maximum power: 1.2 A
Rated insulation voltage U
i
: 32 Vdc
Rated impulse withstand voltage U
imp
: 1.5 kV
External protection fuse: 2 A type gG or equivalent device
Overvoltage category: III
Electrical endurance: 1 million operating cycles
Solenoid duty cycle: 100% ED
Maximum solenoid consumption: 9 W
Pollution degree: 3 acc. to EN 60947-1
8.3.2 Electrical data of IS1/IS2/I3/IE1/IE2/I5/EDM inputs
Rated operating voltage U
e1
: 24 Vdc
Rated current consumption I
e1
: 5 mA
8.3.3 Electrical data of OS1/OS2 safety outputs
Rated operating voltage U
e2
: 24 Vdc
Output type: PNP type OSSD
Maximum current per output I
e2
: 0.25 A
Minimum current per output I
m2
: 0.5 mA
Thermal current I
th2
: 0.25 A
Utilization category: DC13; U
e2
=24 Vdc, I
e2
=0.25 A
Short circuit detection: Yes
Overcurrent protection: Yes
Internal self-resettable protection fuse:
1.1 A
Duration of the deactivation impulses at the
safety outputs: < 300 µs
Permissible maximum capacitance between out-
puts:
< 200 nF
Permissible maximum capacitance between out-
put and ground:
< 200 nF
Activation time of safety outputs OS1 and
OS2 after deactivation of inputs: typically 7 ms, max. 15 ms
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