Advertisement
Available languages
Available languages
Operating Instructions
Safety Switch NZ.D.../NZ.W.../NZ.R...
Scope
These operating instructions are valid for all NZ.D.../
NZ.W.../NZ.R... These operating instructions, the
document Safety information and maintenance and
any enclosed data sheet form the complete user
information for your device.
Supplementary documents
The overall documentation for this device consists
of the following documents:
Document title
Contents
(document number)
Safety information
Basic safety information
(2525460)
Operating instructions
(this document)
(2074549)
Declaration of con-
Declaration of conformity
formity
Any additions to the
Take any associated additions to
operating instructions
the operating instructions or data
sheets into account.
Important!
Always read all documents to gain a complete
overview of safe installation, setup and use of
the device. The documents can be downloaded
from www.euchner.com. For this purpose, enter
the doc. no. or the order number for the device
in the search box.
Correct use
Safety switches series NZ are interlocking devices
without guard locking (type 1). The actuator is
uncoded (e.g. dog). In combination with a movable
guard and the machine control, this safety compo-
nent prevents dangerous machine functions from
occurring while the guard is open. A stop command
is triggered if the guard is opened during the dan-
gerous machine function.
This means:
Starting commands that cause a dangerous ma-
f
chine function must become active only when the
guard is closed.
Opening the guard triggers a stop command.
f
Closing a guard must not cause automatic starting
f
of a dangerous machine function. A separate start
command must be issued. For exceptions, refer to
EN ISO 12100 or relevant C-standards.
Devices from this series can be used as safe position
encoders.
Before the device is used, a risk assessment must
be performed on the machine, e.g. in accordance
with the following standards:
EN ISO 13849-1
f
EN ISO 12100
f
IEC 62061
f
Correct use includes observing the relevant require-
ments for installation and operation, particularly
based on the following standards:
EN ISO 13849-1
f
EN ISO 14119
f
EN 60204-1
f
Important!
The user is responsible for the proper integration
f
of the device into a safe overall system. For this
purpose, the overall system must be validated,
e.g. in accordance with EN ISO 13849-2.
If the simplified method according to section 6.3
f
of EN ISO 13849-1:2015 is used for determining
the Performance Level (PL), the PL might be re-
duced if several devices are connected in series.
Logical series connection of safe contacts is
f
possible up to PL d in certain circumstances.
More information about this is available in
ISO TR 24119.
If a data sheet is included with the product, the
f
information on the data sheet applies in case of
discrepancies with the operating instructions.
Safety precautions
WARNING
Danger to life due to improper installation or due
to bypassing (tampering). Safety components
perform a personnel protection function.
Safety components must not be bypassed,
f
turned away, removed or otherwise rendered
ineffective. On this topic pay attention in partic-
ular to the measures for reducing the possibility
of bypassing according to EN ISO 14119:2013,
section 7.
Mounting, electrical connection and setup only
f
by authorized personnel possessing special
knowledge about handling safety components.
www
Function
www
The devices are used for positioning and control
applications in mechanical and systems engineering.
www
The switching contacts are actuated when the actu-
ating element is moved from the free position to the
end position. The safety contacts
opened in this process (see Fig. 2).
Switching states
The detailed switching states for your switch can
be found in Fig. 2. All available switching elements
are described there.
Actuating element in free position
The safety contacts
are closed.
Actuating element in end position
The safety contacts
are open.
Mounting
NOTICE
Device damage due to improper mounting and
unsuitable ambient conditions
Safety switches and actuators must not be used
f
as an end stop.
Observe EN ISO 14119:2013, sections 5.2 and
f
5.3, for information about mounting the safety
switch and the actuator.
Observe EN ISO 14119:2013, section 7, for
f
information about reducing the possibilities for
bypassing an interlocking device.
Protect the switch head against damage.
f
The specified IP degree of protection is applica-
f
ble only if the housing screws, cable entries and
plug connectors are properly tightened. Observe
the tightening torques.
Changing the actuating direction
Fig. 1: Changing the actuating direction
1. Remove the screws from the actuating head.
2. Set the required direction.
3. Tighten the screws with a torque of 1.2 Nm.
4
Electrical connection
WARNING
Loss of the safety function due to incorrect
connection.
Use only safe contacts (
f
Strip the insulation from the ends of the individual
f
wires over a length of 6
contact.
Use of the safety switch as an interlocking
device for personnel protection
At least one contact
the position of the guard (for terminal assignment,
see Fig. 3).
The following information applies to devices
with plug connector:
Check that the plug connector is sealed.
f
The following information applies to devices
with cable entry:
are positively
1. Use a suitable tool to open the desired inser-
tion opening.
2. Fit the cable gland with the appropriate degree
of protection.
3. Connect and tighten the terminals with 0.5 Nm
(1 Nm for ES511) (for terminal assignment,
see Fig. 3).
4. Check that the cable entry is sealed.
5. Close the switch cover and screw in place
(tightening torque 1.2 Nm).
Function test
WARNING
Fatal injury due to faults during the function test.
Before carrying out the function test, make sure
f
that there are no persons in the danger zone.
Observe the valid accident prevention regula-
f
tions.
Check the device for correct function after installa-
tion and after every fault.
Proceed as follows:
Mechanical function test
The actuating element must move easily. Close the
guard several times to check the function.
Electrical function test
1. Switch on operating voltage.
2. Close all guards.
The machine must not start automatically.
¨
3. Start the machine function.
4. Open the guard.
The machine must switch off and it must not be
¨
possible to start it as long as the guard is open.
Repeat steps 2 - 4 for each guard.
) for safety functions.
mm to ensure a safe
±1
must be used. This signals
Advertisement
