3
Safety Information and Maintanance
(Part of the Operating Instructions for Safety Switch CET/CTP (AS))
Scope
This safety information is part of the operating
instructions for safety switch CET or CTP of the
output families -AS.
Correct use
The aforementioned safety switches are operated
as slaves on the safety bus AS-Interface Safety at
Work and function as interlocking devices with guard
locking (type 4). Devices with unicode evaluation
possess a high coding level, devices with multicode
evaluation possess a low coding level.
For guard locking for personnel protection the
following applies:
In combination with a movable safety guard and the
machine control, this safety component prevents the
safety guard from being opened while a dangerous
machine function is being performed.
This means:
f
Starting commands that cause a dangerous ma-
chine function must become active only when the
safety guard is closed and locked.
f
The guard locking device must not be unlocked
until the dangerous machine function has ended.
f
Closing and locking a safety guard must not cause
automatic starting of a dangerous machine func-
tion. A separate start command must be issued.
For exceptions, refer to EN ISO 12100 or relevant
C-standards.
For guard locking for process protection the
following applies:
In combination with a movable safety guard and
the machine control, this safety component pre-
vents dangerous machine functions from occurring
while the safety guard is open. A stop command is
triggered if the safety guard is opened during the
dangerous machine function. With inactive guard
lock monitoring, guard locking must be used only
for process protection.
This means:
f
Starting commands that cause a dangerous ma-
chine function must become active only when the
safety guard is closed.
f
Opening the safety guard triggers a stop com-
mand.
f
Closing a safety guard must not cause automatic
starting of a dangerous machine function. A
separate start command must be issued. For
exceptions, refer to EN ISO 12100 or relevant
C-standards.
Before the device is used, a risk assessment must
be performed on the machine, e.g. in accordance
with the following standards:
f
EN ISO 13849-1, Safety of machinery – Safety-re-
lated parts of control systems – Part 1: General
principles for design
f
EN ISO 12100, Safety of machinery – Basic
concepts – General principles for design – Risk
assessment and risk reduction
f
IEC 62061, Safety of machinery – Functional
safety of safety-related electrical, electronic and
programmable electronic control systems
Correct use includes observing the relevant require-
ments for installation and operation, particularly
based on the following standards:
f
EN ISO 13849-1, Safety of machinery – Safety-re-
lated parts of control systems – Part 1: General
principles for design
f
EN ISO 14119 (supersedes EN 1088), Safety of
machinery – Interlocking devices associated with
guards – Principles for design and selection
f
EN 60204-1, Safety of machinery – Electrical
equipment of machines – Part 1: General re-
quirements
The safety switch must be used only in conjunction
with the designated actuator from EUCHNER. On
the use of different actuators, EUCHNER provides
no warranty for safe function.
Important!
f
Correct use requires observing the permissible
operating parameters (see Technical data).
f
The user is responsible for the proper integration
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.
Exclusion of liability and warranty
In case of failure to comply with the conditions for
correct use stated above, or if the safety instruc-
tions are not followed, or if any servicing is not
performed as required, liability will be excluded and
the warranty void.
General safety instructions
Safety switches fulfill personal protection functions.
Incorrect installation or tampering can lead to fatal
injuries to personnel.
Check the safe function of the safety guard par-
ticularly
f
after any setup work
f
after the replacement of a system component
f
after an extended period without use
f
after every fault
Independent of these checks, the safe function of the
safety guard should be checked at suitable intervals
as part of the maintenance schedule.
WARNING
Danger to life due to improper installation or due
to bypassing (tampering). Safety components
perform a personal protection function.
f
Safety components must not be bypassed,
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.
f
The switching operation must be triggered only
by actuators designated for this purpose.
f
Prevent bypassing by means of replacement
actuators (only for multicode evaluation). For this
purpose, restrict access to actuators and to keys
for releases, for example.
f
Mounting, electrical connection and setup only
by authorized personnel possessing the following
knowledge:
- specialist knowledge in handling safety com-
ponents
- knowledge about the applicable EMC regu-
lations
- knowledge about the applicable regulations on
occupational safety and accident prevention.
Important!
Prior to use, read the operating instructions and
keep these in a safe place. Ensure the operating
instructions are always available during mounting,
setup and servicing. EUCHNER cannot provide any
warranty in relation to the readability of the CD for
the storage period required.
For this reason you should archive a printed copy
of the operating instructions. You can download
the operating instructions from www.euchner.de.
Operating instructions on CD/DVD
Each device is supplied with operating instructions
on CD/DVD, which contain detailed information on
the overall system. The following system require-
ments must be met to be able to display or print
the document:
f
PC with PDF reader installed
f
CD/DVD drive
Opening and printing the documents
Important: The autoplay function for the drive must
be enabled (see operating system help), and you
will need an up-to-date PDF reader.
1. Insert CD/DVD
¨
¨
Selection table is opened in the browser
2. Click the related document for your system
¨
¨
The document is opened and can be printed.
Mounting, setup and
troubleshooting
For detailed instructions on mounting, setup and
troubleshooting, please refer to the operating
instructions on the CD/DVD.
CAUTION
Safety switches must not be bypassed (bridging
of contacts), turned away, removed or otherwise
rendered ineffective.
f
Observe EN ISO 14119:2013, section 7, for
information about reducing the possibilities for
bypassing an interlocking device.
f
The following applies to CET: The safety switch
must be mounted with the ramp facing down
or horizontal in order to achieve category 4 in
accordance with EN 13849-1 for safety guard
position monitoring.
NOTICE
Risk of damage to equipment and malfunctions as
a result of incorrect installation.
f
Safety switches and actuators must not be used
as an end stop.
f
Observe EN ISO 14119:2013, sections 5.2 and
5.3, for information about fastening the safety
switch and the actuator.
f
Protect the switch head against damage, as well
as penetrating foreign objects such as swarf,
sand and blasting shot, etc.
f
Observe the min. door radii (see associated
operating instructions).
Electrical connection
For detailed information on the electrical connec-
tion, please refer to the operating instructions on
the CD/DVD.
1
AS-Int
2
Auxiliary voltage 0 V
3
AS-Interface -
4
Auxiliary voltage 24 V
View of plug connector
Safety switch
4
3
1
2
