EUCHNER CETx-AS-xxx-CB-xxx (Multicode) - Manual (Page 3)

Operating Instructions Safety Switch CET.-AS-...-CB-...
3
Correct use
The safety switch CET.-AS is operated as a slave on the safety bus AS-Interface
Safety at Work and functions as an electromagnetic interlock device with guard
locking.
In combination with a safety guard
and the machine control, this safety component
prevents the safety guard from being opened while a dangerous machine move-
ment is being performed.
For the control system, this means that
Ì starting commands which cause hazardous situations must become active only
when the safety guard is in protective position and the guard locking is in locked
position. The locked position of the guard locking must be released only when
the hazardous situation is no longer present.
Before safety components are used, a risk assessment must be performed on the
machine, e.g., in accordance with
Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design, Annex B
Ì EN ISO 12100, Safety of machinery – General principles for design – Risk as-
sessment and risk reduction.
Ì IEC 62061, Safety of machinery. Functional safety of safety-related electrical,
electronic and programmable electronic control systems.
Correct use includes compliance with the relevant requirements for installation
and operation, in particular
Ì EN ISO 13849, Safety of machinery. Safety related parts of control systems.
General principles for design
Ì EN 1088, Safety of machinery. Interlocking devices associated with guards.
Principles for design and selection
Ì EN 60204-1, Safety of machinery. Electrical equipment of machines. General
requirements.
The safety switch must be used only in conjunction with the designated CET ac-
tuator from EUCHNER. On the use of different actuators, EUCHNER provides no
warranty for safe function.
Important:
Ì The user is responsible for the integration of the device into a safe overall
system. For this purpose, the overall system must be validated, e.g. in ac-
cordance with EN ISO 13849-2.
Ì Correct use requires observing the permissible operating parameters (see
section Technical data page 22).
Ì If a product data sheet is included with the product, the information on the data
sheet applies in case of discrepancies with the operating instructions.
Ì In the estimation of the PL for the overall system, a maximum value of
100 years can be assumed for the MTTF
d
according to the limit value in
EN ISO 13849-1:2008, section 4.5.2. This corresponds to a minimum value
for the PFH
d
of 2.47 x 10 -8 /h.
Ì If the simplified method according to section 6.3 EN ISO 13849:2008-12 is
used for validation, the Performance Level (PL) may be reduced if several
devices are connected one after the other.
Ì It is only allowed to use components that are permissible in accordance with
the table below.