EUCHNER ESL-IH-AR - Manual (Page 3)

Operating Instructions ESL
3
Correct use
The safety system ESL is an interlocking device without guard locking.
In combination with a safety guard, this safety component prevents dangerous
machine movements from being performed for as long as the safety guard is
opened. A stop command is triggered if the safety guard is opened during the
dangerous machine function.
Before safety switches 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
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, for example
Ì EN ISO 13849-1, 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
Ì EN 60947-5-3, Specification for low-voltage switchgear and controlgear. Con-
trol circuit devices and switching elements. Requirements for proximity devices
with defined behavior under fault conditions
The safety system ESL can only be combined with the intended modules in the
ESL system family.
On the modification of system components, EUCHNER provides no warranty for function.
Several devices are only allowed to be connected in series using devices intended
for series connection with the ESL. Check the operating instructions for the related
device. A combination with other ESL devices or devices from other manufacturers
is not allowed.
A maximum of 20 devices are allowed to be operated in a switch chain.
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
Technical data).
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 2.47x10 -8 /h.
Ì When up to 11 devices are connected in series, these limit values can be
assumed for the entire switch chain as a subsystem. As a subsystem, this
switch chain achieves PL e.