Operating Instructions
Non-Contact Safety Switch CES-I-AR-.-C04-…
8
(translation of the original operating instructions) 2119563-08-07/17
7. ATEX
Safety switches from series CES-I-AR-.-C04-… can be used in potentially explosive atmospheres when equipped with housing
guard AM-C-C04-EX-137528 available as an accessory.
Correct use includes observing the relevant requirements for installation and operation, particularly based on the following
standards:
Ì
EN 1127-1, Explosive atmospheres – Explosion prevention and protection – Part 1: Basic concepts and methodology
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EN 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements
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EN 60079-11, Explosive atmospheres – Part 11: Equipment protection by intrinsic safety “i”
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EN 60079-14, Explosive atmospheres – Part 14: Electrical installations design, selection and erection
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EN 60079-15, Explosive atmospheres - Part 15: Equipment protection by type of protection “n”
Ì
EN 60079-31, Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure “t”.
The safety switch is allowed to be operated only in conjunction with the intended actuator CES-A-BBN-C04-EX-137527 from
EUCHNER and the related connection components from EUCHNER. On the use of different actuators or other connection
components, EUCHNER provides no warranty for safe function.
Safety switches with ATEX identification marking from EUCHNER are not safety devices as defined by the ATEX
Directive.
Important!
In order to achieve the explosion protection stated, all the conditions in the operating instructions
must be met. HIGH RISK product.
Devices with ATEX rating may be operated only with actuators that also have an ATEX rating for the
same zone.
ATEX rating
Housing guard AM-C-C04-EX-137528 in combination with safety switch CES-I-AR-.-C04-…
II3G Ex nA IIB T6 Gc X
II3D Ex tc IIIC T80°C Dc X
Actuator CES-A-BBN-C04-EX-137527
II3G Ex ic IIC T6 Gc
II3D Ex ic IIIC T85°C Dc X
X
= It is essential to fit the housing guard as shock protection. All the electrical connections must either be isolated from
the mains supply by a safety transformer according to IEC 61558-2-6 with limited output voltage in the event of a fault,
or by other equivalent isolation measures (PELV).
Permanently and inseparably connect the actuator using the supplied non-removable screws.
To prevent electrostatic charging:
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Do not subject the switch to any processes that generate a large amount of charge.
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Clean only with a damp cloth!
Protection against mechanical effects on the switch:
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Fit the switch on a flat surface. Install the switch so that the rear housing is entirely covered in order to protect it from
mechanical damage through impact.
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All connection cables and plug connectors must be laid such that they are protected against mechanical damage.
Ì
The connection cable must be laid rigidly; it is not permissible to lay the cable so that it can move (e.g. in a drag chain).
No tools (e.g. grinding or cutting devices) in accordance with DIN EN 1127-1, Annex A, point b) may be used.
If damage or wear is found, the complete switch including housing guard and actuator must be replaced. Replacement of
individual parts or assemblies is not permitted.