Proper Use - ASO Safety Solutions SK 41 Manuel D'utilisation

SK 41 Safety Relay Safety Relay Relay
• The protection must only be installed and commissioned by professionals familiar with these operating
instructions and the applicable operational safety and accident prevention regulations. All of the instruc-
tions provided in these operating instructions must be observed and followed.
• All electrical work must only be performed by skilled electricians.
• All relevant electrical engineering and Employer's Liability Insurance Association safety regulations must
be observed.
• During work on the switching unit, it is to be switched to zero potential and checked to ensure that it is
at zero potential and protected against being restarted.
• If the potential-free contacts of the relay switching contacts are supplied externally with a dangerous
voltage, make certain that these outputs are also switched off during work on the switching unit.
• The switching unit does not contain any components that require servicing by the user. Unauthorised
conversions and repairs made to the switching unit will void all guarantees and the manufacturer's
liabilit��.
For the design of the safety system to conform to engineer standards, the plant
must be professionally inspected at appropriate intervals for proper function.
The inspection must be documented in such a way as to be comprehensible at all
times.
3. General
The SK 41 switching unit, designed with one channel, is used for evaluating safety contact mats and for
safeguarding locations where there is a risk of crushing and cutting through the use of safety contact edges
and safety bumpers.
The SK 41 switching unit is designed and type-approved in accordance with EN ISO 13849-1 "Safety-related
parts of control systems" for Cat. 3 Performance Level d. To meet Cat. 3 requirements, the switching unit has
a redundant structure with two, two-way polling, forcibly actuated safety relays per channel.
Monitoring of the standby current is made possible by an integrated terminating resistor in the sensor. If the
specified standby current is flowing, the output relays are activated and the switching contacts are closed. If
the sensor is actuated or the sensor circuit is interrupted, the relay switching contacts open.
The monitoring state of the sensor and the applied operating voltage are indicated by LEDs.

4. Proper use

The switching unit is intended to be used as protection in combination with safety contact mats, safety bumpers
and safety contact edges with 8.2 kΩ resistor for standby-current monitoring.
Any uses above and beyond these uses constitute improper use. The manufacturer assumes no liability for
damages arising from improper use.
The device may only be used in special applications with the manufacturer's express consent.
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