General; Proper Use; Mechanical Mounting - ASO Safety Solutions SK 35 Manuel D'utilisation

SK 35 Safety Relay

3. General

The SK 35 switching unit, designed with two channels, 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 (sensors).
Two separate sensor circuits can be connected to the SK 35 switching unit, whereby each acts on
one switching output.
The SK 35 switching unit is intended for use on plants/machines that make a test signal available
through a primary controller prior to each dangerous movement and appropriately evaluate the
reaction of the switching unit. In combination with this, the switching unit satisfies safety category 2
acc. to EN ISO 18349-1:2008 "Safety-related parts of control systems".
Monitoring of the standby current is made possible by an integrated terminating resistor in the sensor
circuit. If the specified standby current is flowing, the corresponding output relay is activated and the
switching contact is closed. If a sensor is actuated or a sensor circuit is interrupted, the respective
relay switching contact opens. The monitoring state of the sensors and the applied operating voltage
are indicated by LEDs.
Channels 1 and 2 are implemented independent of one another internally. As a result, they react
both to a test as well as to a release independent of one another. Only contacts Z1, Z2 affect both
channels and reset the error lock of both channels (manual reset).

4. Proper use

The SK 35 switching unit can only fulfil its safety-related task if used properly.
Proper use of the switching unit is the use as protection in combination with safety contact mats,
safety bumpers or safety contact edges.
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.

5. Mechanical mounting

The compact and easy-to-install switching unit is to be professionally mounted on a 35 mm DIN-
mounting rail in a dust- and moisture-protected switching cabinet or housing with a protection class
of at least IP54.
The switching unit may be mounted in any orientation.
Do not install the switching unit in the immediate vicinity of strong sources of heat.
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