General; Proper Use; Device Overview; Signal Indicators - ASO Safety Solutions SK 32-24 Manuel D'utilisation

3. General

The SK 32 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.
The switching unit complies with EN ISO 13849-1:2008, Cat. 3. To meet Cat. 3 requirements, the switching
unit has a redundant structure with two, two-way polling, forcibly actuated safety relays per channel. A
terminating resistor is integrated in the sensor in order to enable monitoring of the standby current. 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 corresponding relay switching contacts open.
The switching states of the relays and the applied operating voltage are indicated by LEDs.

4. Proper use

The SK 32-24 switching unit can only fulfil its safety-related task if used properly.
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 k� terminating resistor.
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. Device overview

5.1 Signal indicators

LED Power green
Supply voltage
LED Channel 1 red
Sensor channel 1 actuated or supply line interrupted
LED Channel 2 red
Sensor channel 2 actuated or supply line interrupted

5.2 Connection terminals

1 2 not used
3 11 sensor input - channel 1
3 10 sensor input - channel 2
4 5
output - safety relay - channel 1
6 7 output - safety relay - channel 2
8 9 Supply voltage
13