Versions And Mechanical Mounting; Commissioning; Prerequisites; Electrical Connection - ASO Safety Solutions SK 31 Manuel D'utilisation

SK 31 Safety Relay

5.3 Versions and mechanical mounting

Version SK 31-31
Polycarbonate housing with 1 x M12 and 2 x M16 screw connections for on-wall mounting in harsh
environments.
The switching unit is to be professionally mounted at a suitable location. After removing the cover,
the housing can be mounted with four screws.
The switching unit may be mounted in any orientation. To prevent moisture penetration, it should,
however, be installed so that the cable conduits point downward.
Version SK 31-31W
Same as version SK 31-31, but with changeover contact (outputs 12 13 14).
For technical reasons, output assignments are not the same as those of version
SK 31-31 (see page 20).
Version SK 31-33
Snap-on-rail version for mounting on 35-mm DIN rails in the switching box.

6. Commissioning

6.1 Prerequisites

• When supplying with 12-24 V AC/DC, the voltage must comply with the requirements for safety
low voltage (SELV).
• Cables installed outdoors or outside of the switching cabinet must be protected appropriately.
• The protection class specified for this device is only ensured if the supply lines have been properly
clamped to the screw connections and the housing cover is appropriately screwed down.

6.2 Electrical connection

• Connect supply voltage 12-24 V AC/DC to terminals 12 24 V AC/DC or 230 V AC to terminals PE
L1 N.
• Connect the sensor to terminals X1 X2.
• Connect the control circuit that is to be monitored to terminals 13 14 or, for version SK 31-31W,
to terminals 12 13 14 according to the requirements.
• Connect the test signal supplied by the primary control to the Test Signal terminals and select
the waveform via DIP slide switch S1.
Upon successful commissioning, safety output 13 14 (SK 31-31W 12 13) is activated (relay contact
"closed"). Actuation of the sensor causes relay contact 13 14 (SK 31-31W 12 13) to open.
16
Relay