Electrical Connection; Connection Of Multiple Sensors Per Sensor Circuit - ASO Safety Solutions SK 41 Manuel D'utilisation

7.2 Electrical connection

• Connect supply voltage 230 V AC (115 V AC) to terminals A1 A2 or 24 V AC/DC to terminals B1 (+) B2 (-).
• Connect the sensor to terminals X1 X2.
• Connect the control circuit that is to be monitored to terminals 13 24. In the case of redundant routing
of the switching contacts, the factory-mounted jumper between terminals 14 23 is to be removed.
• For manual reset, bridge terminals S11 S12 (factory setting: autom. reset, S11 S12 not bridged) and
connect the reset push-button to terminals Z1 Z2.
Upon successful commissioning, safety output 13 24 is activated (relay contact "closed"). Actuation of the
sensor causes relay contact 13 24 to open and the auxiliary relay to switch according to the given switching
unit version. This is indicated with the aid of the yellow Aux LED.

7.3 Connection of multiple sensors per sensor circuit

ASO sensors must not be connected in parallel.
One or more sensors can be connected to the sensor input X1 X2. For this purpose, the individual sensors are
connected in series according to figure 1.
Safety edges SKL:
Up to five SKL may be connected in series. The maximum total length oft the SKL shall not exceed 100 m.
The length of one SKL may be up to 25 m. The total cable length oft the in series connected SKL must not
exceed 25 m.
Safety bumper ASB:
Up to five ASB may be connected in series. The maximum total length oft the ASB shall not exceed 15 m. The
length of one ASB may be up to 3 m. The total cable length oft the in series connected ASB must not exceed
25 m.
Safety contact mat ASK:
Up to ten ASK may be connected in series. The maximum total area shall not exceed 10 m
of an ASK is 1350 x 2350 mm. The total cable length oft the in series connected ASK must not exceed 25 m.
Before connecting the sensors that are connected in series, it is recommended that the resistance value of
the arrangement is to be measured. The resistance must be 8.2 kΩ ± 500 Ω when the sensor is inactive and
must not exceed 500 Ω when it is active.
Sensor 1
2
Figure 1: Wiring of multiple sensors; in this example: safety contact edge
Sensor 2
2
. The maximum size
2
Sensor „n"
2
2
17