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ELMON relay 31-31
Safety Relay
6.6 Connecting multiple sensors per sensor circuit
ASO sensors must not be connected in parallel.
The ELMON relay 31 switching unit is only equipped with one input for sensors. Nevertheless, it is possible
to connect two or more sensors to the switching unit. For this purpose, the individual sensors are connected
in series according to figure 1.
Safety contact edges SENTIR edge:
Up to five SENTIR edge may be connected in series. The maximum total length oft the SENTIR edge shall not
exceed 100 m .
The length of one SENTIR edge may be up to 25 m. The total cable length oft the in series connected SENTIR
edge must not exceed 25 m .
Safety contact bumper SENTIR bumper:
Up to five SENTIR bumper may be connected in series. The maximum total length oft the SENTIR bumper
shall not exceed 15 m .
The length of one SENTIR bumper may be up to 3 m. The total cable length oft the in series connected
SENTIR bumper must not exceed 25 m .
Safety contact mat SENTIR mat:
Up to ten SENTIR mat may be connected in series. The maximum total area shall not exceed 10 m
maximum size of an SENTIR mat is 1350 x 2350 mm. The total cable length oft the in series connected
SENTIR mat 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
X1
2
X2
Figure 1: Wiring of multiple sensors; in this example: safety contact edge
7. Taking out of service and disposal
The products manufactured by ASO are intended solely for commercial use (B2B). At the end of use, the
products are to be disposed of according to all local, regional and national regulations. Products can also be
returned to ASO, which will then dispose of them properly.
Sensor 2
2
Sensor „n"
2
. The
2
2
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