Electrical Connection; Connecting The Supply Voltage; Connecting The Sensor; Connecting Multiple Sensors Per Sensor Circuit - ASO Safety Solutions ELMON rail 39-726 Manuel D'utilisation

Safety Relay

9. Electrical connection

The switching unit facilitates operation with a supply voltage of 24 V DC ± 10%.
All applied voltages must comply with the requirements for Safety Low Voltage (SELV). The outputs are not
galvanically isolated from the supply voltage.
- Connecting to the wrong terminals can destroy the switching unit.
- Cables installed outdoors or outside of the switching cabinet must be protected appropriately.
The signal cable must not be placed parallel to the motor cable or other power cables.

9.1 Connecting the supply voltage

Connect 24 V DC supply voltage to terminals +24 V 0 V.
The supply voltage used must comply with the requirements for safety low voltage (SELV).
The supply line to the switching unit must be protected with an appropriate fuse.

9.2 Connecting the sensor

Connect sensor to terminals X1 X2 or Y1 Y2.
If a channel is not used, it must be connected to an 8.2 kΩ resistor.

9.3 Connecting multiple sensors per sensor circuit

ASO-sensors must not be connected in parallel.
One or more sensors can be connected to sensor input. For this purpose, the individual sensors are connected
in series according to figure 1.
Safety 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 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
The 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
22
Sensor 2
2
Sensor „n"
2
.
2
2