General Information And Functional Description - ASO Safety Solutions ELMON rail 39-726 Manuel D'utilisation

ELMON rail 39-726
Safety Relay

3. General information and functional description

The switching unit ELMON rail 39-726 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.
Two separate ASO sensors can be connected to the switching unit. Monitoring of the standby current is made
possible by an integrated terminating resistor in the sensors. According to the configuration, the monitoring
state of the sensors is indicated by the outputs as combined function or as separated function.
Two safety outputs with non-isolated semiconductor outputs are available. If the idle state is detected at
the safety edges and if there are no faults present in the device, a voltage is output at the respective safety
outputs (corresponds to the supply voltage).
Two auxiliary outputs with potential-free switching contacts are available. Actuation of the sensors triggers
a reaction by the auxiliary output according to the DIP switch configuration. The auxiliary outputs must not
perform any safety functions. They are not one-fault safe and do not undergo a test.
The switching unit is designed and type-approved in accordance with EN ISO 13849-1 „Safety-related parts
of control systems" for category 3 Performance Level d. For Category 3 compliance, the safety outputs units
have a redundant and diverse design with two independent switching elements; of these, the semiconductor
switch's ability to turn off is constantly tested.
The monitoring state of the sensors and the auxiliary outputs, as well as the applied operating voltage are
indicated by LEDs.
If an error is present, all the safety outputs are not active.
Reset
Mode
Manual
Reset
SIG
CH1
SIG
CH2
S11
S12
Reset
Mode
Z1
Z2
R
+U2
X1
X2
R
+U2
Y1
Y2
ELMON rail 39-726
AUX mode
OUT mode
+U1
Redundant
Logic
+U1
+24V
0V
OUT
14
CH1
31
OUT
AUX1
32
OUT
24
CH2
41
OUT
AUX2
42
17