General And Function Description - ASO Safety Solutions ELMON 41-322 Manuel D'utilisation

Safety Relay

3. General and function description

The ELMON relay 41-322 (41-822) switching device is used to evaluate sensors such as safety
contact mats, safety contact edges and safety bumpers for securing crush and shear locations.
An ASO sensor can be connected to the switching device. The steady-state current monitoring of the sensor
is made possible by an integrated terminating resistor in the sensor.
Furthermore, the device can also evaluate a sensor in four-wire technology.
If the desired steady-state current flows, the safety relays are driven and the switching contacts closed. If
the sensor is operated or the sensor circuit is interrupted, the relay switching contacts open.
A signal output with potential-free switching contacts is available. An operation of the sensor causes a
reaction of the signal output in accordance with the DIP switch configuration. The signal output must not
execute any safety-orientated functions. It is not fail-safe and not checked by testing either.
The switching device has been designed and type-approved in accordance with EN ISO 13849-1 "Safety-
related parts of control systems" for category 3 Performance Level e. For compliance with category 3, the
safety output is set up redundantly with two independent switching elements.
In addition the device has been type-approved according to EN 62061 "Functional safety of safety-related
electrical, electronic and programmable electronic control systems" and can meet a safety function up to
SIL 3.
The monitoring state of the sensor and the applied operating voltage are indicated by LED.
If there is a fault alarm, all safety outputs are inactive.
The unit can be used in a household environment as well as an industrial environment up to
an altitude of 2000m above mean sea level. The unit must not be operated in areas with major
temperature changes.
Manual Z1
Reset
SIG
16
Z2
R
+U2
X1
X2
Logic
X3
X4
Functional circuit diagram
ELMON relay 41-322: 230 V AC
A1
A2
(ELMON relay 41-822: 120 V AC)
B1
24V AC/DC
B2
31
OUT
AUX1
32
13
OUT
REL1
14
23
OUT
REL2
24