3
AES 2285
Operating instructions
Safety-monitoring module
EN
Switching capacity of the safety contacts:
13-14 / 23-24:
max. 250 V, 6 A ohmic
(inductive in case of
appropriate protective wiring)
Fuse rating of the safety contacts:
6.3 A slow blow
Utilisation category to IEC 60947-5-1:
AC-15 / DC-13
Dimensions H × W × D:
100 × 45 × 121 mm
The data specified in this manual are applicable when the
component is operated with rated operating voltage U
e
±0%.
2.5 Safety classification
Standards:
ISO 13849-1, IEC 61508
PL:
up to d
Control category:
up to 3
DC:
60 % … 90 % (low)
CCF:
> 65 points
PFH:
≤ 2.00 × 10
-8
/h
SIL:
up to 2
Service life:
20 years
The PFH value of 2.00 × 10
-8
/h applies to the combinations of contact
load (current through enabling contacts) and number of switching
cycles (n
op/y
) mentioned in the table below. At 365 operating days per
year and a 24-hours operation, this results in the below-mentioned
switching cycle times (t
cycle
) for the relay contacts.
Diverging applications upon request.
Contact load
n
op/y
t
cycle
20 %
525,600
1.0 min
40 %
210,240
2.5 min
60 %
75,087
7.0 min
80 %
30,918
17.0 min
100 %
12,223
43.0 min
3. Mounting
3.1 General mounting instructions
Mounting: snaps onto standard DIN rails to EN 60715.
Snap the bottom of the enclosure slightly tilted forwards in the DIN rail
and push up until it latches in position.
To avoid EMC disturbances, the physical ambient and opera-
tional conditions at the place where the product is installed,
must meet the provisions laid down in the paragraph
"Electromagnetic Compatibility (EMC)" of IEC 60204-1.
3.2 Dimensions
Device dimensions (H/W/D): 100 x 45 x 121 mm
4. Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
As far as the electrical safety is concerned, the protection
against unintentional contact of the connected and therefore
electrically interconnected apparatus and the insulation of the
feed cables must be designed for the highest voltage, which
can occur in the device.
Wiring examples: see appendix
5. Operating principle and settings
5.1 Operating principle after the operating voltage is switched on
With the guard door closed or the emergency stop command devices
unlocked, the enabling paths are closed as soon as the start button is
pushed. During the start command, the falling edge is detected, when
the contacts of the downstream relays acting on the feedback circuit
are closed.
If the safety guard is opened or the emergency-stop button is
actuated, the enabling paths of the safety-monitoring module will
open. The machine is stopped and the LED K1 and K2 will go out. The
corresponding signal output signals which guard was opened.
Inputs S11/S12-S22/S73/S74;
S31/S32-S42/S83/S84;
S51/S52-S62/S93/S94
Safety switches or emergency stop command devices with one NC
and one NO contact must be connected to the inputs. If not all inputs
are wired, a bridge must be established between Sx1 and Sx2 of the
non-used input.
Start button/feedback circuit X1/X2
Connect start button/feedback circuit to the inputs X1 and X2 according
to the wiring diagram
Automatic start X1-X3
The automatic start is programmed by connecting the feedback circuit to
the terminals X1-X3. If no start button and no feedback circuit is used, a
bridge must be established between X1 and X3.
Outputs
Enabling paths 13-14, 23-24: NO contacts for safety function
Signalling output Y1-Y6
0 V
safety guard open / no enabling signal
24 V
safety guard closed / enabling signal
Signalling outputs must not be used in safety circuits.
Auxiliary contact 31-32
Conditions of the enabling paths
The signalling outputs and the auxiliary contact must not be integrated
in the safety circuit.
5.2 LED functions
• K1: Status channel 1
• K2: Status channel 2
• U
i
: Status internal operating voltage (LED is on, when the operating
voltage on the terminals A1-A2 is ON and the fuse has not been
triggered)
K1
U
i
K2
13
A1
A1
23 31 S11
X1 X2 X3
S74
S73
S83 S93 Y1 Y3 Y5
14 24 32 S84
Y4
S12 S31 S32 S42
S22 S51 S52 S62
S94 Y2
Y6
AES 2285
Fig. 1
