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Operating instructions
Safety-monitoring module
2.5 Safety classification
Standards:
PL:
Control category:
DC:
CCF:
PFH value:
SIL:
Service life:
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
) mentioned in the table below. At 365 operating days per
op/y
year and a 24-hours operation, this results in the below-mentioned
switching cycle times (t
) for the relay contacts.
cycle
Diverging applications upon request.
Contact load
20 %
525,600
40 %
210,240
60 %
80 %
100 %
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
operational conditions at the place where the product is
installed, must meet the provisions laid down in the
paragraph "Electromagnetic Compatibility (EMC)"
of EN 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
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.
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
Wiring examples: see appendix
ISO 13849-1, IEC 61508
99% (high)
> 65 points
≤ 2,00 × 10
20 years
n
t
op/y
cycle
1.0 min
2.5 min
75,087
7.0 min
30,918
17.0 min
12,223
43.0 min
5. Operating principle and settings
up to e
5.1 Operating principle after the operating voltage is switched on
up to 3
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
-8
/h
the contacts of the downstream relays acting on the feedback circuit
up to 3
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
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
: Status internal operating voltage (LED is on, when the operating
i
voltage on the terminals A1-A2 is ON and the fuse has not been
triggered)
13
23 31 S11
S12 S31 S32 S42
A1
X1 X2 X3
S22 S51 S52 S62
K1
SRB 207AN
U
i
K2
A1
S73
S74
S83 S93 Y1 Y3 Y5
14 24 32 S84
S94 Y2
Y4
Y6
Fig. 1
EN
SRB 207AN
3
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