3
SRB 202MSK /
SRB 202MSK/QS
Operating instructions
Safety-monitoring module
EN
Fuse rating of the
safety contacts:
4 A slow blow
Switching capacity of
the signalling outputs:
L54 / L84:
max. 50 mA
Muting indicators LA1 / LA2:
24 V / max. 0.5 A; min. 100 mA
Fuse rating of the
signalling outputs:
LA1 / LA2:
F2, F3 = T 0.5 A
Utilisation category
to EN 60947-5-1:
DC-13: EN 60947-5-1
Dimensions (H/W/D):
100 mm x 45 mm x 121 mm
The data speciied in this manual is applicable when the component is
operated with rated operating voltage U
e
±0%.
2.5
Safety classiication
Standards:
EN ISO 13849-1, IEC 61508,
EN 60947-5-1,
DIN EN 61496-1 part A.7.4
PL:
up to e
Control category:
up to 4
DC:
Stop 0: 99% (high)
CCF:
> 65 points
SIL:
up to 3
Service life:
20 years
B
10d
value (for one channel):
Low voltages range 20%: 20,000,000
40%: 7,500,000
60%: 2,500,000
80%: 1,000,000
Maximum load 100%: 400,000
MTTF
B
d
x
x
h
s/h
3600
d
10d
op
op
op
n
0,1 x n
op
t
cycle
For an average annual demand rate of n
op
= 126,720 cycles per year,
Performance Level PL e can be obtained at maximum load.
n
op
= average number of activations per year
d
op
= average number of operating days per year
h
op
= average number of operating hours per day
t
cycle
= average demand rate of the safety function in s
(e.g. 4 × per hour = 1 × per 15 min. = 900 s)
(Speciications can vary depending on the application-speciic
parameters h
op
, d
op
and t
cycle
as well as the load.)
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.
3.2 Dimensions
All measurements in mm.
Device dimensions (H/W/D): 100 x 45 x 121 mm
with plugged-in terminals: 120 × 45 × 121 mm
4 Electrical connection
4.1 General information for electrical connection
Wiring examples: see appendix
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
5 Operating principle and settings
5.1 LED functions
•
K1: Status reset
•
K2: Status channel 1
•
K3: Status channel 2
•
K4: Status lamp monitoring channel 1
•
K5: Status monitoring channel 2
•
LA: Status LA1-LA2
• U
B
: Status operating voltage (LED is on, when the operating voltage
on the terminals A1-A2 is ON)
• Ui: 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)
5.2 Description of the terminals
Voltages:
A1
A2
24 VDC
0 VDC
Inputs:
S11-S12
S12-S13
S21-S22
X1-MR
Input channel S1-S3 (+)
Input channel S1-S3 (–)
Input channel S2-S4 (+)
Master reset
Outputs:
13-14
23-24
X13-14
X23-24
LA1-LA2
First safety enabling circuit (stop 0)
Second safety enabling circuit (stop 0)
Bridging irst enabling circuit
Bridging second enabling circuit
Muting lamp
Start:
X1-X2
Feedback circuit
Signalling outputs: L54
L84
Signalling output
Signalling output
U
B
U
i
K1
K2
K3
K4
K5
LA
A1 X1 X2 MR
S11 S12 S13
S22
S21
S23
X23 L84 X13
24
LA1 13 23 L54
LA2 14
A2
SRB 202MSK
L84: ……. A
U
B
U
i
K1
K2
K3
LA
A1 X1 X2 MR
S11 S12 S13
S22
S21
S23
X23 L84 X13
24
LA1 13 23 L54
LA2 14
A2
SRB 202MSK/QS
L84: ……. A
Fig. 1: SRB 202MSK
Fig. 2: SRB 202MSK/QS
