3
SRB 324ST/R V.3
Operating instructions
Safety-monitoring module
EN
Switching capacity of
the safety contacts:
13-14, 23-24, 33-34 (STOP 0):
max. 250 V, 8 A ohmic (inductive in
case of suitable protective wiring);
AC-15: 230 VAC / 6 A,
DC-13: 24 VDC / 6 A;
residual current at ambient temperature
up to 45°C: 18 A / 55°C: 15 A /
60°C: 12 A
57-58, 67-68 (STOP 1):
max. 250 V, 6 A ohmic (inductive in
case of suitable protective wiring);
AC-15: 230 VAC / 3 A,
DC-13: 24 VDC / 2 A;
residual current at ambient temperature
up to 45°C: 12 A / 55°C: 10 A /
60°C: 8 A
Switching capacity of
the signalling outputs:
Z1-Z3: 24 VDC / 100 mA,
residual current: 200 mA
Switching capacity of
the auxiliary contacts:
41-42: 24 VDC / 2 A
Fuse rating of the
safety contacts:
STOP 0: 8 A slow blow
STOP 1: 6.3 A slow blow
Fuse rating of the
signalling outputs:
500 mA
(internal electronic fuse F3)
Recommended fuse for
the auxiliary contacts:
2 A slow blow
Utilisation category
to EN 60947-5-1:
AC-15, DC-13
Dimensions (H/W/D):
100 mm × 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:
EN ISO 13849-1, IEC 61508,
EN 60947-5-1
PL:
Stop 0: up to e
Stop 1: up to d
Control category:
Stop 0: up to 4
Stop 1: up to 3
DC:
Stop 0: 99% (high)
Stop 1: > 60% (low):
CCF:
> 65 points
SIL:
Stop 0: up to 3
Stop 1: up to 2
Service life:
20 years
B
10d
value (for one channel):
20%: 20,000,000
40%: 7,500,000
60%: 2,500,000
80%: 1,000,000
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)
(Specifications can vary depending on the application-specific
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
The electrical connection may only be carried out by
authorised personnel in de-energised condition.
Wiring examples: see appendix
5 Operating principle and settings
LED functions
•
K1: Status channel 1
•
K2: Status channel 2
•
K3/K4: Status delayed enabling circuit (LED is ON, when the
delayed enabling circuits 47-48, 57-58 are closed)
•
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)
Terminal description (see Fig. 1)
Voltages: A1
A2
+24 VDC / 24 VAC
0 VDC / 24 VAC
Inputs:
S11-S12
S11-S22
S21-S22
S12-B1
S31
Input channel 1 (+)
Input channel 2 (+)
Input channel 2 (–) (with cross-wire short detection)
Input channel 2 (–) (without cross-wire short detection)
+24 VDC
Out-
puts:
13-14
23-24
33-34
57-58
67-68
First safety enabling circuit (stop 0)
Second safety enabling circuit (stop 0)
Third safety enabling circuit (stop 0)
Fourth safety enabling circuit (stop 1)
Fifth safety enabling circuit (stop 1)
Start:
Y2-X5
Y2-S33
Z1 + Z2
Z3
Feedback circuit / Automatic start
Feedback circuit and external reset (monitored)
Signalling output channel 1 and 2
Fuse F3
