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Operating instructions
Safety-monitoring module
Fuse rating of the
safety contacts:
Recommended fuse for
the auxiliary contacts:
Utilisation category
to EN 60947-5-1:
Dimensions (H/W/D):
The data specified in this manual is applicable when the component
is operated with rated operating voltage U
EX-relevant Data
EG-prototype test/
prototype test:
Group, Category,
Ignition protection type:
Maximum safety voltage U
:
m
Inputs:
Temperature class:
Voltage U
:
o
Current I
:
o
Power P
:
o
Separation
(intrinsically safe/other circuits):
Gas group
II C
external capacity
26 36 46 49
C
(nF)
o
external inductivity
4.0 2.0 1.0 0.5 38.0 5.0 2.0 1.0 0.5 0.2
L
(mH)
o
Reference values for cable:
C ≈ 200 nF/km, L ≈ 1 mH/km (C ≈ 200 pF/m, L ≈ 1 µH/m)
2.5 Safety classification
Standards:
PL:
Control category:
DC
CCF:
SIL:
Service life:
B
value (for one channel):
10d
B
10d
n
MTTF
op
d
0,1 x n
op
For an average annual demand rate of n
year, Performance Level PL e can be obtained at maximum load.
n
= average number of activations per year
op
d
= average number of operating days per year
op
h
= average number of operating hours per day
op
t
= average demand rate of the safety function in s
cycle
(e.g. 4 × per hour = 1 × per 15 min. = 900 s)
(Specifications can vary depending on the application-specific
parameters h
, d
and t
as well as the load.)
op
op
cycle
3.15 A slow blow
2 A slow blow
AC-15 / DC-13: EN 60947-5-1
100 mm x 22.5 mm x 121 mm
± 0%.
e
TÜV 08 ATEX 7522
TÜV 08 ATEX 7557 X
Gas:
II 3 G Ex nAnC IIC T5
L
(SRB in zone 2)
Gas/dust:
II (2) GD [Ex ib] IIC /
L
[Ex ibD] (circuits in zone 1, 21/2, 22)
253 VAC
(caution: U
is not a rated voltage!)
m
S11-S12, S21-S22, X1-X3:
[Ex ib] IIC / [Ex ibD]
T5
33.6 V
57.0 mA
478.8 mW (linear characteristic)
safe separation to EN 60079-11,
amplitude of the voltage 375 V
II B
160 180 230 280 350 412
EN ISO 13849-1, IEC 61508,
EN 60947-5-1
Stop 0: up to e
Stop 0: up to 4
99% (high)
> 65 points
up to 3
15 years
Low voltages range 20%: 20,000,000
40%: 7,500,000
60%: 2,500,000
80%: 1,000,000
Maximum load 100%: 400,000
d
x
h
x
3600
s/h
op
op
t
cycle
= 126,720 cycles per
op
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 Mounting of the sensors
The installation of the intrinsically safe current circuits must be executed
in accordance with the applicable standards EN 60079-14 or EN 61241-14.
According to EN 60079-11, the following must be observed
for the installation: a distance of ≥ 6 mm must be observed
between the terminals of the intrinsically safe current circuits
and other intrinsically safe current circuits. Between the
terminals of the intrinsically safe current circuits and other,
non-intrinsically safe current circuits, a distance of ≥ 50 mm
must be observed.
The commissioning and installation are to be executed by
qualified professionals only.
3.3 Installation in Zone 2: particular conditions
• The devices must be installed in control or junction boxes, which meet
the requirements to EN 60079-15 and have at least protection class
IP 54 (Fig. 1). To respect temperature class T5, the device must have
a free volume of at least 2,400 cm
• Please make sure that you have read and understood these operating
instructions and that you know all applicable legislations regarding
occupational safety and accident prevention prior to installation and
putting the component into operation.
• The intrinsically safe current circuits of the device (light blue terminals)
may be lead in explosion-endangered areas. In this case, it must be
especially observed that they are safely separated from all non-intrin-
sically safe current circuits.
• The connection and separation of the connections of
non-intrinsically safe current circuits is not authorised
in explosion-endangered atmospheres.
• Only use a damp cloth to clean the enclosure.
• The lifetime of the safety-monitoring related to the ignition
protection class "nC" is at least 15 years. Upon expiration
of this time, the safety-monitoring module must be repla-
ced either returned to the manufacturer for check-up!
The temperature specifications (–25°C ≤ Ta ≤ +60°C) of
the safety-monitoring module are related to a volume of the
control cabinet of at least approx. 2,400 cm
The distance with regard to other safety-monitoring module
imperatively must be at least approx. 5 cm.
EN
PROTECT SRB 101EXi-1A
3
.
3
for each SRB.
3
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