3
PROTECT SRB 101EXi-1R
Operating instructions
Safety-monitoring module
EN
Utilisation category to IEC/EN 60947-5-1:
AC-15: 230 V / 3 A
DC-13: 24 V / 3 A
Dimensions H x W x D:
100 mm x 22,5 mm x 121 mm
The data specified in this manual is applicable when the component is
operated with rated operating voltage U
e
± 0%
.
EX-relevant Data
EC-prototype test certificate:
TÜV 08 ATEX 7522
- Designation:
L
II (2) G [Ex ib Gb] IIC
L
II (2) D [Ex ib Db] IIIC
(Circuit in Zone 1, 21 / 2, 22)
EC-prototype test certificate:
TÜV 08 ATEX 7557 X
- Designation:
L
II 3 G Ex nA nC IIC T5 Gc
(SRB in Zone 2)
IECEx:
IECEx TUR 15.0xxxx
- Designation:
[Ex ib Gb] IIC
[Ex ib Db] IIIC
Ex nA nC IIC T5 Gc
INMETRO:
DNV 14.0041
- Designation:
[Ex ib Gb] IIB
[Ex ib Gb] IIC
[Ex ib Db] IIIC
Maximum safety voltage U
m
:
253 VAC
(caution: Um is not a rated voltage!)
Inputs:
S11-S12, S21-S22, X1-X3:
[Ex ib Gb] IIC bzw. [Ex ib Db] IIIC
Temperature class:
T5
Voltage U
o
:
33,6 V
Current I
o
:
57,0 mA
Capacity P
o
:
478,8 mW (linear characteristic)
Separation (intrinsically safe / other circuits):
safe separation
according to
IEC/EN 60079-11
(ABTN NBR IEC 60079-11),
Voltage peak value 375 V
Gas group
II C
II B
External capacity
Co (nF)
26
36
46
49 160 180 230 280 350 412
external inductivity
Lo (mH)
4.0 2.0 1.0 0.5 38.0 5.0 2.0 1.0 0.5 0.2
Reference values for cable to EN 60079-14
(cable with 2 or 3 conductors):
C ≈ 200 nF/km, L ≈ 1 mH/km (C ≈ 200 pF/m, L ≈ 1 µH/m)
Reference values for cable with 3 to 6 conductors:
C ≈ 400 nF/km, L ≈ 2 mH/km (C ≈ 400 pF/m, L ≈ 2 µH/m)
2.5 Safety classification
Standards:
EN ISO 13849-1, IEC 61508
PL:
up to e
Control category:
up to 4
DC:
99% (high)
CCF:
> 65 points
PFH value:
≤ 2.00 x 10
-8
/h
SIL:
up to 3
Service life:
20 years
The PFH values of 2.00 x 10
-8
/h apply to the combinations of contact
load (current through enabling contacts) and number of switching cyc-
les (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.
3.2 Mounting of the sensors
The installation of the intrinsically safe current circuits must be executed
in accordance with the applicable standards IEC/EN 60079-14 (ABTN
NBR IEC 60079-14.
According to IEC/EN 60079-11 (ABTN NBR IEC 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 IEC/EN 60079-15 (ABTN NBR IEC 60079-15) and
have at least protection class IP54 (Fig. 1). To respect temperature
class T5, the device must have a free volume of at least 2,400 cm³.
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-intrinsi-
cally 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 modu-
le must be replaced 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 cm³ for each SRB.
The distance with regard to other safety-monitoring module
imperatively must be at least approx. 5 cm.
