2
Operating instructions
Safety-monitoring module
PROTECT SRB 101EXi-1A
EN
1.6 Warning about misuse
In case of inadequate or improper use or manipulations of
the safety-monitoring module, personal hazards or damage
to machinery or plant components cannot be excluded.
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual. The manufacturer shall accept no liability for damages resulting
from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary repairs,
conversions and modifications to the device are strictly forbidden; the
manufacturer shall accept no liability for damages resulting from such
invasive work, arbitrary repairs, conversions and/or modifications to
the device.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
PROTECT SRB 101Exi-1A
Only if the information described in this operating instructions
manual are realised correctly, the safety function and there-
fore the compliance with the Machinery Directive and the
Explosion Protection Directive is maintained.
2.2 Special versions
For special versions, which are not listed in the order code below 2.1,
these specifications apply accordingly, provided that they correspond
to the standard version.
2.3 Destination and use
The safety inputs of the SRB 101EXi-1 safety-monitoring module have
an intrinsically safe design according to EN 60079-11. As appropriate
intrinsically safe apparatus, the SRB can evaluate sensors located in
the Zone 2 / 22, 1/21 and must be installed outside of the Ex-area in
a suitable control box or control cabinet.
The SRB 101EXi-1A safety-monitoring module can also be used in
Zone 2 areas, when mounted in a suitable enclosure with at least IP 54
protection class to EN 60079-15. The relay contacts for the safety
enabling signal are designed with protection class nC, the terminals
for the supply with nA and those for the signal inputs with ib.
The safety function is defined as the opening of release 13-14 when
the inputs S11-S12 or S21-S22 are opened. The safety-relevant current
path with output contact 13-14 meets the following requirements under
observation of a B
10d
value assessment (also refer to “Requirements of
DIN EN ISO 13849-1“):
– Control category 4 - PL e to DIN EN ISO 13849-1
– SIL 3 to DIN EN 61508-2
– SILCL 3 to DIN EN 62061
(meets the requirements of control category 4 to DIN EN 954-1)
To determine the Performance Level (PL) of the entire safety function
(e.g. sensor, logic, actuator) to DIN EN ISO 13849-1, an analysis of all
relevant components is required.
2.4 Technical data
General data
Standards:
IEC/EN 60204-1, EN 60947-5-1;
EN ISO 13849-1, IEC/EN 61508
Climate resistance:
EN 60068-2-78
Fixing:
Snaps onto standard DIN
rails to DIN EN 60715
Terminal designations:
EN 60947-1
Material of the enclosure:
glass-fibre reinforced
thermoplastic, ventilated
Material of the contacts:
AgSnO, self-cleaning, positive drive
Weight:
aprox.230 g
Start conditions:
Automatic or start button
Feedback circuit (Y/N):
Yes
Pull-in delay with automatic start: typ. 300 ms
Drop-out delay in case
of emergency stop:
typ. 20 ms
Drop-out delay
on "supply failure":
typ. 20 ms
Bridging in case
of voltage drops:
typ. 15 ms
Mechanical data
Connection type:
Screw terminals
Cable section:
min. 0.25 mm
2
/ max. 2.5 mm
2
Connecting cable:
rigid or flexible
Tightening torque
for the terminals:
0.6 Nm
With removable
terminals (Y/N):
No
Mechanical life:
10 million operations
Electrical life:
Derating curve available on request
Resistance to shock:
10 g / 11 ms
Resistance to vibrations
to EN 60068-2-6:
10 ... 55 Hz, amplitude 0.35 mm
Ambient conditions
Ambient temperature:
–25°C … +60°C
Storage and transport
temperature:
–40°C … +85°C
Protection class:
Enclosure: IP 40
Terminals: IP 20
Wiring compartment: IP 54
Air clearances and
creepage distances
IEC 60664-1: 4 kV/2
(basic insulation), EN 60079-11
EMC rating:
to EMC Directive
Electrical data
Contact resistance
in new state:
max. 100 mΩ
Power consumption:
max. 3.0 W
Rated operating voltage U
e
:
24 VDC –15% / +20%,
residual ripple max. 10%
Frequency range:
50 Hz / 60 Hz
Max. fuse rating of
the operating voltage:
internal fuse:
– F1: T 50 mA / 250 V
– F2: T 100 mA / 250 V
Monitored inputs
Cross-wire detection (Y/N):
Yes
Wire breakage detection (Y/N): Yes
Earth leakage detection (Y/N): Yes
Number of NO contacts:
0
Number of NC contacts:
2
Cable lengths:
see EX-relevant Data:
Conduction resistance:
see EX-relevant Data:
Outputs
Number of safety contacts:
1
Number of auxiliary contacts:
1
Number of signalling outputs:
0
Switching capacity of
the safety contacts:
13-14:
max. 230 V, 3 A ohmic
(inductive in case of appropriate
protective wiring) min. 10 V / 10 mA
Switching capacity of
the auxiliary contacts:
24 VDC / 2 A
