2
Operating instructions
Safety-monitoring module
PROTECT SRB 101EXi-1R
EN
The information contained in this operating instructions manual is provi-
ded without liability and is subject to technical modifications.
The entire concept of the control system, in which the safety
component is integrated, must be validated to EN ISO 13849-
2.
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed.
1.6 Warning about misuse
In case of improper use or manipulation of the safety switch-
gear, personal hazards or damages to machinery or plant
components cannot be excluded when safety switchgear is
used. The relevant requirements of the standards ISO 14119
and EN ISO 13850 must be observed.
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 resul-
ting from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary re-
pairs, 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-1R
Only if the information described in this operating instruc-
tions manual are realised correctly, the safety function and
therefore 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-1R safety-monitoring module have
an intrinsically safe design according to IEC / EN 60079-11 (ABTN NBR
IEC 60079-11). As associated, intrinsically safe equipment. the SRB
can evaluate sensors located in the Zone 2 / 22, 1 / 21 and must be ins-
talled outside of the EX area in a suitable control box or control cabinet.
The SRB 101EXi-1R safety-monitoring module can also be used in
Zone 2 areas, when mounted in a suitable enclosure with at least IP54
protection class according to IEC/EN 60079-15 (ABTN NBR IEC 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 B10d value assessment (also refer to “Requirements
of DIN EN ISO 13849-1“):
– Control category 4 – PL e to DIN EN ISO 13849-1
– corresponds to SIL 3 to DIN EN 61508-2
– SILCL 3 to DIN EN 62061
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 61508
Climate resistance:
EN 60068-2-78
Mounting:
Snaps onto standard DIN rail to EN 60715
Terminal designations:
EN 60947-1
Material of the housings:
Plastic, glass-fibre reinforced thermo-
plastic, ventilated
Material of the contacts:
AgSnO, self-cleaning, positive drive
Weight:
approx. 220 g
Start conditions:
Automatic or start button
Feedback circuit (Y/N):
yes
Pull-in delay for automatic start:
typ. 20 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 connection
Cable section:
Min. 0,25 mm² / max. 2,5 mm²
Connecting cable:
rigid or flexible
Tightening torque for the terminals:
0.6 Nm
With removable terminals (Y/N):
Nein
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: IP40
Terminals: IP20
Clearance: IP54
Air clearances and creepage distances to IEC/EN 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 / 60 Hz
Recommended fuse for 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
Fuse rating of the safety contacts:
external (I
R
= 1000 A)
to EN 60947-5-1
Safety fuse 4 A quick blow, 3.15 A slow blow
Fuse rating for the auxiliary contacts:
external (IR = 1000 A)
to EN 60947-5-1
Safety fuse 2.5 A quick blow, 2 A slow blow
