2
Operating instructions
Safety-monitoring module
SRB 302X3
EN
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 inadequate or improper use or manipulations of
the safety-monitoring module, personal hazards or damage
to machinery or plant components cannot be excluded.
The relevant requirements of the standards EN 1088 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 resulting
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.
The safety-monitoring module must only be used when the enclosure is
closed, i.e. with the front cover fitted.
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 302X3
➀
No.
Option
Description
➀
24V/230V
24VAC/DC / 230 VAC
24V/115V
24VAC/DC / 115VAC
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefore
the compliance with the Machinery 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-monitoring modules for integration in safety circuits are
designed for fitting in control cabinets. They are used for the safe
evaluation of the signals of positive break position switches for safety
functions on sliding, hinged and removable safety guards as well as
emergency stop control devices and AOPD's (light barriers).
The safety function is defined as the opening of enabling circuits 13-14,
23-24 and 33-34 when the inputs S11-S12 and/or S21-S22 and/or
S31-S32 are opened. The safety-relevant current paths with the output
contacts 13-14, 23-24 and 33-34 meet the following requirements under
observation of a B
10d
value assessment (also refer to "Requirements to
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
– corresponds to SILCL 3 to DIN EN 62061
(corresponds to 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
Mounting:
Snaps onto standard DIN rail to EN 60715
Terminal designations:
EN 60947-1
Material of the housings:
Plastic, glass-fibre reinforced
thermoplastic, ventilated
Material of the contacts:
AgSnO, self-cleaning, positive drive
Weight:
450 g
Start conditions:
Automatic or start button (monitored)
Feedback circuit available:
yes
Pull-in delay:
typ. 20 ms
Drop-out delay in case of emergency stop:
typ. 20 ms
Drop-out delay on "supply failure":
typ. 60 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:
No
Mechanical life:
10 million operations
Resistance to shock:
10 g / 11 ms
Resistance to vibrations to EN 60068-2-6:
10 … 55 Hz,
amplitude 0.35 mm
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)
EMC rating:
to EMC Directive
Electrical data:
Contact resistance in new state:
max. 100 mΩ
Power consumption:
max. 2.5 W / 5.0 VA
Rated operating voltage U
e
:
24 VDC: –15% / +20%,
residual ripple max. 10%
24 VAC: –15% / +10% (Terminals B1-B2)
115/230 VAC: –15% / +10% (Terminals A1-A2)
Frequency range:
50 / 60 Hz
Fuse rating for the operating voltage:
Internal electronic trip,
tripping current: > 1.0 A
Current and voltage at the control circuits:
- S11, S12:
24 VDC, continuous current: 80 mA;
- S21, S22:
24 VDC, continuous current: 40 mA,
start impulse: 450 mA / 5 ms;
- S31, S32:
24 VDC, continuous current: 40 mA;
- S13, S14:
24 VDC, start impulse: 150 mA / 20 ms;
- S33, S34:
24 VDC, start impulse: 200 mA / 5 ms
Monitored inputs:
Cross-wire detection:
optional
Wire breakage detection:
yes
Earth connection detection:
yes
Number of NO contacts:
0
Number of NC contacts:
2
Conduction resistance:
max. 10 Ω
Outputs:
Number of safety contacts:
3
Number of auxiliary contacts:
2
Number of signalling outputs:
0
