2
Operating instructions
Safety-monitoring module
SRB 301AN
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 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 result-
ing 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 301AN
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefo-
re 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 de-
signed for fitting in control cabinets. They are used for the safe evalua-
tion of the signals of positive break position switches or magnetic safety
sensors for safety functions on sliding, hinged and removable safety
guards as well as emergency stop control devices and AOPD's.
The safety function is defined as the opening of the enabling circuits
13-14, 23-24 and 33-34 when the input S21-S22 is opened and/or when
the input S13-S14 is closed. The safety-relevant current paths with the
outputs contacts 13-14, 23-24 and 33-34 meet the following require-
ments under observation of a PFH value assessment (also refer to
chapter 2.5 "Safety classification"):
– 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
thermoplastic, ventilated
Material of the contacts:
AgSnO, self-cleaning, positive drive
Weight:
230 g
Start conditions:
Automatic or start button
Feedback circuit (Y/N):
yes
Pull-in delay for automatic start:
typ. 170 ms
Pull-in delay with reset button:
typ. 25 ms
Drop-out delay in case of emergency stop:
typ. 15 ms, max. 23 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 … +45 °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. 2.1 W / 3.5 VA
Rated operating voltage U
e
:
24 VDC –10%/+20%,
residual ripple max. 10%;
24 VAC –15%/+10%
Frequency range:
50 / 60 Hz
Fuse rating for the operating voltage:
Internal electronic trip,
tripping current > 500 mA,
reset after approx. 1 sec.
Monitored inputs:
Cross-wire detection (Y/N):
Yes
Wire breakage detection (Y/N):
Yes
Earth leakage detection (Y/N):
Yes
Number of NO contacts:
1
Number of NC contacts:
1
Cable length:
1,500 m mit 1.5 mm²
2,500 m mit 2.5 mm²
Conduction resistance:
max. 40 Ω
Outputs:
Number of safety contacts:
3
Number of auxiliary contacts:
0
Number of signalling outputs:
1
Switching capacity of the safety contacts:
13-14; 23-24; 33-34:
max. 250 V, 6 A ohmic (inductive in case
of appropriate protective wiring);
min. 10 V / 10 mA
Switching capacity of the signalling outputs:
Y1: 24 VDC / 100 mA
