2
Operating instructions
Safety-monitoring module
SRB 400NE
SRB 402NE
EN
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 standard EN 1088 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
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.
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 400NE-
➀
SRB 402NE-
➀
No. Option
Description
➀
24V
24 VAC / VDC
230V
230 VAC
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 Purpose
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 or BN20-2rz type magnetic safety sensors from Schmersal.
The safety function is defined as the opening of release 13-14 / 23-24
or 33-34 / 43-44 when the inputs S11-S12 and/or S21-S22 or S31-S32
and/or S41-S42 are opened. The safety-relevant current path with
the output contacts 13-14, 23-24, 33-34 and 43-44 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:
AgNi, self-cleaning, positive drive
Weight:
24 V: 370 g, 230 V: 550 g
Start conditions:
Automatic
Feedback circuit available:
yes
Pull-in delay:
typ. 0.5 s
Drop-out delay in case of emergency stop:
typ. 50 ms
Pull-in delay auxiliary contacts:
57-58, 67-68
(only SRB 402NE): adjustable 0 … 5 sec
(factory setting 5 sec)
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:
yes
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 … +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:
24 V: max. 6 W / 6 VA
230 V: max. 6 W / 7.8 VA
Rated operating voltage U
e
:
24 VDC: –15% / +20%,
residual ripple max. 10%,
24 VAC, 230 VAC: –15% / +10%
Frequency range:
50 / 60 Hz
Fuse rating for the operating voltage:
internal F1: T 1 A
Monitored inputs:
Cross-wire detection:
yes
Wire breakage detection:
yes
Earth connection detection:
yes
Number of NO contacts:
0
Number of NC contacts:
4
Outputs:
Number of safety contacts:
4
Number of auxiliary contacts:
SRB 402NE: 2
Switching capacity of the safety contacts:
230 VAC: 6 A ohmic
(inductive in case of appropriate protective wiring)
13-14 or 23-24 max. 6 A;
33-34 or 43-44 max. 6 A;
13-14 and 23-24 max. 4.2 A each;
33-34 and 43-44 max. 4.2 A each
Switching capacity of the auxiliary contacts:
230 VAC: 2 A
ohmic; AC-15: 250 V / 2 A;
DC-13: 24 V / 2 A
Fuse rating of the safety contacts:
6.3 A slow blow
Recommended fuse for the auxiliary contacts:
2 A slow blow
Utilisation category to EN 60947-5-1:
AC-15, DC-13
Dimensions H x W x D:
100 mm × 45 mm × 121 mm
The data specified in this manual are applicable when the component is
operated with rated operating voltage U
e
±0%.
