2
Operating instructions
Safety-monitoring module
SRB NA-R-C.33
EN
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 forbid
-
den; 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:
SRB NA-R-C.33
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.
The safety function is defined as the opening of enabling circuits 13-14,
23-24 and 33-34 when the inputs T11-T12 and/or T11-T22 are opened.
The safety-relevant current paths with 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 of DIN EN ISO 13 849-1“):
– 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:
Thermoplastic
Material of the contacts:
AgSnO, self-cleaning, positive drive
Weight:
190 g
Start conditions
Start button
Feedback circuit (Y/N):
Yes
Drop-out delay:
typ. 50 ms
Pull-in delay:
typ. 20 ms
Mechanical data:
Connection type:
Screw connection
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 … +45°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 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 VA
Rated operating voltage U
e
:
24 VDC –15%/+20%,
residual ripple max. 10%
Max. fuse rating of
the operating voltage:
Internal F1: TM 0,25 A / 250 V
Cover F2: T 0.125 A / 250 V
Monitored inputs:
Cross-wire detection (Y/N):
No
Wire breakage detection (Y/N):
Yes
Earth leakage detection (Y/N):
Yes
Number of NO contacts:
0
Number of NC contacts:
2
Cable lengths:
1-channel without cross-wire
short detection:
– 1.500 m = 1,5 mm²
– 2.500 m = 2,5 mm²
2-channel without cross-wire
short detection
Conduction resistance:
max. 40 Ω
Outputs:
Number of safety contacts:
3
Number of auxiliary contacts:
1
Number of signalling outputs:
0
Switching capacity of
the safety contacts:
13-14 / 23-24 / 33-34:
230 VAC: 6 A ohmic (inductive in
case of appropriate protective wiring)
Fuse rating of
the safety contacts:
6.3 A slow blow
Utilisation category
to EN 60947-5-1:
AC-15 / DC-13: EN 60947-5-1
Dimensions (H/W/D):
83 mm × 45 mm × 140 mm
The data specified in this manual is applicable when the component is
operated with rated operating voltage U
e
±0%.
