2
Operating instructions
Safety-monitoring module
SRB 211AN V.2 / CC V.2 / PC V.2
EN
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 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.
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 211AN
➀
V.2
No.
Option
Description
➀
Plug-in screw terminals 0.25…2.5 mm²
/CC
Plug-in cage clamps 0.25 … 1.5 mm²
/PC
Screw terminals 0.25…2.5 mm²
Only if the information described in this operating instructions
manual are realised correctly, the safety function and there-
fore 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 desi-
gned for fitting in control cabinets. They are used for the safe evaluation
of the signals of positive break position switches for safety functions
or magnetic safety sensors on sliding, hinged and removable safety
guards as well as emergency stop control devices.
The safety function is defined as the opening of the enabling circuits
13-14 and 23-24 and the delayed opening of the enabling circuits 37-38
when the input S21-S22 is opened and/or when the input S13-S14 is
closed. The safety-relevant current paths with the output contacts 13-14
and 23-24 meet the following requirements under observation of a
B
10d
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
The safety-relevant current paths with the outputs contacts 37-38 meet
the following requirements under observation of a B
10d
value assess-
ment (also refer to chapter 2.5 "Safety classification"):
– Control category 3 - PL d to DIN EN ISO 13849-1
– SIL 2 to DIN EN 61508-2
– SILCL 2 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/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, AgNi,
self-cleaning, positive drive
Weight:
230 g
Start conditions:
Automatic or start button (monitored)
Feedback circuit available:
yes
Pull-in delay for automatic start:
typ. 120 ms, max. 130 ms
Pull-in delay with reset button:
typ. 10 ms, max. 15 ms
Drop-out delay in case of emergency stop:
typ. 15 ms, max. 20 ms
Drop-out delay on "supply failure":
≤ 55 ms
Bridging in case of voltage drops:
≤ 40 ms
Mechanical data:
Connection type:
refer to 2.1 Ordering code
Cable section:
refer to 2.1 Ordering code
Connecting cable:
rigid or flexible
Tightening torque for the terminals:
0.6 Nm
With removable terminals:
refer to 2.1 Ordering code
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:
2.4 W / 5.9 VA,
plus signalling output
Rated operating voltage U
e
:
24 VDC: –15% / +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 F1: > 750 mA;
tripping current F2: > 75 mA;
Reset after disconnection of supply voltage;
tripping current F3: > 140 mA
Current and voltage at the control circuits:
- S13, S14, S21, S22:
24 VDC, 10 mA
- X1, X2:
24 VDC, start impulse 25 mA / 25 ms
- X1, X3:
24 VDC, start impulse 950 mA / 10 ms
Monitored inputs:
Cross-wire detection:
yes
Wire breakage detection:
yes
Earth connection detection:
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
