2
Operating instructions
Safety-monitoring module
SRB301HC/T-24V
SRB301HC/T-230V
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 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 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:
SRB301HC/T-
➀
No.
Option
Description
➀
24V
24 VAC/DC
230V
48 … 240 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 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 for safety functions
on sliding, hinged and removable safety guards as well as emergency
stop control devices and safety mats (SMS from Schmersal).
The safety function is defined as the opening of the enabling circuits
13-14, 23-24 and 33-34 when the inputs S13-S14 and/or S23-S24 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
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:
24 V-version: 320 g,
230 V-version: 340 g
Start conditions:
Automatic or start button
Feedback circuit (Y/N):
yes
Pull-in delay:
typ. 200 ms, max. 400 ms
Drop-out delay in case of
emergency stop:
typ. 20 ms, max. 25 ms
Drop-out delay on "supply failure":
typ. 100 ms
Bridging in case of voltage drops:
typ. 90 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):
yes
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 … +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:
- 24V-version:
max. 1.6 W / 3.7 VA
- 230V-version:
max. 2.0 W / 5.1 VA
Rated operating voltage U
e
:
- 24V-version:
24 VDC –15% / +20%,
residual ripple max. 10%
24 VAC –15% / +10%,
- 230V-version:
48 … 240 VAC
Frequency range:
50 / 60 Hz
Fuse rating for the operating voltage:
- 24V-version:
F1: internal electronic fuse,
tripping current > 500 mA;
secondary side: internal electronic fuse,
tripping current > 0.12 A;
- 230V-version:
primary side: safety fuse, tripping current T 1 A
Monitored inputs:
Cross-wire detection (Y/N):
Yes
Wire breakage detection (Y/N):
Yes
Earth leakage detection (Y/N):
Yes
Number of NO contacts:
0
Number of NC contacts:
2
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:
1
Number of signalling outputs:
0
