3
SRB-E-402ST
Operating instructions
Safety-monitoring module
EN
Insulation values to IEC 60664-1:
Rated insulation voltageU
i
:
- safety contacts:
250 V
- safety outputs:
50V
Rated impulse withstand voltageU
imp
:
- safety contacts:
6 kV
- safety outputs:
0.8 kV
Overvoltage category:
III
Degree of pollution:
2
Pull-in delay:
< 150 ms
Drop-out delay in case of "emergency stop":
< 10 ms
Drop-out delay on "supply failure":
< 10 ms
Bridging in case of voltage drops:
typ. 5 ms
Readiness after switching on voltage [s]:
< 1.5 sec.
Control current circuits/inputs:
Inputs S12, S22, S32, S42:
24 VDC / 8 mA
Inputs X2, X3, X4, X5, X7:
24 VDC / 8 mA
Clock outputs S11, S21, S31, S41:
> 20 VDC, 10 mA per output
Cable length:
1500 m with 1.5 mm²; 2500 m with 2.5 mm²
Conduction resistance:
max. 40 Ω
Relay outputs:
Switching capacity of the safety contacts:
13-14, 23-24:
max. 250 V, 6 A ohmic,
min. 10 VDC / 10 mA
(Derating see 2.5)
Fuse rating of the safety contacts:
external (Ik = 1000 A)
to EN 60947-5-1
Safety fuse 10 A quick blow, 6 A slow blow
Utilisation category to EN 60947-5-1:
AC-15: 230 V / 4 A
DC-13: 24 V / 4 A
Switching capacity of the auxiliary contacts:
41-42: 24 VDC / 1 A
Fuse rating for the auxiliary contact:
safety fuse
2.5 A quick blow, 2 A slow blow
S
afety contact values:
resistance max. 100 mΩ, AgNi,
self-cleaning, positive action
Electrical life:
refer to 2.5
Mechanical life:
10 million operations
Semi-conductor outputs:
Switching capacity of the safety outputs Q:
max. 2 A
Voltage drop:
< 0.5 V
Leakage current:
< 1 mA
Max. fuse rating of the safety outputs:
refer to "Operating voltage"
Test impulse to Q1, Q2:
< 1 ms (negative) < 100 µs (positive)
Utilisation category to EN 60947-5-1:
DC-13: 24 V / 2 A
Switching capacity of signaling outputs:
semi-conductor output Y1:
24 VDC/100 mA
Fuse rating of the signalling outputs:
internal electronic trip,
tripping current > 100 mA
Max. switching cycles / minute:
20
Inductive consumers:
provision is to be made for suitable
protective wiring for suppression
Mechanical data:
Connection type:
refer to 2.1
Cable section:
refer to 2.1
Connecting cable:
rigid or flexible
Tightening torque for the terminals:
0.5 Nm
Material of enclosure:
glass-fibre reinforced thermoplastic, ventilated
Weight:
190 g
Ambient conditions:
Ambient temperature:
–25°C … +60°C
(non condensing)
Storage and transport temperature:
–40°C … +85°C
(non condensing)
Protection class:
Enclosure: IP40,
Terminals: IP20,
Clearance: IP54
Resistance to shock:
30 g / 11 ms
Resistance to vibrations
to EN 60068-2-6:
10 ... 55 Hz, amplitude 0.35 mm
Altitude:
max. 2,000 m
2.5 Derating / electrical lifespan of safety contacts
No derating with individual installation of modules.
Derating on request if several modules are installed one after the
other without spacing and with maximum output load and ambient
temperatures.
Electrical life of the safety contacts
DC13 24V
AC15 230V
AC1 230V
DC1 24V
10.000.000
1.000.000
100.000
10.000
0 1 2 3 4 5 6 7 8 9
Operations
Contact load in amperes
2.6 Safety classification
2.6.1 Safety classification of semi-conductor output
Standards:
EN ISO 13849-1, IEC 61508, IEC/EN 62061
PL:
e
Control Category:
4
PFH
D
:
≤ 2.66 x 10
-9
/ h
PFD
avg
:
≤ 2.42 x 10
-5
SIL:
suitable for SIL 3 applications
Service life:
20 years
2.6.2 Classification of relay output
Standards:
EN ISO 13849-1, IEC 61508, IEC/EN 62061
PL:
e
Control Category:
4
DC:
high
CCF:
> 65 points
PFH
D
:
≤ 1.25 x 10
-8
/ h
PFD
avg
:
≤ 5.3 x 10
-5
SIL:
suitable for SIL 3 applications
Service life:
20 years
The PFH value of 1.25 × 10
-8
/h applies to the combinations of contact
load (current through enabling contacts) and number of switching
cycles (n
op/y
) mentioned in the table below. At 365 operating days per
year and a 24-hours operation, this results in the below-mentioned
switching cycle times (t
cycle
) for the relay contacts.
Diverging applications upon request.
Contact load
n
op/y
t
cycle
20 %
880,000
0.6 min
40 %
330,000
1.6 min
60 %
110,000
5.0 min
80 %
44,000
12.0 min
100 %
17,600
30.0 min
