SAFE-SIL is a safety relay for coupling safe output signals of DCS or PLC systems. Furthermore it can be used as a contact extension for a basic safety device. No feedback loop is required. TÜV Rheinland has certified this module up to SIL 3 and Cat. 4, PL e in accordance with EN 62061 / EN 61508 and EN ISO 13849. Single channel operation, automatic start, 3 safe relay contacts, nominal input voltage: 24 V DC, max. switching capacity 250 V AC / 6 A, pluggable screw terminal blocks
EN 60204-1; DIN EN ISO 13849-1; EN 62061; EN 50156-1 EN 746-2; IEC 61508 Parts 1-2 and 4-7; IEC 61511-1
Rated Impulse Withstand Voltage (control voltage / contacts)
2.5 kV
Dielectric Strength
6 kV
Rated Insulation Voltage
250 V
Degree of Pollution
2
Overvoltage Category
3
Input Data
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Nominal Operating Voltage
24 V DC
Input Voltage Range DC
21.6 ... 26.4 V
Power Consumption (max.)
2 W
Line resistance at nominal voltage (max.)
50 Ω
Recovery Time
< 500 ms
Output Data
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Safe Contacts (non delayed)
3 NO
Auxiliary Contacts (non delayed)
1 NC
Switching Voltage (max.)
250 V AC
Contact Rating AC (resistive load)
8 A (250 V, 2000 VA)
Contact Rating 230 V AC-15
5 A
Contact Rating DC (resistive load)
8 A (30 V, 240 W)
Contact Rating 24 V DC-13
4 A
Thermal Current per contact
Max. 15 A total (13-14, 23-24, 33-34)
Minimum Contact Load
5 V, 10 mA
External Fuses
10 A gG (NO); 6 A gG (NC)
Switch-on Delay (max.)
< 30 ms
Switch-off Delay (max.)
< 60 ms
Relay Contact Material
AgSnO2
Relay Contact Life (cycles)
1 x 10⁷
Mechanical Data
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Wire Width
0.14 ... 2.5 mm²
Tightening Moment (min. / max.)
0.5 Nm / 0.6 Nm
Weight (typ.)
175 g
Mounting DIN Rail according EN 60715
TH35
Ambient Condition
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Degree of Protection
IP20
Ambient Temperature (operating)
-15 °C ... +55 °C
Ambient Temperature (storage/transport)
-15 °C ... +85 °C
Operating Altitude (max. above sea level)
< 2000 m
Dimensions
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Width (mm)
22.5 mm
Height (mm)
99 mm
Depth (mm)
114 mm
Commercial Data
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Customs Tariff Number
8536411090
3 N/O Safety Contacts
Three redundant relay contacts don't lead to loss of safety in case of a single fault
1 N/C Safe Contact
To put NC contact into feedback loop of other safety modules or safe PLC systems
Safe Extension Module
To expand any application with additional 3 N/O safe contacts
Coupling Safe Signals
To get galvanic isolation and power adjustment with easy installation
Single Channel Input
Possible to wire single channel applications
Cyclical Testing
Output contacts, internal logic and input circuit are tested at any switching cycle
Automatic Start
Automatic restart of application
PL e, Category 4 (EN ISO 13849-1)
TÜV certified up to PL e / Category 4
SIL CL 3 (EN 62061 / IEC 61508)
TÜV certified up to SIL 3
Housing with Plug-In Terminal Blocks
Block diagram SAFE-SIL
SAFE-SIL as Coupling Relay for fail safe PLC output
Single channel control with fail safe PLC output. (Category 4, up to PL e / SILCL 3, if the safety output meets PL e / SILCL 3 and short circuits in line between the safety output and A1 of the SAFE-SIL can be ruled out - see Advice)
Caution:
Safety contacts will be activated immediately by switching on the control line. Make sure that A2 is the correct reference potential to the switching voltage A1.
Advice:
According to ISO 13849-2 the wiring has to be in a short-circuit-proof control cabinet with a minimum degree of protection of IP54.
For example EN ISO 13849-2, table D4 - Cables within an electrical installation space in accordance with EN 60204-1.
A feedback loop for monitoring the SAFE-SIL is not necessary. However, if a feedback loop is necessary for the application, this can be achieved by wiring the feedback to the auxiliary contact 41-42.
Attention:
• Make sure that the ground potential of the signal generator and the SAFE-SIL is the same
• It must be ensured that any switch-on pulses (light test) sent by the signal generator do not lead to a short activation of the safety relay and should therefore basically be deactivated
SAFE-SIL as Expansion Module - Control with safe relay contacts
Wiring as contact extension of a basic device (Category 4, up to PL e / SILCL 3, if the safety output meets PL e / SILCL 3 and short circuits in line between the safety output and A1 of the SAFE-SIL can be ruled out - see Advice)
Caution:
Safety contacts will be activated immediately by switching on the basic device.
Advice:
According to EN ISO 13849-2 the wiring has to be in a short-circuit - proof control cabinet with a minimum degree of protection of IP54. For example, EN ISO 13849-2, table D4 - Cables within an electrical installation space in accordance with EN 60204-1.
A feedback loop for monitoring the SAFE-SIL is not necessary. However, if a feedback loop is necessary for the application, this can be achieved by wiring the feedback to the auxiliary contact 41-42.
SAFE-SIL as Expansion Module - Feedback loop automatic start.
SAFE-SIL as expansion module – feedback loop using a manual, monitored start
