product brand nameSIRIUS
product categorySafety relays
product designationsafety relays
design of the productSolid-state enabling circuits
product type designation3SK1
product lineAdvanced basic unit
Product Function
product function parameterizablesensor floating / sensor non-floating, monitored start-up / automatic start, 1-channel / 2-channel sensor connection, cross-circuit detection, startup testing, antivalent sensors, 2-hand switches, time delay
automatic startYes
light barrier monitoringYes
protective door monitoringYes
magnetically operated switch monitoring NC-NOYes
magnetically operated switch monitoring NC-NCYes
laser scanner monitoringYes
light array monitoringYes
EMERGENCY OFF functionYes
monitored start-upYes
pressure-sensitive mat monitoringNo
product feature cross-circuit-proofYes
suitability for interaction press controlYes
suitability for operation device connector 3ZY12Yes
monitoring of floating sensorsYes
monitoring of non-floating sensorsYes
position switch monitoringYes
EMERGENCY-OFF circuit monitoringYes
opto-electronic protection device monitoringYes
magnetically operated switch monitoringYes
safety-related circuitsYes
General technical data
certificate of suitability UL approvalYes
product feature protective coating on printed-circuit boardNo
power loss [W] maximum2 W
insulation voltage rated value50 V
degree of pollution3
overvoltage category3
surge voltage resistance rated value800 V
protection class IP of the enclosureIP20
shock resistance10 g / 11 ms
vibration resistance according to IEC 60068-2-65 ... 500 Hz: 0.75 mm
operating frequency maximum2 000 1/h
reference code according to IEC 81346-2F
Substance Prohibitance (day/month/year)11/05/2012
SVHC substance nameLead CAS-No. 7439-92-1 Lead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1
Net Weight0.158 kg
Ambient conditions
installation altitude at height above sea level maximum4 000 m
noteDerating, see Product Notification 109792701
during operation-25 ... +60 °C
during storage-40 ... +80 °C
relative humidity during operation10 ... 95 %
air pressure according to SN 31205900 ... 1 060 hPa
Electromagnetic compatibility
installation environment regarding EMCThis product is suitable for Class A environments only. In household environments, this device can cause unwanted radio interference. The user is required to implement appropriate measures in this case.
EMC emitted interferenceIEC 60947-5-1, Class A
Safety related data
product function suitable for safety functionYes
safe stateSafety outputs switched off
test wear-related service life necessaryNo
diagnostics test interval by internal test function maximum600 s
stop category according to IEC 60204-10 / 1
IEC 62061
SIL Claim Limit (subsystem) according to EN 620613
according to IEC 62061SIL 3
at single-channel evaluation according to IEC 620611
at 2-channel evaluation according to IEC 620613
PFHD with high demand rate according to IEC 620610,0000000015
ISO 13849
category according to EN ISO 13849-14
according to ISO 13849-1PL e
at single-channel evaluation according to ISO 13849-1c
at 2-channel evaluation according to ISO 13849-1e
for delayed release circuit according to ISO 13849-1e
according to ISO 13849-14
at 2-channel evaluation according to ISO 13849-14
overdimensioning according to ISO 13849-2 necessaryNo
IEC 61508
according to IEC 615083
for delayed release circuit according to IEC 61508SIL3
at single-channel evaluation according to IEC 615081
at 2-channel evaluation according to IEC 615083
safety device type according to IEC 61508-2Type B
PFHD with high demand rate according to IEC 615080.0000000015
PFDavg with low demand rate according to IEC 615080.000007
Safe failure fraction (SFF)99 %
according to IEC 615081
at single-channel evaluation according to IEC 615080
at 2-channel evaluation according to IEC 615081
of service life according to IEC 6150820 a
for proof test interval or service life according to IEC 6150820 a
Electrical Safety
touch protection against electrical shockfinger-safe
Short-circuit protection
for short-circuit protection of the NO contacts of the relay outputs requirednot required
Inputs
cascading input/functional switchingYes
feedback inputYes
start inputYes
pulse duration of the sensor input minimum60 ms
number of sensor inputs 1-channel or 2-channel1
Outputs
— instantaneous contact0
— delayed switching2
— instantaneous contact2
switching capacity current of semiconductor outputs at DC-13 at 24 V2 A
Times
at DC maximum85 ms
typical6 500 ms
maximum6 500 ms
maximum85 ms
backslide delay time after opening of the safety circuits typical40 ms
adjustable OFF-delay time after opening of the safety circuits0.5 ... 30 s
recovery time after opening of the safety circuits typical30 ms
recovery time after power failure typical6.5 s
of the ON pushbutton input minimum0.15 s
Control circuit/ Control
type of voltage of the control supply voltageDC
control supply voltage at DC rated value24 V
initial value0.8
full-scale value1.2
Installation/ mounting/ dimensions
mounting positionany
fastening methodscrew and snap-on mounting
height100 mm
width22.5 mm
depth121.6 mm
for grounded parts at the side5 mm
Connections/ Terminals
type of electrical connectionspring-loaded terminal (push-in)
with Cu 1.5 mm² and 150 nF/km per sensor circuit maximum4 000 m
solid1x (0.5 ... 1.5 mm²), 2x (0.5 ... 1.5 mm²)
finely stranded with core end processing1x (0.5 ... 1.0 mm²), 2x (0.5 ... 1.0 mm²)
finely stranded without core end processing1x (0.5 ... 1.5 mm²), 2x (0.5 ... 1.5 mm²)
for AWG cables solid1x (20 ... 16), 2x (20 ... 16)
for AWG cables stranded1x (20 ... 16), 2x (20 ... 16)
type of electrical connection plug-in socketNo