product brand name		SIRIUS
product designation		safety relays
design of the product		for EMERGENCY-STOP and safety doors
product type designation		3TK28
Product Function
product function
● automatic start		Yes
● light barrier monitoring		No
● standstill monitoring		No
● protective door monitoring		Yes
● magnetically operated switch monitoring NC-NO		No
● magnetically operated switch monitoring NC-NC		No
● rotation speed monitoring		No
● laser scanner monitoring		No
● light array monitoring		No
● EMERGENCY OFF function		Yes
● monitored start-up		Yes
● pressure-sensitive mat monitoring		Yes
suitability for interaction press control		No
suitability for use
● monitoring of floating sensors		Yes
● monitoring of non-floating sensors		No
● position switch monitoring		Yes
● EMERGENCY-OFF circuit monitoring		Yes
● valve monitoring		No
● opto-electronic protection device monitoring		No
● tactile sensor monitoring		No
● magnetically operated switch monitoring		No
● proximity switch monitoring		No
● safety switch		Yes
● safety-related circuits		Yes
General technical data
certificate of suitability UL approval		Yes
product feature cross-circuit-proof		Yes
insulation voltage rated value		300 V
surge voltage resistance rated value		4 000 V
protection class IP
● of the enclosure		IP20
● of the terminal		IP20
shock resistance		8g / 10 ms
vibration resistance according to IEC 60068-2-6		5 ... 500 Hz: 0,075 mm
operating frequency maximum		1 000 1/h
mechanical service life (operating cycles) typical		10 000 000
electrical endurance (operating cycles) typical		100 000
thermal current of the switching element with contacts maximum		6 A
Substance Prohibitance (Date)		05/01/2012
SVHC substance name		Lead monoxide (lead oxide) - 1317-36-8
Weight		0.404 kg
Ambient conditions
installation altitude at height above sea level maximum		2 000 m
ambient temperature
● during operation		-25 ... +60 °C
● during storage		-40 ... +80 °C
relative humidity during operation		10 ... 95 %
air pressure according to SN 31205		90 ... 106 kPa
Electromagnetic compatibility
installation environment regarding EMC		This 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 interference		EN 60947-5-1
Safety related data
stop category according to IEC 60204-1		0
IEC 62061
SIL Claim Limit (subsystem) according to EN 62061		3
PFHD with high demand rate according to IEC 62061		1.5E-9 1/h
ISO 13849
category according to EN ISO 13849-1		4
IEC 61508
Safety Integrity Level (SIL)
● according to IEC 61508		3
safety device type according to IEC 61508-2		Type A
Average probability of failure on demand (PFDavg) with low demand rate acc. to IEC 61508		1.3E-6 1/y
hardware fault tolerance according to IEC 61508		1
T1 value for proof test interval or service life according to IEC 61508		20 a
Electrical Safety
touch protection against electrical shock		finger-safe
Short-circuit protection
design of the fuse link for short-circuit protection of the NO contacts of the relay outputs required		gL/gG: 6 A, or quick: 10 A
Inputs
design of input
● cascading input/functional switching		No
● feedback input		Yes
● start input		Yes
number of sensor inputs
● 1-channel or 2-channel		1
Outputs
number of outputs as contact-affected switching element
● as NC contact
— for signaling function instantaneous contact		2
● as NO contact
— safety-related instantaneous contact		3
— safety-related delayed switching		0
number of outputs as contact-less semiconductor switching element
● for signaling function
— delayed switching		0
— instantaneous contact		0
● safety-related
— delayed switching		0
— instantaneous contact		0
switching capacity current of the NO contacts of the relay outputs at DC-13
● at 24 V		6 A
● at 115 V		0.2 A
● at 230 V		0.1 A
switching capacity current of the NO contacts of the relay outputs at AC-15
● at 115 V		6 A
● at 230 V		6 A
switching capacity current of the NC contacts of the relay outputs at DC-13
● at 24 V		6 A
● at 115 V		0.2 A
● at 230 V		0.1 A
switching capacity current of the NC contacts of the relay outputs at AC-15
● at 115 V		6 A
● at 230 V		6 A
wire length between sensor and electronics evaluation device with Cu 1.5 mm² and 150 nF/km maximum		1 000 m
Times
make time with automatic start
● at AC maximum		150 ms
make time with monitored start
● maximum		25 ms
backslide delay time in the event of power failure
● maximum		350 ms
recovery time after opening of the safety circuits typical		200 ms
recovery time after power failure typical		0.5 s
pulse duration
● of the sensor input minimum		25 ms
● of the ON pushbutton input minimum		25 ms
Control circuit/ Control
type of voltage of the control supply voltage		DC
control supply voltage 1 at DC rated value		24 V
operating range factor control supply voltage rated value of magnet coil at DC
● initial value		0.85
● full-scale value		1.1
operating range factor control supply voltage rated value of magnet coil at AC
● at 50 Hz		0.85 ... 1.1
● at 60 Hz		0.85 ... 1.1
Installation/ mounting/ dimensions
mounting position		any
fastening method		screw and snap-on mounting
height		138.5 mm
width		44.8 mm
depth		120 mm
Connections/ Terminals
type of electrical connection		screw terminal
type of connectable conductor cross-sections
● solid		1x (0.5 ... 4.0mm²), 2x (0.5 ... 2.5 mm²)
● finely stranded with core end processing		1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)
● for AWG cables solid		2x (20 ... 14)
● for AWG cables stranded		2x (20 ... 14)
connectable conductor cross-section
● solid		0.5 ... 4 mm²
● finely stranded with core end processing		0.5 ... 2.5 mm²
AWG number as coded connectable conductor cross section
● solid		20 ... 14
● stranded		20 ... 14
DC resistance of the cable maximum		30 !&
type of electrical connection plug-in socket		Yes