Siemens 3TK28 User Manual

Connection
5.3 Disconnecting
3TK28 safety relays
192 Manual, 07/2016, NEB926157502000/RS-AB/003
5.3
Disconnecting
WARNING
Hazardous voltage
Can Cause Death, Serious Injury, or Property Damage.
Before starting work, therefore, disconnect the system and devices from the power supply.
Removing terminal blocks from the device
Note
Order of removal
Remove terminal block A before terminal block B, and C before D.
Note
The procedure is shown applied to the 45
mm housing. The procedure for 22.5 mm devices
is analogous.
Step
Operating instruction
Figure
1 Insert a flat-head screwdriver between the clip
of the terminal block and the front panel
①.
2
Pull the terminal block out to the front
②
.
3 Lift the terminal block out of the mechanically
coded guiderail of the device ③.

Siemens 3TK28 Specifications

General

Type	Safety relay
Mounting Type	DIN rail mounting
Type of Voltage	AC/DC
Control Supply Voltage at DC	24 V
Performance Level According to EN ISO 13849-1	PL e
Category According to EN ISO 13849-1	Category 4
Mechanical Durability	10, 000, 000 cycles
Electrical Durability	100, 000 cycles
Protection Class	IP20
Product Function	Safety Monitoring
Suitability for Use	Emergency stop, safety doors
Supply Voltage Frequency	50/60 Hz
Control Supply Voltage at AC at 50 Hz	24 V
Control Supply Voltage at AC at 60 Hz	24 V
Stop Category	0
SIL According to IEC 61508	SILCL 3
Type of Electrical Connection	Screw Connection
Rated Control Supply Voltage	24 V