Siemens 3TK28 User Manual

3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
7
Introduction
1
1.1
Purpose of this manual
Note
Original manual
The manual for the 3TK28 safety relays described below is the
original manual.
This manual contains a detailed description of the 3TK28 safety relays. This manual
provides you with the information you require to configure, commission, and use 3TK28
safety relays. Typical application examples provide you with a clear and practice-oriented
introduction.
Furthermore, the manual contains dimension drawings, circuit diagrams, and technical data
of the 3TK28 safety relays to facilitate configuration.
1.2
Required basic knowledge
A general knowledge of the following areas is needed in order to understand this manual:
● Low-voltage switchgear
● Digital circuit logic
● Automation systems
● Safety systems
1.3
Validity range
The manual is valid for the available 3TK28 safety relays. It describes the components that
are valid at the time of publication.
SIEMENS reserves the right of including a Product Information for each new component,
and for each component of a later version.

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