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Wiring; Fig. 4-3: Overview Of The Terminal Cross Sections/Maximum Permissible Torques - Siemens 3TK2845 Manual

Safety relays, multifunction device
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Mounting, Wiring, Initial Start-up
4.2

Wiring

The 3TK2845 multifunction device is available either with screw connections or
spring-loaded terminal connections.
Please refer to the table below for the required terminal cross sections and
maximum permissible torques.
1
DIN ISO 2380 -1A 0,5 x 3
~10°
2
~10°
5
5

Fig. 4-3: Overview of the terminal cross sections/maximum permissible torques

Warning
Use a power pack complying with IEC 60 536 safety class III (SELV or PELV) as
the power supply.
Caution
For the non-floating outputs (24, 44, 48, 52) it must be ensured that the actuators
or consumers to be switched have the same earth potential as the 3TK2845.
Notice
External loads must be equipped with a protective circuit which is suitable for the
respective load (e.g. RC elements, varistors, suppressors) to reduce electromag-
netic interference and to enhance the service life of the OSSD.
The 3TK2845 multifunction device is ready for operation after the power supply
is connected at terminals A1 and A2. The device runs a self-test during which
4-4
7
3
4
4
3
3RP1903
7
8
3TK2845-1... 3TK2845-2...
0.8 ... 1.2 Nm
7 ... 10.3 lb-in
∅ 5 ... 6 mm / PZ2
1 x 0.5 ... 4.0
10
mm²
2 x 0.5 ... 2.5
mm²
2 x 0.5 ... 1.5
10
mm²
1 x 0.5 ... 2.5
mm²
10
3TK2845 Multifunction Device Manual
GWA 4NEB 926 2087-22 DS 01
2 x 0.25 ... 1.5
mm²
2 x 0.25 ... 1.5
mm²
2 x 0.25 ... 1.5

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