Sirius Safety Relay; Auxiliary Power Supply; Auxiliary Power Supply 1Ac 230V 50Hz; Figure 3-4 Sirius Safety Relay - Siemens SINAMICS SM120 Operating Instructions Manual

3.3.7

Sirius safety relay

The SIRIUS 3TK2825 safety relay has two enable circuits (safe circuits) in the form of normally
open contact circuits.
Figure 3-4
The operating state and functioning are indicated by three LEDs. When the EMERGENCY
STOP buttons or limit switches are released and the ON button is pressed, the internal circuit
of the safety relay and the external contactors are monitored to ensure that they are functioning
correctly.
See also
LEDs of the Sirius safety relay (Page 81)
3.3.8

Auxiliary power supply

3.3.8.1

Auxiliary power supply 1AC 230V 50Hz

The customer must provide an auxiliary power supply of 1AC 230 V for the following
components:
● Cabinet lighting
● Service socket outlets
● Anti-condensation heating
● Open-loop and closed-loop control
Refer to the drive technical data for the auxiliary power supply current rating.
SINAMICS SM120 6SL38715
Operating Instructions 07/2015
SIRIUS safety relay
Description
3.3 Components
33