3.4.3.4
DC/DC converter
DC/DC converters are used to provide a stable and reliable 24 V power supply for the TM15/
TM31 terminal module, the circuit breaker, and the SIMATIC S7 (optional).
3.4.3.5
SITOP Select
The SITOP Select is used to monitor and distribute the load current of the 24 V DC power
supply. The SITOP Select has four independent output channels. The output current of each
channel can be adjusted from between 3 A and 10 A.
Each channel has its own status signal.
● Channel 1 monitors the power supply for the SINAMICS modules.
● Channels 2 and 3 monitor the 24 V DC power supply in the power unit.
● Channel 4 is used to supply the customer terminals and the circuit breaker.
3.4.3.6
Power supply unit
A power supply unit is used for the 24 V power supply for the control compartment and the
power unit of the starting converter. The power supply unit has an input voltage range from
88-350 V DC.
3.4.3.7
Sirius safety relay
The safety relay monitors the status of the Emergency Off circuit, and is used to implement a
safety-related shutdown when dangerous conditions occur. LEDs indicate the operating state
and the function.
3.5
Options
3.5.1
Internal synchronizing voltage detection (option A11)
The internal synchronizing voltage detection is used to measure the line voltage.
See also
Voltage actual value sensing (Page 37)
Description
3.5 Options
SINAMICS GL150 6SL38503UM114PA0Z
Operating Instructions Rev.201910301420 MUSTER
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