3.2.2
External safety components
The following external components for the safety concept are provided:
● Circuit breaker
More detailed information is provided in Chapter Circuit-breaker (provided by the customer)
(Page 36).
● Input-side transformer
The transformer on the input side must be configured in such a way that the maximum short-
circuit current is not exceeded. Information on this is provided in the technical data sheet of
the transformer.
3.2.3
Protection and monitoring functions of internal components
The internal components of the drive have the following protection and monitoring functions:
● Crowbar
● Device protection using monitoring systems:
– Current monitoring
– DC-link monitoring
– Output voltage monitoring
– Thermal monitoring of the power unit
– Precharge monitoring
– Insulation monitoring
– Supply voltage monitoring
– GSV monitoring
– Circuit-breaker monitoring
– Re-cooling unit monitoring
● Shutdown in the event of semiconductor failure
● Shutdown in the event of control component failure
● Internal protection functions for the control hardware
● Protection against communication failure between the closed-loop control and the power
unit
● Anti-condensation heating
Description
3.2 Safety concept
SINAMICS SM150 6SL3815-7NP41-0AA1
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Operating Instructions Rev.201910281301 EXAMPLE
