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.
● Filter mats
Use only approved filter mats as spare part.
3.2.3
Protection and monitoring functions of internal components
The internal components 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
● Differential pressure monitor (fan failure, blocked filter mats)
● 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 6SL3810-7NN38-0AA1
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Operating Instructions Rev.201910281406 EXAMPLE
