3.2.3
Protection and monitoring functions of internal components
The internal components of the converter have the following protection and monitoring
functions:
• Converter protection based on monitoring systems:
– Current monitoring
– Output voltage monitoring
– Thermal monitoring of the DC link reactor
– Insulation monitoring
– Supply voltage monitoring
– Circuit breaker monitoring
– Heat exchanger 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
3.2.4
Protection and monitoring functions for external components
Transformer and motor can be monitored in the device. A fast protective shutdown that you can
activate for external problems, e.g. short-circuits, is present.
3.3
Power unit
3.3.1
Power unit components
Note
Power unit components
The components described in this chapter are based on the retrofit from SIMOVERT S technology
to SINAMICS GL150 technology. Differences can occur when upgrading a converter not
manufactured by Siemens.
Description
3.3 Power unit
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
25
