Functions
8.23 Power Module protection
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
8-157
8.23 Power Module protection
8.23.1 General overload monitoring
Data
Parameter range: P0640, r0067, r1242, P0210
Warnings: A0501, A0502, A0503
Faults: F0001, F0002, F0003, F0020
Function chart number: -
Description
Just the same as for motor protection, the SINAMICS G120 provides extensive protection for
the power components. This protection concept is sub-divided into two levels:
● Warning and response
● Fault and shutdown
Using this concept, a high utilization of the power module components can be achieved
without the inverter being immediately shut down.
The monitoring thresholds for the faults and shutdowns are permanently saved in the
inverter and cannot be changed by the user. On the other hand, the threshold levels for
"Warning and response" can be modified by the user to optimize the system. These values
have default settings so that the "Fault and shutdown" thresholds do not respond.
8.23.2 Power module thermal monitoring
Data
P0290 … P0294 Parameter range:
r0036 … r0037
Warnings: A0504, A0505
Faults: F0004, F0005, F0012, F0022
Function chart number: -
Description
Similar to motor protection, the main function of the thermal power module monitoring is to
detect critical states. Parameterizable responses are provided for the user which allows the
motor system to still be operated at the power limit avoiding immediate shutdown. However,
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