Siemens SINAMICS S150 NEMA, Operating Instructions Manual

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Functions, monitoring and protective functions
9.5 Monitoring functions and protective functions
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
695
9.5 Monitoring functions and protective functions
9.5.1 Protecting power components
Description
SINAMICS power modules offer comprehensive protection of power components.
Table 9- 20 General protection for power units
Protection against: Protective measure Response
Overcurrent
1)
Monitoring with two thresholds:
•
First threshold exceeded
A30031, A30032, A30033
Current limiting in phase U has responded.
Pulsing in this phase is inhibited for one pulse period.
F30017 -> OFF2 is triggered if the threshold is
exceeded too often.
• Second threshold exceeded
F30001 "Overcurrent" -> OFF2
DC link overvoltage
1)
Comparison of DC link voltage with
hardware shutdown threshold
F30002 "Overvoltage" -> OFF2
DC link undervoltage
1)
Comparison of DC link voltage with
hardware shutdown threshold
F30003 "Undervoltage" -> OFF2
Short-circuit
1)
Second monitoring threshold checked
for overcurrent
F30001 "Overcurrent" -> OFF2
Uce monitoring for IGBT module F30022 "Monitoring Uce" -> OFF2
Ground fault Monitoring the sum of all phase
currents
After threshold in p0287 is exceeded:
F30021 "power unit: Ground fault" -> OFF2
Note:
The sum of all phase currents is displayed in r0069[6].
For operation, the value in p0287[1] must be greater
than the sum of the phase currents when the
insulation is intact.
Line phase-failure
detection
1)
F30011 "Line phase-failure in main circuit" -> OFF2
1)
The monitoring thresholds are permanently set in the converter and cannot be changed by the user.