Monitoring And Protective Functions; Protecting Power Components - Siemens SINAMICS S150 Operating Instructions Manual

Functions, monitoring, and protective functions

9.5 Monitoring and protective functions

9.5 Monitoring and protective functions
9.5.1

Protecting power components

Description
SINAMICS power units offer comprehensive functions for protecting power components.
Table 9-12 General protection for power units
Protection against:
Overcurrent
1)
Overvoltage
1)
Undervoltage
1)
Short-circuit
1)
Ground fault
Line phase-failure
detection
1)
The monitoring thresholds are permanently set in the converter and cannot be changed by
1)
the user.
400
Protective measure
Monitoring with two thresholds:
First threshold exceeded
•
Second threshold exceeded
•
Comparison of DC link voltage with
hardware shutdown threshold
Comparison of DC link voltage with
hardware shutdown threshold
Second monitoring threshold checked
for overcurrent
Uce monitoring for IGBT module
Monitoring the sum of all phase
currents
Response
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.
F30001 "Overcurrent" -> OFF2
F30002 "Overvoltage" -> OFF2
F30003 "Undervoltage" -> OFF2
F30001 "Overcurrent" -> OFF2
F30022 "Monitoring Uce" -> OFF2
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.
F30011 "Line phase-failure in main circuit" -> OFF2
Operating Instructions, 07/07, A5E00288214A
Drive converter cabinet units