Siemens SINAMICS G115D Operating Instructions Manual page 321

Overload response for p0290 = 12
The converter responds in 2 stages:
1. If you operate the converter with increased pulse frequency setpoint p1800, then the
converter reduces its pulse frequency starting at p1800.
There is no current derating as a result of the higher pulse frequency setpoint.
Once the overload condition has been removed, the converter increases the pulse frequency
back to the pulse frequency setpoint p1800.
2. If it is not possible to temporarily reduce the pulse frequency, or the risk of converter thermal
overload cannot be prevented, then stage 2 follows:
– In vector control, the converter reduces the output current.
– In U/f control, the converter reduces the speed.
Once the overload condition has been removed, the converter re-enables the output current
or speed.
If both measures cannot prevent a power unit thermal overload, then the converter switches
off the motor with fault F30024.
Overload response for p0290 = 13
We recommend this setting for drives with a high starting torque.
If you operate the converter with increased pulse frequency, then the converter reduces its
pulse frequency starting at the pulse frequency setpoint p1800.
There is no current derating as a result of the higher pulse frequency setpoint.
Once the overload condition has been removed, the converter increases the pulse frequency
back to the pulse frequency setpoint p1800.
If it is not possible to temporarily reduce the pulse frequency, or the measure cannot prevent
a power unit thermal overload, then the converter switches off the motor with fault F30024.
Parameters
Parameter
r0036
r0037[0...19] Power unit temperatures [°C]
p0290
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
7.23 Converter protection using temperature monitoring
Description
CO: Power unit overload I 2
Power unit overload response
Setting
t [%] Displays the power unit overload determined using
the I t calculation.
2
The I t monitoring calculates the converter utiliza‐
2
tion based on a current reference value defined in
the factory.
• Actual current > reference value: r0036 be‐
comes higher.
• Actual current < reference value: r0036 be‐
comes lower or remains = 0.
Display and connector output for the temperature
in the power unit.
Sets the response to a thermal overload condition
of the power unit.
The details are described above.
Factory setting: 13
Advanced commissioning
319