Siemens SIMATIC ET 200pro - 9.1 Rules for wiring

Setting functions
8.6 Protection and monitoring functions
SIMATIC ET 200pro FC-2 converter
132 Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
Parameter
Explanation
p5312
Moment of inertia precontrol linear positive
(factory
setting: 0 1/s
2
)
In a positive direction of rota-
tion:
Moment of inertia = p5312 ×
load torque + p5313
p5313
Moment of inertia precontrol constant positive
(fac-
tory setting: 0 kgm
2
)
p5314
Moment of inertia precontrol linear negative
(factory
setting: 0 1/s
2
)
In a negative direction of rota-
tion:
Moment of inertia = p5314 ×
load torque + p5315
p5315
Moment of inertia precontrol constant negative
(factory setting: 0 kgm
2
)
8.6
Protection and monitoring functions
The frequency inverter offers protective functions against overtemperature and overcurrent
for both the frequency inverter as well as the motor. Further, the frequency inverter protects
itself against an excessively high DC link voltage when the motor is regenerating.
8.6.1
Inverter temperature monitoring
The inverter temperature is essentially defined by the following effects:
● The ambient temperature
● The ohmic losses increasing with the output current
● Switching losses increasing with the pulse frequency
Monitoring types
The inverter monitors its temperature using the following monitoring types:
● I
2
t monitoring (alarm A07805, fault F30005)
● Measuring the chip temperature of the Power Module (alarm A05006, fault F30024)
● Measuring the heat sink temperature of the Power Module (alarm A05000, fault F30004)