Siemens SINAMICS S120 Function Manual page 642

Monitoring functions and protective functions
9.5 Thermal motor protection
Important settings
The most important parameters for thermal motor model 1 and/or for the expansion of this
model are subsequently explained.
When the expansion is subsequently activated, the corresponding parameters of the
expansion are preassigned with the parameter values before activating the expansion.
Parameters for the following
p0612.08 = 0
1.333 (fixed
p0612 = 0x1
Taking into account the ambient temperature
If, for thermal motor model 1, a temperature sensor has not been the parameterized, then
motor module 1 automatically uses an ambient temperature of 20°C for the calculation. You
can enter one of these ambient temperatures deviating from the standard temperature as
follows:
1. Activate the setting p0612.12 = 1.
This enables parameter p0613. The factory setting is 20° C.
2. If you wish to take into account an ambient temperature, which deviates from the factory
setting, in the motor model, then enter the expected ambient temperature in p0613.
Note
When commissioning the motor, the setting p0612.12 = 1 is automatically activated. p0613
can be parameterized when required.
642
settings:
p0612.08 = 1
p0605 p5390
p0615 p5391
p0605 p0627 + 40°C Rated temperature (winding)
p5350
value)
p0612 =
0x101
r0632 r0632
r0034 r0034
Explanation
Alarm threshold
If the model motor temperature (r0632) exceeds the alarm thresh-
old, alarm A07012 "Drive: Motor temperature model 1/3 over-
temperature" is output
Fault threshold
If the model motor temperature (r0632) exceeds the fault threshold,
fault F07011 "Drive: Motor overtemperature" is output.
Defines the rated overtemperature of the stator winding referred to
the ambient temperature.
Boost factor
Defines the boost factor for the copper losses at standstill.
Activation
Activates the motor module and/or additionally the expansion.
Actual temperature
Indicates the stator winding temperature of the motor temperature
model.
Motor utilization
Indicates the actual motor utilization level.
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Drive functions