Siemens SINAMICS G150 Operating Instructions Manual page 584

Functions, monitoring, and protective functions
9.4 Monitoring and protective functions
Commissioning the motor model
The thermal I2t motor model is activated via p0612.0 = 1, the expansions of the motor model
can additionally be activated via p0612.8 = 1.
Note
When commissioning the motor, thermal motor model 1 (p0612.0 = 1) including expansion
(p0612.8 = 1) is automatically activated.
Preconditions for automatic activation:
• Use of a permanent magnet synchronous motor
• There is no motor sensor
• No (other) thermal motor model is activated
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
settings
p0612.8 = 0 p0612.8 = 1
p0605 p5390
p0615 p5391
p0605 p0627 + 40 °C
1.333 (fixed p5350
value)
p0612 = 0x1 p0612 = 0x101
r0632 r0632
r0034 r0034
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Explanation
Alarm threshold
If the model motor temperature (r0632) exceeds the alarm threshold, alarm A07012
"Drive: Motor temperature model 1/3 overtemperature" is output.
Fault threshold
If the model motor temperature (r0632) exceeds the fault threshold, fault F07011
"Drive: Motor overtemperature" is output.
Rated temperature (winding)
Defines the rated overtemperature of the stator winding referred to the ambient tem-
perature.
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.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A