Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 66

Advanced Motor Protection and RTD Protection Functions
6.15 Device 49T - Machine Thermal Model - Variable Parameter Thermal Overload
Keypad Parameter Text
Tool Parameter Help Text
Tmaxoper
HCSR
Variable Parameter Thermal Overload Hot/Cold
safe stall time ratio (HCSR) for Motor
Picklist
Enable State Out1
Fixed Parameter Thermal Overload Enable State
Enable State Out2
Fixed Parameter Thermal Overload Enable State
The maximum response time with zero delay (pickup counter=0) is 20 milliseconds.
The details of the variable thermal overload function are the same as in the case of the fixed
thermal overload function except that three of the model parameters can be varied as a function
of the speed command of the drive (% demand). Please refer to the fixed model function,
(Device 49T - Machine Thermal Model - Fixed Parameter Thermal Overload (ID 7335), for the
specific details and equations of the thermal overload model.
Heating Time Constant Menu (7355)
Keypad Parameter Text
Tool Parameter Help Text
0% Speed HTimeConst
Define Time Constant in Seconds at 0% Speed
Demnd
0% Speed HT1imeConst
Define Time Constant in Seconds at 10% Speed
Demnd
20% Speed HTimeConst
Define Time Constant in Seconds at 20% Speed
Demand
30% Speed HTimeConst
Define Time Constant in Seconds at 30% Speed
Demand
40% Speed HTimeConst
Define Time Constant in Seconds at 40% Speed
Demand
64
ID Units Default
Value
7424 °
7425
ID Units Default
7350 Disabled
7351 Disabled
ID Units
7356 min
7357 min
7358 min
7359 min
7360 min
Advanced Motor Protection for Variable Speed Operation
Minimum - Maxium Value
130 50 -572
1 0.1 - 1
Values
Value
● Disabled
● Alarm
● LatchedAlarm
● Trip
● Block Start
● Disabled
● Alarm
● LatchedAlarm
● Trip
● Block Start
Default Minimum - Maximum Value
Value
30 1 - 1000
28.5 1 - 1000
27 1 - 1000
25.5 1 - 1000
24 1 - 1000
Manual, AA, A5E46373908A