HEIDENHAIN iTNC 530 HSCI - Temperature Model, Second Order

916 HEIDENHAIN Technical Manual iTNC 530 HSCI
Temperature
model,
second order
The following values (entries in the motor table) are required for the second-
order temperature model to calculate the temperature (default values [axis/
spindle] are valid for the entry "0"):
 F-DC [Hz]:
Lower limit frequency for the transition of traverse to standstill with the CC
6xxx.
F-DC = 0 – Default value (0 Hz) is active
F-DC > 0 – Input value in Hz is active
 T-DC [s]:
Thermal time constant for operation at standstill (not evaluated at present)
 F-AC [Hz]:
Upper limit frequency for the transition from standstill to traverse.
F-AC = 0 – Default value (0 Hz) is active
F-AC > 0 – Input value in Hz is active
 Tth
1
[s]:
Thermal time constant for the transition from winding to housing
Tth
1
= 0 – Default value (0 s) is active
Tth
1
> 0 – Input value in [s] is active
 Rth
1
[K/W]
Thermal resistance for the transition from winding to housing.
Rth
1
= 0 – Default value: 0 K/W
Rth
1
> 0 – Input value in [K/W] is active
 Tth
2
[s]:
Thermal time constant for the transition from housing to coolant
Tth
2
= 0 – Default value: 10 s for axes, 150 s for ball screw
Tth
2
> 0 – Input value in [s] is active
 Rth
2
[K/W]:
Thermal resistance for the transition from winding to coolant
Rth
2
= 0 – Default value: 0 K/W
Rth
2
> 0 – Input value in [K/W] is active
 When the CC starts up, the current motor temperature (KTY sensor) is taken
into the calculation model in order, for example, to compensate any
excessive temperatures.
Note
 All parameters have to be entered for the model to become active. If a
parameter is missing, the first-order temperature model becomes active,
either with the thermal time constant "Tth2" or with "T-AC."