Siemens 440 P03413 Motor inertia kg*m2, P03423 Total/motor inertia ratio, P03443 Motor weight

Parameter Description Issue 01/06

P0341[3] Motor inertia [kg*m^2]				Min:	0.00010
CStat:	CUT	Datatype: Float	Unit: -	Def:	0.00180
P-Group:	MOTOR	Active: Immediately	QuickComm.: No	Max:	1000.00000

Sets no-load inertia of motor.

Level

3

Together with P0342 (inertia ratio total/motor) and P1496 (scaling factor acceleration), this value produces the acceleration torque (r1517), which can be added to any additional torque produced from a BICO source (P1511), and incorporated in the torque control function.

Index:

P0341[0] : 1st. Drive data set (DDS)

P0341[1] : 2nd. Drive data set (DDS)

P0341[2] : 3rd. Drive data set (DDS)

Note:

The result of P0341 * P0342 is included in the speed controller calculation. P0341 * P0342 (inertia ratio total/motor) = total motor inertia

P1496 (scaling factor acceleration) = 100 % activates acceleration pre-control for the speed controller and calculates the torque from P0341 (motor inertia) and P0342 (inertia ratio total/motor).

P0342[3]	Total/motor inertia ratio				Min:	1.000
	CStat:	CUT	Datatype: Float	Unit: -	Def:	1.000
	P-Group:	MOTOR	Active: Immediately	QuickComm.: No	Max:	400.000

Specifies ratio between total inertia (load + motor) and motor inertia.

Index:

P0342[0] : 1st. Drive data set (DDS)

P0342[1] : 2nd. Drive data set (DDS)

P0342[2] : 3rd. Drive data set (DDS)

Level

3

P0344[3] Motor weight				Min:	1.0
CStat:	CUT	Datatype: Float	Unit: kg	Def:	9.4
P-Group:	MOTOR	Active: Immediately	QuickComm.: No	Max:	6500.0

Specifies motor weight [kg].

Index:

Level

3

P0344[0] : 1st. Drive data set (DDS)

P0344[1] : 2nd. Drive data set (DDS)

P0344[2] : 3rd. Drive data set (DDS)

Note:

-This value is used in the motor thermal model.

-It is normally calculated automatically from P0340 (motor parameters) but can also be entered manually.

-Default value is depending on inverter type and its rating data.

r0345[3]	Motor start-up time		Min:	-
	Datatype: Float	Unit: s	Def:	-
	P-Group: MOTOR		Max:	-

Level

3

Displays motor start-up time. This time corresponds to the standardized motor inertia.

The start-up time is the time taken to reach rated motor speed from standstill at acceleration with rated motor torque (r0333).

Index:

r0345[0] : 1st. Drive data set (DDS)

r0345[1] : 2nd. Drive data set (DDS)

r0345[2] : 3rd. Drive data set (DDS)

P0346[3]	Magnetization time				Min:	0.000
	CStat:	CUT	Datatype: Float	Unit: s	Def:	1.000
	P-Group:	MOTOR	Active: Immediately	QuickComm.: No	Max:	20.000

Level

3

Sets magnetization time [s], i.e. waiting time between pulse enable and start of ramp-up. Motor magnetization builds up during this time.

Magnetization time is normally calculated automatically from the motor data and corresponds to the rotor time constant (r0384).

Index:

P0346[0] : 1st. Drive data set (DDS)

P0346[1] : 2nd. Drive data set (DDS)

P0346[2] : 3rd. Drive data set (DDS)

Note:

-If boost settings are higher than 100 %, magnetization time may be reduced.

-Default value is depending on inverter type and its rating data.

-An excessive reduction of this time can result in insufficient motor magnetization.

58	MICROMASTER 440 Parameter List
	6SE6400-5BB00-0BP0