Efficient Networks S120 manual Motor data identification synchronous motor, Synchronous motor

Servo control

3.12 Motor data identification

Determined data (gamma) Data that are accepted (p1960 = 1)

Note:

The magnetic design of the motor can be identified from the saturation characteristic.

r1969 moment of inertia identified	p0341 motor moment of inertia
	* p0342 ratio between the total moment of inertia and that of the
	motor
	+ p1498 load moment of inertia
r1973 encoder pulse number identified	-

Note:

The encoder pulse number is only determined with a very high degree of inaccuracy (p0407/p0408) and is only suitable for making rough checks. The sign is negative if inversion is required (p0410.0).

3.12.2Motor data identification - synchronous motor

Synchronous motor

Table 3-13 Data determined using p1910 for synchronous motors (stationary measurement)

Determined data	Data that are accepted (p1910 = 1)
r1912 stator resistance identified	p0350 motor stator resistance, cold
	+ p0352 cable resistance
r1925 threshold voltage identified	-
r1932 d inductance	p0356 motor stator leakage inductance
	+ p0353 motor series inductance
	p1715 current controller P gain
	p1717 current controller integral-action time
r1934 q inductance identified	-
r1950 voltage emulation error	p1952 voltage emulation error, final value
voltage values
r1951 voltage emulation error, current values	p1953 voltage emulation error, current offset

Note regarding r1950 to p1953:

Active when the function module "extended torque control" is activated and activated compensation of the voltage emulation error (p1780.8 = 1).

r1973 encoder pulse number identified -

Note:

The encoder pulse number is only determined with a very high degree of inaccuracy (p0407/p0408) and is only suitable for making rough checks. The sign is negative if inversion is required (p0410.0).

r1984 Pole position identification angular difference p0431 Angular commutation offset

Note:

r1984 indicates the difference of the angular commutation offset before being transferred into p0431.

- p0410 encoder inversion actual value

Note:

If the encoder inversion is changed using MotID, fault F07993 is output, which refers to a possible change in the direction of rotation and can only be acknowledged by p1910 = -2.

96	Drive Functions
	Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4