Motor Data Identification - Siemens Sinamics S110 Function Manual

Drive functions
7.1 Servo control
7.1.12

Motor data identification

Description
Motor data identification (MotID) provides a means of determining motor data (of third-party
motors, for example). The drive system must have been commissioned for the first time as
basis for using MotID. To do this, either the electrical motor data (motor data sheet) or the
rating plate data must be entered and the calculation of the motor/control parameters
(p0340) must have been completed.
Commissioning involves the following steps:
● Enter the motor data or the rating plate data and the encoder data
● Complete calculation of the motor and control data as starting value for the MotID (p0340
● Carry out a static measurement (p1910)
● For synchronous motors: Carry out an angular commutation calibration (p1990) and if
● Carry out a rotating measurement (p1960)
Note
Completion of the individual identification runs can be read via parameters r3925 to
r3928.
The enable signals OFF1, OFF2, OFF3 and "enable operation" remain effective and can be
interrupt the motor identification routine.
If there is an extended setpoint channel (r0108.08 = 1), parameters p1959.14 = 0 and
p1959.15 = 0 and a direction of rotation limit (p1110 or p1111) is active there, then this is
observed at the instant of the start via p1960. For p1958 = -1, the ramp-up and ramp-down
time of the setpoint channel (p1120 and p1121) are also used for the MotID.
Note
If a ramp-up/ramp-down time or one direction of rotation limit is activated, parts of the motor
data identification routine cannot be carried out. For other parts of the motor data
identification routine, the accuracy of the results is diminished because a ramp-up/ramp-
down time is selected. If possible, p1958 should be 0 and no direction of rotation limit
selected (p1959.14 = 1 and p1959.15 = 1).
154
= 3, if motor data, p0340 = 1, if rating plate data were entered)
required, fine synchronization (refer to r1992)
Before starting the rotating measurement, the speed controller setting should be checked
and optimized (p1460, p1462 and p1470, p1472).
It is preferable if the rotating MotID is carried out with the motor de-coupled from the
mechanical system. This therefore means that only the motor moment of inertia is
determined. The total moment of inertia with mechanical system can be subsequently
identified with p1959 = 4 and p1960 = 1. The stress on the mechanical system can be
reduced by parameterizing the ramp-up time (p1958) and/or using a speed limit
(p1959.14/p1959.15) or using the current and speed limit. The higher the selected ramp-
up time, the less accurate the moment of inertia determined.
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual