Siemens SINAMICS S120 Function Manual page 150

Servo control
4.13 Motor data identification
If there is an extended setpoint channel (r0108.08 = 1), p1959.14 = 0 and p1959.15 = 0 and
direction limiting (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 motor data identification.
Note
If a ramp-up/ramp-down time or direction limiting is active, parts of the motor data
identification routine cannot be executed. 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 limiting selected (p1959.14 = 1 and
p1959.15 = 1).
Motor movement during the motor data identification
The stationary motor data identification can result in slight movement of up to 210 degrees
electrical.
For the rotating motor data identification routine, motor motion is initiated, which can reach
the maximum speed (p1082) and the motor torque corresponding to the maximum current
(p0640).
The rotating measurement should be carried out with a motor running at no load (de-coupled
from the mechanical system) in order to prevent damage/destruction to the load or be
influenced by the load. If the motor cannot be de-coupled from the mechanical system, then
the stress on the mechanical system can be reduced by parameterizing the ramp-up time
(p1958) and/or using direction limiting (p1959.14/p1959.15) or using the current and speed
limit.
Unexpected motor motion during motor data identification
Motor movement caused by the motor data identification routine can result in death, severe
injury or material damage.
• Ensure that nobody is in the hazardous zone - and that the mechanical system can
• Do not carry out the rotating measurement if the traversing distance is mechanically
150
WARNING
freely move.
limited.
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Drive functions