Determining The Angular Commutation Offset / Maintaining The Tolerance - Siemens Sinamics s120 Commissioning Manual

Commissioning
3.18 Commissioning SIMOTICS T-1FW6 built-in torque motors
Check the temperature sensors in the same way as described for the SME12x Sensor
Module External (see section "Checking the temperature sensors for the Sensor Module
External SME12x"). Test each individual temperature channel by separating the connection.
3.18.6

Determining the angular commutation offset / maintaining the tolerance

NOTICE
Material damage as a result of an incorrectly commutated drive
When the system is commissioned for the first time or after an encoder/motor has been
replaced, it is possible that the drive could be incorrectly commutated if the angular
commutation offset has not yet been adjusted. Current is fed into the motor at the incorrect
time for an incorrectly commutated motor. This means it can perform inadvertent
movements. For example, it can turn with high speed in the wrong direction and so damage
a workpiece.
• Set the current limit using the p0640 parameter to 20% of p0323 (motor maximum
• Therefore, to complete commissioning, it is imperative that you check the angular
You can determine the pole position, required for synchronous motors, for the SIMOTICS T-
1FW6 built-in torque motors using a software-based automatic pole position identification
technique.
The following two techniques are suitable for all frame sizes of SIMOTICS T-1FW6 built-in
torque motors:
● The motion-based technique p1980 = 10
● The saturation-based technique (1st harmonic) p1980 = 1
Also refer to the information in Chapter "General information for setting the commutation
(Page 239)."
258
current).
commutation offset according to the following description.
STARTER Commissioning Manual
Commissioning Manual, (IH1), 07/2016, 6SL3097-4AF00-0BP5