List of parameters
Parameters
1-521
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Description:
Displays the trigger characteristic of the pole position identification routine.
The values for the characteristic of the last pole position identification routine are output every 1 ms in order to
record signals (e.g. trace).
The values for the trigger characteristic and the saturation characteristic are always output in synchronism from a
time perspective.
Dependency:
Refer to: p0325, p0329, p1980, p1981, p1982, p1983, r1984, r1985
Note:
The following information and data can be taken from the trigger characteristic.
- the value -100% marks the angle at the start of the measurement.
- the value +100 % marks the commutation angle determined from the pole position identification routine.
Description:
This function is only required for synchronous motors and can be started when commissioning for the first time or
after replacing an encoder. The function acts on the active motor data set.
When adjusting the encoder, the angular commutation offset is determined and transferred into p0431. Alarm
A07971 is output while the angular commutation offset is being determined. p1990 is automatically set to 0 after the
angular commutation offset has been determined.
p1990 = 0: Deactivated
p1990 = 1: Activated with transfer
Dependency:
Refer to: p0325, p0329, p0431, p1980, p1981, p1982, p1983, r1984, r1985, r1987, p1999
Refer to: A07971
Caution:
In order to prevent an incorrect orientation of the electrical pole position (uncontrolled motor movement), the auto-
matically determined angular commutation offset (p0431) should, for reasons of safety, be checked using one of the
following recommendations:
Recommendation 1:
Set encoderless operation (p1300 = 20 or p1404 = 0), deselect pole position identification (p1982=0), operate
under no-load conditions with a speed > p1755, read the angular error in r1778; the result in r1778 should be
approximately 0, for |r1778| > 2 degrees, add the value to p0431 - taking into account the sign - and enter in p0431.
Recommendation 2:
Set the current limit to 0 (p0640 = 0), activate travel to fixed stop (p1545 = 1), record r0089[0] (phase voltage) and
r0093 (electrically normalized pole position) (e.g. trace) while the motor is externally moved; in this case, the rising
zero crossover of the phase voltage must coincide with the 360 ° --> 0 ° step (jump) from r0093.
Recommendation 3:
Measure the phase voltage V (measure phase U with respect to the virtual star point using 3 resistors) and r0093
(electrically normalized pole position); the rising zero crossover of the phase voltage must coincide with the 360 ° --
> 0 ° step (jump) of r0093.
Recommendation 4:
Determine the average value from several results of a pole position identification routine executed as test (p1983)
at various electrical angles and add the value to p0431 - taking into account the sign and enter into p0431.
Notice:
For p1990 = 1 and with the pulses not enabled, the function is only executed the next time that the pulses are
enabled.
r1987
Pole position identification trigger characteristic / PolID trig_char
SERVO, VECTOR
(n/M)
Can be changed:
-
Calculated:
-
Access level:
3
Data type:
Floating Point
Dynamic index:
-
Func. diagram:
-
P-Group:
Motor identification
Units group:
-
Unit selection:
-
Not for motor type:
-
Expert list:
1
Min Max
Factory
setting
- [%]
- [%]
- [%]
p1990
Encoder adjustment, determine angular commutation offset / Enc_adj det ang
SERVO
Can be changed:
U, T
Calculated:
-
Access level:
3
Data type:
Integer16
Dynamic index:
-
Func. diagram:
-
P-Group:
Motor identification
Units group:
-
Unit selection:
-
Not for motor type:
-
Expert list:
1
Min Max
Factory
setting
0 1
0
