Configuration
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
190
of 820
4.4
137.1 Number of pulses
Displays the number of pulses or the number of pole pairs of the encoder or serves for
the setting of the encoder.
The PPR count in the parameter >137.1< must be entered and saved at length measur-
ing devices with sinusoidal tracks.
m If the length measuring device is used to operate a linear motor the PPR count is
calculated as follows:
In parameter Z137.33– the read length of the signal period is shown at EnDat
2.1
or Hiperface
.
The pole pitch ("length of a magnet") is described in the motor data sheet.
It is recommended to use the value 1 for the pole pair number. If the PPR count
doesn't amount to an integer, then the pole pair number must be increased until an
integer is reached.
Alternatively the PPR count calculation can be performed in ProDrive under "Con-
figurationMotor\Linear-Motor".
Hereby, >107.67< Pole pitch, Z107.19– Pole pair number >106.28< Division dis-
tance measuring system (accords to the length of the signal period) must be entered
and "Calculate rotary parameters" must be pressed. The PPR count in the parame-
ter >137.1< is entered.
m If the length measuring device is used to control the position only (Z18.9– Controller
options bit 0 = 1) the user must set the PPR count accordant to the existing mechan-
ical structure.
Type of encoder Meaning Remark
Resolver Number of pole pairs of the
resolver
Data must be entered using
the data sheet and saved in
the data set
Square-wave incremental
encoder
Number of pulses of the
incremental encoder
Sine-Cosine encoder Number of sine periods per
revolution
SSI encoder Number of sine periods per
revolution
Sine-Cosine encoder with
EnDat
®
2.1 or Hiperface
®
Number of sine periods per
revolution
Rotary encoder: The value
will be read out automatically
from the encoder
Length measuring devices:
The user must enter the
value
PPR count
2 Pole pair number Pole pitch [mm]
Length of the signal period [mm]
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