Baumuller b maXX BM2500, Operating Manual

Page: 183 / 822

Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
183
of 820
4
The parameter is writable. The controller rejects an input value, which is greater or equal
than the value "Revolutions overflow counter maximum value" (
Z
106.16
–
).
The overflow counter can be used for the following functions
m
Addition of the overflow count revolutions to the actual positioning value (
Z
106.11
–
or
Z
106.12
–
) at the encoder initialization. The Activation of the function is made by
Z
106.3
–
encoder options bit 10.
m Z
121.17
–
modulo actual position value and
Z
121.12
–
actual position value with over-
flows. The activation of this function is made by
Z
121.1
–
positioning general mode
bit 4.
106.16
Revolution overflow counter max value
This parameter specifies the maximum counter limit for the encoder revolution overflow
counter (
Z
106.15
–
) from which the overflow counter starts with 0 again.
If the value of the parameter is equal to 0 or 1, the parameter
Z
106.15
–
does not count.
The parameter is writable. The value
Z
106.15
–
is adapted to the new counting range ac-
cording to a modulo calculation, if a smaller value than the present value of
Z
106.15
–
is
written.
106.20
Offset sine
Offset correction for the sine signal. Automatically adjusted when optimization activated.
Can also be set as a fixed parameter.
106.21
Offset cosine
Offset correction for the cosine signal. Automatically adjusted when optimization activat-
ed.
Can also be set as a fixed parameter.
NOTE!
At singleturn encoders as well as at resolvers the overflow count operates as well.
The correctable ¼ revolution range is a +-¼ encoder revolution. Therefore the over-
flow count can not be corrected even after a revolution which is greater than a ¼ rev-
olution in the switched off status. After an encoder error at a rotating motor the
permitted revolution can be exceeded from the encoder information loss onward. In
both cases the overflow count of the encoder is incorrect after a restart or a re-initial-
ization!
At incremental encoders the overflow count cannot be used.