CXD3018Q/R
• Input coefficient sign inversion when SFID = 1 and THID = 1
The preset coefficients for the TRK filter are negative for input and positive for output. With this, the CXD3018Q/R
outputs servo drives which have the reversed phase of input errors.
Negative input coefficient
K19
Positive output coefficient
K22
TE
SE
TRK filter
SLD filter
Negative input coefficient
K00
Positive output coefficient
K05
Positive input coefficient
K40
Positive output coefficient
K45
TRK Hold
TRK Hold filter
When SFID = 1, the TRK filter negative input coefficient is applied to the SLD filter, so the SLD input coefficient
(K00) sign must be inverted. (For example, inverting the sign for coefficient K00: E0h results in 20h.)
For the same reason, when THID = 1, the TRK hold input coefficient (K40) sign must be inverted.
Negative input coefficient
K19
Positive output coefficient
K22
TRK filter
MOD
TE
SE
Positive input coefficient
K00
Positive output coefficient
K05
SLD filter
Negative input coefficient
K40
Positive output coefficient
K45
TRK Hold filter
TRK Hold
For TRK servo gain normal
See §5-20. Filter Composition".
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ETC [ ETC ]
