Control Techniques UD70 User Manual page 111

_
Q20%.31
_
Q21%
Units
Range
Default
Reset
_
If Q20%.5 is set to 1,
encoder when the freeze input on the Second Encoder Module is activated.
_ Q20%.5 is reset to zero once the value has been latched.
_
Q22%
Units
Range
Default
Reset
If _ Q20%.5 is set to 1,
(or reference) encoder when the freeze input on the Second Encoder
Module is activated.
latched.
_
Q24%
Units
Range
Default
Reset
_ Q24% shows the speed of the auxiliary (or reference) encoder. This value
is calculated directly from the encoder lines and is not filtered.
UD70
Issue code: 70nu2
_
Q20%.31 provides a means of enabling and disabling the position
loop while the drive is running. #17.12 must be programmed and
stored to configure the position loop, but the REINIT command does
not re-read parameter #17.12.
_
NOTE: when Q20%.31 is set to 1, all position parameters are reset to
_ _
zero, except Q8%, Q0% and #91.02. This means that the last
calculated speed reference value will remain in #91.02, and the drive
will continue to run at that speed. The DPL program should ensure
_
that Q0% and #91.02 are to reset to zero when
0 enable position loop
1 disable position loop
Feedback encoder freeze value
Encoder lines
31 31
–2 to 2
-----
H = S/V S = N/A P = N/A
_
Q21% stores the absolute position of the feedback
Auxiliary encoder freeze value
Encoder lines
31 31
–2 to 2
-----
H = S/V S = N/A P = N/A
_ Q22% stores the absolute position of the auxiliary
_ Q20%.5 is reset to zero once the value has been
Auxiliary encoder speed feedback
Encoder lines per second
31 31
–2 to 2
CAL
H = CAL S = CAL P = CAL
_
Q20%.31 is set.
Features 8-13