Control Techniques UD70 User Manual

UD70
Issue code: 70nu2
Features 8-9
_Q7% Derivative/feedforward gain
Units 0.1% per second
Range 0 to 2
31
Default 1000
Reset H = S/V S = N/A P = N/A
_Q7% defines the amount of derivative or feed-forward gain (depending on
_Q20%.0) for the PID loop. For a constant rate of change of error of 1
count per second and a gain of 1000, the output of the D term will be 1.
_Q8% Absolute slave axis position
Units Encoder lines
Range –231 to 2
31
Default -----
Reset H = S/V S = N/A P = 0
_Q8% shows the position of the slave (or feedback) encoder, relative to the
position at power up. The DPL program can change the value in this
parameter at any time.
_Q9% PID loop reference
Units Encoder lines
Range –231 to 2
31
Default -----
Reset H = S/V S = N/A P = 0
_Q9% is the position reference to the PID control loop. By setting _Q20%.1
to 1, the profiled slave axis reference (_Q4%) will be continuously written to
_Q9%. If _Q20%.1 is set to 0, the DPL program can write a position
reference directly to _Q9%, but no ramps will be applied to the reference.
_Q10% PID following error
Units Encoder lines
Range –2
31
to 2
31
Default CAL
Reset H = CAL S = CAL P = CAL
_Q10% shows the following error between the profiled position reference
(_Q9%)and the feedback position (_Q8% or _Q1%). The value calculated is
in encoder lines.

Control Techniques UD70 Specifications

General

Brand	Control Techniques
Model	UD70
Category	Control Unit
Language	English