LSIS LSLV0055H100-4COFN - Page 181

167
Learning Advanced Features
Code
Description
PID-24
PID Fdb Band
Sets the maximum and minimum value by adding or subtracting the
PID Fdb Band value (set at PID-24) from the reference value. When
the feedback value is between the maximum and minimum value, this
code maintains the PID output.
PID-25
PID P-Gain1
PID-32
PID P-Gain2
Set the output ratio for differences (errors) between the reference and
feedback. If the P Gain is set to 50%, then 50% of the error is output.
PID-26
PID I- Time 1
PID-33
PID I- Time 2
Sets the time to output accumulated errors. When the error is 100%,
the time taken for 100% output is set. When the integral time (PID I-
Time) is set to 1 second, 100% output occurs after 1 second of the
error remaining at 100%. Differences in a normal state can be
reduced by PID I Time. When the multi-function terminal block is set to
‗24 (I-Term Clear)‘ and is turned on, all of the accumulated errors are
deleted.
PID output (final frequency reference) is affected by the gains set at
PID-26, PID-33, and the Acc/Dec times to achieve the PID output
change based on the DRV-03 and DRV-04 settings. Therefore,
consider the relationship between these values when configuring the
gains and the Acc/Dec times.
PID-27
PID D-Time 1
PID-34
PID D-Time 2
Sets the output volume for the rate of change in errors. If the
differential time (PID D-Time) is set to 1 ms and the rate of change in
errors per sec is 100%, output occurs at 1% per 10 ms.
PID-28 PID FF-Gain
Sets the ratio that adds the target to the PID output. Adjusting this
value leads to a faster response.
PID-29
PID Out LPF
Used when the PID controller output changes too quickly or the entire
system is unstable, due to severe oscillation. In general, a lower value
(default value=0) is used to speed up response time, but in some
cases a higher value increases stability. The higher the value, the
more stable the PID controller output is, but the slower the response
time.
PID-30 PID Limit Hi,
PID-31 PID Limit Lo
Limit the output of the controller.
PID-35
PID Out Mode
Selects one of the PID output modes to modify the PID output.
Modifications can be made by adding input values and the main
operation frequency of the PID output to the final PID output value.
The following table lists the 4 modes that are available.
Setting
0
PID Output