LSIS LSLV-S100 - Page 192

178
Learning Advanced Features
Code
Description
AP.20 PID Ref
Source
Selects the reference input for the PID control. If the V1 terminal is set to
PID feedback source (PID F/B Source), the V1 terminal cannot be set to
the PID reference source (PID Ref Source). To set V1 as a reference
source, change the feedback source.
Setting
Function
0
Keypad
Keypad
1
V1
-10-10V input voltage terminal
3
V2
I2 analog input terminal
[When analog voltage/current input terminal
selection switch (SW2) at the terminal block is set
to I (current), input 4-20mA current. If it is set to V
(voltage), input 0–10V voltage]
4
I2
5
Int. 485
RS-485 input terminal
7
FieldBus
Communication command via a communication
option card
9
UserSeqLink
Link the common area with the user sequence
output.
11
Pulse
TI Pulse input terminal (0-32kHz Pulse input)
When using the keypad, the PID reference setting can be displayed at
AP.17. When using the LDC keypad, the PID reference setting can be
monitored from the config mode (CNF) -06-08, set to 17 (PID Ref Value).
AP.21 PID F/B
Source
Selects feedback input for PID control. Items can be selected as
reference input, except the keypad input (Keypad-1 and Keypad-2).
Feedback cannot be set to an input item that is identical to the item
selected as the reference. For example, when Ap.20 (Ref Source) is set
to 1 (V1), for AP. 21 (PID F/B Source), an input other than the V1 terminal
must be selected. When using the LCD keypad, the volume of feedback
can be monitored using a code from the config mode (CNF) -06-08, by
setting it to 18 (PID Fbk Value).
AP.22 PID P-Gain,
AP.26 P Gain Scale
Sets the output ratio for differences (errors) between reference and
feedback. If the Pgain is set to 50%, then 50% of the error is output. The
setting range for Pgain is 0.0-1,000%. For ratios below 0.1%, use AP.26
(P Gain Scale).
AP.23 PID I- Time
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 21(I-Term Clear) and is
turned on, all of the accumulated errors are deleted.
AP.24 PID D-Time
Sets the output volume for the rate of change in errors. If the differential
time (PID D-Time) is set to 1ms and the rate of change in errors per sec is