BENSHAW RSi H2 Series - Page 238

PID Control
226
890053-00-02
Code
Description
Setting
Function
0
V1
-10-10 V input voltage terminal
2
V2
I2 analog input terminal
3
I2
If the analog voltage/current input terminal selection switch
(SW4) at the terminal block is set to I (current), input 0-20
mA current. If it is set to V (voltage), input 0–10 V
4
Int. 485
RS-485 input terminal
5
FieldBus
Communication command via a communication option card
7
Pulse
TI Pulse input terminal (0-32 kHz Pulse input)
PID-21
PID Fdb AuxSrc
Selects the external input source to be used as an auxiliary feedback source
for PID control. When the external input source is selected, the reference is
determined using the input value at the source (set at PID-10) and the value
set at PID-13 PID Ref1AuxMod.
Setting
Function
0
None
Not used
1
V1
-10-10 V input voltage terminal
3
V2
I2 analog input terminal
4
I2
When the analog voltage/current input terminal selection
switch (SW4) at the terminal block is set to I (current), input
0-20 mA current. If it is set to V (voltage), input 0–10 V
6
Pulse
TI Pulse input terminal (0-32 kHz Pulse input)
7
Int. 485
RS-485 input terminal
8
FieldBus
Communication command via a communication option card
PID-22
PID Fdb AuxMod
The PID-22 (PID Fdb AuxMod) provides formulas to calculate the final
feedback value (PID-20 and PID-21). If PID-21 (PID Fdb AuxSrc) is set to any
other value than ‘None,’ the final feedback is calculated using the input values
at the two feedback sources (set at PID-20 and PID-21).
0
M+(G*A)
1
M*(G*A)
2
M/(G*A)
3
M+(M*(G*A))
4
M+G*2*(A-50)
5
M*(G*2*(A-50))
6
M/(G*2*(A-50))
7
M+M*G*2*(A-50)
8
(M-A)^2
9
M^2+A^2
10
MAX(M,A)
11
MIN(M,A)
12
(M+A)/2
13
Square Root(M+A)
M= Value by the Feedback Src set at PID-20
G= Gain value set at PID-23
A= Value by the feedback auxiliary source set at PID-21
PID-23
PID Fdb Aux G
Gain value used in a formula set at PID-22.
PID-24
PID Fdb Band
Sets the maximum and minimum value by adding or subtracting the PID Fdb
Band value (PID-24) from the reference value. When the feedback value is
between the maximum and minimum value, this parameter maintains the PID
output.