Automationdirect.com prosense PPC5 Series User Manual page 144

Chapter 6: Control Mode Settings
Setting Details
6-28
PV Derivative Type PID (output bumpless at SP change)
SP
Deviation Derivative Type PID
The PID control method in which derivative action works for the deviation value = PV –
SP.
The derivative action works for a SP change, so this method is useful for cases like
Cascade secondary-loop control where the SP-following capability is important.
The following shows the deviation derivative type PID control computation formula.

= 100 1

e +
OUT
P Ti

where OUT: control output, e: deviation (PV-SP), P: proportional band, Ti: integral time,
and Td: derivative time
SP
PV
Parameter
Name
symbol
ALG PID control mode
PV OUT

∫
d

e dt + Td e
• •
dt

OUT
Display
level
0: Standard PID control mode
PRO
1: Fixed-point control mode.
Setting range Menu symbol
CTL
PPC Manual Revision 1