ID
Parameter
CL
Setting range
[Default]
Description
For information on the
LogicsManager and its default
settings see
.
5572
5585
5671
Proportional gain
2
0.001 to 65.000
[1.000]
The proportional coefficient
specifies the gain. By increasing
the gain, the response is
increased to permit larger
corrections to the variable to be
controlled.
The farther out of tolerance the
process is the larger the response
action is to return the process to
the tolerance band. If the gain is
configured too high, the result is
excessive overshoot/undershoot
of the desired value.
5573
5586
5672
Integral gain
2
0.010 to 10.000
[0.100]
The integral gain identifies the I
part of the PID controller. The
integral gain corrects for any
offset (between setpoint and
process variable) automatically
over time by shifting the
proportioning band.
The integral gain automatically
changes the output signal until
the process variable and the
setpoint are the same. The
integral gain constant must be
greater than the derivative time
constant.
If the integral gain constant is too
large, the controlled value will
continually oscillate. If the integral
gain constant is too small, the
controlled value will take too long
to settle at a steady state.
5574
5587
5673
Derivative ratio
2
0.001 to 10.000
[0.001]
The derivative ratio identifies the
D part of the PID controller. By
increasing this parameter, the
stability of the system is
increased. The controller will
attempt to slow down the action
of the actuator in an attempt to
prevent excessive overshoot or
undershoot. Essentially this is the
brake for the process.
5575
5588
5674
Time pulse minimum
1
0.01 to 2.00 s
[0.05 s]
A minimum pulse on time must be
configured here. The shortest
possible pulse time should be
configured, but the actuator
should still react safe, to limit
overshoot of the desired value
reference point. (Only three-
position controller)
5576
5589
5675
Deadband
1
0 to 32000
[10]
Shows the adjust range around
the setpoint value when no
displace impulse is issued. This
avoids an unnecessary abrasion of
relay contacts for higher/lower.
(Only three-position controller)
376
easYgen-3000XT Series
B37574
4 Configuration
4.4.4.6 PID {x} Control
Released