ControlMaster CM10, CM30 and CM50
Universal process controllers,
1
/
8
,
1
/
4
and
1
/
2
DIN
6 Basic Level
IM/CM/S–EN Rev. R
31
…Basic / …Loop 1 Control / …PID
Derivative Time 1
Set in seconds.
Manual Reset
When the
Integral Time
is
Off,
the manual reset parameter is activated. When the process
variable is equal to the control setpoint, the output value is equal to the manual reset value.
Note
: The controller is shipped with null PID values (P=100, I=off & D=0). To enable the controller to control the process
it is connected to, these values must be tuned accordingly. This can be achieved via the AutoTune function or manual
adjustment. If the controller is tuned manually the table below provides details of some suggested values to start from.
These values are only suggested starting values and should not be used as an alternative to proper tuning of the Controller.
Process Type
P
I
Temperature (fast)*
10
30
Temperature (slow)*
10
300
Pressure (fast)
100
1
Pressure (slow)
10
30
Level (fast)
100
1
Level (slow)
10
30
Flow
100
1
*For temperature loops, control performance can be improved via the use of Derivative.
A suggested starting value is
1
/
6
th
of the Integral value.
