red lion T16 Manual page 9

The values shown for the displays are the factory settings.
SETPOINT VALUE (SP1) *
)&
.555
6
T16
67 6
P16
SETPOINT VALUE (SP2) *
)&
.555
86
T16
87 6
P16
Typically, the controller is operating with the Setpoint value in
the bottom display. There is no annunciator nor parameter
indication for Setpoint in the Display Loop. The parameter name
alternates with the setpoint value in the Hidden Loop. The
Setpoint value can be changed, activated and stored by pressing
the arrow keys. This is the only parameter that can be configured
as read only in the Display Loop, but read/write in the Hidden
Loop. It is possible to store a second Setpoint value that can be
selected in the Hidden Loop, by the F1 key or the user input.
Both Setpoint values are limited by the Setpoint Low and High
0.1(
Limits in Input Module .
% OUTPUT POWER *
"&
.066 0667 6
to
67 6
The % Output Power is shown with the %PW annunciator.
The parameter name alternates with the % Output Power value
in the Hidden Loop. While the controller is in Automatic Mode,
this value is read only. When the controller is placed in Manual
Mode, the value can be changed, activated and stored by
pressing the arrow keys. For more details on % Output Power,
see Control Mode Explanations.
OUTPUT POWER OFFSET
"
"&"/
.066 0667 6
to
!
67 6
When the Integral Time is set to zero and the controller is in
the Automatic Mode, this parameter will appear after % Output
Power. It is also shown with the %PW annunciator illuminated.
The power offset is used to shift the proportional band to
compensate for errors in the steady state. If Integral Action is
later invoked, the controller will re-calculate the internal integral
value to provide "bumpless" transfer and Output Power Offset
will not be necessary.
PROPORTIONAL BAND
"
&+;&
67 6 5557 5
to
!
(% of full input range)
<7 6
The proportional band should be set to obtain the best
response to a process disturbance while minimizing overshoot.
A proportional band of 0.0% forces the controller into On/Off
Control with its characteristic cycling at Setpoint. For more
information, see Control Mode and PID Tuning Explanations.
5555
to
!
proportional band to eliminate error in the steady state. The
higher the integral time, the slower the response. The optimal
integral time is best determined during PID Tuning. If time is set
to zero, the previous Integral output power value is maintained.
Offset Power can be used to provide Manual Reset.
5555
to
!
a derivative time, coupled with noisy signal processes, may
cause the output to fluctuate too greatly, yielding poor control.
Setting the time to zero disables derivative action.
!
here. The value is either absolute (absolute alarm types) or
relative to the Setpoint value (deviation and band alarm types.)
When Alarm 1 is programmed for
not available. For more details on alarms, see Alarm Module
!
here. The value is either absolute (absolute alarm types) or
relative to the Setpoint value (deviation and band alarm types.)
When Alarm 2 is programmed for
not available. For more details on alarms, see the Alarm Module
<.:#
* Alternating indication only used in the Hidden Loop.
9
INTEGRAL TIME
"
12,,
6 to 5555 seconds
086
Integral action shifts the center point position of the
DERIVATIVE TIME
"
-'+,
6 5555
to seconds per repeat
36
Derivative time helps to stabilize the response, but too high of
ALARM 1 VALUE
"
:#.0
.555
to
6
T16
67 6
P16
On models with alarms, the value for Alarm 1 can be entered
*':,
ALARM 2 VALUE
"
:#.8
.555
to
6
T16
67 6
P16
On models with alarms, the value for Alarm 2 can be entered
4;;#
.
5555
or , this parameter is
(;2'
<.:# .
5555
or , this parameter is
(;2'