Dwyer 1600 User Manual
Page 17
Rev. 10/98
17
949-1239-3
OFS Manual Offset Correction Select OFF, 0.1 to
99.9%. Select OFF to switch to rES.
#rtE
(948) or
rtE
Rate Time. Select OFF, 0.01 to 99.99 minutes,
Derivative.
SLO
PID values are preset for a slow response process.
nor
PID values are preset for a normal response process.
FASt
PID values are preset for a fast response process.
Pid2
Linkage of PID parameters between SP1 and SP2: Select On or
OFF.
On
Links SP2 to SP1
or #SP1 rEs and rtE terms for heat/
cool applications.
OFF
Sp2 functions without rEs and rtE.
ArUP
Anti- Reset Wind-up Feature: Select On or OFF.
On
When ArUP is On the accumulated Reset Offset value
will be cleared to 0% when the process input is not within
the Proportional Band.
OFF
When ArUP is OFF, the accumulated Reset Offset
Value is retained in memory when the process input is
not within the Proportional Band.
ArtE
Approach Rate Time: Select OFF, 0.01 to 99.99 minutes. The
function defines the amount of Rate applied when the input is
outside of the Proportional Band. The ArtE time and the rtE
time are independent and have no effect on each other. To
increase damping effect and reduce overshoot set the approach
rate time for a value greater than the natural rise time of the
process (natural rise time = process value time to set point).
Fint
Fuzzy Logic Intensity(942): Select 0 to 100%. 0% is OFF
(disables Fuzzy Logic). The function defines the amount of
impact Fuzzy Logic will have on the output.
Fbnd
Fuzzy Logic Error Band(942): Select 0 to 4000 °F, 0 to 2222°C,
or 0 to 4000 counts. Sets the bandwidth of the Fuzzy Logic. Set
Fbnd equal to PID proportional band (Pb1) for best results.
FrtE
Fuzzy Logic Rate of Change(942): Select 0.00 to 99.99°F/sec.,
0.00 to 55.55°C/sec., or 0.00 to 99.99 counts/sec. For best initial
setting, find the degree/sec change of process value near set
point 1 with output ON 100%. Multiply this value by 3. Set FrtE
to this calculated value.