Dwyer 1600 User Manual

Page 16

949-1239-3

Rev. 10/98

Active set point (948): Select 1SP1, 2SP1, 3SP1, or 4SP1. Allows
setting of the multiple stages of SP1, and SP1 tuning constants.

#SP1

Set Point Value # (948): Select desired value.

#tun

(948) or

tunE

Tuning Choice: Select SELF, Pid, SLO, nor, or FASt.
SELF

The Controller will evaluate the Process and select the
PID values to maintain good control. Active for SP1
only.

Strt

Select YES or no

YES

Start Learning the Process. After the
process has been learned the menu
item will revert to no.

Learning will stay in present mode.

LErn

Select Cont or End

Cont

Continuously adjust the PID values to
maintain the best control. The Pro-
cess is being monitored at all times by
collecting and analyzing the data to
adjust the PID values. (adaptive con-
trol).

End

The Process data is collected once
and then the PID values are saved,
tuning is stopped.

dFAC Damping factor, Select OFF, 1 to 7. Sets the

ratio of Rate to Reset for the SELF tunE mode.
7 = most Rate. Factory set to 3. For a fast
response process the value should be lowered
(less Rate). For a slower process the value
should be increased (more Rate).

Pid

Manually adjust the PID values. PID control consists of
three basic parameters, Proportional Band (Gain), Re-
set Time (Integral), and Rate Time (Derivative).

#Pb1

(948) or

Pb1

Proportional Band (Bandwidth). Select 6 to
5000 °F, 3 to 2778 °C, or 6 to 9999 counts.

Pb2

Proportional Band (Bandwidth). Select 6 to
5000 °F, 3 to 2778 °C, or 6 to 9999 counts.
(Appears after #rtE when Option 948 is se-
lected.)

#rES

(948) or

rES

Automatic Reset Time. Select OFF, 0.1 to 99.9
minutes. Select OFF to switch to OFS.

#OFS

(948) or