Dwyer 32DZ - Manual (Page 22)

949-1318 Page 22 of 40 June, 2000
center of the proportional band, a pulse
value of 1 provides an output of one sec-
ond on and one second off (50% output). A
pulse value of 2 provides an output of one
second on and two seconds off (33% out-
put). Output at center of band equals one
second on, 2
(pulse value-1) seconds off.
ProP For Current (Code 5) outputs only.
tun2 tun2 tun2 tun2 tun2 Tuning Choice: Select SELF SELF SELF SELF SELF , Pid Pid Pid Pid Pid , SLO SLO SLO SLO SLO , nor nor nor nor nor , or FASt FASt FASt FASt FASt .
SELF SELF SELF SELF SELF The Controller will evaluate the Process and se-
lect the PID values to maintain good control.
Lrn2 Lrn2 Lrn2 Lrn2 Lrn2 Select YES YES YES YES YES or no no no no no
YES YES YES YES YES Start Learning the Process. After
the process has been learned the
menu item will revert to
no no no no no .
no no no no no Learning will stay in present mode.
dFC2 dFC2 dFC2 dFC2 dFC2 Damping factor, Select OFF OFF OFF OFF OFF , 1 11 11 to 7 77 77 . Sets
the ratio of Rate to Reset for the SELF tunE
mode. 7 77 77 = most Rate. Factory set to 3 33 33 . For
a fast response process the value should
be lowered (less Rate). For a slower pro-
cess the value should be increased (more
Rate).
Pid Pid Pid Pid Pid Manually adjust the PID values. PID control con-
sists of three basic parameters, Proportional Band
(Gain), Reset Time (Integral), and Rate Time
(Derivative).
Pb2 Pb2 Pb2 Pb2 Pb2 Proportional Band (Bandwidth). Select 1 11 11 to
9999 9999 9999 9999 9999 °F, °C, or counts.
rES2 rES2 rES2 rES2 rES2 Automatic Reset Time. Select OFF OFF OFF OFF OFF , 0.1 0.1 0.1 0.1 0.1 to
99.9 99.9 99.9 99.9 99.9 minutes. Select OFF OFF OFF OFF OFF to switch to OFS2 OFS2 OFS2 OFS2 OFS2 .
OFS2 OFS2 OFS2 OFS2 OFS2 Manual Offset Correction Select OFF OFF OFF OFF OFF , 0.1 0.1 0.1 0.1 0.1 to
99.9 99.9 99.9 99.9 99.9 %. Select OFF OFF OFF OFF OFF to switch to rES2 rES2 rES2 rES2 rES2 .
rtE2 rtE2 rtE2 rtE2 rtE2 Rate Time. Select OFF OFF OFF OFF OFF , 0.01 0.01 0.01 0.01 0.01 to 99.99 99.99 99.99 99.99 99.99 min-
utes, Derivative.
SLO SLO SLO SLO SLO PID values are preset for a slow response pro-
cess.
nor nor nor nor nor PID values are preset for a normal response
process.
FASt FASt FASt FASt FASt PID values are preset for a fast response process.
ArS2 ArS2 ArS2 ArS2 ArS2 Anti- Reset Windup Feature: Select On On On On On or OFF OFF OFF OFF OFF .
On On On On On Reset Offset value will be cleared to 0% when the
process input is not within the Proportional Band.