Precision Digital PD540 - Manual (Page 30)

OH
(90%)
100
50
0 50 100
DB
(20%)
0 0
50
100
OL-LIMIT
(0 %)
OH-LIMIT
(105%)
OUTPUT
COOL HEAT
HYS
Fig 8: Heating PID and Cooling On/Off Outputs
Display Parameter Setting Range Unit Default Remarks
n.MR n.Manual Reset -5.0 to 105.0% % 50.0%
Used if I=0,
or H/C Model
ARW
FUZY
PID
n.P
n.I
n.D
Anti-Reset Wind-Up Auto or 50.0 to 200.0% % Auto
Fuzzy OFF, ON ABS OFF
PID Number MENU (0), 1, 2, 3, or 4 ABS MENU
n.Proportional Band 0.1 (H/C Models:0.0) to 999.9% % 10.0%
n.Integral Time OFF, 1 to 6000 seconds sec 120 sec
n.Derivative Time OFF, 1 to 6000 seconds sec 30 sec
n.DB n.Deadband -100.0 to 50.0% % 3.0%
H/C
Models Only
n.Pc
n.Ic
n.Dc
n.Proportional Band
for Cooling Side
0.0 (ON/OFF Control) or 0.1 to 999.9% % 10.0%
H/C
Models Only
n.Integral Time for
Cooling Side
OFF, 1 to 6000 sec sec 120 sec
H/C
Models Only
n.Derivative Time for
Cooling Side
OFF, 1 to 6000 sec sec 30 sec
H/C
Models Only
1.RP Reference Point 1 AEU (0.0%), 1.RP < 2.RP AEU 100.0% PID Zone 1
2.RP Reference Poin t2 1.RP < 2.RP < AEU (100.0%) AEU 100.0% PID Zone 2
RHY
Reference
Hysteresis
GEU (0.0 to 10.0%) GEU 0.3% PID Zone 3
RDV
Reference
Deviation
GEU (0.0 to 100.0%) GEU 0.0% PID Zone 4
PID Group Parameter Summary
C.MOD Control Mode
Differential of Deviation Value (d. dV) or
Process Variable (d. PV)
ABS d. dV
PD540 Series Nova Digital Process and Temperature Controller Instruction Manual
30