Precision Digital PD554 - Manual (Page 34)

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The parameter to set derivation time for PID control.
Setting ranges of 1.D are OFF or 1 to 6000 seconds.
Its default setting is 30 seconds.
The parameter to set the manual reset in the PID calculation. This setting only functions if
the integral time setting is OFF. This setting always functions for H/C models.
PV
PV
Note: The contents of PID Groups 2, 3, and 4 are the same as PID Group 1.
Display Parameter Setting Range Unit Default Remark
n.MR n.Manual Reset -5.0 to 105.0% % 50.0%
For Use
When I=0
ARW
FUZY
PID
n.P
n.I
n.D
Anti-Reset Wind-
Up Select
Auto or 50.0 to 200.0% % Auto
Fuzzy OFF, ON ABS OFF
PID Number MENU (0) or 1, 2, 3 or 4 ABS MENU
n.Proportional 0.1 to 999.9% % 10.0%
n.Pro/Time OFF, 1 to 6000 sec sec 120 sec
n.Derivation time OFF, 1 to 6000 sec sec 30 sec
This parameter establishes the PV range of each of the 3 main PID zones. The range of
PID zone 1 is IN.RL (IN.SL if set for mV or V input) to 1.RP. The range of PID zone 2 is
1.RP to 2.RP. The range of PID zone 3 is 2.RP to IN.RH (IN.SH if set for mV or V input).
This parameter establishes the range of each of the 3 main PID zones. The range of PID
zone 1 is IN.RL (IN.SL if set for mV or V input) to 1.RP. The range of PID zone 2 is 1.RP
to 2.RP. The range of PID zone 3 is 2.RP to IN.RH (IN.SH if set for mV or V input).
This parameter establishes the hysteresis width of the PID zone.
This parameter sets the range of deviation for PID zone 4. When the difference between
the PV and SP is greater th an this deviation range, the controller will utilize PID group 4
for PID settings. While the PV and SP are within this deviation difference, the controller
will utilize whatever zone would normally be used based on the PV value.
PV
PV
PV
PV
1.RP
Reference
Point 1
AEU (0.0%), 1.RP < 2.RP AEU
AEU
(100.0%)
PID Zone 1
2.RP
Reference
Point 2
1.RP < 2.RP < AEU (100.0%) AEU
AEU
(100.0%)
PID Zone 2
RHY
Reference
Hysteresis
GEU (0.0 to 10.0%) GEU AEU (0.3%) PID Zone 3
RDV
Reference
Deviation
GEU (0.0 to 100.0%) GEU AEU (0.0%) PID Zone 4
C.MOD Control Mode
Differential of Deviation Value (d. dV) or
Process Variable (d. PV)
ABS d. dV
PD550 Series Nova Programmable Process and Temperature Controller Instruction Manual
34