Emerson FIELDVUE DVC6200f Instruction Manual page 137

Label Index
PARAMETER_NAME Number
UBeta
73
BETA (ubeta)
IDeadBand
74
IDEADBAND
StdDev
75
STDDEV
Cap StdDev
76
CAP_STDDEV
T Request
77
T_REQUEST
T State
78
T_STATE
T Status
79
T_STATUS
T Ipgain
80
T_IPGAIN
T Ugain
81
T_UGAIN
T Uperiod
82
T_UPERIOD
T Psgain
83
T_PSGAIN
T Ptimec
84
T_PTIMEC
T Pdtime
85
T_PDTIME
T Targetop
86
T_TARGETOP
T Hyster
87
T_HYSTER
T Relayss
88
T_RELAYSS
T Gain Magnifier
89
T_GAIN_MAGNIFIER
November 2010
Table 4-32. PID Function Block System Parameters Definitions
RO / Block
Range
RW Mode
OOS > = 0, < = 1
OOS Positive
RO N/A
RO N/A
0=Request Tuning
1=Force Tuning
RO ALL
2=Reset Tuner
RO NONE
0=Scan Rate Too Low
Warning
1=Insufficient Process
Response (obsolete)
2=Scan Rate Too High
Warning
3=Inverse Direct Acting
Error
4=PV Deviation Too Large
5=Initial PV Deviation Too
Large
RO N/A
6=PV Limited or Constant
7=PV Bad
8=Invalid Mode for Tuning
9=BKCAL_IN Non Good or
Limited
10=Out Limited
11=Bypass Active
12=Mode Changed
13=Tracking Active
14=Disconnected
15=SP Changed
RO N/A
RO N/A
RO N/A
RO N/A
RO N/A
RO N/A
ALL
ALL > = 0.0
ALL > = 0.0
ALL > 0.1, < 100
−Continued−
PID Function Block
Initial Value Description
Data Type: Float
Fraction of proportional action taken on error
versus PV. For a value of 0.6, then 60% of the
proportional action will be based on error and
1.0 40% on PV. The value of BETA may be changed
over a range of 0−1 if STRUCTURE is set to Two
Degrees of Freedom Control. Otherwise, it is
automatically set to a value of 1 or 0 based on
the Structure selection.
Data Type: Float
Integral action stops when ERROR is within
0
IDEADBAND, proportional and derivative action
continue. EU of PV_SCALE
Data Type: Float
Dynamic
Standard deviation of PV.
Data Type: Float
Dynamic
Standard deviation of PV changes.
Data Type: Bit String
0
Operator request to initiate/control autotuning.
Data Type: Unsigned8
0
Current autotuner state.
Data Type: Bit String
0
Autotuner status.
Data Type: Float
0.0
Integrated process gain.
Data Type: Float
0.0
Ultimate gain.
Data Type: Float
0.0
Ultimate period.
Data Type: Float
0.0
Process static gain.
Data Type: Float
0.0
Process time constant.
Data Type: Float
0.0
Process dead time.
Data Type: Unsigned8
2
Target oscillation periods.
Data Type: Float
0.0
Hysteresis
Data Type: Float
3.0
Relay step size.
Data Type: Float
1.0
Scales amount of gain.
4
125