Emerson Fisher FIELDVUE DVC6000f Instruction Manual page 156

DVC6000f Digital Valve Controllers
Label
PARAMETER_NAME
UBeta
BETA (ubeta)
IDeadBand
IDEADBAND
StdDev
STDDEV
4
Cap StdDev
CAP_STDDEV
T Request
T_REQUEST
T State
T_STATE
T Status
T_STATUS
T Ipgain
T_IPGAIN
T Ugain
T_UGAIN
T Uperiod
T_UPERIOD
T Psgain
T_PSGAIN
T Ptimec
T_PTIMEC
T Pdtime
T_PDTIME
T Targetop
T_TARGETOP
T Hyster
T_HYSTER
T Relayss
T_RELAYSS
T Gain Magnifier
T_GAIN_MAGNIFIER
4-96
Table 4-31. PID Function Block System Parameters Definitions (Continued)
Index RO / Block
Number RW Mode
73 OOS > = 0, < = 1
74 OOS Positive
75 RO N/A
76 RO N/A
0=Request Tuning
1=Force Tuning
77 RO ALL
2=Reset Tuner
78 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
79 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
80 RO N/A
81 RO N/A
82 RO N/A
83 RO N/A
84 RO N/A
85 RO N/A
86 ALL
87 ALL > = 0.0
88 ALL > = 0.0
89 ALL > 0.1, < 100
Range Initial Value
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.
−Continued−
Description
December 2009