Yokogawa FVX110 - Manual (Page 134)

<Appendix 5. PID Block>
A5-3
IM 01S01C01-01EN
Index Index
PID1
Index
PID2
Parameter
Name
Default
(factory setting)
Write Valid Range Description
22 8022 8122 SP_LO_LIM 0 PV_SCALE ±10% Lower limit for setpoint (SP).
23 8023 8123 GAIN 1 Proportional gain (= 100 / proportional
band).
24 8024 8124 RESET 10 Integration time (seconds).
25 8025 8125 BAL_TIME 0 Positive Unused
26 8026 8126 RATE 0 Positive Derivative time (seconds).
27 8027 8127 BKCAL_IN 0 Read-back of control output.
28 8028 8128 OUT_HI_LIM 100 OUT_SCALE ±10% Upper limit for control output (OUT).
29 8029 8129 OUT_LO_LIM 0 OUT_SCALE ±10% Lower limit for control output (OUT).
30 8030 8130 BKCAL_HYS 0.5 (%) 0 to 50% Hysteresis for release from a limit for
OUT.status.
31 8031 8131 BKCAL_OUT 0 — Read-back value to be sent to the
BKCAL_IN in the upper block.
32 8032 8132 RCAS_IN 0 Remote setpoint set from a computer,
etc.
33 8033 8133 ROUT_IN 0 Remote control output value set from a
computer, etc.
34 8034 8134 SHED_OPT 0 Action to be performed in the event of
mode shedding.
SHED_OPT defines the changes to
be made to MODE.BLK.target and
MODE.BLK.actual when the value of
RCAS_IN.status or ROUT_IN.status
becomes Bad if MODE_BLK.actual =
RCas or ROut.
See Section A5.17.1 for details.
35 8035 8135 RCAS_OUT 0 — Remote setpoint sent to a computer,
etc.
36 8036 8136 ROUT_OUT 0 — Remote control output value.
37 8037 8137 TRK_SCALE 100
0
1342
1
MAN Upper and lower scale limits used
to convert the output tracking value
(TRK_VAL) to non-dimensional.
38 8038 8138 TRK_IN_D 0 Switch for output tracking. See Section
A5.12 for details.
39 8039 8139 TRK_VAL 0 Output tracking value (TRK_VAL).
When MODE_BLK.actual = LO, the
value scaled from the TRK_VAL value
is set in OUT.
40 8040 8140 FF_VAL 0 Feedforward input value.
The FF_VAL value is scaled to a
value with the same scale as for OUT,
multiplied by the FF_GAIN value, and
then added to the output of the PID
computation.
41 8041 8141 FF_SCALE 100
0
1342
1
MAN Scale limits used for converting the
FF_VAL value to a non-dimensional
value.
42 8042 8142 FF_GAIN 0 MAN Gain for FF_VAL.
43 8043 8143 UPDATE_EVT — This alert is generated by any change
to the static data.
44 8044 8144 BLOCK_ALM — The block alarm is used for all
configuration, hardware, connection
failure or system problems in the block.
The cause of the alert is entered in
the subcode field. The first alert to
become active will set the Active status
in the Status attribute. As soon as the
Unreported status is cleared by the alert
reporting task, another block alert may
be reported without clearing the Active
status, if the subcode has changed.