Precision Digital PD554 - Manual (Page 31)

5.6 Inner Signal Group (G.IS)
Press SET/ENT key to select the inner signal group. (Refer to parameter map)
The parameter to set the basis of inner signal activation. The settings are NPV (current
value of the PV), NSP (current value of the SP), or TSP (target set point of the current
program segment ). Its default setting is NPV.
This parameter sets the inner signal activation zone to be inside or outside the IS band.
When the value set in 1.ISB enters the inner signal zone, outputs set to inner signal 1 will
activate. The settings are I.BD (in band) and O.BD (out band) where the bands are
determined by the values in 1.ISH and 1.ISL (See Fig 7).
The parameter to establish the high value for the setup of the inner signal band.
The parameter to establish the low value for the setup of the inner signal band.
The parameter to set the inner signal delay. This is the delay time from when the inner
signal activation conditions are met to when the outputs activate.
PV
PV
PV
PV
PV
PV
.
.
. The parameters used to setup inner signal 2 is the same as those used for inner signal 1.
Fig 7: Inner Signal Zones
IS 1 Zone
IS 2 Zone
2.ISH
1.ISH
2.ISL
1.ISL
a) 1.ISB and 2.ISB are set as I.BD
IS 1 Zone
IS 2 Zone
1.ISH
2.ISH
2.ISL
1.ISL
b) 1.ISB is set to I.BD and 2.ISB is set to O.BD
IS 1 Zone
G.AT Q G.PID Q PWD Q G.CTL Q G.IS Q G.DO
K R
G.COM Q G.RET Q G.ALM Q G.OUT Q G.IN
ST ST ST ST ST
ST
ST ST ST ST
T
PD550 Series Nova Programmable Process and Temperature Controller Instruction Manual
31