Micromod Micro-DCI: 53SL6000 Single Loop Controller - Manual (Page 85)

Table 7-3. Control Selections
(conF Menu → cn.1, cn.2 Modules)
Prompt Description Dft
SSr Setpoint Slew Rate
Specifies in engineering units per
second the maximum allowable
rate of setpoint change (or PV2 rate
of change for the in.Ld control
scheme). When employed, the
green bar represents the setpoint as
it is applied to control (slew limited),
while the green dro represents the
target setpoint value. A value of 0.0
indicates that the setpoint rate of
change is not limited. Slew values
less than 2.0 may experience
decreased timing accuracy. 0.0
StV Setpoint Track Value
Specifies in engineering units the
desired setpoint when the cS.L input
(SWSt) is 0 and the PVt (Process
Variable Tracking) path enable is
set to no. Using cS.L as the selector
control allows the setpoint track
value to be treated as either a
safety value or a fixed secondary
setpoint value. When PVT is set to
YES and the controller is not
operating in auto (PID output), the
setpoint track value is automatically
loaded with the current process
variable on the cS.A input (cS.b
input for loop 2). This provides
bumpless transfer from manual to
auto operation or from output
tracking to auto operation because
the setpoint is forced to match the
PV before the switch to auto is
made. 0.0
SPM
(cn.1
only)
Setpoint Mode Select
Determines the operation of the
setpoint push buttons when remote
setpoint operation is selected.
Selections:
Std:
setpoint push buttons have
no affect when R is selected
with the R/L push button..
K-SP:
setpoint push buttons modi-
fy K1( ratio) value when R
R is selected with the R/L
push button.
Std
K1 Remote Setpoint Ratio
This parameter and Remote
Setpoint Bias (b1) allow the remote
setpoint input to be modified prior
to input at the setpoint generator.
SP = (RSP ×
K1
) + B 1
1
Table 7-3. Control Selections
(conF Menu → cn.1, cn.2 Modules)
Prompt Description Dft
b1 Remote Setpoint Bias
This parameter and Remote
Setpoint Ratio (K1) allow the remote
setpoint to be modified prior to
input at the setpoint generator.
SP = (RSP ×
K1
) + B 1
0
cZ Control Zone
Specifies in engineering units an
area around the setpoint where the
process variable is considered to be
at setpoint (no error). When the
process variable is within this area,
the control output is held steady at
the integral value as determined by
tr and Mr. Control Zone is used to
reduce valve wear where process
dynamics cause output oscillations
(hunting) when the process is near
its setpoint.
cZ cZ
0.0
rSW Reverse Control Action
Specifies the output response
required to correct for process error.
Selections:
dir:
output must increase to
eliminate a positive error
(PV-SP).
reV: output must decrease to
eliminate a positive error
(PV-SP).
rEV
dP Decimal Point Location
Fixes the location of the decimal
point in each dro for the operator
display. Selections:
PPPP:
values between -999 and
9999.
PPP.d: values between -99.9 and
999.9.
PP.dd: values between -9.99 and
99.99.
P.ddd: values between -.999 and
9.999.
PPP.d
Section 7. Control Scheme Block 53SL6000 Instruction Manual
7-27