N960 Controller
NOVUS AUTOMATION
3/6
T SP
Level Time
: Time interval in
minutes
, that the process
must remain in the temperature defined in SP.
Adjustable from 0 to 9999.
It is available when the
Rate
option is selected in the
Pr.ty
parameter of the Input cycle.
E pr
Enable
Program
Program Execution
– It determines the level and ramp
program execution.
Yes
Executes program
No
Does not execute program
With enabled outputs (
RvN
=
YES
), the selected
program immediately enters in execution.
It is available when the
Pr
option is selected in the
Pr.ty
parameter of the Input cycle.
Rvn
Run
Screen that enables or disables action of the controller
over the process. It acts as a switch, turning the
controller on or off.
YES
Outputs enables.
NO
Outputs not enabled.
TUNING LEVEL
Atvn
A
uto
tun
e
AUTO-TUNE
: It enables automatic tuning of the PID
parameters (
pb
,
ir
,
dt
). See chapter Determine PID
Parameters herein and at
www.novusautomation.com
for more details.
YES
-Auto-tune enable
NO
-Do not execute auto tune
Pb
P
roportional
b
and
PROPORTIONAL BAND
: Value of the term
P
of the
control mode PID. In percentage of the maximum
span of the input type.
When set to zero (
0
), control action is
ON/OFF
.
Adjust of between 0 and 500.0 %.
Ir
I
ntegral
r
ate
INTEGRAL RATE
: Value of the term
I
of the control
mode PID, in repetitions per minute. This constant is
not used when controller is set to ON/OFF action
(
Pb
=
0
). Adjustable between 0.00 and 55.20.
Dt
d
erivative
t
ime
DERIVATIVE TIME
: Value of the term
D
of the control
mode PID, in seconds. This constant is not used when
controller is set to ON/OFF action (
Pb
=
0
). Ajustable
between 0 and 250.
(t
C
ycle
t
ime
CYCLE TIME
: Pulse Width Modulation (PWM) period
in seconds. This constant is not used when controller
is set to ON/OFF action (
Pb
=
0
). Adjustable between
0.5 and 99.99
KySt
HYSt
erisis
CONTROL HYSTERESIS
: Is the hysteresis for
ON/OFF control (set in temperature units). This
parameter is only used when the controller is in
ON/OFF mode (
Pb
=
0
).
A1SP
A2SP
Al
arm
SP
SETPOINT for Alarm 1 and 2
: Tripping point for
alarm 1 and 2.
PROGRAM LEVEL
Ptol
Program
Tolerance
Maximum admitted deviation of PV with respect to SP. If
exceeded, the program execution is suspended (the
internal timer freezes) until the deviation be returns back
within the defined tolerance.
The value 0 (zero) disables the function.
Psp0
Psp9
Program
SP
Program SP’s, 0 to 9: Group of 10 values of SP that
define the Ramp and Soak profile segments.
Pt1
Pt9
Program Time
Time intervals of the program segments. It defines the
duration
in minutes
, of each of the 9 program
segments. Configurable between 0 and 9999 minutes.
Pe1
Pe9
Program
event
Program Segment Alarm (Event Alarm). Parameters
that define the alarm must be activated during the
execution of a certain program segment:
OFF
Do not activate alarm in this segment.
A1
Activate alarm 1 when program reaches this
segment.
A2
Activate alarm 2 when program reaches this
segment.
A1A2
Activate alarms 1 and 2 when program
reaches this segment.
The alarms chosen must have its function configured
as “
rS
”.
rPt.P
Repeat Program
It determines the number of times the program must be
REPEATED, besides the initial execution. Configurable
between
0
and
9999
times. After the last execution, all
controller outputs are turned off (
RvN
=
OFF
).
INPUT LEVEL
Type
tYPE
INPUT TYPE
: Selects the input signal type to be
connected to the process variable input. Refer to
Table 1
for the available options.
This must be the first parameter to be configured.
Dp.po
Decimal Point
DECIMAL POINT
. Defines the decimal point position.
Vnit
unit
UNIT
: Defines the indication unit in Celsius or
Fahrenheit
(
Degrees Celsius (
°C
);
F
Degrees Fahrenheit (
°F
);
A(t
ACt
ion
CONTROL ACTION
:
re
Reverse action
. Generally used for
heating.
Dir
Direct action
. Generally used for
cooling.
Ovt.a
Ovt.b
Ovt.d
OUTA, OUTB, OUTC and OUTD function:
Off
Output not used
(tr
Output defined as control output
AL1
Output defined as alarm output 1
AL2
Output defined as alarm output 2
(.0.20
Output defined as control output 0-20
mA (only for OUTD)
(.4.20
Output defined as control output 4-20
mA (only for OUTD)
f.fnc
F Key Function
: It allows to define a function for the F
key. Functions available are:
Off
– Not used / No function assigned;
RvN
– Commands control and alarm outputs (function of
the
RvN
parameter);
kprg
– Interrupts the execution of the ramp and soak
program;
epr
– Triggers the execution of the ramp and soak
program;
spll
SP
L
ow
L
imit
SETPOINT LOW LIMIT:
Selects
minimum
adjustment for parameters relative to the SP (
SP
,
A1SP
,
A2SP
).
spKl
SP
H
igh
L
imit
SETPOINT HIGH LIMIT:
Selects
maximum
adjustment for parameters relative to the SP (
SP
,
A1SP
,
A2Sp
).
0ffs
OFFS
et
OFFSET
FOR PV
: Parameter that allows to add a
value to PV to generate an indication displacement.
A
1fv
A2fv
A
larm
Fu
nction
ALARM FUNCTION 1 AND 2
: See
Table 4
for
description of functions and code to be programmed
in these screens.