N1200HC Controller
NOVUS AUTOMATION
7/12
Pb1
(
P
roportional
b
and 1) – PROPORTIONAL for
control output 1: Value of the term
P
of the control
mode PID, in percentage of the maximum span of
the input type.
Select zero for ON/OFF control.
ir
(
I
ntegral
r
ate) - INTEGRAL RATE for control output
1: Value of the term
I
of the PID algorithm, in
repetitions per minute. Displayed only if proportional
band
≠
0.
dt
(
d
erivative
t
ime) - DERIVATIVE TIME for control
output 1: Value of the term
D
of the control mode
PID, in seconds. Displayed only if proportional
band
≠
0.
Kst1
(
HySt
eresis) - CONTROL HYSTERESIS 1:
Hysteresis value for control 1 in ON / OFF control
mode (
Pb1
=0).
[t1
C
ycle
t
ime) - CYCLE TIME PWM: Value in
seconds of the period of the PWM output.
Displayed only if proportional band
≠
0.
A[t
(Act
ion) - CONTROL ACTION 1: For Auto Mode only:
Reverse
action (“
rE
“)usually used for heating;
Direct
action (“
dir
“) generally used for cooling..
For control output 2, the action taken will always
be the opposite of that defined for the control 1.
bias
Bias – Allows to change the percentage value of
control output (MV), adding a value between -
100% and +100%.
The value 0 (zero) disables the function.
O1ll
(
o
utput
1
L
ow
L
imit) - LOWER LIMIT FOR
CONTROL OUTPUT 1: Minimum percentage
value for control output 1 when in automatic and
PID mode. Usually equal to
0.0
.
O1kl
(
o
utput
1
H
igh
L
imit) - UPPER LIMIT FOR
CONTROL OUTPUT 1: Maximum percentage
value for manipulated variable (MV) when in
automatic and PID mode. Usually equal to
100.0
.
Pb2
(
P
roportional
b
and) - PROPORTIONAL BAND to
control output 2: Value of the term
P
for control 2,
as a percentage of the maximum range of the input
type
. If settled to zero, control 2 will be ON /
OFF and hysteresis control must be set in the
"
oLAP
" screen.
Kst2
(
HySt
eresis) - HYSTERESIS FOR CONTROL 2:
Value of hysteresis in control 2 in ON / OFF control
mode (
Pb2
=0).
[t2
(
C
ycle
t
ime) - CYCLE TIME PWM for control
output 2: Value in seconds of the period of the
PWM output. Displayed if proportional band 2
≠
0.
O2ll
(
ou
tput
L
ow
L
imit) - LOWER LIMIT FOR
CONTROL OUTPUT 2: Minimum percentage
value for control output 2 when in automatic mode.
Usually equal to
0.0
.
O2kl
(
ou
tput
H
igh
L
imit) – UPPER LIMIT FOR
CONTROL OUTPUT 2: Maximum percentage
value for manipulated variable (MV) when in
automatic mode. Usually equal to
100.0
.
Kst2
(
HySt
eresis) - HYSTERESIS FOR CONTROL 2:
Value of hysteresis in control 2 in ON / OFF control
mode (
Pb2
=0).
Olap
(
o
ver
LAP
) - OVERLAP: Overlap between heating
and cooling in the same unit of the input type. If set a
negative value, the "overlap" shall be treated as
"dead-band" (dead zone).
Lbd.t
Loop break detection time
- Time interval of the
LBD function. Maximum time interval for the
response of PV to commands from the control
output in minutes.
sfst
SOFT-START
: Time in seconds, during which the
controller limits the value of control output 1
progressively from 0 to 100%. Starts when the
controller is turned on or when the control is
enabled. Operates only in PID control mode.
Sp.a1
sp.a2
sp.a3
sp.a4
(
S
et
P
oint of
A
larm) - ALARM SP: Defines the set
point alarms programmed to "Lo" or "Hi". For
alarms programmed with the Differential function
this parameter defines the deviation. See item 5.3.
For other alarm functions this parameter is not used.
PROGRAMS PARAMETERS LEVEL
Pr.tb
Program time base - Defines the time base that will
be used by all Ramp & Soak programs.
Se(
- Time basis in seconds;
Min
- Time basis in minutes;
Pr n
Program number - Selects the ramp and soak profile
program to be edited/viewed. The sequence of
parameters that follows refer to this selected
program. Total of 20 programs possible.
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 - Segments durations, 1 to 9: Defines
the time of duration, in second or minutes, of the
segments of the program being edited.
Pe1
Pe9
Program event - Alarms of Event, 1 to 9:
Parameters that define which alarms are to be
activated during the execution of a certain program
segment. The alarms chosen must have its function
configured as “
rS
”.
Lp
Link Program - At the end of the execution of this
program, any other program can have its execution
begins immediately.
0
- do not link to any other program.
ALARMS PARAMETERS LEVEL
Fva1
Fva2
Fva3
Fva4
Function Alarm. Defines the functions for the
alarms among the options of the
Table 3
.
oFF, iErr, rS, Lo, xi, DiF, DiFL, DiFx,
bla1
bla2
bla3
bla4
Blocking Alarm. Initial blocking function for
alarms 1 to 4.
YES
Enables initial blocking
NO
Inhibits initial blocking
xya1
xya2
xya3
xya4
Hysteresis of Alarm. Defines the difference
between the value of PV at which the alarm is
triggered and the value at which it is turned off.
A hysteresis value for each alarm.
A1t1
A2t1
A3t1
A4t1
Alarm Time
t1
- Defines the temporization time
t1
,
in seconds, for the alarms. In seconds.
The value 0 (zero) disables the function.