Controller N2000
NOVUS AUTOMATION
7/11
Xyst
Hysteresis
Control Hysteresis: This parameter is only shown for
ON / OFF control.
Displayed only if proportional band = 0.
Act
Action
Control Action:
rE
-Reverse Action usually used for heating.
Dir
-Direct Action usually used for cooling.
bias
Bias function - Allows adding a percentage value
between -100 % and +100 %. to the MV control
output.
The value 0 (zero) disables the function.
Ovll
Output Low
Limit
Minimum percentage value for MV (Manipulated
Variable) when in automatic control and PID. Default
value: 0.0 %
Ovxl
Output High
Limit
Maximum percentage value for MV when in
automatic control and PID. Default value: 100.0%
Sfst
Softstart
SoftStart Function – Time in seconds during which
the controller limits the MV value progressively from
0 to 100 %. It is enabled at power up or when the
control output is activated. If in doubt set zero (zero
value disables the Soft start function).
Sp.a1
Sp.a2
Sp.a3
Sp.a4
Alarm SP: Value that defines the point of activation
for the programmed alarms with the functions “
Lo
” or
“
ki
”.
For the alarms configured with Differential type
functions, this parameter defines deviation (band).
Not used for the other alarm functions.
RAMP AND SOAK PROFILE PROGRAMMING CYCLE
Tbas
Program time
base
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
Program to be Viewed: Selects the ramp and soak
profile program to be edited/viewed in the following
cycle prompts (7 programs available).
Ptol
Program
Tolerance
Ramp and Soak Tolerance: maximum deviation
between PV and SV. Whenever this deviation is
exceeded the time counter is halted until deviation
lowers to within the tolerance. Set zero to disable this
function.
Psp0
Psp7
Program SP
Ramp and Soak Set Points: (0 to 7): Set of 8 SV
values which define the ramp and soak profile
segments.
Pt1
Pt7
Program
Time
Ramp and Soak Segments: (1 to 7): Set of 7 time
intervals in minutes for the 7 segments of the ramp
and soak program.
Pe1
Pe7
Program
event
Ramp and Soak Event: (1 to 7): Set of 7 values that
define which alarms must be activated during a ramp
and soak program segment. Alarm function depends
on “
rS
” setting (Table 3).
Lp
Link Program
Link Program: number of the next profile program to
be linked following the current program.
0 -do not link to any other program.
1 a 7 -number of the program to be linked to.
ALARM CYCLE
Fva1
Fva2
Fva3
Fva4
Function
Alarm
Functions of Alarms. Defines the functions for the
alarms among the options of the Table 3.
oFF, iErr, rS, Lo, xi, DiFL, DiFx, DiF
bla1
bla2
bla3
bla4
Blocking
Alarm
This function blocks the alarm at power-up when the
units is first energized.
YES -enables.
NO -Inhibits this blocking function.
xya1
xya2
xya3
xya4
Histeresis of
Alarm
Defines the differential range between the PV value
at which the alarm is turned on and the value at
which it is turned off. (In engineering units).
A1t1
A2t1
A3t1
A4t1
Alarm Time t1
Defines the temporization time t1, for the alarms. In
seconds.
The value 0 (zero) disables the function.
A1t2
A2t2
A3t2
A4t2
Alarm Time t2
Defines the temporization time t2 for the alarms time
functions. In seconds.
The value 0 (zero) disables the function.
flsK
Display flashes in alarm.
Allows visual signalization of an alarm occurrence by
flashing the indication of PV in the operation level. The user
chooses which alarms are to be associated with this
feature.
CONFIGURATION CYCLE
Type
Type
Input Type: Selects the input signal type to be
connected to the process variable input. Refer to
Table 1.
This is the first parameter to be set.
fltr
Digital Input Filter. Used to improve the stability of
the measured signal (PV). Adjustable between 0 and
20. In 0 (zero) it means filter turned off and 20 means
maximum filter. The higher the filter value, the slower
is the response of the measured value.
Dppo
Decimal Point
Defines the decimal point position.
VnIt
Unit
Defines the indication unit in Celsius “°
(
“ or
Fahrenheit “°
f
“
This parameter is presented whenever a temperature
sensor is configured as input.
Offs
Offset
Sensor Offset: Offset value to be added to the PV
reading to compensate sensor error.
Default value: zero.
Spll
Setpoint Low
Limit
Defines the SP lower limit of.
For the linear analog input types available (0-20 mA,
4-20 mA, 0-50 mV and 0-5 V), defines the minimum
PV indication range, besides limiting the SP
adjustment.
Defines lower limit for range retransmission PV and
SP.
