Novus N2020 Instruction Manual Download Page 5

N2020 Controller  

NOVUS AUTOMATION 

5/7 

PROGRAMS CYCLE 

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’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 program 

segments

. Defines the time of duration, 

in minutes

of each 9 program segments. Configurable between 0 

and 9999 minutes. 

Pe1

 

Pe9 

Program event

  - 

Program Segment Alarm

Parameters that define which alarms are to be 

activated during the execution of a certain program 

segment:

 

 

  OFF

   Do not start the alarm in this segment. 

 

 

A1

   Start alarm 1 when the program reaches 

 

   this  segment. 

 

 

A2

   Start alarm 2 when the program reaches 

 

   this  segment. 

 

  A1A2

   Start alarm 1 and 2 when the program  

 

   reaches this  segment. 

The alarms chosen must have its function configured 

as “

rS

”. 

rPt.P 

Repeat Program

 - Determines the number of times 

which one program must be REPEATED besides the 

first execution. Configurable between 

0

  and 

9999

 

times. After the last execution, all controller outputs 

are turned off ((RUN=OFF). 

ALARMS CYCLE 

Fva1 
Fva2  

Function Alarm

. Defines the functions for the alarms 

among the options of the 

Table 02

Sp.a1

  

Sp.a2

 

Alarm SP

: Value that defines the alarms actuation 

point. For alarms programmed with functions of 

Differential

 type, these parameters define deviations. 

bla1 
bla2 

Blocking Alarm

YES

   Enables initial blocking.   

NO  

Inhibits initial blocking. 

xya1 
xya2 

Alarm Hysteresis

. Defines the difference between the 

value of PV at which the alarm is triggered and the 

value at which it is turned off (in engineering units). 

Flsh 

Flash

. Allows visual signalization of an alarm 

occurrence by flashing the indication of PV in the 

operation level. 

YES

  Enables the alarm signalization blinking PV. 

NO   

Disable the alarm signalization blinking PV. 

INPUT CYCLE 

Type 

Input Type

. Selects the input signal type to be 

connected to the process variable input. Refer to 

Table 01

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. 

Dp.po 

Decimal Point

. Determines the presentation of the 

decimal point. 

vn

i

 t 

Unit

. Defines the temperature unit to be used: 

(

   

Indication in Celsius.  

 

f

   

Indication in Fahrenheit. 

0ffs 

Offset

. Parameter that allows the user to correct the 

PV value indicated. 

Spll 

SP Low Limit

. Defines the SP lower limit. To 0-50 

mV input type sets the lower range for SP and PV 

indication. 

Spxl 

SP High Limit

. Defines the SP upper limit. 

1e.ov 

Percentage value to be applied to the output when a 

failure in the sensor connected to the controller input 

occurs. 

Lbd.t 

Time interval for the LBD function. Defines the 

maximum interval of time for the PV to react to a 

control command. In minutes. 

f.en 

F Enable

. Enables the utilization of F key to execute 

the RUN function. 

YES

  Enables F key to execute the RUN function. 

NO 

  Disables it. 

m.en 

M Enable

. Enables the utilization of   key to change 

the control mode to Automatic or Manual. 

YES

 

 key enabled. 

NO 

 

 key disable. 

CALIBRATION CYCLE 
All types of input are calibrated in the factory. If a new 

calibration is required, it should be performed by a skilled 

professional. If this cycle is accessed accidentally, do not 

change its parameters. 

pass 

Password

.

  This parameter is presented before the 

protected cycles. See item Protection of Configuration. 

(alib 

Calibration

.  It enables the calibration possibility of 

the controller. When are disabled, the related 

parameters calibration are hidden. 

inL( 

Input Low Calibration

.  Enter the value 

corresponding to the low scale signal applied to the 

analog input. 

ink( 

Input High Calibration

.  Enter the value 

corresponding to the full scale signal applied to the 

analog input. 

0vL( 

Output Low Calibration

. Analog output calibration. 

Introduction of lower value present in the analog 

output. 

0vk( 

Output High Calibration

. Analogic output 

calibration. Introduction of higher value present in the 

analog output. 

rstr 

Restore

. Restores the factory calibration for all inputs 

and outputs, disregarding modifications carried out by 

the user. 

(j 

Cold Junction

.  Temperature of controller cold 

junction. 

Pas.( 

Password Change

. Allows defining a new access 

password, always different from zero. 

Prot 

Protection

. Sets up the Level of Protection. See 

Table 03

 
 
 

Summary of Contents for N2020

Page 1: ...r instrumentation It is strongly recommended to apply RC S FILTERS noise suppressor to contactor coils solenoids etc FEATURES INPUT TYPE SELECTION The input type to be used by the controller is defined in the equipment settings Table 01 shows the input options available for the user one of them must be selected during the controller setting TYPE CODE RANGE OF MEASUREMENT Thermocouple J Tc j Range ...

Page 2: ... control and also with the PID control with the automatic tuning resource ALARM OUTPUT The controller has two alarms which may be directed for any of the output channels These alarms can be configured to operate the different functions described on Table 02 off Alarms turned off lo Alarm of Absolute Minimum Value Triggers when the value of measured PV is below the value defined for alarm Setpoint ...

Page 3: ...This feature is disabed if the parameter is set to 0 zero PROGRAMS OF RAMP AND SOAK The controller allows the creation of one ramps and temperature soaks program This program is created from the values definition of SP and time intervals defining up to nine 9 program segments The figure below shows a program model with 9 segments Fig 04 Example of ramps and soaks program The program created is sto...

Page 4: ...e the MV value may be changed by the user To differ this screen from SP screen the MV value blinks constantly E pr Enable Program Selects the ramp and soak profile program to be executed no the program is not executed yes the program is executed With enabled outputs RvN YES the program starts right after the program is selected rvn RUN Function Enables control outputs and alarms YES Outputs enable...

Page 5: ... 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 Dp po Decimal Point Determines the presentation of the decimal point vni t Unit Defines the temperature unit to be used Indication in Celsius f Indication in Fahrenheit 0ffs Offset Parameter that allows the use...

Page 6: ...roller serial number is displayed by pressing for 5 seconds DETERMINATION OF PID PARAMETERS Automatic tuning allows the controller to obtain P I D parameters proportional band full rate derivative time During the process of determining automatically the PID parameters the system is controlled in ON OFF in the programmed Setpoint The auto tuning process may take several minutes to be completed depe...

Page 7: ...ture sensor 15 minutes minimum time for terminal accommodations shall be observed SAFETY INFORMATION Any control system design should take into account that any part of the system has the potential to fail This product is not a protection or safety device and its alarms are not intended to protect against product failures Independent safety devices should be always provided if personnel or propert...

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