Novus N1020 User manual

NOVUS AUTOMATION 1/8
N10
20 Temperature Controller
INSTRUCTION
S MANUAL – V1.1x D
INTRODUCTION
The N1020 is a small and yet powerful temperature controller. It
accepts most of the temperature sensors used in industry and its 2
outputs can be configured independently as control or alarm output.
It also embeds an auto-adaptative PID control algorithm for best
system performance.
The configuration can be performed directly on the controller or through
the USB interface. The NConfig software (free) is the configuration
management tool. Connected to the USB of a Windows computer, the
controller is recognized as a serial communications port (COM) running
with a Modbus RTU protocol.
Through the USB interface, even if disconnected from the power
supply, the configuration performed in a piece of equipment can be can
be saved in a file and repeated in other pieces of equipment that
require the same configuration.
It is important that the users read carefully this manual before using
the controller. Verify if the release of this manual matches the
instrument version (the firmware version is shown when the controller
is energized). The N1020 main characteristics are:
•LED Display, red, high brightness;
•Multi-sensor universal input: : thermocouples, Pt100 and 50 mV;
•Self-tuning PID parameters;
•2 outputs: 1 relay and 1 logical pulse for SSR;
•Output functions: Control, Alarm1 and Alarm 2;
•8 distinct alarm functions;
•Programmable timer;
•Function key for enabling/disabling outputs, resetting the timer or
turning the timer ON/OFF;
•Programmable soft-start;
•Rate function;
•Password for parameters protection;
•Capability of restoring factory calibration.
USB INTERFACE
The USB interface is used for CONFIGURING or MONITORING the
controller. The NConfig software must be used for the configuration.
It makes it possible to create, view, save and open configurations
from the equipment or files in your computer. The tool for saving and
opening configurations in files makes it possible to transfer
configurations between pieces of equipment and to make backup
copies. For specific models, the NConfig software also makes it
possible to update the firmware (internal software) of the controller
through the USB.
For MONITORING purposes you can use any supervisory software
(SCADA) or laboratory software that supports the MODBUS RTU
communication on a serial communications port. When connected to
the USB of a computer, the controller is recognized as a conventional
serial port (COM x). Use the NConfig software or consult the
DEVICE MANAGER in the Windows CONTROL PANEL to identify
the COM port that was assigned to the controller. Consult the
mapping of the MODBUS memory in the controller’s communications
manual and the documentation of your supervisory software to
conduct the MONITORING process.
Follow the procedure below to use the USB communication of the
equipment:
1. Download the NConfig software from our website and install it on
your computer. The USB drivers necessary for operating the
communication will be installed together with the software.
2. Connect the USB cable between the equipment and the
computer. The controller does not have to be connected to a
power supply. The USB will provide enough power to operate the
communication (other equipment functions cannot operate).
3. Open the NConfig software, configure the communication and
start recognition of the device.
The USB interface IS NOT SEPARATE from the
signal input (PV) or the controller’s digital inputs and
outputs. It is intended for temporary use during
CONFIGURATION and MONITORING periods. For
the safety of people and equipment, it must only be
used when the piece of equipment is completely
disconnected from the input/output signals. Using the
USB in any other type of connection is possible but
requires a careful analysis by the person responsible
for installing it. When MONITORING for long periods
of time and with connected inputs and outputs, we
recommend using the RS485 interface, which is
available or optional in most of our products.
INSTALLATION / CONNECTIONS
The controller must be fastened on a panel, following the sequence
of steps described below:
•Prepare a panel cut-out 23 x 46 mm;
•Remove the mounting clamps from the controller;
•Insert the controller into the panel cut-out;
•Slide the mounting clamp from the rear to a firm grip at the panel.
RECOMMENDATIONS FOR THE INSTALLATION
•All electrical connections are made to the screw terminals at the
rear of the controller. They accept wire sizes from 0.5 to 1.5 mm2
(16 to 22 AWG). The terminals should be tightened to a torque of
0.4 Nm (3.5 lb in).
•To minimize the pick-up of electrical noise, the low voltage DC
connections and the sensor input wiring should be routed away
from high-current power conductors. If this is impractical, use
shielded cables. In general, keep cable lengths to a minimum.
•All electronic instruments must be powered by a clean mains
supply, proper for instrumentation.
•It is strongly recommended to apply RC'S FILTERS (noise
suppressor) to contactor coils, solenoids, etc.
•In any application it is essential to consider what can happen when
any part of the system fails. The controller features by themselves
can’t assure total protection.

N1020 Temperature Controller
NOVUS AUTOMATION 2/8
ELECTRICAL CONNECTIONS
The controller complete set of features is drawn in Fig. 01. The
features loaded in a particular unit are shown on its label:
Fig. 01 - Connectionsof the back panel
FEATURES
INPUT TYPE SELECTION
Select the input type (in parameter “
tYPE
”) from Table 01 below.
TYPE CODE RANGE OF MEASUREMENT
J
Tc j
Range: -110 to950 ºC (-166 to 1742 ºF)
K
Tc k
Range: -150 to1370 ºC (-238 to2498 ºF)
T
Tc t
Range: -160 to400 ºC (-256 to 752 ºF)
N
Tc n
Range: -270 to1300 ºC (-454 to2372 ºF)
R
Tc r
Range: -50 to 1760 ºC (-58 to 3200 ºF)
S
Tc s
Range: -50 to 1760 ºC (-58 to 3200 ºF)
B
Tc b
Range:400 to 1800 ºC(752 to3272 ºF)
E
Tc e
Range: -90 to 730 ºC (-130 to 1346 ºF)
Pt100
Pt
Range: -200 to850 ºC (-328 to 1562 ºF)
0 to 50 mV
L0.50
Linear. Programmable indication -1999 to 9999
Table 01 - Input Types
OUTPUTS
The N1020 offers two output channels, user configurable as Control
output, Alarm 1 output or Alarm 2 output.
OUT1 - Logical pulse,5Vdc / 25 mA, available at terminals 4 and 5.
OUT2 - Relay SPST-NA, 1.5 A / 240 Vac, available at terminals 6
and 7.
Note: The outputs can be configured independently from each other,
for example, both can be control outputs at the same time.
CONTROL OUTPUT
The control strategy can be configured as ON / OFF or PID.
ALARM OUTPUT
There two alarms available in the N1020. The alarms can be
assigned to either output, logical or relay. The alarm functions are
described below.
ALARM FUNCTIONS
The alarms can be configured to operate with nine different functions,
as shown in 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
(SPA1 orSPA2).
SPA1
PV
ki
Alarm of Valor Absolute Maximum Value. Triggers when the
value of measured PV is above the value defined for alarm
Setpoint.
SPA1
PV
dif
Alarm of Differential Value. In this function the parameters
SPA1
and
SPA2
represent the deviation of PV in relation to
the SP of CONTROL.
SP
PV
SP + SPA1
SP – SPA1
SP
PV
SV – SPA1
SV + SPA1
SPA1 positive SPA1 negative
difl
Alarm of Minimum Differential Value. It triggers when the value
of PV is below the defined point by (using the Alarm 1 as
example):
SP
PV
SP – SPA1
SP
PV
SP –SPA1
SPA1 positive SPA1 negative
difk
Alarm of Valor Maximum Differential Value. Triggers when the
value of PV is above the defined point by (using Alarm 1 as
example):
SP
PV
SP + SPA1
SP
PV
SP + SPA1
SPA1 positive SPA1 negative
t.0n
Timer ON alarm. Sets alarm output ON when timer is runing.
t.end
Timer end. Configures the alarm to actuate when the timer
expires.
ierr
Sensor Break Alarm.
Activated when the input signal of PV is
interrupted, out of the range or when Pt100 in short-circuit.
Table 02 – Alarm functions
Alarms Timer Modes (Temporization)
The controller alarms can be configured to perform 4 timer modes:
MODE
A1t1
a2t1
A1t2
A2t2
ACTION
Normal
Operation 0 0
Alarm Event
Alarm
Output
Activation for
a defined time
1 to 6500 s
0
Alarm Event
Alarm
Output
T1
Activation with
delay 0 1 to 6500 s
Alarm Event
Alarm
Output
T2
Intermittent
Activation 1 to 6500 s
1 to 6500 s
Alarm Event
Alarm
Output
T1
T2
T1
Table 03 - TemporizationFunctionsfor the Alarms
The signs associated to the alarms will light when the alarm condition
is recognized, not following the actual state of the output, which may
be temporarily OFF because of the temporization.
Initial Blocking of Alarm
The initial blocking option inhibits the alarm from being recognized if
an alarm condition is present when the controller is first energized (or
after a transition from run YES NO). The alarm will be enabled
only after the occurrence of a non alarm condition followed by a new
occurrence for the alarm.

N1020 Temperature Controller
NOVUS AUTOMATION 3/8
The initial blocking is useful, for instance, when one of the alarms is
configured as a minimum value alarm, causing the activation of the
alarm soon upon the process start-up, an occurrence that may be
undesirable.
The initial blocking is disabled for the sensor break alarm function.
RAMP AND SOAK FUNCTION
Allows reaching the SP value gradually. The value of SP is increased
gradually from an initial value (PV value) until it reaches the set
value. The
rate
parameter sets this increase for SP in degrees per
minute.
The Ramp function will work when turn on the controller, enable
control (RUN = YES) or when the SP value is changed. A value
equal to zero (0) in the rate parameter disables the Ramp function.
TIMER FUNCTION
The N1020 embeds a timer function (decreasing) for applications that
require particular process duration.
Once defined the time interval in the
T1me
parameter, the timer will
START when:
•When PV reaches the temperature programmed in the SP
parameter.
•When enabling the control (RUN = YES).
•By pressing the Fkey when configured to Timer reset mode (the
timer is reloaded with the
T1me
parameter and restarts counting).
•By pressing the Fkey in ON/OFF mode stops the timer counting;
pressing it again, resumes the counting.
When the timer expires, the two possible actions can be:
•Disables de control (RUN→NO) or
•Activate the alarm.
FUNCTIONS FOR THE F KEY
The Fkey on the frontal keypad is meant for special commands, as
follows:
•Enable outputs (identically to the RUN parameter).
•Timer reset: - reloads the timer and initiates a new time counting.
•Timer ON/OFF. Timer holds or resumes counting each time the
Fkey is pressed.
Keeping the Fkey pressed for 3 seconds resets the timer
(reloads the timer to the value set in
T1me
), initiating a new time
counting.
Note: when the Fkey is configured as RUN = YES/NO (RUN =
f.key
), the controller outputs are born disabled after powers up.
SOFT-START
The Soft-start function is generally used in processes that require
slow start-up, where the instantaneous application of 100% of the
available power to the load may cause damages to parts of the
system.
In order to disable this function, the soft-start parameter must be
configured with 0 (zero).
OFFSET
Allows fine trimming the PV indication to compensate for sensor
errors. Default value: zero.
SERIAL COMMUNICATION
For full documentation download the Registers Table N1020 for
Serial Communication on our web site – www.novusautomation.com.
Fig. 02 – SerialCommunicationsConections
OPERATION
The controller’s front panel, with its parts, can be seen in the Fig. 03:
Fig. 03 - Identification of the parts referring to the frontpanel
Display: Displays the current value of PV. When configuring a
parameter, the display alternates between the parameter prompt and
its value (the parameter value is shown with a light blinking to
differentiate it from the parameter prompt).
The display contains also the signs AT, OUT, RUN ALM and COM:
AT Indicator: Stays ON while the controller is in tuning process.
OUT Indicator: For relay or pulse control output; it reflects the
actual state of the output.
RUN Indicator: Indicates that the controller is active, with the
control output and alarms enabled. (RUN=YES).
ALM Indicator: Signalize the occurrence of alarm condition. It
lights when either alarm is active.
COM Indicator: Flashes when there is RS485 activity.
P Key: Used to walk through the menu parameters.
Increment key and
Decrement key:allow altering the
values of the parameters.
F Key: accesses special functions: RUN (toggles YES/NO) and the
two modes of timer control.
STARTUP
When the controller is powered up, it displays its firmware version for
3 seconds, after which the controller starts normal operation. The
value of PV is then displayed and the outputs are enabled.
In order for the controller to operate properly in a process, its
parameters need to be configured first, such that it can perform
accordingly to the system requirements. The user must be aware of
the importance of each parameter and for each one determine a valid
condition.
The parameters are grouped in levels according to their functionality
and operation easiness. The 5 levels of parameters are:
1 – Operation Level
2 – Tuning Level
3 – Alarms Level
4 – Configuration Level
5 – Calibration Level
The Pkey is used for accessing the parameters within a level.
Keeping the Pkey pressed, at every 2 seconds the controller jumps
to the next level of parameters, showing the first parameter of each
level:
PV >>
atvn
>>
fva1
>>
type
>>
pass
>> PV …
To enter a particular level, simply release the Pkey when the first
parameter in that level is displayed.
To walk through the parameters in a level, press the Pkey with short
strokes.

N1020 Temperature Controller
NOVUS AUTOMATION 4/8
The display alternates the presentation of the parameter prompt and
its value. The parameter value is displayed with a light blinking to
differentiate it from the parameter prompt.
Depending on the level of parameter protection adopted, the
parameter PASS precedes the first parameter in the level where the
protection becomes active. See section CONFIGURATION
PROTECTION.
At the end of this manual, a table with the complete sequence of
levels and parameters is presented.
DESCRIPTION OF THE PARAMETERS
OPERATION LEVEL
PV PV indication
Timer Timer remaining time.
Only shown when the Timer
function isin use.(
T1me
≠0) (HH:MM).
SP
Control SP adjustment.
T1me
Sets the Timer, 00:00 to 99:59 (HH:MM).
Rate
RATE OF PV RISE: from the current PV to the SP value.
In degrees/minute.
rvn
Enablescontroloutputsand alarms.
YES
- Outputsenabled.
NO
- Outputs disabled.
f.key
-“F
” key assumes control over the RUN
command.
TUNING LEVEL
Atvn
Auto-tune Defines the control strategy to be taken:
off
– Turned off. (no PID tuning)
Fast
– Fast
automatictuning.
Full
–More accurate automatic tuning.
self
– Precise + auto - adaptative tuning
rslf
–Forcesone new precise automatic precise +
auto - adaptative tuning.
TGht
- Forcesone new precise automatic +auto -
adaptative tuning when Run = YESor
controller isturned on.
Refer to the “DETERMINING PID PARAMETERS”
section forfurtherdetailson tuning strategies.
pb
Proportional
Band
Proportional Band -
Value of the term P
of the control
mode PID, in percentage of the maximum span of the
input type. Adjust of between 0and 500.0%.
Select zero for ON/OFF control.
ir
Integral Rate Integral Rate - Value of the term Iof the PID algorithm, in
repetitions per minute (Reset). Adjustable between 0 and
99.99.
Displayed only if proportional band ≠0.
dt
Derivative Time Derivative Time – Value of the term Dof the control mode
PID, in seconds. Adjustablebetween0 an 300.0 seconds.
Displayed only if proportional band ≠0.
(t
Level Time
Pulse Width Modulation (PWM) period in seconds.
Adjustable between 0.5 and 100.0 seconds.
Displayed only if proportional band ≠0.
kyst
Hysteresis Control Hysteresis (in engineering. units): This parameter
is only shown for ON / OFF control (Pb=0). Adjustable
between0and the measurementinput type span.
A(t
Action
Control Action: For Auto Mode only.
re
Control with Reverse Action. Appropriate heating.
Turnscontroloutputon when PV isbelow SP.
dir
Control with Direct Action. Appropriate for
cooling.
Turns control output on when PV is
above SP.
sfst
Softstart SoftStart Function –: Time in seconds during which the
controller limits the MV value progressively from 0 to 100
%. It is enabled at powerup or when the control output is
activated. If in doubt set zero (zero value disables the
Soft start function).
0ut1
0ut2
Outputs 1 and2 function:
Off
not used;
(trl
control output.
A1
Alarm 1.
A2
Alarm 2.
A1a2
Alarm 1 AND Alarm 2at the same time.
ALARMS LEVEL
Fva1
Fva2
Function Alarm
Functions of Alarms. Defines the functions for the alarms
among the optionsof the Table 02.
Sp.a1
Sp.a2
Alarm Setpoint: Tripping points for alarms 1 and 2. Value
that defines the point of activation for the programmed
alarmswith the functions
Lo
or
ki
.
For the alarms configured with Differential type
functions, this parameterdefines deviation (band).
Not used for the other alarm functions.
bla1
bla2
Blocking Alarm
Block Alarm 1 and 2: This function blocks the alarms
when the controller isenergized.
YES
- enables initial blocking
NO
- inhibits initial blocking
xya1
xya2
Hysteresis of Alarm
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.
A1t1
A2t1
Alarm Time t1
Defines the temporization time
t1,
for the alarms.
In seconds.
A1t2
A2t2
Alarm Time t2
Defines the temporization time t2, for the alarms.
In seconds.
flsh
Allows you to identify the occurrence of alarm conditions
by flashing the PV indication on the display screen.
YES
- Enablesalarm signaling flashingPV
NO - Disables alarm signaling flashingPV
CONFIGURATION LEVEL
Type
Type Input Type: Selectsthe input signal type to be connected
to the process variable input. Refer to Table 1 for the
available options.
fltr
Filter 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
Selects the decimal point position to be viewed in both
PV and SP.
vnit
Unit
Unit. Temperature indication in °C or °F. Not shown for
linear inputs.
0ffs
Offset Sensor Offset
: Offset value to be added to the PV
reading to compensate sensor error.
Default value: zero.
Spll
SP Low Limit Defines the SP lower limit.
To 0-50 mV inputtype sets
the lower range for SP and PV
indication.
Spxl
SP High Limit
Defines the SPupperlimit.
To 0-
50 mV input type sets the upper range for SP and PV
indication.
T1me
Timer
Time. Adjustment. 00:00 to 99:59 (HH:MM).
(same function as the one presented in the operation
level)

N1020 Temperature Controller
NOVUS AUTOMATION 5/8
Tm.en
Timer Enable
Shows a copyof the Timerparameter in the operating
level.
En
- enables
T1me
parameterto the operating
level
Dis
- doesn’t show the
T1me
parameter in the
operating level
T.str
Timer Start
Defines themode for starting the Timer.
sP
- when PV reach the temperature value in SP
rvn
- when RUN →YES
f.rst
- “F” key (reset timer)
f.stp
- “F” key (start/stop the timer).
T.e.(.0
Timer End Control
Off
Control behavior when the timer expires:
YES
- disables the outputs(RUN = NO).
NO
- outputs continue to operate.
Rate
Ramp function. Establishes the rate of increase of PV, in
degrees/minute.
Same
Rate
functionas showed in the operating level.
rT.en
Rate Enable
Shows a copy of the Rate
parameter in the operating
level.
En
- enables the
Rate
parameter to the
operating level.
Dis
- doesn’t show the
Rate
parameter in the
operating level
rvn
Enables the control and alarm outputs.
YES
- outputsenabled.
NO
- outputsdisabled.
f.key
- outputs enabled/disabled function assigned
to the Fkey.
Same
rvn
function as showed in the operating level.
rv.en
Run Enable
Showsa copyof the
rvn
parameterin the operating level.
En
- enablesthe
rvn
parameterin the operating
level
Dis
- doesn’t show the
rvn
parameter in the
operating level
bavd
Baud Rate Baud Rate da comunicação serial. Em kbps
1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6 e 115.2
prty
Parity Paridade da comunicação serial.
none
Sem paridade
Ewem
Paridade par
0dd
Paridade impar
Addr
Address Endereço de Comunicação. Número que identifica
o controlador na rede de comunicação serial, entre
1 e 247.
CALIBRATION LEVEL
All of the input and output types are calibrated in the factory. If a
recalibration is required, this should be carried out by a
experienced personnel. If this level is accidentally accessed, pass
through all the parameters without pressing the
or keys
pass
Password
Input of the Access Password.
This parameter is presented before the protected levels.
See item Protection of Configuration.
(alib
Calibration?
Enables or disables instrument calibration by the user,
YES: shows calibration parameters
No: Hides the calibration parameters
inL(
Input Low
Calibration
See section MAINTENANCE / Input Calibration.
Enter the value corresponding to the low scale signal
applied to the analog input.
Only showed if (alib
= YES
ink(
Input High
Calibration
See section MAINTENANCE / Input Calibration.
Enter the value corresponding to the full scale signal
applied to the analog input.
Only showed if
(alib
= YES
rstr
Restore
Restores the factory calibration for all inputs and outputs,
disregarding modifications carried outby the user.
ovll
Output Low Limit
Lower limit for the control output - Minimum percentage
value assumed by the control output when in automatic
mode and in PID. Typically configured with 0 %. Default
value: 0 %
ovkl
Output High Limit
Upper limit for the control output - Maximum percentage for
the control output when in automatic mode and in PID.
Typicallyconfiguredwith100 %. Defaultvalue:100 %.
(j
Cold Junction
Cold junction temperature controller.
Pas.(
Password
Change
Allows defining a new access password, always different
from zero.
Prot
Protection
Sets up the Level ofProtection. See Table 04.
Freq
Frequency
Mains frequency. This parameter is important for proper
noise filtering.
snk
Shows the four first digits of the controller serial number.
snL
Shows the four last digits of the controllerserial number.
CONFIGURATION PROTECTION
The controller provides means for protecting the parameters
configurations, not allowing modifications to the parameters values,
avoiding tampering or improper manipulation. The parameter
Protection (
PROt
), in the Calibration level, determines the
protection strategy, limiting the access to particular levels, as shown
by the Table 04.
Protection
Level Protection Levels
1 Only the Calibration level is protected.
2 Calibration andTuning levels.
3 Calibration, Tuning and Alarms levels
4 Calibration,Tuning, Alarms andConfiguration levels
5 Calibration, Tuning, Alarms, Configurationlevels
Table 04 – Levels of Protection for the Configuration
ACCESS PASSWORD
The protected levels, when accessed, request the user to provide the
Access Password for granting permission to change the
configuration of the parameters on these levels.
The prompt
PASS
precedes the parameters on the protected levels.
If no password is entered, the parameters of the protected levels can
only be visualized.
The Access Password is defined by the user in the parameter
Password Change (
PAS.(
), present in the Calibration Level. The
factory default for the password code is 1111.
PROTECTION ACCESS PASSWORD
The protection system built into the controller blocks for 10 minutes
the access to protected parameters after 5 consecutive frustrated
attempts of guessing the correct password.
MASTER PASSWORD
The Master Password is intended for allowing the user to define a
new password in the event of it being forgotten. The Master
Password doesn’t grant access to all parameters, only to the
Password Change parameter (
PAS(
). After defining the new
password, the protected parameters may be accessed (and
modified) using this new password.
The master password is made up by the last three digits of the serial
number of the controller added to the number 9000.
As an example, for the equipment with serial number 07154321, the
master password is 9 3 2 1.

N1020 Temperature Controller
NOVUS AUTOMATION 6/8
DETERMINATION OF PID PARAMETERS
The determination (or tuning) of the PID control parameters in the
controller can be carried out in an automatic way and auto-adaptative
mode. The automatic tuning is always initiated under request of the
operator, while the auto-adaptive tuning is initiated by the controller
itself whenever the control performance becomes poor.
Automatic Tuning: In the beginning of the automatic tuning the
controller has the same behavior of an ON/OFF controller, applying
minimum and maximum performance to the process. Along the
tuning process the controller's performance is refined until its
conclusion, already under optimized PID control. It begins
immediately after the selection of the options FAST, FULL, RSLF or
TGHT, defined by the operator in the parameter ATUN.
Auto-adaptative Tuning: Is initiated by the controller whenever the
control performance is worse than the one found after the previous
tuning. In order to activate the performance supervision and auto-
adaptative tuning, the parameter ATUN must be adjusted for SELF,
RSLF or TGHT. The controller's behavior during the auto-adaptative
tuning will depend on the worsening of the present performance. If
the maladjustment is small, the tuning is practically imperceptible for
the user. If the maladjustment is big, the auto-adaptive tuning is
similar to the method of automatic tuning, applying minimum and
maximum performance to the process in ON/OFF control.
Fig. 04 – Example of auto tuning
Fig. 05 – Exampleof auto-adaptative tuning
The operator main select through the ATUN parameter, the desired
tuning type among the following options:
•
OFF
: The controller does not carry through automatic tuning or
auto-adaptative tuning. The PID parameters will not be
automatically determined nor optimized by the controller.
•
FAST
: The controller will the process automatic tuning one
single time, returning to the OFF mode after finishing. The tuning
in this mode is completed in less time, but not as precise as in
the FULL mode.
•
FULL
: The same as the FAST mode, but the tuning is more
precise and slower, resulting in better performance of the P.I.D.
•
SELF
: The performance of the process is monitored and the
auto-adaptative tuning is automatically initiated by the
controller whenever the performance poorer.
After a tuning level, the controller starts collecting data from the
process for determining the performance benchmark that will
allow evaluate the need for future tunings. This phase is
proportional to the process response time and is signaled by the
flashing TUNE indication on the display. It is recommended not
to turn the controller off neither change the SP during this
learning period.
It is recommended not to turn the controller off neither change the
SP during this learning period.
•
rSLF
: Accomplishes the automatic tuning and returns into the
SELF mode. Typically used to force an immediate automatic
tuning of a controller that was operating in the SELF mode,
returning to this mode at the end.
•
TGHT
: Similar to the SELF mode, but in addition auto-adaptative
tuning, it also executes the automatic tuning whenever the
controller is set in RUN=YES or when the controller is turned on.
Whenever the parameter ATUN is altered by the operator into a
value different from OFF, an automatic tuning is immediately
initiated by the controller (if the controller is not in RUN=YES, the
tuning will begin when it passes into this condition). The
accomplishment of this automatic tuning is essential for the correct
operation of the auto-adaptative tuning.
The methods of automatic tuning and auto-adaptative tuning are
appropriate for most of the industrial processes. However, there may
be processes or even specific situations where the methods are not
capable to determine the controller's parameters in a satisfactory
way, resulting in undesired oscillations or even taking the process to
extreme conditions. The oscillations themselves imposed by the
tuning methods may be intolerable for certain processes.
These possible undesirable effects must be considered before
beginning the controller's use, and preventive measures must be
adopted in order to assure the integrity of the process and users.
The AT signaling device will stay on during the tuning process.
In the case of PWM or pulse output, the quality of tuning will also
depend on the level time adjusted previously by the user.
If the tuning does not result in a satisfactory control, refer to Table 05
for guidelines on how to correct the behavior of the process.
PARAMETER VERIFIED PROBLEM SOLUTION
ProportionalBand
Slow answer
Decrease
Greatoscillation Increase
Rate of Integration
Slow answer
Increase
Greatoscillation Decrease
Derivative Time
Slow answer or instability
Decrease
Greatoscillation
Increase
Table 05 - Guidance for manual adjustment of the PID parameters
MAINTENANCE
PROBLEMS WITH THE CONTROLLER
Connection errors and inadequate programming are the most
common errors found during the controller operation. A final revision
may avoid loss of time and damages.
The controller displays some messages to help the user identify
problems.
MESSAGE
DESCRIPTION OF THE PROBLEM
----
Open input. No sensoro signal.
Err1
Err6
Connectionand/or configuration errors. Check the wiring
and the configuration.
Other error messages may indicate hardware problems requiring
maintenance service.

N1020 Temperature Controller
NOVUS AUTOMATION 7/8
CALIBRATION OF THE INPUT
All inputs are factory calibrated and recalibration should only be done
by qualified personnel. If you are not familiar with these procedures
do not attempt to calibrate this instrument.
The calibration steps are:
a) Configure the input type to be calibrated.
b) Enter in Calibration Level.
c) At the input terminals, apply a signal corresponding to a value
slightly above the lower input limit.
d) Access the parameter
inLC
. Using the and keys, adjust
the display reading such as to match the applied signal, then
press the key
e) At the input terminals, apply a signal corresponding to a value
slightly below the upper input limit.
f) Access the parameter
inkC
. Using the and keys, adjust
the display reading such as to match the applied signal, then press
the key.
g) Return to the Operation level and check the calibration result.
Note: When checking the controller calibration with a Pt100
simulator, pay attention to the simulator minimum excitation current.
requirement, which may not be compatible with the 0.170 mA
excitation current provided by the controller.
N1020 PARAMETER TABLE
OPERATING LEVEL TUNING LEVEL ALARMS LEVEL CONFIGURATION LEVEL CALIBRATION LEVEL
PV
atvn
Fv.a1
Type
Pass
( * )
Timer
pb
Fv.a2
fltr
(alib
SP
ir
Sp.a1
Dp.po
In.L(
T1me
dt
Sp.a2
vnI t
In.k(
Rate
(t
Bl.a1
0ffs
rstr
RUN
- YES
- NO
- F Key
kyst
Bl.a2
Sp.ll
ovll
ACt
Xy.a1
Sp.xl
ovkl
sfst
Xy.a2
T1me
(j
OUT1 (pulse)
- Control
- AL1
- AL2
A1.t1
Tm.en
(Enables the timer in the
operating level)
Pas.(
OUT2 (relay 1)
- Control
- AL1
- AL2
A2.t1
T.str
(startsTimer in operating level)
- SP
- RUN
- Fkey (reset)
- Fkey (on/off)
Prot
OUT3 (relay 2)
- Control
- AL1
- AL2
A2.t2
T.e.(.0
YES Disables the outputs
(RUN=NO)
NO – Doesn’t disable outputs
Freq
flsh
Rate
Snk
Most significantdigits of the
instrument serial number
rt.en
(showsthe
Rate
parameter in
the operating level)
Snl
Least significant digits of the
instrument serial number
RUN
- YES
- NO
- Fkey
rv.en
(showsthe
Rvn
parameter in
the operating level)
bavd
prty
Addr
( * ) The
PASS
prompt precedes the parameters on the protected levels.
P
P

NOVUS AUTOMATION 8/8
SPECIFICATIONS
DIMENSIONS:........................................25 x 48 x 105 mm (1/16 DIN)
Approximate Weight:..............................................................75 g
PANEL CUTOUT:.....................................23 x 46 mm (+0.5 -0.0 mm)
POWER SUPPLY:.....................100 to 240 Vac/dc (±10 %), 50/60 Hz
Optional 24 V:.....................12 to 24 Vdc / 24 Vac (-10 % / +20 %)
Maximum consumption:......................................................... 9 VA
CONDITIONS ENVIRONMENTAL:
Operation Temperature:............................................... 0 to 50 °C
Relative Humidity:.........................................................80 % max.
INPUT..............................T/C, Pt100 an voltage (according Table 01)
Input Resolution:.......................................32767 levels (15 bits)
Resolution of Display:......12000 levels (from -1999 up to 9999)
Rate of input reading:..................................up to 55 per second
Precision: ..Thermocouples J, K, T,E: 0.25 % of the span ±1 ºC
...................Thermocouples N, R, S, B: 0.25 % of the span ±3 ºC
...............................................................Pt100: 0.2 % of the span
.......................................................................................mV: 0.1 %
Input Impedance:................Pt100 and thermocouples: > 10 MΩ
Measurement of Pt100: .......................3-wire type, (α=0.00385)
With compensation for cable length, excitation current of 0.170 mA
OUTPUT
OUT1:..................................................Voltage pulse; 5 V / 25 mA
OUT2:................................Relay SPST, 1.5 A / 240 Vac / 30 Vdc
FRONT PANEL:..................................IP65, Polycarbonate (PC)UL94 V-2
ENCLOSURE:.......................................................IP30, ABS+PC UL94 V-0
ELECTROMAGNETIC COMPATIBILITY:...............EN 61326-1:1997
and EN 61326-1/A1:1998
EMISSION:............................................................CISPR11/EN55011
IMMUNITY:......................EN61000-4-2, EN61000-4-3, EN61000-4-4,
EN61000-4-5, EN61000-4-6, EN61000-4-8 and EN61000-4-11
SAFETY: ..........................EN61010-1:1993 and EN61010-1/A2:1995
(UL file E300526)
USB INTERFACE 2.0, CDC CLASS (VIRTUAL COMMUNICATIONS
PORT), MODBUS RTU PROTOCOL.
SPECIFIC CONNECTIONS FOR TYPE FORK TERMINALS;
PROGRAMMABLE LEVEL OF PWM DE 0.5 UP 100 SECONDS;
STARTS UP OPERATION AFTER 3 SECONDS CONNECTED TO
THE POWER SUPPLY;
CERTIFICATION: and
IDENTIFICATION
N1020
- A
- B
- C
A: Output:
PR: OUT1= Pulse / OUT2= Relay
B: Digital Communication:
485: Interface communication RS485
C: Power Supply:
Nothing shown (100~240 Vac) / 48~240 Vdc; 50~60 Hz
24V: 12~24 Vdc / 24 Vac
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 property are at risk.
Product performance and specifications may be affected by its
environment and installation. It’s user’s responsibility to assure
proper grounding, shielding, cable routing and electrical noise
filtering, in accordance with local regulations, EMC standards and
good installation practices.
SUPPORT AND MAINTENANCE
This product contains no serviceable parts inside. Contact our local
distributor in case you need authorized service. For troubleshooting,
visit our FAQ at www.novusautomation.com.
LIMITED WARRANTY AND LIMITATION OF
LIABILITY
NOVUS warrants to the original purchaser that this product is free
from defects in material and workmanship under normal use and
service within one (1) year from the date of shipment from factory or
from its official sales channel to the original purchaser.
NOVUS liability under this warranty shall not in any case exceed the
cost of correcting defects in the product or of supplying replacement
product as herein provided and upon the expiration of the warranty
period all such liability shall terminate.
For complete information on warranty and liability limitations, check
appropriate section in our web site:
www.novusautomation.com/warranty.