NOVUS N1020 Micro PID Temperature Controller Instruction Manual
- June 9, 2024
- Novus
Table of Contents
N1020 Micro PID Temperature Controller
N1020 Temperature Controller
INSTRUCTIONS MANUAL V1.2x B
INTRODUCTION
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-adaptive PID
control algorithm for best system performance. Configuration can be performed
either directly on the controller or via the USB interface once QuickTune
software has been installed on the computer to be used. Once connected to USB,
the device will be recognized as a serial communication (COM) port operating
with 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 to CONFIGURE, MONITOR, or UPDATE the controller
FIRMWARE. The user should use QuickTune software, which offers features to
create, view, save and open settings from the device or files on the computer.
The tool for saving and opening configurations in files allows the user to
transfer settings between devices and perform backup copies. For specific
models, QuickTune allows to update the firmware (internal software) of the
controller via the USB interface. For MONITORING purposes, the user can use
any supervisory software (SCADA) or laboratory software that supports the
MODBUS RTU communication over a serial communication port. When connected to a
computer’s USB, the controller is recognized as a conventional serial port
(COM x). The user must use QuickTune software or consult the DEVICE MANAGER on
the Windows Control Panel to identify the COM port assigned to the controller.
NOVUS AUTOMATION
The user should consult the mapping of the MODBUS memory in the controller
communication manual and the documentation of the supervision software to
start the MONITORING process. Follow the procedure below to use the USB
communication of the device: 1. Download QuickTune software from our website
and install it on
the computer. The USB drivers necessary for operating the communication will
be installed with the software. 2. Connect the USB cable between the device
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
device functions may not operate). 3. Run the QuickTune software, configure
the communication and start the device recognition.
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, according to Specifications. ·
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.
INSTALLATION RECOMMENDATIONS
· 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.
1/9
ELECTRICAL CONNECTIONS
The controller complete set of features is drawn in Figure 1. The features
loaded in a particular unit are shown on its label:
Figure 1 Connections of the back panel REMOVAL OF THE CONTROLLER BACK CONNECTOR
Figure 2 Back connector removal
FEATURES
INPUT TYPE SELECTION
The input type to be used by the controller is defined in the equipment
configuration. Table 1 shows the available options. To use any input type, no
intervention in the controller hardware is required.
TYPE CODE
MEASUREMENT RANGE
J
Tc j Range: -110 to 950 °C (-166 to 1742 °F)
K
Tc k Range: -150 to 1370 °C (-238 to 2498 °F)
T
Tc t Range: -160 to 400 °C (-256 to 752 °F)
N
Tc n Range: -270 to 1300 °C (-454 to 2372 °F)
R
Tc r Range: -50 to 1760 °C (-58 to 3200 °F)
S
Tc s Range: -50 to 1760 °C (-58 to 3200 °F)
B
Tc b Range: 400 to 1800 °C (752 to 3272 °F)
E
Tc e Range: -90 to 730 °C (-130 to 1346 °F)
Pt100
Pt Range: -200 to 850 °C (-328 to 1562 °F)
0 to 50 mV L0.50
Linear. Programmable indication -1999 to 9999
Table 1 Input types
OUTPUTS
N1020 has two output channels, user configurable as Control output, Alarm 1 output, or Alarm 2 output.
OUT1 Logical pulse, 5 Vdc / 25 mA. Available at terminals 4 and 5.
OUT2 Relay SPST-NO, 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.
NOVUS AUTOMATION
N1020 Temperature Controller
CONTROL OUTPUT The control strategy can be configured as ON/OFF or PID.
ALARM OUTPUT
N1020 has two alarms. 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 2.
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 or SPA2).
PV
SPA1
ki Alarm of valor absolute maximum value. Triggers when the value of measured
PV is above the value defined for alarm Setpoint.
PV
SPA1
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.
PV
PV
difl
SP SPA1 SP SP + SPA1
SV + SPA1 SP SV SPA1
SPA1 positive
SPA1 negative
Alarm of minimum differential value. It triggers when the value of PV is below the defined point by (using the Alarm 1 as example):
PV
PV
difk
SP SPA1
SP
SP SP SPA1
SPA1 positive
SPA1 negative
Alarm of valor maximum differential value. Triggers when the value of PV is above the defined point by (using Alarm 1 as example):
SP SP + SPA1
PV
PV
SP + SPA1 SP
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 2 Alarm functions
The above examples also apply to Alarm 2.
Important note: Alarms configured with the ki, dif, and difk functions also
trigger their associated output when a sensor fault is identified and signaled
by the controller. A relay output, for example, configured to act as a High
Alarm (ki), will operate when the SPAL value is exceeded and also when the
sensor connected to the controller input is broken.
2/9
Alarms Timer Modes (Temporization) The controller alarms can be configured to perform 4 timer modes:
MODE
Normal Operation
A1t1 a2t1
0
A1t2 A2t2
0
ACTION
Alarm Output
Alarm Event
Activation for a defined time
1 to 6500 s
0
Alarm
Output
T1
Alarm Event
Activation with delay
Alarm
0
1 to
Output
T2
6500 s
Alarm Event
Intermittent
1 to
Alarm
1 to
Output
T1
T2
T1
Activation 6500 s 6500 s
Alarm Event
Table 3 Temporization functions for 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.
Alarm Initial Blocking
The initial blocking option inhibits the alarm from being recognized if an
alarm condition is present when the controller is first energized. The alarm
will be enabled only after the occurrence of a non alarm condition followed by
a new occurrence for the alarm.
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 (RvN =
YES) or when the SP value is changed. A value equal to zero (0) in the rate
parameter disables the Ramp function.
TIMER FUNCTION
N1020 embeds a timer function (decreasing) for applications that require
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 (RVN = YES). · By pressing the F key when
configured to Timer reset mode (the
timer is reloaded with the T1me parameter and restarts counting). · By
pressing the F key 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 (RvN = no) or · Activate the alarm.
FUNCTIONS FOR THE F KEY
The F key 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.
N1020 Temperature Controller
· Timer ON/OFF. Timer holds or resumes counting each time the F key is
pressed. Keeping the F key pressed for 3 seconds resets the timer (reloads the
timer to the value set in T1me), initiating a new time counting.
Note: When the F key is configured to operate as Enable Outputs (RvN = f.key),
the controller will always return from a power failure with the outputs
DISABLED.
SOFT START
Feature that limits the MV value, preventing maximum power from being applied
instantaneously to the process load. A time interval defines the maximum rate
of increase of the power delivered to the load, where 100 % power will only be
reached at the end of this interval. The amount of power delivered to the load
is still determined by the controller. The Soft Start function simply limits
the rate of increase of this power value over the user-defined time interval.
The Soft Start function is typically used in processes that require slow
starts, where instantaneous application of 100 % of the available power to the
load can damage parts of the process. To disable this function, the respective
parameter must be set to 0 (zero).
OFFSET
Feature that allows you to make a small adjustment to the PV indication,
seeking to correct measurement errors that appear, for example, when replacing
temperature sensors.
SERIAL COMMUNICATION
For complete information, see the Register Table for Serial Communication,
available for download on the N1020 page on the website:
www.novusautomation.com.
Figure 3 Serial communications connections
The table below helps you connect the RS485 communication interface
connectors:
D1 D D + B Bidirectional data line.
D0 D – A Inverted bidirectional data line.
C
Optional connection that improves the
GND
performance of the communication.
Table 4 RS485 serial communication
NOVUS AUTOMATION
3/9
OPERATION
The front panel can be seen in Figure 4:
Figure 4 Identification of the parts referring to the front panel
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 also contains 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. (RvN = 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 and the two
modes of timer control.
START-UP
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 P key is used for accessing the parameters within a level. Keeping the P
key 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 P key when the first parameter
in that level is displayed. To walk through the parameters in a level, press
the P key with short strokes. 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.
NOVUS AUTOMATION
N1020 Temperature Controller
Note: It is recommended to disable/suspend the control (rvn = NO) whenever it is necessary to change the device settings.
PARAMETER DESCRIPTION
OPERATION LEVEL
PV Timer
SP T1me Rate
rvn
PV indication.
Timer remaining time. Only shown when the Timer function is in use. (T1me 0)
(HH:MM). Control SP adjustment.
Sets the Timer. 00:00 to 99:59 (HH:MM).
Ramp function. From the current PV to the SP value. In degrees/minute.
Enables control outputs and alarms.
YES Outputs enabled. NO Outputs disabled.
f.key F key assumes control over the RUN command.
TUNING LEVEL
Atvn Defines the control strategy to be taken:
Auto-tune
off Turned off. (no PID tuning)
Fast Fast automatic tuning.
Full More accurate automatic tuning.
Self Precise + auto-adaptive tuning
Rslf Forces one new precise automatic precise + auto-adaptive tuning.
TGht Forces one new precise automatic + autoadaptive tuning when Rvn = YES or controller is turned on.
See DEFINITION OF PID PARAMETERS chapter.
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 0 and 500.0 %.
Select zero for ON/OFF control.
ir Integral Rate. Value of the term I of the PID Integral Rate algorithm, in
repetitions per minute (Reset).
Adjustable between 0 and 99.99.
Displayed only if proportional band 0.
dt Derivative Time. Value of the term D of the control Derivative Time mode
PID, in seconds. Adjustable between 0 and
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 between 0 and the measurement input type span.
A(t Control Action: For Auto Mode only.
Action
re Control with Reverse Action. Appropriate
for heating. Turns control output on when
PV is below SP.
dir Control with Direct Action. Appropriate for cooling. Turns control output on when PV is above SP.
4/9
sfst
Soft Start
0ut1 0ut2
Soft Start 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).
Outputs 1 and 2 function:
Off Not used.
(trl Control output.
A1 Alarm 1.
A2 Alarm 2.
A1a2 Alarm 1 AND Alarm 2 at the same time.
ALARMS LEVEL
Fva1 Alarm functions. Fva2 Defines the functions for the alarms among the Function Alarm options of the Table 2.
Sp.a1 Sp.a2
Alarm Setpoint: Tripping points for alarms 1 and 2. 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.
bla1 Block Alarm 1 and 2: This function blocks the alarms bla2 when the
controller is energized. Blocking Alarm YES Enables initial blocking.
NO Inhibits initial blocking.
xya1 Alarm Hysteresis. Defines the difference between xya2 the value of PV at which the alarm is triggered and Alarm Hysteresis the value at which it is turned off.
A1t1 Defines the temporization time t1 for alarms. In A2t1 seconds.
Alarm Time t1
A1t2 A2t2
Alarm Time t2
flsh
Defines the temporization time t2 for alarms. In seconds.
Allows you to identify the occurrence of alarm conditions by flashing the PV
indication on the display screen.
YES Enables alarm signaling by flashing PV.
NO Disables alarm signaling by flashing PV.
CONFIGURATION 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.
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 Selects the decimal point position to be viewed in Decimal Point both PV and SP.
vni t Unit. Temperature indication in °C or °F. Not shown
Unit
for linear inputs.
N1020 Temperature Controller
0ffs
Offset
Sensor Offset.
Offset value to be added to the PV reading to compensate sensor error.
Default value: Zero.
Spll Defines the SP lower limit.
SP Low Limit To 0-50 mV input type sets the lower range for SP and PV
indication.
Spxl Defines the SP upper limit.
SP High Limit 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)
Tm.en Shows a copy of the Timer parameter in the Timer Enable Operation Level.
En Enables T1me parameter to the Operation Level.
Dis Doesn’t show the T1me parameter in the Operation Level.
T.str
Timer Start
Defines the mode for starting the Timer.
sP When PV reach the temperature value in SP.
rvn When RVN YES.
f.rst F key (reset timer).
f.stp F key (start/stop the timer).
T.e.(.0 Control behavior when the timer expires:
Timer End Control Off
YES Disables the outputs (RVN = NO).
NO Outputs continue to operate.
Rate
Ramp function. Establishes the rate of increase of PV, in degrees/minute.
Same Rate function as showed in the operating level.
rT.en Shows a copy of the Rate parameter in the Operation Rate Enable Level.
En Enables the Rate parameter to the operating level.
Dis Doesn’t show the Rate parameter in the operating level.
rvn
rn.en
Run Enable
Enables the control and alarm outputs.
YES Outputs enabled. NO Outputs disabled.
f.key Outputs enabled/disabled function assigned to the F key.
Same rvn function as showed in the Operation Level.
Shows a copy of the rvn parameter in the Operation Level.
En Enables the rvn parameter in the Operation Level.
Dis Doesn’t show the rvn parameter in the Operation Level.
bavd
Baud Rate
Baud Rate serial communication. In kbps, with the following speeds available:
1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6, and 115.2
NOVUS AUTOMATION
5/9
prty
Parity
Addr
Address
Parity of the serial communication.
none Without parity.
Ewem Eve parity. 0dd Odd parity.
Communication address. Identifies the controller in the network. The possible
address numbers are from 1 to 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 CONFIGURATION PROTECTION chapter.
(alib Enables or disables instrument calibration by the Calibration user.
inL(
Input Low Calibration
Enter the value corresponding to the low scale signal applied to the analog
input.
See MAINTENANCE chapter.
ink(
Input High Calibration
Enter the value corresponding to the full-scale signal applied to the analog
input.
See MAINTENANCE chapter.
rstr
Restore
Restores the factory calibration for all inputs and outputs, disregarding modifications carried out by the user.
ovll Lower limit for the control output. Output Low Limit Minimum percentage
value assumed by the control
output when in automatic mode and in PID. Typically configured with 0 %.
Default value: 0 %
ovkl Upper limit for the control output. Output High Limit Maximum percentage
for the control output when in
automatic mode and in PID. Typically configured with 100 %.
Default value: 100 %.
(j Cold junction temperature controller.
Cold Junction
Pas.(
Password Change
Allows defining a new access password, always different from zero.
Prot Sets up the Level of Protection. See Table 5.
Protection
Freq Mains frequency. This parameter is important for Frequency proper noise filtering.
snk Shows the four first digits of the controller serial number.
snL Shows the four last digits of the controller serial 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 certain levels, as shown in Table
5:
NOVUS AUTOMATION
N1020 Temperature Controller
PROTECTION LEVEL
PROTECTION LEVELS
1
Only the Calibration level is protected.
2
Calibration and Tuning levels are protected.
3
Calibration, Tuning and Alarms levels are
protected.
4
Calibration, Tuning, Alarms, and Configuration
levels are protected.
5
All levels are protected.
Table 5 Protection levels for 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.
DEFINTION 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-adaptive 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 ATvN.
AUTO-ADAPTIVE TUNING
Is initiated by the controller whenever the control performance is worse than
the one found after the previous tuning. To activate the performance
supervision and Auto-Adaptive Tuning, the parameter ATvN must be adjusted for
SELF, RSLF or TGHT. The controller’s behavior during the Auto-Adaptive 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 like
6/9
the method of Automatic Tuning, applying minimum and maximum performance to
the process in ON/OFF control.
Figure 5 Example of automatic tuning
Figure 6 Example of auto-adaptive 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-Adaptive 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 PID. · SELF: The
performance of the process is monitored, and the Auto-Adaptive 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: Like the SELF mode, but in addition
Auto-Adaptive Tuning, it also executes the Automatic Tuning whenever the
controller is set in RVN = 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 RVN = 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-adaptive tuning. The methods of Automatic Tuning
and Auto-Adaptive 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
N1020 Temperature Controller
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 6 for
guidelines on how to correct the behavior of the process.
PARAMETER
VERIFIED PROBLEM SOLUTION
Proportional Band
Slow answer Great oscillation
Decrease Increase
Rate of Integration
Slow answer Great oscillation
Increase Decrease
Derivative Time
Slow answer or instability Great oscillation
Decrease Increase
Table 6 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
PROBLEM DESCRIPTION
—-
Open input. No sensor o signal.
Err1 Err6
Connection and/or configuration errors. Check the wiring and the configuration.
Table 7 Error messages
Other error messages may indicate hardware problems requiring maintenance service.
INPUT CALIBRATION
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 P 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 P 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.
NOVUS AUTOMATION
7/9
N1020 Temperature Controller
N1020 PARAMETER TABLE
OPERATING LEVEL PV indication
Timer indication SP T1me
Rate RvN
TUNING LEVEL atvn pb ir dt (t kyst ACt sfst
0UT1 0UT2
ALARMS LEVEL Fv.a1 Fv.a2 Sp.a1 Sp.a2 Bl.a1 Bl.a2 Xy.a1 Xy.a2 A1.t1 A2.t1 A2.t2 flsh
Table 8 Parameter table (*) The PASS prompt precedes the parameters on the protected levels.
CONFIGURATION LEVEL Type fltr Dp.po vnI t 0ffs Sp.ll Sp.xl T1me Tm.en T.str T.e.(.0 Rate rt.en RvN rn.en bavd prty Addr
CALIBRATION LEVEL Pass ( * ) (alib In.L( In.k( rstr ovll ovkl (j Pas.( Prot Freq Snk Snl
NOVUS AUTOMATION
8/9
SPECIFICATIONS
DIMENSIONS:………………………………….25 x 48 x 105 mm (1/32 DIN) Panel cut-out:
……………………………….23 x 46 mm (+0.5 -0.0 mm) Approximate weight:
……………………………………………………… 75 g
POWER SUPPLY:…………………100 to 240 Vac/dc (±10 %), 50/60 Hz Standard model: …………….
100 to 240 Vac/dc (±10 %), 50/60 Hz 24 V model:………………….. 12 to 24 Vdc / 24 Vac
(-10 % / +20 %) Maximum consumption:………………………………………………… 5 VA
CONDITIONS ENVIRONMENTAL: Operation temperature: ………………………………………… 0 to 50 °C
Relative humidity: ………………………………………………… 80 % max.
INPUT…………………….T/C, Pt100, and voltage (according to Table 1) Input resolution:
…………………………………. 32767 levels (15 bits) Display resolution: ……….. 12000 levels
(from -1999 up to 9999) Rate of input reading:……………………………. up to 55 per second
Accuracy: . Thermocouples J, K, T, E: 0.25 % of the span ±1 °C ………………
Thermocouples N, R, S, B: 0.25 % of the span ±3 °C ………………………………………………………
Pt100: 0.2 % of the span ……………………………………………………………………………mV: 0.1 % Input
impedance: …………….Pt100 and thermocouples: > 10 M Pt100 measurement:……………………..
3-wire type, ( = 0.00385) With compensation for cable length, excitation
current of 0.170 mA. All input types are factory calibrated. Thermocouples
according to NBR 12771/99 standard; Pt100 NBR 13773/97.
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 HOUSING:
……………………………………………………..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), USB CONECTOR: MINI B, 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. CERTIFICATIONS: CE, UKCA, and UL.
IDENTIFICATION
N1020 – A
– B
– C
A: Output: PR: OUT1= Pulse / OUT2= Relay
B: Digital Communication: 485: Interface communication RS485
C: Power Supply: Blank: Standard model =100~240 Vac/dc; 50~60 Hz 24 V: 24 V
model = 12~24 Vdc / 24 Vac; 50~60 Hz
WARRANTY
Warranty conditions are available on our website
www.novusautomation.com/warranty.
NOVUS AUTOMATION
9/9