NOVUS N2000s Controller Universal Process Controller User Guide
- June 9, 2024
- Novus
Table of Contents
N2000s Controller Universal Process Controller
N2000S Controller
UNIVERSAL PROCESS CONTROLLER USER GUIDE V3.0x A
SAFETY SUMMARY
The symbols below are used on the equipment and throughout this document to
draw the user’s attention to important operational and safety information.
PRESENTATION / OPERATION
The controller frontal panel is shown in Figure 1:
CAUTION OR WARNING:
Read complete instructions prior to installation and operation of the unit.
CAUTION OR WARNING: Electrical Shock Hazard
All safety related instructions that appear in the manual must be observed to ensure personal safety and to prevent damage to either the instrument or the system. If the instrument is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
INTRODUCTION
N2000S is a controller for servo positioners with two control relays: one to
open and other to close the valve (or damper). Moreover, it has an analog
output that can be programmed to control or retransmit input or setpoint
signals. Its universal input accepts most industry manufactured sensors and
signals. Configuration can be entirely achieved through the keyboard. No
circuit changes are required. Selection of input and output type, alarms
configuration, and other especial functions are accessed and programmed
through the frontal panel. It is important that you read the manual thoroughly
before using the controller. Be sure the manual corresponds to your instrument
(the number of the software version can be seen when the controller is turned
on).
· Sensors break protection in any condition.
· Universal input for multiple sensors without changing hardware.
· Potentiometer input for current position reading.
· Auto-tuning of PID parameters.
· Relay control outputs.
· Automatic/Manual “bumpless” transfer.
· 2 alarm outputs with the following functions: minimum, maximum, differential
(deviation), open sensor and event.
· 2 alarm timers.
· 4-20 mA or 0-20 mA analog output for Process Variable (PV) or Setpoint (SP)
retransmission.
· 4 function digital input.
· Ramp and soak with 7 concatenable 7-segment programs.
· RS-485 serial communication; RTU MODBUS protocol.
· Configuration protection.
· Dual voltage.
NOVUS AUTOMATION
Figure 1 Identification of the frontal panel parts
PV / Programming Display: Shows the PV (Process Variable) value. When in operating or programming mode, shows the parameter mnemonic.
SP / Parameters Display: Shows the SP (Setpoint) and other programmable parameter values of the controller.
COM Indicator: Flashes when data is exchanged with the external environment.
TUNE Indicator: Lights when the controller runs the automatic tuning operation.
MAN Indicator: Indicates that the controller is in the manual control mode.
RUN Indicator: Indicates that the controller is active and with control and alarm outputs enabled.
OUT Indicator: When the analog output (0-20 mA or 4-20 mA) is configured for control mode, it remains constantly on.
A1, A2 Indicators: Indicates the respective alarm status.
A3 Indicators: Indicates the valve (I/O3) opening output status.
A4 Indicators: Indicates the valve/dumper (I/O4) closing output status.
PROG key: Key used to show the controller programmable parameters.
BACK Key: Keu used to return to the previous parameter shown in the parameter display.
Increase and parameter values.
Decrease keys: Key used to change the
Auto/Man key: Special function key used to switch the control mode between Automatic and Manual.
Programmable Function Key: Key used to perform the special functions described in the Key Functions.
When the controller is turned on, its firmware version is displayed for 3
seconds. After that, the controller starts operating normally. The PV and SV
values are displayed in the upper and lower displays, respectively. Outputs
are enabled at this moment as well.
The relay associated to the valve closing is activated during the time
required for the complete valve to close (see parameter Ser.t) so that the
controller starts operating with a known reference.
1/9
To run smoothly, the controller requires some basic configuration: · Input
type (Thermocouples, Pt100, 4-20 mA, etc.).
· Control setpoint value (SP). · Control output type (relays, 0-20 mA, pulse).
· PID parameters (or hysteretic for ON / OFF control). Other special
functions, including ramp and soak, alarm timer, digital input, etc., can be
used to achieve better performance. The setup parameters are grouped in
cycles, in which each message is a parameter to be defined. The 7 parameter
cycles are:
CYCLE 1 – Operation 2 – Tuning 3 – Programs 4 – Alarms 5 – Input configuration 6 – I/O 7 – Calibration
ACCESS Free
Reserved access
The operation cycle (1st cycle) is freely accessed. The other cycles require a keystroke combination to enable access, as shown below:
Press (BACK) and (PROG) simultaneously
When the required cycle is found, all the parameters within this cycle can be
accessed by pressing the key (or pressing the key to go backwards). To return
to the operation cycle, press many times up to all parameters of the current
cycle have been shown.
All parameters set up are stored in a protected memory. Changed values are
automatically saved when the user goes to the next parameter. The SP value is
saved when parameters are changed or at every 25 seconds.
CONFIGURATION PROTECTION
It is possible to prevent undue changes, so that the parameter values cannot be changed after the final configuration. The parameters are still displayed but can no longer be changed. The protection happens with the combination of a key sequence and an internal key.
The sequence of keys to protect is
and , pressed
simultaneously for 3 seconds in the parameter cycle to protect. To
unprotect a cycle, just press and simultaneously for 3
seconds.
Displays will flash briefly to confirm locking or unlocking operation.
Within the controller, the PROT key completes the locking function. When PROT is OFF, the user can lock and unlock the cycles. When PROT is ON, changes are not allowed. If there are protections for the cycles, they cannot be removed; if they do not exist, they cannot be promoted.
CONTROL OPERATION
The controller is based on the SErt parameter (Servo excursion time). This is
the time the serve requires to open completely when it is in the closed
position. The output percentage calculated by the PID (0 to 100 %) is
transformed into the serve activation time to reach a relative position.
A new output value of the PID is calculated at every 250 ms. The SErF
parameter defines the time in seconds for the calculation and activation of a
new output value. This parameter works as a filter. It makes the output slower
and increases the time intervals.
The minimum resolution for a new position change is given by the parameter
SErr. If the difference between the current output value and the new value
calculated by the PID is lower than the programmed percentage of this
parameter, no activation is performed.
If the calculated output is between 0 % or 100 % and it is maintained for some
time, the opening relay (when in 0 %) or the closing relay (when in 100 %)
will be periodically activated for a time fraction to assure that the real
position is close to the estimated position, for mechanical problems or non-
linearity of the process.
NOVUS AUTOMATION
Controller N2000S
CONFIGURATION / RESOURCES
INPUT TYPE SELECTION
The input type must be selected by the user in the Type parameter and using
the keyboard (see input types in Table 1).
TYPE CODE
FEATURES
J
0 Range: -50 to 760 °C (-58 to 1400 °F)
K
1 Range: -90 to 1370 °C (-130 to 2498 °F)
T
2 Range: -100 to 400 °C (-148 to 752 °F)
N
3 Range: -90 to 1300 °C (-130 to 2372 °F)
R
4 Range: 0 to 1760 °C (32 to 3200 °F)
S
5 Range: 0 to 1760 °C (32 to 3200 °F)
Pt100
6 Range: -199.9 to 530.0 °C (-199.9 to 986.0 °F)
Pt100
7 Range: -200 to 530 °C (-328 to 986 °F)
4-20 mA 8 J Linearization. Programmable range: -110 to 760 °C
4-20 mA 9 K Linearization Programmable range: -150 to 1370 °C
4-20 mA 10 T Linearization. Programmable range: -160 to 400 °C
4-20 mA 11 N Linearization Programmable range: -90 to 1370 °C
4-20 mA 12 R Linearization Programmable range: 0 to 1760 °C
4-20 mA 13 S Linearization Programmable range: 0 to 1760 °C
4-20 mA 14 Pt100 Linearization. Prog. range: -200.0 to 530.0 °C
4-20 mA 15 Pt100 Linearization. Prog. range: -200 to 530 °C
0 5 0 mV 16 Linear. Programmable indication from 1999 to 9999.
4-20 mA 17 Linear. Programmable indication from 1999 to 9999.
0 5 Vdc 18 Linear. Programmable indication from 1999 to 9999.
4-20 mA 19 Input square root extraction.
Table 1 Input types
Note: All available input types are factory calibrated.
I/O CHANNELS CONFIGURATION
The controller input/output channels can undertake multiple functions: Control
output, digital input, digital output, alarm output, PV, and SP
retransmission. These channels are identified as I/O 1, I/O2, I/O 3, I/O 4,
I/O 5, and I/O 6.
The function code of each I/O can be selected among the following options.
Only valid function codes are displayed for each I/O.
I/O 1 and I/O2 Used as ALARM outputs
2 SPDT relays are available in terminals 7 to 12. They can be assigned codes
0, 1 or 2. Where:
0 Disables the alarm. 1 Defines channel as alarm 1. 2 Defines channel as
alarm 2.
I/O 3 and I/O4 Used as CONTROL outputs
2 SPST relays, available in terminals 3 to 6. They are assigned code 5. Where:
5 Defines channel as control output.
I/O 5 Analog output 0-20 mA or 4-20 mA analog channel output used to
retransmit PV and SP values or perform functions of digital input and output.
They can be assigned codes 0 to 16. Where:
0 No function (disabled). 1 Defines the channel as alarm 1. 2 Defines
the channel as alarm 2. 3 Invalid selection. 4 Invalid selection. 5
Invalid selection. 6 Defines the channel to behave as Digital Input and
switch
between Automatic and Manual control mode: Closed = Manual control.
2/9
Open = Automatic control. 7 Defines the channel to act as Digital Input that
turns the
control on and off (RvN: YES / no). Closed = Outputs enabled. Open = Outputs
disabled. 8 Invalid selection. 9 Defines the channel to control the
programs operation. Closed = Enables the program execution. Open = Interrupts
the program. Note: When the program is interrupted, the execution is suspended
at the point where it is (the control is still active). The program resumes
normal execution when the signal applied to the digital input allows (contact
closed). 10 Defines the channel to select the program 1 execution. This
option is useful when you want to switch between the main Setpoint and a
second Setpoint defined in the program of ramps and soaks. Closed = Selects
program 1. Open = Assumes the main Setpoint. 11 Configures the analog output
to operate as an analog 0-20 mA control output. 12 Configures the analog
output to operate as an analog 4-20 mA control output. 13 Analog 0-20 mA
retransmission of PV. 14 Analog 4-20 mA retransmission of PV. 15 Analog
0-20 mA retransmission of SP. 16 Analog 4-20 mA retransmission of SP.
I/O 6 Digital Input 0 Disables the alarm. 6 Defines the channel to
behave as Digital Input and switch between Automatic and Manual control mode:
Closed = Manual control. Open = Automatic control. 7 Defines the channel to
act as Digital Input that turns the control on and off (RvN: YES / no). Closed
= Outputs enabled. Open = Control outputs and alarms disabled. 8 Invalid
selection. 9 Defines the channel to control the programs operation. Closed =
Enables the program execution. Open = Interrupts the program. Note: When the
program is interrupted, the execution is suspended at the point where it is
(the control is still active). The program resumes normal execution when the
signal applied to the digital input allows (contact closed). 10 Defines the
channel to select the program 1 execution. This option is useful when you want
to switch between the main Setpoint and a second Setpoint defined in the
program of ramps and soaks. Closed = Selects program 1. Open = Assumes the
main Setpoint. Note: When a function is selected to operate through digital
input, the controller does not respond to the equivalent function command
given in the frontal keypad.
NOVUS AUTOMATION
Controller N2000S
POTENTIOMETER INPUT
The potentiometer of valve position can be seen in the controller. It must be
10 k and connections must be as Fig. 07 shows. The potentiometer reading does
not power the valve position for control effects, it only informs the operator
the valve current position. The control action happens regardless of the
potentiometer.
To visualize the potentiometer reading, the Pot parameter must be enabled.
When enabled (YES), the potentiometer position is displayed on the prompt
screen that shows the Manipulated Variable (MV). When the potentiometer
visualization is selected, the MV is not shown anymore, and the percentage
value of valve opening is shown instead. The MV screen is the second prompt of
the main cycle.
ALARM CONFIGURATION The controller has 2 independent alarms. They can be
programmed to operate with nine different functions, represented in Table 3.
· Open Sensor It is activated whenever the input sensor is broken or
disconnected.
· Event Alarm It activates alarm(s) in specific segments of the program. See
item Alarm Cycle in this manual.
· Resistance Fail It detects a heater broken condition by monitoring the load
current when the control output is activated. This alarm function requires an
optional device (option 3).
· Minimum Value It triggers when the measured value is below the value set by
the alarm Setpoint.
TYPE SCREEN Disabled off
Sensor Break
(input Error)
Event Alarm (ramp and
Soak)
Detection resistance
failure
Low Alarm
ierr rs
rfail lo
ACTION No active alarm. This output can be used as a digital output to be set
by the serial communication. Alarm will be ON if PV sensor breaks, input
signal is out of range or Pt100 is shorted.
Can be activated at a specific segment of ramp and soak program.
Detects a heater broken condition.
PV
High Alarm ki
SPAn PV
Differential difl Low
SPAn PV
SV – SPAn
SV
positive SPAn
PV
SV
SV – SPAn
negative SPAn
Differential difk High
PV
SV
SV + SPAn
positive SPAn
PV
SV + SPAn
SV
negative SPAn
Differential dif
PV
SV – SPAn
SV
SV + SPAn
positive SPAn
PV
SV + SPAn
SV
SV – SPAn
negative SPAn
Table 3 Alarm functions
SPAn refers to SPA and SPA2 alarm Setpoints.
· Maximum Value
It triggers when the measured value is above the value set by the alarm
Setpoint.
· Differential (or Band) In this function, the parameters SPA1 and SPA2
represent the PV deviation as compared to the main SP.
In a positive deviation, the differential alarm will be triggered when the
measured value is out of the range defined in:
(SP Deviation) and (SP + Deviation)
In a negative deviation, the differential alarm will be triggered when the
measured value is within the range defined above.
3/9
· Minimum Differential It is activated when the measured value is below the
value defined in.
(SP Deviation) · Maximum Differential It is activated when the measured
value is above the value defined in:
(SP + Deviation)
ALARM TIMER
Alarms can be programmed to have timer functions. The user can delay alarm
activation, set one pulse per activation, or make the alarm signals operate in
sequential pulses. Alarm timer is available only for alarms 1 and 2 when A1t1,
A1t2, A2t1 and A2t2 parameters are programmed.
Figures shown in Table 4 represent these functions, t 1 and t 2 may vary from
0 to 6500 seconds and their combinations define the timer mode. For normal
operation, with no alarm timer activation, t 1 and t 2 must be assigned 0
(zero).
The LEDs associated to the alarms will flash whenever an alarm condition is
acknowledged, regardless the actual state of the output relay, which may be
temporarily off because of temporization.
ALARM FUNCTION
t1
Normal
0
t2
ACTION
0
Alarm Output
Delayed
Alarm Event
0
1 to 6500 s
Alarm Output
T2
Pulse
1 to 6500 s
0
Alarm Event
Alarm
Output
T1
Alarm Event
Oscillator
1 to 6500 s
1 to 6500 s
Alarm Output
T1
T2
T1
Alarm Event
Table 4 Temporization functions for Alarms 1 and 2
ALARM INITIAL BLOCKING
The Initial Blocking option prevents the alarm from being recognized if an
alarm condition is present when the controller is turned on for the first
time. The alarm could be activated only after the occurrence of a non-alarm
condition followed by a new occurrence of an alarm condition.
The initial blocking is useful, for example, when one of the alarms is
programmed as minimum value alarm, which can trigger the alarm at the system
startup. This is not always required.
The initial blocking is disabled for the Open Sensor function.
PV AND SP ANALOG RETRANSMISSION
The controller has an analog output (I/O 5) that can make a 0-20 mA or 4-20 mA
retransmission proportional to the PV or SP values assigned. The analog
retransmission is scalable, this means it has maximum and minimum limits that
define the output range, which can be defined in parameters SPLL and SPkL.
To obtain voltage retransmission the user must install a shunt resistor (550
max.) in the analog output terminal. The resistor value depends on the voltage
range required.
KEY FUNCTIONS key (special function key) in the frontal panel of the
controller can perform the same function as the Digital Input I/O 6 (except
function 6). The key function is defined by the user in the fFvn parameter: 0
Disables the alarm. 7 Defines the channel to act as Digital Input that
turns the control on and off (RvN: YES / no).
Closed = Outputs enabled. Open = Control output and alarms disabled. 8
Invalid selection.
NOVUS AUTOMATION
Controller N2000S
9 Defines the channel to control the programs operation. Closed = Enables
the program execution. Open = Interrupts the program. Note: When the program
is interrupted, the execution is suspended at the point where it is (the
control is still active). The program resumes normal execution when the signal
applied to the digital input allows (contact closed).
10 Defines the channel to select the program 1 execution. This option is
useful when you want to switch between the main Setpoint and a second Setpoint
defined in the program of ramps and soaks. Closed = Selects program 1. Open =
Assumes the main Setpoint. Note: When a function is selected to operate
through digital input, the controller does not respond to the equivalent
function command given in the frontal keypad.
KEY No function.
INSTALLATION / CONNECTIONS
The controller must be panel-mounted following the steps presented below: ·
Make the panel slot. · Remove fixing brackets. · Insert the controller into
the panel slot. · Replace the clamps in the controller pressing it to reach a
firm
grip at the panel. It is not necessary to disconnect the rear panel terminals
to remove the internal circuit. Figure 2 shows how signals are distributed in
the controller rear panel:
Figure 2 Back panel terminals
INSTALLATION RECOMMENDATIONS · Conductors of input signals must be distant
from activation or
high-tension/current conductors, preferably passing through grounded conduits.
· A specific electrical power supply network should be provided for
instruments use only. · In controlling and monitoring applications, possible
consequences of any system failure must be considered in advance. The internal
relay alarm does not provide total protection. · RC filters (for noise
reduction) in inductor charges (contactors, solenoids, etc.) are recommended.
4/9
POWER SUPPLY CONNECTIONS
Observe the requested supply
voltage
Figure 3 Power supply connections
INPUT CONNECTIONS
It is important that they are very well connected; the sensor wires must be
well fixed in the terminals of the rear panel.
· Thermocouple (T/C) and 50 mV:
Figure 3 shows how connections are made. If extension of the thermocouple is
required, proper compensation cables should be provided.
Figure 3 Thermocouple and Figure 4 – Pt100 wiring with
0-50 mV
three conductors
· RTD (Pt100):
Figure 4 shows the Pt100 wiring for 3 conductors. Terminals 22, 23, and 24
must have the same wire resistance for proper cable length compensation (use
conductors with the same gauge and length). In case the sensor has 4 wires,
one should be left loose near the controller. For 2-wire Pt100, short circuit
terminals 22 and 23.
Figure 5 Connection of 4-20 Figure 6 Connection of 5
mA
Vdc
· 4-20 mA Figure 5 shows the 4-20 mA current signals wiring. · 0-5 Vdc Figure 6 shows the 0-5 Vdc voltage signals wiring. · Alarm and output connection When I/O channels are set up as output channels, they must have their capacity respected, according do specifications.
Figure 7 – Potentiometer connection
Note: It is recommended to disable/suspend the control (rvn = NO)
whenever it is necessary to change the device settings.
CONFIGURATION PARAMETERS
OPERATION CYCLE
PV Indication
(Red)
SV Indication
(Green)
PV AND SP INDICATION: The upper status display shows the current value of PV.
The lower parameter display shows SP value of automatic control mode.
The upper display shows – – – – whenever PV exceeds the maximum range or there
is no signal at the input.
NOVUS AUTOMATION
Controller N2000S
PV Indication
(Red)
MV Indication
(Green)
MANIPULATED VARIABLE VALUE (MV) (control output):
The upper display shows PV value, and the lower display shows the percentage
of MV applied to the control output. When in manual control, the MV value can
be changed. When in auto mode, the MV value is only for visualization.
To distinguish the MV display from the SP display, the MV flashes intermittently.
Pr n
Program number
PROGRAM EXECUTION: Selects the ramp and soak program to be executed.
0 Does not run any program.
1, 2, 3, 4, 5, 6 Respective program.
When the control is enabled, the program selected runs immediately.
In the program cycle of ramp and soak there is a parameter with the same name.
In that context, the parameter is associated with the number of the program
that will run.
rvn
ENABLES CONTROL AND ALARMS OUTPUT: YES Control and alarm enabled. NO Control and alarms disabled.
TUNING CYCLE
atvn
Auto-tune
Auto-tune of PID parameters. See item PID Parameters Auto-Tuning.
YES Run auto-tune.
NO Does not run auto-tune.
Pb
Proportional band
PROPORTIONAL BAND: P term value of the PID control, percentage of maximum
input type span. Adjustable between 0 and 500 %.
If adjusted to zero, control is ON/OFF.
xyst
CONTROL HYSTERESIS: Hysteresis value for ON/OFF control. This parameter is shown only for ON/OFF control
HYSteresis (Pb=0).
Ir`
INTEGRAL RATE: Value of I term of PID control in repetitions per minute (Reset). Adjustable between 0 and
integral rate 24.00. Presented if proportional band 0.
dt
DERIVATIVE TIME: Value of D term of the PID control in seconds. Adjustable between 0 and 250 s. Presented if
derivative time proportional band 0.
sert Time of servo excursion, from totally open to totally closed.
Servo time Programmable from 15 to 600 s.
serr Control resolution. Determines the dead band of servo
Servo activation. Very low values (<1 %) make the servo resolution “nervous”
serF
Servo filter
PID output filter, before use by the servo control. It is the time the PID
mean is made, in seconds. The output is only activated after this time.
Recommended value: > 2 s.
act
Action
CONTROL ACTION: Only in the automatic control mode Reverse action (rE) Usually used for heating. Direct action (rE) Usually used for cooling.
Sp.a1 Sp.a2
SetPoint of Alarm
ALARM SP: Value that defines the trigger point of alarms programmed with the
Lo or Hi functions. In alarms programmed with the function Differential this
parameter defines the deviation.
It is not used in other alarm functions.
PROGRAM CYCLE
tbas
time base
TIME BASE: Selects the time base for the ramp and soak. Valid for all profile
programs.
0 Time base in seconds.
1 Time base in minutes.
Pr n PROGRAM EDITING: Selects the ramp and soak program to
Program be edited in the next screens of this cycle. number
5/9
Ptol
Program tolerance
PROGRAM TOLERANCE: Maximum deviation between PV and SP. Whenever this deviation is exceeded the time counter is halted until deviation lowers to acceptable values. Set zero to disable this function.
Psp0
Psp7
Program SetPoint
PROGRAM SPs, 0 TO 7: Set of 8 SP values that define the ramp and soak program profile.
Pt1 PROGRAM SEGMENTS TIME, 1 to 7: It defines the duration Pt7 time (in
seconds or minutes) of each segment of the
program. Program time
Pe1 Pe7
Program event
Lp
Link to Program
EVENT ALARMS, 1 to 7: Parameters that define which alarms must be triggered
while a program segment is running, according to codes from 0 to 3 presented
in Table 6. Alarm function depends on rS setting.
LINK TO PROGRAM: Number of the next program to be connected. Programs can be
linked to generate profiles of up to 49 segments.
0 Do not connect to any other program. 1 Connect to program 1. 2 Connect
to program 2. 3 Connect to program 3. 4 Connect to program 4. 5 Connect
to program 5. 6 Connect to program 6. 7 Connect to program 7.
ALARM CYCLE
Fva1 Fva2
Function of Alarm
ALARM FUNCTION: Defines the alarm functions according to options shown in
Table 3.
oFF, iErr, rS, rFAil, Lo, xi, DiFL, DiFx, DiF
bla1 bla2
blocking for Alarms
ALARM INITIAL BLOCKING: Alarm initial blocking function for alarms 1 to 4
YES Enables initial blocking.
NO Disables initial blocking.
xya1 ALARMS HYSTEREIS: Defines the differential range xya2 between the PV
value at which the alarm is turned on and
the value at which it is turned off. Hysteresis of
Alarms One hysteresis value is set for each alarm.
A1t1
Alarm 1 time 1
ALARM 1 TIME 1: Defines the period, in seconds, in which the alarm output will be on when alarm 1 is activated. Set zero to disable this function.
A1t2
Alarm 1 time 2
ALARM 1 TIME 2: Defines the period in which alarm 1 will be off after being activated. Set zero to disable this function.
A2t1
Alarm 2 time 1
ALARM 2 TIME 1: Defines the period, in seconds, in which the alarm output will be on when alarm 2 is activated. Set zero to disable this function.
A2t2
Alarm 2 time 2
ALARM 2 TIME 2: Defines the period in which alarm 2 will be off after being
activated. Set zero to disable this function.
Table 4 shows the advanced functions one can obtain with timer.
INPUT CONFIGURATION CYCLE
Type
INPUT TYPE: Selection of the type of signal connected to the PV input. See Table 1.
tYPE This must be the first parameter to be set up.
Dppo DECIMAL POINT POSITION: Only for inputs 16, 17, 18 and
decimal Point 19. Determines the position of the decimal point in all Position
parameters related to PV and SP.
NOVUS AUTOMATION
Controller N2000S
vnI t TEMPERATURE: Selects the temperature unit: Celsius (°C)
unit or Fahrenheit (°F). Invalid for inputs 16, 17, 18 and 19.
Offs
OFFSET for PV: Offset value to be added to the PV to compensate sensor error. Default value: zero. Adjustable
oFFSet between -400 and +400.
Spll
SetPoint Low Limit
SETPOINT LOW LIMIT: For linear inputs, selects the minimum value of indication
and adjustment for parameters related to PV and SP.
For thermocouples and Pt100, selects the minimum value for SP adjustment.
Also defines the lower limit value for retransmission of PV and SP.
Spxl
SetPoint High Limit
SETPOINT HIGHER LIMIT For linear inputs, selects the maximum value of indication and adjustment for parameters related to PV and SP. For thermocouples and Pt100, selects the maximum value for SP adjustment. Also defines the higher limit value for retransmission of PV and SP.
Selects value that will be displayed in the MV screen (the
Pot second screen of the main cycle).
Potentiometer
YES Shows the potentiometer value. NO Shows the PID output.
COMMUNICATION BAUD RATE Available with RS485.
Bavd 0=1200 bps; 1=2400 bps; 2=4800 bps; 3=9600 bps; 4=19200
bps
Addr
COMMUNICATION ADDRESS: With RS485, number that identifies the controller in the communication between 1 and
Address 247.
I/O CYCLE (INPUTS AND OUTPUTS)
I o 1
(input/output 1/2) Alarm outputs 1 and 2.
I o 2
I o 3
(input/output 3 / 4) Control outputs.
I o 4
(input/output 5) I/O 5 FUNCTION: Selects the I/O function
I
o
5
to be used at I/O 5. Options 0 to 16 are available. Usually employed in analog control or retransmission. Refer to the
I/O Channels Configuration item for details.
(input/output 6) I/O 6 FUNCTION: Selects the I/O function to be used at I/O 6.
Refer to the I/O Channels
I o 6 Configuration item for details.
Options 0, 7, 8, 9 and 10 are possible for this input.
f.fvnc
Key function: Allows definition of the
key
function. Available functions:
0 Key not used.
7 Controls output and alarm outputs (RUN function).
8 Invalid selection.
9 Hold program execution.
10 Selects program 1.
These functions are described in item Key function.
CALIBRATION CYCLE
All input and output types are factory calibrated. Recalibration is not
recommended. If necessary, recalibration must be performed by specialized
personnel. If this cycle is accessed by mistake, do not press or keys, go all
through the prompts up to the operation cycle is reached again.
Inl(
input Low Calibration
Inx(
input High Calibration
INPUT OFFSET CALIBRATION: Makes possible to calibrate the PV offset. To change
one digit, press or
as many times as necessary.
INPUT SPAN CALIBRATION (gain): Makes possible to calibrate the PV offset.
6/9
Ovll
output Low Calibration
Ovx(
output High Calibration
(j l
Potl
Potx
OUTPUT OFFSET CALIBRATION: Value to calibrate the offset of the current
control output.
OUTPUT HIGH CALIBRATION: Value for current output high calibration.
COLD JOINT OFFSET CALIBRATION: Parameter to adjust the cold joint temperature
offset.
POTENTIOMETER LOW CALIBRATION. To change one digit, press and as many times as
necessary.
CALIBRATION OF THE POTENTIOMETER’S FULL SCALE.
RAMP AND SOAK PROGRAM
Feature that allows to elaborate a behavior profile for the process. Each program is composed of a set of up to 7 segments, named RAMP AND SOAK PROGRAM, defined by SP values and time intervals.
When the program is defined and runs, the controller starts to automatically generate the SP according to the program.
At the end of the program execution, the controller turns the control output off (rvn = no).
Up to 7 different programs of ramp and soak can be created. The figure below shows an example of the program:
SP SP3 SP4 SP5 SP6
SP1
SP2
SP0
SP7
T1 T2 T3 T4 T5 T6 T7
time
Figure 8 Example of the ramp and soak program.
To execute a profile with fewer segments, set 0 (zero) for the time intervals that follow the last segment to be executed.
SP
SP1 SP2
SP3
SP0 T1
T2 T3 T4=0 time
Figure 9 Example of a program with a few segments
The PtoL Tolerance Function defines the maximum deviation between PV and SP during the program execution. If this deviation is exceeded, the program will be interrupted until the deviation falls within the tolerance range (regardless of time). Programming 0 (zero) at this prompt disables the tolerance; the profile execution will not be halted even if PV does not follow SP (only considers time).
LINK OF PROGRAMS
It is possible to create a more complex program, with up to 49 segments,
joining the 7 programs. This way, at the end of a program execution the
controller immediately starts to run another one.
When a program is created, it must be defined in the LP screen whether there
will be or not another program.
To make the controller run a given program or many programs continuously, it
is only necessary to link a program to itself or the last program to the
first.
SP
Prog 1
Prog 2
SP3 SP4 SP1 SP2
SP5 / SP0
SP3
SP1 SP2
SP0 T1 T2 T3 T4 T5 T1
SP4
T2 T3 T4
time
Figure 10 Example program 1 and 2 linked (interconnected
Controller N2000S
EVENT ALARM
This function makes possible to program the activation of alarms in specific
segments of a program.
For such, alarms must have their function set as rS and be programmed in PE1
to PE7 according to Table 6. The number programmed in the event prompt defines
the alarms to be activated.
CODE ALARM 1 ALARM 2
0
1
×
2
×
3
×
×
Table 6 Event values for ramps and soaks
To configure a ramp and soak program:
· Tolerance values, SPs, time, and event should be programmed.
· If an alarm will be used with the event function, set up its function to
Event Alarm.
· Set control mode to automatic.
· Enable program execution at the rS screen.
· Start the control at the rvn screen. Before executing the program, the
controller waits for PV to reach the initial Setpoint (SP0). Should any power
failure occur, the controller resumes at the beginning of the segment it was
running.
PID PARAMETERS AUTO-TUNING
During auto tune the process is controlled in ON / OFF mode at the programmed
SP. Depending on the process features, large oscillations above and below SP
may occur. Auto-tuning may take several minutes to be concluded in some
processes. The recommended procedure is as it follows:
· Disable the control output at the rvn screen.
· Select automatic mode operation at the Avto screen.
· Select a value different form zero for the proportional band.
· Disable the Soft Start function.
· Disable the ramp and soak function and program SP to a value different from
the current PV value and close to the value at which the process will operate
after tuning.
· Enable auto-tuning at the Atvn screen.
· Enable the control at the rvn screen.
The TUNE flag will remain on during the auto-tuning process.
For the control output with relays or current pulse, automatic tune calculates
the highest possible value for the PWM period. This value can be reduced in
cases of low instability. For a relay of solid state, reduction to 1 second is
recommended.
If the automatic tune does not result a satisfactory control, Table 7 guides
how to correct the process behavior.
PARAMETER Proportional band
Integral rate
Derivative time
PROBLEM Slow response Large oscillation Slow response Large oscillation Slow response or instability Large oscillation
SOLUTION Decrease Increase Increase Decrease Decrease Increase
Table 7 Suggestions for manual tuning of PID parameters
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CALIBRATION
INPUT CALIBRATION
All input and output types are factory calibrated. Recalibration is not
recommended for operators with no experience. In case recalibration of any
scale is necessary, proceed as it follows:
a) Set up the input type to be calibrated.
b) Set the lower and upper limits of extreme values for the input type.
c) Apply a signal to the input that corresponds to a known value and a little
bit over the lower limit of the indication.
d) Access the inLC parameter. By using the and keys, select the expected value
that will appear in the parameters display.
e) Apply a signal to the input that corresponds to a known value and a little
bit under the lower limit of the indication.
f) Access the inLC parameter. By using the and keys, select the expected value
that will appear in the parameters display.
g) Repeat c to f up to no new adjustment is necessary.
Note: When the controller is calibrated, check if the required excitation
current of Pt100 is compliant to the Pt100 excitation current used in this
instrument: 0.17 mA.
ANALOG OUTPUT CALIBRATION
1. Configure I/O 5 for 11 (0-20 mA) or 12 (4-20 mA) values.
2. Connect a mA meter in the analog control output.
3. Disable Auto-Tune and Soft Start functions.
4. Program the lower limit of MV in the ovLL screen with 0.0 % and the upper limit of MV in the ovxL screen with 100.0%.
5. Set no for the manual mode avto screen.
6. Enable the control (YES) at the rvn screen.
7. Program MV in 0.0 % in the operation cycle.
8. Select the ovLC screen. Use the and keys to obtain the 0 mA (or 4 mA for type 12) reading in the mA meter.
9. Program MV in 100.0 % in the operation cycle.
10. Select the ovxC screen. Use the and 20 mA.
keys to obtain the
11. Repeat 7 to 10 up to no new adjustment is necessary.
POTENTIOMETER CALIBRATION a) Set up the input type to be calibrated. b) Set
the lower and upper limits of indication for the extremes of the
input type. c) Adjust the potentiometer with the minimum value. d) Access the
PotL parameter. By using the and keys,
select 0.0 in the parameters display. e) Adjust the potentiometer with the
maximum value. f) Access the Potk parameter. By using the and keys,
select 100.0 in the parameters display.
g) Repeat c to f up to no new adjustment is necessary.
SERIAL COMMUNICATION
An optional master-slave RS485 serial communication interface is available. It
is used for communication with a supervisor machine (master). The controller
is always the slave.
Communication starts only with the master, which sends a command to the slave
address with which it wants to communicate. The slave takes the command and
sends the correspondent response to the master.
The controller accepts also broadcast commands.
Controller N2000S
FEATURES
Signals compliant to the RS-485 standard. Two-wire connection between the
master and up to 31 instruments in bus topology (it may address up to 247
instruments). Maximum cable length: 1,000 meters. Time to disconnect from the
controller. Maximum 2 ms after the last byte.
Communication signals are electrically isolated from the rest of the device,
speed options are 1200, 2400, 4800, 9600 or 19200 bps.
Number of data bits: 8, without parity.
Number of stop bits: 1.
Time of response transmission start: Maximum 100 ms after receiving the
command.
Protocol used: MODBUS (RTU), available in most market-available supervisory
software.
RS-485 signals are:
D1 D D + B Bidirectional data line.
Terminal 25
D0 D – A Inverted bidirectional data line.
Terminal 26
C
Optional connection which improves Terminal 27
the communication performance.
COMMUNICATION PARAMETERS CONFIGURATION
Two parameters must be configured for serial use:
bavd: Communication speed. All equipment’s with the same speed.
Addr: Controller communication address. Each controller must have an exclusive
address.
PROBLEMS WITH THE CONTROLLER
Connection errors and inadequate programming are the most common errors found
during the controller operation. A final review may avoid loss of time and
damages.
The controller displays some messages to help the user identify problems.
MESSAGE —-
Err1
PROBLEM Open input. Without sensor or signal. Connection problems in the Pt100 cable.
Table 8 Problems
Other error messages displayed by the controller can account for errors in the
input connections or type of selected input noncompliant with the sensor or
signal applied to the input. If errors persist even after a review, contact
the manufacturer. Also inform the device serial number. To find out the serial
number, press for more than 3 seconds.
The controller also has a visual alarm (the display flashes) when the PV value
is out of the range set by spxl and spll.
SPECIFICATIONS
DIMENSIONS:………………………………….. 48 x 96 x 92 mm (1/16 DIN).
…………………………………………………….Approximate weight: 250 g
PANEL CUT-OUT: ………………………………45 x 93 mm (+0.5 -0.0 mm)
POWER: ……………………………100 to 240 Vac / dc (±10 %), 50/60 Hz. Optional 24 V:……………….
12 to 24 Vdc / 24 Vac (-10 % / +20 %) Max. Consumption:……………………………………………………….
3 VA
ENVIRONMENTAL CONDITIONS: ………………………………..5 to 50 °C Relative humidity
(maximum): …………………………. 80 % up to 30 °C ………………… For temperatures above 30 °C,
decrease 3 % per °C …………… Internal use, Installation category II. Pollution
degree 2.
………………………………………………………………… Altitude < 2000 m
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INPUT: T/C, Pt100, voltage and current, configurable according to Table 1
Internal resolution: …………………………………………….. 19500 levels Display resolution:
………………. 12000 levels (from -1999 to 9999) Input sample
rate:………………………………………………5 per second Accuracy: ……..Thermocouples J, K and T:
0.25 % of span ±1 ºC …………………………. Thermocouple N, R, S: 0.25 % of span ±3 ºC
…………………………………………………………….Pt100: 0.2 % of span ………………………………4-20 mA, 0-50 mV, 0-5
Vdc: 0.2 % of span Input impedance: … 0-50 mV, Pt100 and thermocouples: >10 M
……………………………………………………………………… 0-5 V: >1 M ………………………………………… 4-20 mA: 15 (+2 Vdc @
20 mA) Pt100 measurement: 3-wire circuit, cable resistance compensation
(=0.00385), Excitation current: 0.170 mA All input types are factory
calibrated. Thermocouples according to NBR 12771/99, RTD’s NBR 13773/97.
DIGITAL INPUT (I/O6): ………………Dry contact or NPN open collector
ANALOG OUTPUT (I/O5):…………..0-20 mA or 4-20 mA, 550 max. 1500 levels, isolated,
control output or PV or SP retransmission
CONTROL OUTPUT: 2 Relays SPDT (I/O1 and I/O2): 3 A / 240 Vac 2 Relays SPST-NO
(I/O3 and I/O4): 1.5 A / 250 Vac Voltage pulse for SSR (I/O 5): 10 V max. / 20
mA
AUXILIARY VOLTAGE SUPPLY: ………………. 24 Vdc, ±10 %; 25 mA
EMC:…………………………. EN 61326-1:1997 and EN 61326-1/A1:1998
SAFETY: …………………….. EN61010-1:1993 and EN61010-1/A2:1995
PROPER CONNECTIONS FOR 6.3 MM PIN TYPE THERMINALS. FRONT PANEL: …………………………….
IP65, polycarbonate UL94 V-2
HOUSING:…………………………………………… IP20, ABS+PC UL94 V-0
CERTIFICATIONS: CE, UL and UKCA PROGRAMMABLE PWM CYCLE FROM 0.5 TO 100
SECONDS. AFTER POWER UP, IT STARTS OPERATION AFTER 3 SECONDS.
WARRANTY
Warranty conditions are available on our website
www.novusautomation.com/warranty.
Controller N2000S
NOVUS AUTOMATION
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