Controller N2000S
Controller N2000S
UNIVERSAL PROCESS CONTROLLER – INSTRUCTIONS MANUAL – V2.1x
SAFETY SUMMARY
PRESENTATION / OPERATION
The symbols below are used on the equipment and throughout this
document to draw the user’s attention to important operational and
safety information.
The controller frontal panel is shown in Figure 1:
CAUTION OR WARNING:
CAUTION OR WARNING:
Read complete instructions prior to
installation and operation of the
unit.
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.
Figure 1 – Frontal panel
PV/Programming Display: Shows the PV value. When in
programming mode, shows the parameter name.
SP/Parameters Display: Shows the SP and other programmable
parameter values of the controller.
COM Indicator: Flashes when data is exchanged with the external
environment.
TUNE Indicator: Lights during automatic tuning.
MAN Indicator: Indicates that the controller is in the manual control
mode.
RUN Indicator: Indicates that the controller is active, with control and
alarm outputs enabled.
OUT Indicator: When the analog output (0-20 mA or 4-20 mA) is set
for controlling actions the indicator lights continuously.
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).
A1, A2 Indicators: Indicates the respective alarm status.
CHARACTERISTICS
BACK Key: ReReturns to the previous parameter shown in the
parameter display.
• Sensor break protection in any condition; Universal multi-sensor
input without hardware change;
• Potentiometer input for current position reading;
• Auto-tuning of PID parameters;
• Control outputs: relays;
• Automatic/Manual “bumpless” transfer;
• Two alarm outputs; functions: minimum, maximum, differential
(deviation), open sensor and event. Two-alarm temporization;
• 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 programs of 7 segments with linking
capability;
• RS-485 serial communication; RTU MODBUS protocol;
• Configuration protection;
A3 Indicators: Indicates the valve (I/O3) opening output status.
A4 Indicators: Indicates the valve/dumper (I/O4) closing output status.
P
PROG key: Shows the controller programmable parameters.
Increase and
Decrease keys: Change the parameter values.
Auto/Man key: Shortcut for automatic/manual control selection.
Alternates the control mode between automatic and manual each
time the key is pressed.
F Programmable Function Key: Can be assigned to the special
functions described for the f.fvnc parameter.
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.
Ser.t) so
that the controller starts operating with a known reference.
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).
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Controller N2000S
Other special functions, including ramp and soak, alarm timer, digital
input, etc., can be used to achieve better performance.
CONFIGURATION / RESOURCES
The setup parameters are grouped in cycles, in which each message
is a parameter to be defined. The 7 parameter cycles are:
INPUT TYPE SELECTION
CYCLE
1 - Operation
2 - Tuning
3 - Programs
4 - Alarms
5 - Input configuration
6 - I/Os
7 - Calibration
ACCESS
Free
The input type must be selected by the user in the “Type” parameter
using the keyboard (see input types in Table 1).
TYPE
CODE
J
0
1
Range: -50 to 760 °C (-58 to 1400 ºF)
2
3
Range: -100 to 400 °C (-148 to 752 ºF)
4
5
Range: 0 to 1760 °C (32 to 3200 ºF)
6
7
Range: -199.9 to 530.0 °C (-199.9 to 986.0 ºF)
8
9
J Linearization. Programmable range: -110 to 760 °C
10
11
T linearization. Programmable range: -160 to 400 °C
12
13
R linearization Programmable range: 0 to 1760 °C
14
15
Pt100 linearization. Prog. range: -200.0 to 530.0 °C
16
17
Linear. Programmable indication from –1999 to 9999.
18
19
Linear. Programmable indication from –1999 to 9999.
K
Reserved access
T
N
R
S
The operation cycle (1st cycle) is freely accessed. The other cycles
require a keystroke combination to enable access.
Press
(BACK) and
P
(PROG) simultaneously
When the required cycle is found, all the parameters within this cycle
can be accessed by pressing the P key (or
, to go backwards).
To return to the operation cycle, press P 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
The parameter values can be locked after configuration is finished
thus preventing undesirable changes. Parameters can be seen but
not changed. Protection is activated by a combination of keystrokes
and a internal key.
Press
and
want to protect.
Pt100
Pt100
4-20 mA
4-20 mA
4-20 mA
4-20 mA
4-20 mA
4-20 mA
4-20 mA
4-20 mA
0 – 5 0 mV
4-20 mA
0 – 5 Vdc
4-20 mA
Within the controller, the PROT key completes the locking function.
When PROT is OFF the user is allowed to lock and unlock the
cycles. When PROT is ON changes are not allowed: if cycles are
protected protection cannot be removed, if there aren’t cycles
protection, they cannot be made.
Range: -90 to 1370 °C (-130 to 2498 ºF)
Range: -90 to 1300 °C (-130 to 2372 ºF)
Range: 0 to 1760 °C (32 to 3200 ºF)
Range: -200 to 530 °C (-328 to 986 ºF)
K linearization Programmable range: -150 to 1370 °C
N linearization Programmable range: -90 to 1370 °C
S linearization Programmable range: 0 to 1760 °C
Pt100 linearization. Prog. range: -200 to 530 °C
Linear. Programmable indication from –1999 to 9999.
Input square root extraction
Table 1 – Input types
simultaneously for 3 seconds, in the cycle you
To unlock a cycle press
simultaneously for 3 seconds.
and
Displays will flash briefly to confirm locking or unlocking
operation.
FEATURES
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/O6.
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
CONTROL OPERATION
The controller is based on the "SErt
SErt"
SErt parameter (Time of serve
excursion). 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
SErF"
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
SErr".
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
Two SPDT relays are available in terminals 7 to 12. They can be
assigned codes O, 1 or 2.
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
Two SPST relays, available in terminals 3 to 6. They are assigned
code 5.
5 – Defines channel as control output.
I/O 5 – Analog output and digital input
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.
0–
1–
2–
3–
4–
5–
6-
No function (disabled);
Defines channel as alarm 1;
Defines channel as alarm 2;
Invalid selection;
Invalid selection;
Invalid selection;
Digital input, manual/automatic selection:
Closed = manual control;
Open = automatic control
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Controller N2000S
7–
Digital input, Start/Stop control (“RvN
RvN”:
RvN YES / no).
Closed = outputs enabled
Open = outputs disabled
8–
9–
Invalid selection;
Digital input, holds or allows R&S program progress.
Closed = enables program running;
Opened = holds program (the program resumes normal
operation when the contact is closed again. The
program resumes from the point is was prior to
the hold)
10 – R&S program 1 selection. This option is useful when the user
wants to switch between the main setpoint and a second SP
defined in the ramp and soak program.
Closed = selects program 1;
Open = assumes the main setpoint
11–
11
12–
12
13–
13
14–
14
15–
15
16–
16
Configures the I/O5 as an analog 0-20 mA control output.
Configures the I/O5 as an analog 4-20 mA control output.
Analog 0-20 mA retransmission of PV.
Analog 4-20 mA retransmission of PV.
Analog 0-20 mA retransmission of SP.
Analog 4-20 mA retransmission of SP.
I/O 6 – Digital Input
06-
Disable the alarm;
Digital input, manual/automatic selection:
Closed = manual control;
Open = automatic control
7–
8–
9-
Start/Stop control (“RvN
RvN”:
RvN YES / no).
Closed = outputs enabled
Open = outputs disabled
Invalid selection;
Holds or allows R&S program progress.
Closed = enables program running;
Opened = holds the program (the program resumes normal
operation when the
contact is closed again)
10 – R&S program 1 selection. This option is useful when the user
wants to switch between the main setpoint and a second SP
defined in the ramp and soak program.
Closed = selects program 1;
Open = takes 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.
POTENTIOMETER INPUT
The potentiometer of valve position can be seen in the controller. It
must be 10 kΩ and connections must be as Figure 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.
• Resistance fail
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). Details of the "resistance fail" option can
be found in a specific documentation that is sent with the product
when the option is purchased.
TYPE
PROMPT
ACTION
Disabled
off
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.
Sensor
ierr
Break
(input Error)
Event
Can be activated at a specific segment of ramp and
rs
Alarm
soak program.
(ramp and
Soak)
Detection rfail
Detects a heater broken condition
resistance
fail
Low Alarm
lo
PV
SPAn
High Alarm
ki
LOW
difl
PV
SPAn
PV
SV - SPAn
Differential
HIGH
positive SPAn
difk
Differential
SV
SV - SPAn
negative SPAn
PV
SV
Differential
PV
SV
SV + SPAn
positive SPAn
dif
SV + SPAn
PV
SV
negative SPAn
PV
SV - SPAn
PV
SV
SV + SPAn
positive SPAn
SV + SPAn
SV
SV - SPAn
negative SPAn
Table 3 – Alarm functions
SPAn is meant to be the Alarm Setpoints “SPA1”, “SPA2”.
• Minimum value
It is activated when the measured value is below the value defined in
the alarm Setpoint.
• Maximum value
It is activated when the measured value is above the value defined in
the alarm Setpoint.
• 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
7.2 in this manual.
• Resistance fail
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). Details of the "resistance fail" option can
be found in a specific documentation that is sent with the product
when the option is purchased.
In order 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.
• Minimum value
It is activated when the measured value is below the value defined in
the alarm Setpoint.
ALARM CONFIGURATION
• Differential (or Band)
In this function, the parameters “SPA1
SPA1”,
SPA2”
SPA1 “SPA2
SPA2 represent the PV
deviation as compared to the main SP.
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
7.2 in this manual.
NOVUS AUTOMATION
• Maximum value
It is activated when the measured values is above the value defined in
the alarm Setpoint.
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.
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Controller N2000S
• Minimum differential
It is activated when the measured value is below the value defined in.
(SP - Deviation)
9–
• Maximum differential
It is activated when the measured value is above the value defined in:
(SP + Deviation)
Note: When the program is interrupted, execution is held (the control
remains active). The program resumes when the signal applied to the
digital input allows it (closed contact).
ALARM TIMER
10 – Defines channel to select program 1. This option is useful
when the user wants to switch between the main setpoint and
a second one defined in the program of ramp and soak.
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
A1t1”,
A1t2”,
A2t1”
A2t2
A1t1 “A1t2
A1t2 “A2t1
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 INITIAL BLOCKING
The initial blocking option prevents the alarm from being recognized if
an alarm condition is present when the controller is turned of 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.
Closed = enables program execution
Open = interrupts program
Closed = selects program 1;
Open = takes 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
The
key is located in the frontal panel. It performs function 6 of
the digital input I/O6: switch between automatic and manual control.
Operation of this key is enabled in parameter aven.
The MAN indicator flashes when the manual control mode is
selected.
INSTALLATION / CONNECTIONS
PANEL MOUNTING
The controller must be panel-mounted following the steps presented
below:
1. Make the panel slot;
The initial blocking is disabled for the open sensor function.
ALARM
FUNCTION
t1
t2
Normal
0
0
0
1 to 6500 s
2. Remove fixing brackets;
3. Insert the controller into the panel slot;
ACTION
4. Replace the clamps in the controller pressing it to reach a
firm grip at the panel.
Alarm
Output
ELECTRICAL CONNECTIONS
Alarm Event
Delayed
Alarm
Output
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.
T2
Alarm Event
Pulse
1 to 6500 s
0
Alarm
Output
Defines the channel that will command programs execution
T1
Alarm Event
Oscillator
1 to 6500 s 1 to 6500 s
Alarm
T1
Output
alarme
Alarm Event
T2
T1
Table 4 – Temporization functions for Alarms 1 and 2
PV AND SP ANALOG RETRANSMISSION
The controller has an analog output (I/O5) 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
max. and min. limits that define the output range, which can be
defined in parameters “SPLL
SPLL”
SPkL”.
SPLL and “SPkL
SPkL
To obtain voltage retransmission the user must install a shunt resistor
(550 Ω max.) in the analog output terminal. The resistor value
depends on the voltage range required.
Figure 2 – Rear 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.
Disables the alarm;
•
Defines the channel for the digital input and turns off the
(“RvN
RvN”:
RvN YES / no) control.
Closed = enabled outputs
Open = control output and alarms turned off;
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.
KEY FUNCTIONS
F key (special function key) in the frontal panel of the controller can
perform the same function as the Digital Input I/O6 (except function
6). The key function is defined by the user in the “fFvn
fFvn”
fFvn parameter:
F
07–
8–
Invalid selection;
NOVUS AUTOMATION
4/9
Controller N2000S
INPUT CONNECTIONS
Pr n
It is important that they are very well connected; the sensor wires
must be well fixed in the terminals of the rear panel.
PROGRAM EXECUTION: Selects the ramp and soak
Program program to be executed.
0 – does not run program
number
1, 2, 3, 4, 5, 6 and respective program.
• 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.
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 enabled.
TUNING CYCLE
Figure 3 – Thermocouple and 0-50
mV
Figure 4 - Pt100 wiring with three
conductors
atvn
(Auto-tune) – auto tune of PID parameters. See item 9 in this
manual.
YES – Enables auto tune.
• 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 mA
Figure 6 – Connection of 5 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.
NO – Disables 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
(HYSteresis) – CONTROL HYSTERESIS: Hysteresis value
for ON/OFF control. This parameter is shown only for
ON/OFF control (Pb=0).
Ir‘
(integral rate) – INTEGRAL RATE: Value of I term of PID
control in repetetions per minute (Reset). Adjustable
between 0 and 24.00. Presented if proportional band ≠ 0.
dt
(derivative time) - DERIVATIVE TIME: Value of D term of
the PID control in seconds. Adjustable between 0 and 250
s. Presented if proportional band ≠ 0.
sert
(Servo time) – time of servo excursion, from totally open to
totally closed. Programmable from 15 to 600 s.
serr
(Servo resolution) – control resolution, determines the dead
band of servo activation. Very low values (<1 %) make the
servo “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
Figure 7 – Potentiometer connection
Sp.a1
Sp.a2
CONFIGURATION PARAMETERS
(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. See item
5.3.
It is not used in other alarm functions.
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. In case of
hardware error the status display will show “Er
Er n”, where n
is the error code.
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.
NOVUS AUTOMATION
PROGRAM CYCLE
tbas
TIME BASE: Selects the time base for the ramp and soak.
Valid for all profile programs.
0 - PT1 to PT7 values are in seconds;
1 - PT1 to PT7 values are in minutes;
Pr n
(Program number) – PROGRAM EDITING: Selects the ramp
and soak program to be edited in the next prompts of this
cycle.
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 (see
item 8).
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Controller N2000S
Pt1
Pt7
(Program time) – PROGRAM SEGMENTS TIME, 1 to 7:
Defines elapsed time in minutes of each segmento of the
program (see item 8).
Pe1
Pe7
(Program event) - 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
rS“
rS
setting.
Lp
(Link to Program) - LINK TO PROGRAM: Number of the next
program to be connected. Programs can be linked to generate
profiles of up to 49 segments (see item 8.1).
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
bla1
bla2
xya1
xya2
A1t1
A1t2
A2t1
A2t2
(Function of Alarm) – ALARM FUNCTION: Defines the
alarm functions according to options shown in Table 3.
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.
Defines also the higher limit value for retransmission of PV
and SP.
Pot
(Potentiometer) – Selects value that will be displayed in the
MV screen (the second screen of the main cycle).
YES - Shows the potentiometer value
NO - Shows the PID output
Bavd
0=1200 bps; 1=2400 bps; 2=4800 bps; 3=9600 bps;
4=19200 bps
Addr
I o 1
I/O 1 FUNCTION: Selects the I/O function to be used at I/O
1. Options 0 to 5 are possible for this output. Refer to the
IO Channels Configuration item for details.
I o 2
I/O 2 FUNCTION: Selects the I/O function to be used at I/O
2. Options 0 to 5 are possible for this output. Refer to the
IO Channels Configuration item for details.
I o 3
I/O 3 FUNCTION: Selects the I/O function to be used at I/O
3. Options 0 to 5 are possible for this output. Refer to the
IO Channels Configuration item for details.
I o 4
I/O 4 FUNCTION: Selects the I/O function to be used at I/O
4. Options 0 to 5 are possible for this output. Refer to the
IO Channels Configuration item for details.
I o 5
(input/output 5) - I/O 5 FUNCTION: Selects the I/O function
to be used at I/O 5. Options 0 to 16 are available. Usually
employed in analog control or retransmission. Refer to the
IO Channels Configuration item for details.
I o 6
I/O 6 FUNCTION: Selects the I/O function to be used at I/O
6 (Digital Input). Options 0, 7, 8, 9 and 10 are possible for
this input. Refer to the IO Channels Configuration item for
details.
f.fvnc
F Key function – Allows definition of the F key function.
Available functions:
0Key not used;
7Controls output and alarm outputs (RUN
function)
8Invalid selection;
9Halt program execution;
10Selects program 1;
10
INPUT CONFIGURATION CYCLE
Type
(tYPE) – TYPE OF INPUT: Selection of the type of signal
connected to the PV input. See Table 1.
This must be the first parameter to be set up.
Dppo
(decimal Point Position) – DECIMAL POINT POSITION:
Only for inputs 16, 17, 18 and 19. Determines the position of
the decimal point in all parameters related to PV and SP.
vnI t
(unit) - TEMPERATURE: Selects the temperature unit:
Celsius (“°C“) or Fahrenheit (“°F
F“).Not valid for inputs 16, 17,
18 and 19.
Offs
(oFFSet) - OFFSET for PV: Offset value to be added to the
PV to compensate sensor error. Default value: zero.
Adjustable 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.
(Address) - COMMUNICATION ADDRESS: With RS485,
number that identifies the controller in the communication
between 1 and 247.
I/O CYCLE (INPUTS AND OUTPUTS)
oFF, iErr, rS, rFAil, Lo, xi,
xi, DiFL, DiFx, DiF
(blocking for Alarms) - ALARM INITIAL BLOCKING: Alarm
initial blocking function for alarms 1 to 4
YES enables initial blocking
NO disables initial blocking
(Hysteresis of Alarms) – ALARMS HYSTEREIS: Defines
the differential range between the PV value at which the
alarm is turned on and the value at which it is turned off.
One hysteresis value is set for each alarm.
(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.
(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.
(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.
(Alarm 1 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.
COMMUNICATION BAUD RATE Available with RS485.
These functions are described in item 4.2.
aven
Enable the
key – Allows the user to enable the
key or not, so that the user can quickly switch from
automatic to manual control.
Yes Enables .
NO
Disables
.
For thermocouples and Pt100, selects the minimum value for
SP adjustment.
Defines also the lower limit value for retransmission of PV
and SP.
NOVUS AUTOMATION
6/9
Controller N2000S
SP
CALLIBRATION 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) – INPUT OFFSET CALIBRATION:
Makes possible to calibrate the PV offset. To change one
or
digit, press
as many times as necessary.
Inx(
(input High Calibration) – INPUT SPAN CALIBRATION
(gain): Makes possible to calibrate the PV offset.
Ovll
(output Low Calibration) – OUTPUT LOW CALIBRATION:
Value for current output low calibration (offset).
Ovx(
(output High Calibration) – OUTPUT HIGH CALIBRATION:
Value for current output high calibration.
(j l
COLD JUNCTION OFFSET CALIBRATION: Sets the cold
junction offset calibration.
Potl
POTENTIOMETER LOW CALIBRATION. To change one
digit, press
and
as many times as necessary.
Potx
POTENTIOMETER HIGH CALIBRATION – End of scale
calibration of the potentiometer.
RAMP AND SOAK PROGRAM
This feature allows for the elaboration of 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
rvn”=
rvn no).
Up to 7 different programs of ramp and soak can be created. The
figure below shows an example of the program:
SP
SP4
SP3
SP5
SP6
SP2
SP1
SP7
SP0
T1
T2
T3
T4
T6
T5
T7
tim e
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
T1
T2
T3
T4=0
The tolerance function of the “PtoL
PtoL”
PtoL 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 seven 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
LP"
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.
NOVUS AUTOMATION
SP3
SP1
SP2
SP2
SP1
SP4
SP0
T1
T2
T3
T4
T5
T1
T2
T3
T4
time
Figure 10 – Example program 1 and 2 linked (interconnected).
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
rS “ and be
programmed in “ PE1“
PE1 to “ PE7“
PE7 according to Table 6. The number
programmed in the event prompt defines the alarms to be activated.
CODE
0
1
2
3
ALARM 1
ALARM 2
X
X
X
X
Table 6 – Event values for ramps and soaks
In order 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 in “ rS “ screen.
Start the control at the “rvn
rvn”
rvn prompt.
Before executing the program the controller waits for PV to reach the
initial setpoint (“SP0
SP0”).
SP0 Should any power failure occur the controller
resumes at the beginning of the segment it was running.
•
AUTO TUNING OF PID PARAMETERS
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 tune may take
several minutes to be concluded in some processes.
The recommended procedure is as it follows:
•
Disable the control output at the “rvn
rvn”
rvn prompt..
•
Select auto mode operation at the “Avto
Avto”
Avto prompt.
•
Select a value different form zero for the proportional band.
•
Disable the soft-start function
•
Disable the ramp and soak function and program a new PV value
other than the present PV (close to the desired set point).
•
Enable auto tuning at the “Atvn
Atvn”
Atvn prompt.
•
Enable the control at the “rvn” screen.
time
Figure 9 – Example of a program with a few segments
SP5 / SP0
SP4
SP3
SP3
SP0
Prog 2
Prog 1
During the auto tune procedure the TUNE indication will remain on.
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, refer to
Table 7 for manual fine tuning procedure.
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
7/9
Controller N2000S
CALIBRATION
SERIAL COMMUNICATION
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
inLC”
and
inLC parameter. By using the
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
inLC”
and
keys
inLC parameter. By using the
select the expected value that will appear in the parameters
display.
g) Repeat c to f up to no new adjustment is necessary.
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.
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 2ms 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
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.
Time of response transmission start: Maximum 100ms after receiving
the command.
ANALOG OUTPUT CALIBRATION
Protocol used: MODBUS (RTU), available in most market-available
supervisory software.
1. Configure I/O 5 for 11 (0-20 mA) or 12 (4-20 mA) values.
RS-485 signals are:
2. Connect a mA meter in the analog control output.
3. Disable auto-tune and soft-start.
4. Program the lower limit of MV in the “ovLL
ovLL”
ovLL prompt with 0.0 %
and the upper limit of MV in the “ovxL”
ovxL”with
100.0%.
ovxL”
D1 = D:
D0 = D:
C = GND:
Bidirectional data line
Inverted bidirectional data line
Optional connection to improve communication
performance
5. Set “no
no “ for the manual mode “avto
avto”
avto prompt.
COMMUNICATION PARAMETERS CONFIGURATION
6. Enable the control (YES
YES)
rvn”
YES at the “rvn
rvn prompt.
Two parameters must be configured for serial use:
7. Program MV in 0.0 % in the operation cycle.
bavd:
bavd Communication speed. All equipments with the same speed.
Addr: Controller communication address. Each controller must
Addr
have an exclusive address.
and
8. Select the “ovLC
ovLC’’
ovLC prompt. Use the
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
ovxC”
ovxC prompt. Use the
20 mA.
and
keys to obtain the
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.
11. Repeat 7 to 10 up to no new adjustment is necessary.
POTENTIOMETER CALIBRATION
The controller displays some messages to help the user identify
problems.
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
PotL”
PotL parameter. By using the
select 0.0 in the parameters display.
and
keys
e) Adjust the potentiometer with the maximum value.
f) Access the “Potk
Potk”
Potk parameter. By using the
select 100.0 in the parameters display.
g) Repeat c to f up to no new adjustment is necessary.
PROBLEMS WITH THE CONTROLLER
and
keys
MESSAGE
PROBLEM
----
Open input. Without sensor or signal.
Err1
Connection problems in the Pt100 cable
Other error messages displayed by the controller can account for
errors in the input connections or type of selected input non compliant
with the sensor or signal applied to the input. If errors persist, even
after a review, contact the manufacturer. Inform also 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.
spll
ORDERING INFORMATION:
NOVUS AUTOMATION
N2000S -
485 -
24V
A
B
C
A: Series model:
N2000S
B: Digital communication:
blank
485 (RS485, Modbus protocol)
C: Voltage rating:
blank (100 to 240 Vac)
24V (24 Vdc/ac)
8/9
Controller N2000S
SPECIFICATIONS
WARRANTY
INPUT.................... Keyboard selection of input type (refer to Table 1)
This product is covered by a 12-month warranty provided the
purchaser presents the sales receipt and the following conditions are
met:
Internal resolution: ..................................................... 19500 levels
Display resolution: ....................12000 levels (from -1999 to 9999)
Input sample rate:......................................................5 per second
•
Products are covered for one year from the original date of
purchase. Please retain the dated sales receipt as evidence of the
date of purchase. You will need it for any warranty service
•
Within this period, warranty against defects in material and
workmanship under normal use is free of charge.
•
For repair, send the product and the sales receipt to our address.
Expenses and transportation risks are under the purchaser’s
responsibility.
•
This warranty does not cover any damage due to accident,
misuse, abuse, or negligence.
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 MΩ
................................................................................. 0-5 V: >1 MΩ
.................................................4-20 mA: 15 Ω (+2 Vdc @ 20 mA)
Pt100 measurement: .................................. standard (α=0.00385)
Excitation current:........................................................... 0.170 mA
3-wire circuit, cable resistance compensation
All input types are factory calibrated according to IEC-584 for
Thermocouples and IEC-751 for Pt100
DIGITAL INPUT (I/O6): .................. Dry contact or NPN open collector
ANALOG OUTPUT (I/O5): ..............0-20 mA or 4-20 mA, 550 Ω 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
...................... Logic pulse for SSR drive (I/O5): 10 V max / 20 mA
This feature requires an external shunt resistor, provided with the
instrument, to be connected to terminals 19 and 20.
DIMENSIONS:......................................... 48 x 96 x 92 mm (1/16 DIN).
.............................................................Approximate weight: 150 g
PANEL CUT-OUT: .................................... 45 x 93 mm (+0.5 -0.0 mm)
TERMINAL CONNECTION:..... 24 screws accepting 6.3 mm fork lugs
POWER: ................................... 100 to 240 Vac/dc (±10 %), 50/60 Hz.
Optional: ............................................................ 24 Vac/dc ±10 %
Max. Consumption:................................................................ 9 VA
ENVIRONMENTAL CONDITIONS:.......................................5 to 50 °C
Relative humidity (maximum): 80 % up to 30 ºC.
For temperatures above 30 ºC, decrease 3 % per ºC.
Installation category II. Pollution degree 2. Altitude < 2000 m
EMC :...............................EN 61326-1:1997 and EN 61326-1/A1:1998
SAFETY: ...........................EN61010-1:1993 and EN61010-1/A2:1995
PROGRAMMABLE PWM CYCLE FROM 0.5 SEC. AND 100 SEC.;
START UP 3 SECONDS AFTER POWER UP;
NOVUS AUTOMATION
9/9
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