NOVUS N2000S User Manual

Controller N2000S

UNIVERSAL PROCESS CONTROLLER – INSTRUCTIONS MANUAL – V2.1x

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.

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).

CHARACTERISTICS

• 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;

PRESENTATION / OPERATION

The controller frontal panel is shown in Figure 1:

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.

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: Shows the controller programmable parameters.

BACK Key: ReReturns to the previous parameter shown in the

parameter display.

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.

Programmable Function Key: Can be assigned to the special functions described for the f.fvnc

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 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).

Figure 1 – Frontal panel

f.fvnc parameter.

f.fvncf.fvnc

Ser.t) so

Ser.tSer.t

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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.

The setup parameters are grouped in cycles, in which each message is a parameter to be defined. The 7 parameter cycles are:

CYCLE ACCESS

1 - Operation Free 2 - Tuning 3 - Programs 4 - Alarms 5 - Input configuration 6 - I/Os 7 - Calibration

Reserved access

The operation cycle (1st cycle) is freely accessed. The other cycles require a keystroke combination to enable access.

Press

(BACK) and

When the required cycle is found, all the parameters within this cycle can be accessed by pressing the To return to the operation cycle, press parameters of the current cycle have been shown.

(PROG) simultaneously

key (or , to go backwards).

many times up to all

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

simultaneously for 3 seconds, in the cycle you

and

want to protect.

To unlock a cycle press

simultaneously for 3 seconds.

and

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 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.

CONTROL OPERATION

The controller is based on the "SErt

SErt" parameter (Time of serve

SErtSErt

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" parameter defines the time in seconds for the calculation and

SErFSErF

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". If the difference between the current output value

SErrSErr

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.

CONFIGURATION / RESOURCES

INPUT TYPE SELECTION

The input type must be selected by the user in the “Type” parameter using the keyboard (see input types in Table 1).

TYPE CODE FEATURES

Pt100

4-20 mA

0 – 5 0 mV

4-20 mA

0 – 5 Vdc

4-20 mA

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

Two SPDT relays are available in terminals 7 to 12. They can be assigned codes O, 1 or 2.

0000 - Disables the alarm; 1111 - Defines channel as alarm 1; 2

2 - Defines channel as alarm 2;

2 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.

5555 – 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.

0000 – No function (disabled); 1111 – Defines channel as alarm 1; 2222 – Defines channel as alarm 2; 3333 – Invalid selection; 4444 – Invalid selection; 5555 – Invalid selection; 6666 - Digital input, manual/automatic selection:

Closed = manual control; Open = automatic control

Range: -50 to 760 °C (-58 to 1400 ºF)

0000

Range: -90 to 1370 °C (-130 to 2498 ºF)

1111

Range: -100 to 400 °C (-148 to 752 ºF)

2222

Range: -90 to 1300 °C (-130 to 2372 ºF)

3333

Range: 0 to 1760 °C (32 to 3200 ºF)

4444

Range: 0 to 1760 °C (32 to 3200 ºF)

5555

Range: -199.9 to 530.0 °C (-199.9 to 986.0 ºF)

6666

Range: -200 to 530 °C (-328 to 986 ºF)

7777

J Linearization. Programmable range: -110 to 760 °C

8888

K linearization Programmable range: -150 to 1370 °C

9999

T linearization. Programmable range: -160 to 400 °C

1010

N linearization Programmable range: -90 to 1370 °C

1111

R linearization Programmable range: 0 to 1760 °C

1212

S linearization Programmable range: 0 to 1760 °C

1313

Pt100 linearization. Prog. range: -200.0 to 530.0 °C

1414

Pt100 linearization. Prog. range: -200 to 530 °C

1515

Linear. Programmable indication from –1999 to 9999.

1616

Linear. Programmable indication from –1999 to 9999.

1717

Linear. Programmable indication from –1999 to 9999.

1818

Input square root extraction

1919

Table 1 – Input types

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Controller N2000S

No active alarm. This output can be used as a digital

SPAn

SV - SPAn

SV + SPAn

SVPVSV + SPAn

SV - SPAn

SV + SPAn

7777 – Digital input, Start/Stop control (“RvN

Closed = outputs enabled Open = outputs disabled

8888 – Invalid selection; 9999 – 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

1010

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– Configures the I/O5 as an analog 0-20 mA control output.

1111 12

12– Configures the I/O5 as an analog 4-20 mA control output.

1212 13

13– Analog 0-20 mA retransmission of PV.

1313 14

14– Analog 4-20 mA retransmission of PV.

1414 15

15– Analog 0-20 mA retransmission of SP.

1515 16

16– Analog 4-20 mA retransmission of SP.

1616

I/O 6 – Digital Input

0000 - Disable the alarm; 6666 - Digital input, manual/automatic selection:

Closed = manual control; Open = automatic control

7777 – Start/Stop control (“RvN

RvN”: YES / no).

RvNRvN

Closed = outputs enabled Open = outputs disabled

8888 – Invalid selection; 9999 - 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

1010

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.

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.

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

7.2 in this manual.

NOVUS AUTOMATION

RvN”: YES / no).

RvNRvN

• 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

Disabled

Sensor

Break

(input Error)

Event Alarm

(ramp and

Soak)

Detection

resistance

Low Alarm

High Alarm

LOW

Differential

HIGH

Differential

fail

rfail

rfailrfail

off

offoff

ierr

ierrierr

rsrs

lolo

kiki

difl

difldifl

difk

difkdifk

dif

difdif

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

Detects a heater broken condition

positive SPAn

SV - SPAn

positive SPAn

Table 3 – Alarm functions

ACTION

soak program.

negative SPAn

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

• 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 values is above the value defined in the alarm Setpoint.

• Differential (or Band)

In this function, the parameters “SPA1

SPA1”, “SPA2

SPA1SPA1

SPA2” represent the PV

SPA2SPA2

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.

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