NOVUS N2000S Universal Process Controller User Guide

NOVUS N2000S Universal Process Controller

Product Information

The N2000S Controller is a versatile instrument designed for process control and automation. It features a frontal panel with various indicators and keys for easy operation and parameter programming. The controller ensures personal safety and prevents damage to the instrument or system by following the provided safety instructions.

Safety Summary
The following symbols are used on the equipment and throughout the document to draw 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 in the manual must be observed.

Operation
The controller’s frontal panel, as shown in Figure 1, consists of various indicators and keys:

• PV / Programming Display: Shows the Process Variable (PV) value and parameter mnemonic in operating or programming mode.
• SP / Parameters Display : Shows the Setpoint (SP) 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 an automatic tuning operation.
• MAN Indicator : Indicates that the controller is in manual control mode.
• RUN Indicator: Indicates that the controller is active with control and alarm outputs enabled.
• OUT Indicator: Constantly on when the analog output (0-20 mA or 4-20 mA) is configured for control mode.
• A1, A2 Indicators: Indicates respective alarm status.
• A3 Indicators: Indicates valve (I/O3) opening output status.
• A4 Indicators: Indicates valve/damper (I/O4) closing output status.
• PROG key: Used to show the controller’s programmable parameters.
• BACK key: Used to return to the previous parameter shown in the parameter display.
• Increase and Decrease keys: Used to change parameter values.
• Auto/Man key: Special function key to switch control mode between Automatic and Manual.
• Programmable Function Key: Used to perform special functions described in the KEY FUNCTIONS.

Upon turning on the controller, the firmware version is displayed for 3 seconds. After that, the controller operates normally displaying PV and SV values in the upper and lower displays respectively. Outputs are enabled at this moment as well.

The relay associated with the valve closing is activated during the time required for the complete valve closure, as specified by parameter Ser.t. This ensures the controller starts operating with a known reference.

Product Usage Instructions

Accessing Configuration Cycles:
The N2000S Controller has different cycles for operation, tuning, programs, alarms, input configuration, I/O, and calibration. The operation cycle is freely accessed, while other cycles require a keystroke combination:

To access other cycles:

1. Press the (BACK) and (PROG) keys simultaneously.

To navigate within a cycle:

• Use the (BACK) or (PROG) keys to move forward or backward through the parameters.

To return to the operation cycle:

• Press the (BACK) key multiple times until all parameters of the current cycle have been shown.

Note: All parameters set up are stored in a protected memory. Changed values are automatically saved when the user goes to the next parameter. The Setpoint (SP) value is saved when parameters are changed or at every 25 seconds.

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).

• Sensors break protection in any
• Universal input for multiple sensors without changing
• Potentiometer input for current position
• Auto-tuning of PID
• Relay control
• Automatic/Manual “bumpless” transfer.
• 2 alarm outputs with the following functions: minimum, maximum, differential (deviation), open sensor and
• 2 alarm
• 4-20 mA or 0-20 mA analog output for Process Variable (PV) or Setpoint (SP)
• 4 function digital
• Ramp and soak with 7 concatenable 7-segment
• RS485 serial communication; RTU MODBUS
• Configuration
• Dual

OPERATION

The controller frontal panel is shown in Figure 1 :

• 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    Decrease keys: Key used to change the parameter values.
• 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   Se r . 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, ).
• 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:

Reserved access

3 − Programs
4 − Alarms
5 − Input configuration
6 − I/O
7 − Calibration

Table 1: Configuration cycles
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.

CONFIGURATION / RESOURCES

INPUT TYPE SELECTION
The input type must be selected by the user in the Type parameter and using the keyboard.

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

0-50 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 2: 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:

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:

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:

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 = 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

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.

POTENTIOMETER INPUT

The potentiometer of valve position can be seen in the controller. It must be 10 kW and connections must be as Figure 7 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 alarms in specific segments of the program (see ALARM CYCLE).

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.

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.

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

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 mayvary 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 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 W 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:

and off ( RvN : YES / no ).

Closed = Outputs enabled.

Open = Control output 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.

---|---

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 on 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:

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.

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
The figures below show how connections are made. If extension of the thermocouple is required, proper compensation cables should be provided.

4-20 mA
Figure 6 shows the 4-20 mA current signals wiring.

0-5 VDC
Figure 7 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.

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)

| 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.

---|---
SV Indication

(Green)

PV Indication

(Red)

| 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.

---|---
MV Indication

(Green)

Pr n

Pr ogram

n umber

| Program execution. Selects the ramp and soak program to be executed.

0 Does not run any program.

| 1, 2, 3, Respective program.

4, 5, 6

| 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

A uto- tun e

| Auto-tune of PID parameters. See PID PARAMETERS AUTO-TUNING.

YES Run auto-tune.

NO Does not run auto-tune.

---|---
Pb

P roportional b and

| 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

HYSt eresis

| Control hysteresis.

Hysteresis value for ON/OFF control. This parameter is shown only for ON/OFF control (Pb=0).

Ir

i ntegral r ate

| Integral rate. Value of I term of PID control in repetitions per minute (Reset).

Adjustable between 0 and 24.00. Presented if proportional band ¹ 0.

dt

d erivative t ime

| Derivative time. Value of D term of the PID control in seconds.

Adjustable between 0 and 250 s. Presented if proportional band ¹ 0.

sert

Ser vo t ime

| Time of servo excursion, from totally open to totally closed.

Programmable from 15 to 600 s.

serr

Ser vo r esolution

| Control resolution. Determines the dead band of servo activation.

Very low values (<1 %) make the servo “nervous”

serF

Ser vo f ilter

| 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

Act ion

| Control action. Only in the automatic control mode.

rE Reverse action. Usually used for heating.

dir Direct action. Usually used for cooling.

Sp.a1 Sp.a2

S et P oint of

A larm

| Alarm SP. Value that defines the trigger point of alarms programmed with the Lo or k i functions.

In alarms programmed with the function Differential

this parameter defines the deviation.

It is not used in other alarm functions.

---|---

PROGRAM CYCLE

tbas

t ime bas e

| 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

P rogram n umber

| Program editing. Selects the ramp and soak program to be edited in the next screens of this cycle.

Ptol

P rogram tol erance

| 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

P rogram S et P oint

| Program SPs. From 0 to 7.

Set of 8 SP values that define the ramp and soak program profile.

Pt1 Pt7

P rogram t ime

| Program segments time. From 1 to 7.

It defines the duration time (in seconds or minutes) of each segment of the program.

Pe1 Pe7

P rogram e vent

| Event alarms. From 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.

Lp

L ink to

P rogram

| 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

Fu nction of

| ****

Alarm function. Defines the alarm functions according to options shown in Table 3.

---|---
A larm|
bla1 bla2| Alarm initial blocking. Alarm initial blocking function for alarms 1 to 4

YES Enables initial blocking.

NO Disables initial blocking.

bl ocking for

A larms

xya1 xya2

Hy steresis of

A larms

| Alarms hysteresis. 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.

A1t1

A larm 1

t ime 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

Al arm 1

t ime 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

Al arm 2

t ime 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

Al arm 2

| Alarm 2 time 2. Defines the period in which alarm 2 will be off after being activated. Set zero to disable this function.
t ime 2| Table 4 shows the advanced functions one can obtain with timer.

INPUT CONFIGURATION CYCLE

Type

tYPE

| Input type. 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

d ecimal P oint Po sition

| 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 ). Invalid for inputs 16, 17, 18 and 19.

Offs

oFFS et

| Offset for PV.

Offset value to be added to the PV to compensate sensor error. Default value: zero.

Adjustable between -400 and 400.

Spll

S et P oint L ow L imit

| 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

S et P oint H igh L imit

| 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.

Pot

Pot entiome- ter

| 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

| Communication Baud Rate. Available with RS485.

0 1200 bps

1 2400 bps

2 4800 bps

3 9600 bps

4 19200 bps

Addr

Addr ess

| Communication address.

With RS485, number that identifies the controller in the communication between 1 and 247.

I/O CYCLE (INPUTS AND OUTPUTS)

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.

RAMP AND SOAK PROGRAM
Feature that allows to elaborate 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:

To execute a profile with fewer segments, set 0 (zero) for the time intervals that follow the last segment to be executed.

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.

EVENT ALARM
This function makes it 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

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
• Set control mode to automic.
• Enable program execution at the rS screen.
• Start the control at the rvn

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
• Select automatic mode operation at the Avto
• Select a value different form zero for the proportional
• Disable the Soft Start
• 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
• Enable auto-tuning at the Atvn
• Enable the control at the rvn

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.

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:

1. Set up the input type to be lower limit
2. Set the lower and upper limits of extreme values for the input type.
3. Apply a signal to the input that corresponds to a known value and a little bit over the lower limit of the
4. Access the inLC By using the   and    keys, select the expected value that will appear in the parameters display.
5. Apply a signal to the input that corresponds to a known value and a little bit under the lower limit of the
6. Access the inLC By using the   and    keys, select the expected value that will appear in the parameters display.
7. Repeat c to f up to no new adjustment is

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)
2. Connect a mA meter in the analog control
3. Disable Auto-Tune and Soft Start
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 0%.
5. Set no for the manual mode avto
6. Enable the control ( YES ) at the rvn
7. Program MV in 0.0 % in the operation
8. Select the ovLC 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
10. Select the ovxC Use the  and   keys to obtain the 20 mA.
11. Repeat 7 to 10 up to no new adjustment is

POTENTIOMETER CALIBRATION

1. Set up the input type to be capilerated.
2. Set the lower and upper limits of indication for the extremes of the input
3. Adjust the potentiometer with the minimum
4. Access the PotL By using the    and  keys, select 0.0 in the parameters display.
5. Adjust the potentiometer with the maximum
6. Access the Potk By using the and   keys, select 100.0 in the parameters display.
7. 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.

FEATURES

Signals compliant to the RS485 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.

RS485 signals are:

Terminal 27

Table 7: RS485

SERIAL COMMUNICATION CONFIGURATION
You must configure 2 parameters to use the serial:

• 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

Table 8: Problems

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. 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 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 MΩ
• 0-5 V: >1 MΩ
• 4-20 mA: 15 Ω (+2 Vdc @ 20 mA)
• Pt100 measurement: 3-wire circuit, cable resistance compensation (α=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 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
• 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

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