novus N1200 Controller Instruction Manual
- June 6, 2024
- Novus
Table of Contents
N1200 Controller
N1200 Controller
UNIVERSAL CONTROLLER INSTRUCTIONS MANUAL V2.0x J
SAFETY ALERTS
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:
Read the manual thoroughly before installing and operating the
equipment.
CAUTION OR DANGER: 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
The N1200 is an extraordinarily versatile process controller. It holds in one
single instrument all the main features needed for the vast majority of
industrial processes. It accepts in a single model virtually all the sensors
and signals used in the industry and provides the main output types required
for the operation of diverse processes.
Configuration can be performed either directly on the controller or via the
USB interface once QuickTune software has been installed on the computer to be
used. Once connected to USB, the device will be recognized as a serial
communication (COM) port operating with Modbus RTU protocol.
Through the USB interface, even if disconnected from the power supply, the
configuration performed in a piece of equipment can be can be saved in a file
and repeated in other pieces of equipment that require the same configuration.
It is important that the users read carefully this manual before using the
controller. Verify if the release of this manual matches the instrument
version (the firmware version is shown when the controller is energized). The
N1200 main characteristics are:
· Multi-sensor universal input; · Protection for open sensor in any condition;
· Relay, 4-20 mA and logic pulse control outputs all available in
the standard model; · Self-tuning of PID parameters; · Automatic / Manual
function with “bumpless” transfer; · Four modes of independents alarms, with
functions of minimum,
maximum, differential (deviation), open sensor and event; · Timer functions
that can be associated to the alarms; · Retransmission of PV or SP in 0-20 mA
or 4-20 mA; · Input for remote setpoint; · Digital input with 5 functions; ·
Programmable soft-start; · 20 setpoint profile programs with 9 segments each,
with the
ability to be linked together for a total of 180 segments; · Password for
parameters protection; · Universal power supply.
NOVUS AUTOMATION
CONFIGURATION / FEATURES
INPUT TYPE SELECTION Select the input type (in parameter “tYPE”) from Table 1 below.
TYPE J K T N R S B E
Pt100 0-20 mA 4-20 mA 050 mV 0-5 Vdc 0-10 Vdc
CODE
Tc j Tc k Tc t Tc n Tc r Tc s Tc b Tc e
Pt L0.20 L4.20 L0.50 L0.5 L0.10 ln j
RANGE OF MEASUREMENT Range: -110 to 950 °C (-166 to 1742 °F) Range: -150 to
1370 °C (-238 to 2498 °F) Range: -160 to 400 °C (-256 to 752 °F) Range: -270
to 1300 °C (-454 to 2372 °F) Range: -50 to 1760 °C (-58 to 3200 °F) Range: -50
to 1760 °C (-58 to 3200 °F) Range: 400 to 1800 °C (752 to 3272 °F) Range: -90
to 730 °C (-130 to 1346 °F) Range: -200 to 850 °C (-328 to 1562 °F)
Linear Signals Programmable indication from -1999 to 9999.
4-20 mA
NON LINEAR
Ln k ln t ln n ln r ln s ln b ln E Ln.Pt
Non Linear Analog Signals Indication range depends on the selected sensor
Table 1 – Input types
Note: All input types are factory calibrated.
CONFIGURATION OF OUTPUTS, ALARMS AND DIGITAL INPUTS
The controller input and output channels (I / O) can assume multiple
functions: control output, digital input, digital output, alarm output,
retransmission of PV and SP. These channels are identified as I / O 1, I / O
2, I / O 3, I / O 4 and I / O 5.
The basic controller model comes loaded with the following features:
I / O 1 output to Relay SPST-NA; I / O 2 output to Relay SPST-NA; I / O 5
current output, digital output, digital input;
Optionally, other features can be added, as shown under the item
“Identification” in this manual:
– 3R: I / O3 with output to SPDT relay;
– DIO: I / O3 and I / O4 as digital input and output channels;
– HBD: Heater break detect;
– 485: Serial Communication;
1 / 12
The function to be used in each channel of I/O is defined by the user in accordance with the options shown in the Table 2.
FUNCTION OF I/O Without Function Output of Alarm 1 Output of Alarm 2 Output of Alarm 3 Output of Alarm 4 LBD – Loop break detection Control Output (Relay or Digital Pulse) Automatic / Manual mode selection Run / Stop mode selection Remote SP selection Setpoint profile program HOLD (Freezes program execution) Setpoint Profile Program 1 selection 0 to 20 mA control output selection 4 to 20 mA control output selection Retransmission of PV in 0 to 20 mA Retransmission of PV in 4 to 20 mA Retransmission of SP in 0 to 20 mA Retransmission of SP in 4 to 20 mA
CODE
OFF A1 A2 A3 A4 Lbd CTRL
mAN RVN RSP
TYPE OF I/O Output Output Output Output Output Output Output
Digital Input Digital Input Digital Input
KPRG
Digital Input
PR 1 (.0.20 (.4.20 P.0.20 P.4.20 S.0.20 S.4.20
Digital Input Analogical Output Analogical Output Analogical Output Analogical Output Analogical Output Analogical Output
Table 2 – Types of functions for the I/O channels
During the configuration of the I/O channels, only the valid options for each
channel will be shown on the display. These functions are described below: ·
off – Without function
The I/O channel programmed with code off will not be used by the controller.
Although without function, this channel is available through the serial
communication as digital I/O (command 5 MODBUS).
· a1, a2, a3, a4 Alarm Outputs
The selected channel can be used as output to Alarms 1 to 4. Defines that the
programmed I/O channel acts as alarm outputs. Available for all the I/O
channels.
· Lbd Loop Break Detector function.
Assigns the output of the Loop Break Detector alarm to an I/O channel.
Available to all I/O channels.
· (trL PWM Control Output
Defines the I/O channel to be used as the PWM control output (relay or digital
pulse). Available for all the I/O channels. The digital pulse is available on
I/O5 (standard) or on I/O3 and I/O4 (when the DIO optional is installed).
Check the specifications of each channel.
· mAn – Digital Input with Auto/Manual function
Defines the I/O channel as Digital Input with the function of switching the
control mode between Automatic and Manual. Available on I/O5 (standard) or on
I/O3 and I/O4 (when the DIO optional is installed).
Closed = Manual control; Open = Automatic control · rvn – Digital Input with
RUN function
Defines channel as Digital Input with the function of enabling/disabling the
control and alarm outputs (“RvN”: YES / no). Available for I/O5 or I/O3 and
I/O4, when installed.
Closed = outputs enabled Open = control and alarms output shut off
· rsp – Digital Input with Remote SP function
Defines channel as Digital Input with the function of selecting the remote SP
as the control setpoint. Available for I/O5 or I/O3 and I/O4, when available.
Closed = remote SP Open = uses main SP
· kprg – Digital Input with Hold Program function
Defines channel as Digital Input with the function of commanding the execution
of the selected setpoint profile program. Available for I/O5 or I/O3 and I/O4,
when available.
NOVUS AUTOMATION
Controller N1200
Closed = Enables execution of the program Open = Interrupts (freezes)
execution of the program
Note: Even when the execution of the program is interrupted, the control
output remains active and controlling the process at the point (Setpoint) of
interruption. The program will resume its normal execution starting from this
same point when the digital input is closed.
· Pr 1 – Digital Input with function to Execute Program 1 Defines the IO
channel as Digital Input with the function of commanding the execution of the
setpoint profile program 1. Available for I/O5 or I/O3 and I/O4, when
available. Useful function for switching between the main setpoint and a
secondary one defined by the program 1.
Closed = selects program 1; Open = selects main setpoint · (.0.20 0-20 mA
Control Output Available for I/O 5 only, defines the channel as a 0-20 mA
control output. · (.4.20 – 4-20 mA Control Output Defines the channel as a
4-20 mA control output. · P.0.20 0-20 mA PV retransmission Available for I/O
5 only, configures the channel to retransmit the values of PV in 0-20 mA. ·
P.4.20 – 4-20 mA PV retransmission Available for I/O 5 only, configures the
channel to retransmit the values of PV in 4-20 mA. · s.0.20 0-20 mA SP
(Setpoint) retransmission Available for I/O 5 only, configures the channel to
retransmit the values of SP in 0-20 mA. · s.4.20 4-20 mA SP (Setpoint)
retransmission Available for I/O 5 only, configures the channel to retransmit
the values of SP in 0-20 mA.
CONFIGURATION OF ALARMS The controller has 4 independent alarms. These alarms
can be configured to operate with nine different functions, as shown in Table
3. · off Alarms turned off. · ierr Open Sensor alarms – (Loop Break) The
open sensor alarm acts whenever the input sensor is broken or badly connected.
· rs Program Event Alarm Configures the alarm to act in (a) specific
segment(s) of the programs of ramps and baselines to be created by the user. ·
Rfai1 Burnt-out Resistance Alarm – (Heat Break) Signals that the heating
element has broken up. This alarm function requires the accessory Current
transformer CT1. Details for use of the option “burnt-out resistance” are
found in the specific documentation that accompanies the product whenever this
option is requested. · lo Alarm of Absolute Minimum Value Triggers when the
value of measured PV is below the value defined for alarm Setpoint. · ki
alarm of Absolute Maximum Value Triggers when the value of measured PV is
above the value defined for alarm Setpoint. · dif Alarm of Differential
Value In this function the parameters “SPA1”, “SPA2″,” SPA3″ and “SPA4”
represent the Deviation of PV in relation to the SP. Using the Alarm 1 as
example: for Positive SPA1 values, the Differential alarm triggers when the
value of PV is out of the range defined for:
(SP SPA1) to (SP + SPA1) For a negative SPA1 value, the Differential alarm
triggers when the value of PV is within the range defined above:
2 / 12
· difl Alarm of Minimum Differential Value It triggers when the value of PV
is below the defined point by:
(SP SPA1)
Using the Alarm 1 as example.
· difk Alarm of Maximum Differential Value Triggers when the value of PV is
above the defined point by:
(SP + SPA1)
Using the Alarm 1 as example.
SCREEN TYPE
ACTUATION
Off Inoperative Output is not used as alarm.
Ierr
Open sensor (input Error)
Activated when the input signal of PV is interrupted, out of the range limits or Pt100 in short-circuit.
Rs Event (ramp and Activated in a specific segment of program.
Soak)
rfail Resist. burnt out Signals a failure in the heating element.
(resistance fail)
Lo Ki Dif
Difl Difk
Minimum value (Low)
Maximum value (High)
Differential (differential)
PV
SPAn PV
SPAn
PV
PV
SV – SPAn SV SV + SPAn
SV + SPAn SV SV – SPAn
Positive SPAn
Negative SPAn
Minimum Differential (differential Low)
Positive SPAn
PV
SV – SPAn
SV
Maximum
differential
PV
(differential High) SV SV + SPAn
Positive SPAn
Negative SPAn
PV
SV
SV – SPAn
PV SV + SPAn SV
Negative SPAn
Table 3 Alarm Functions
Where SPAn refers to Setpoints of Alarm “SPA1”, “SPA2”, “SPA3” and “SPA4”.
Important note: Alarms configured with the ki, dif, and difk functions also
trigger their associated output when a sensor fault is identified and signaled
by the controller. A relay output, for example, configured to act as a High
Alarm (ki), will operate when the SPAL value is exceeded and also when the
sensor connected to the controller input is broken.
ALARM TIMER MODES
The controller alarms can be configured to perform 3 timer modes:
· One pulse with defined duration;
· Delayed activation;
· Repetitive pulses; The illustrations in Table 4 show the behavior of the
alarm output for various combinations of times t1 and t2. The timer functions
can be configured in parameters A1t1, A1t2, A2t1, A2t2, A3t1, A3t2, A4t1 and
A4t2.
OPERATION T 1
T 2
ACTION
Normal Operation
0
Alarm
0
Output
Alarm Event
Activation for a defined time
1
to
6500
s
0
Alarm
Output
T1
Alarm Event
Activation with delay
0
Alarm
1 to 6500 s Output
T2
Alarm Event
Intermittent Activation
1 to 6500 s 1 to 6500 s
Alarm Output
T1
T2
T1
Alarm Event
Table 4 Temporization Functions for the Alarms
NOVUS AUTOMATION
Controller N1200
The LEDs associated to the alarms will light when the alarm condition is
recognized, not following the actual state of the output, which may be
temporarily OFF because of the temporization.
INITIAL BLOCKING OF ALARM The initial blocking option inhibits the alarm from
being recognized if an alarm condition is present when the controller is first
energized (or after a transition from run YES NO). The alarm will be enabled
only after the occurrence of a non-alarm condition followed by a new
occurrence for the alarm. The initial blocking is useful, for instance, when
one of the alarms is configured as a minimum value alarm, causing the
activation of the alarm soon upon the process start-up, an occurrence that may
be undesirable. The initial blocking is disabled for the sensor break alarm
function.
EXTRACTION OF THE SQUARE ROOT With this feature enabled the controller uses
for display and control a value that corresponds to the square root of the
applied input signal. Available only for the inputs belonging to the group of
linear analogic signals: 0-20 mA, 4-20 mA, 0-50 mV, 0-5 V and 0-10 V.
ANALOG RETRANSMISSION OF PV AND SP The analog output, when not used for
control purposes, is available for retransmitting the PV and SP values in 0-20
or 4-20 mA. This analog output is electrically isolated from other inputs and
outputs. The analog output signal is scalable, with the output range defined
by the values programmed in the parameters “rtLL” and “rtkL”. To obtain a
voltage output, the user must install a resistor shunt (550 max.) to the
current output terminals (terminals 7 and 8). The actual resistor value
depends on the desired output voltage span. There is no electrical isolation
between serial communication (RS485) and channel I/O5.
SOFT START The soft-start feature avoids abrupt variations in the power
delivered to the load regardless of the system power demand. . This is
accomplished by defining a limiting ramp for the control output. The output is
allowed to reach maximum value (100 %) only after the time programmed in the
soft-start parameter has elapsed. The Soft-start function is generally used in
processes that require slow start-up, where the instantaneous application of
100 % of the available power to the load may cause damages to parts of the
system. Notes: 1- Function only valid when in PID control mode. 2- Setting 0
(zero) in the time interval, the function is disabled.
REMOTE SETPOINT The controller can have its Setpoint value defined by an
analog, remotely generated signal. This feature is enabled through the
channels I/O3, I/O4 or I/O5 when configured as digital inputs and configured
with the function rsp (Remote SP selection) or through the parameter E.rsp.
The remote setpoint input accepts the signals 0-20 mA, 4-20 mA, 0-5 V and 0-10
V. For the signals of 0-20 and 4-20 mA, a shunt resistor of 100 is required
between terminals 9 and 10, as shown in Figure 4c.
CONTROL MODE The controller can operate in two different manners: Automatic
mode or Manual mode. In automatic mode the controller defines the amount of
power to be applied on the process, based on defined parameters (SP, PID,
etc.). In the manual mode the user himself defines this amount of power. The
parameter “(trl” defines the control mode to be adopted.
3 / 12
PID AUTOMATIC MODE
For the Automatic mode, there are two different strategies of control: PID
control and ON/OFF control.
PID control has its action based on a control algorithm that takes into
account the deviation of PV with respect to SP, the rate of change of PV and
the steady state error.
On the other hand, the ON/OFF control (obtained when Pb=0) operates with 0 %
or 100 % of power, when PV deviates from SP.
The determination of the PID parameters (Pb, Ir and Dt) is described in the
item DETERMINATION OF PID PARAMETERS of this manual.
LBD – LOOP BREAK DETECTION ALARM
The parameter defines a time interval, in minutes, within which the PV is
expect to react to a control output signal. If the PV does not react properly
within the time interval configured in lbd.t, the controller interprets this
as a control loop break and signals this occurrence in the display.
A LBD event may be sent to any I/O channel. Simply configure the LDB function
to the desired I/O channel: the selected output will be activated when a LDB
condition is detected. When the lbd.t parameter is programmed with 0 (zero),
the LDB function is disabled.
The LDB is useful in system supervision and troubleshooting, allowing early
detection of problems in the actuator, power source or load.
HBD – HEATER BREAK DETECTION
Available in the products identified with the suffix HBD. Visit our website
for further information www.novusautomation.com.
SAFE OUTPUT VALUE WITH SENSOR FAILURE
This function defines an output value (user defined) to be assigned to the
control output in the event of a sensor failure.
When the input sensor is identified as broken, the controller forcing MV to
assume the user configured value in the 1E.ov parameter.
When the parameter 1E.ov is configured with 0.0 (zero) value, this function is
disabled and the control output is simply turned off upon input sensor error.
USB INTERFACE
The USB interface is used to CONFIGURE, MONITOR or UPDATE the controller
FIRMWARE. The user should use QuickTune software, which offers features to
create, view, save and open settings from the device or files on the computer.
The tool for saving and opening configurations in files allows the user to
transfer settings between devices and perform backup copies.
For specific models, QuickTune allows to update the firmware (internal
software) of the controller via the USB interface.
For MONITORING purposes, the user can use any supervisory software (SCADA) or
laboratory software that supports the MODBUS RTU communication over a serial
communication port. When connected to a computer’s USB, the controller is
recognized as a conventional serial port (COM x).
The user must use QuickTune software or consult the DEVICE MANAGER on the
Windows Control Panel to identify the COM port assigned to the controller.
The user should consult the mapping of the MODBUS memory in the controller’s
communication manual and the documentation of the supervision software to
start the MONITORING process.
Follow the procedure below to use the USB communication of the device:
1. Download QuickTune software from our website and install it on the
computer. The USB drivers necessary for operating the communication will be
installed with the software.
2. Connect the USB cable between the device and the computer. The controller
does not have to be connected to a power supply. The USB will provide enough
power to operate the communication (other device functions may not operate).
3. Run the QuickTune software, configure the communication and start the
device recognition.
Controller N1200
The USB interface IS NOT SEPARATE from the signal input (PV) or the
controller’s/indicator’s digital inputs and outputs. It is intended for
temporary use during CONFIGURATION and MONITORING periods. For the safety of
people and equipment, it must only be used when the piece of equipment is
completely disconnected from the input/output signals. Using the USB in any
other type of connection is possible but requires a careful analysis by the
person responsible for installing it. When MONITORING for long periods of time
and with connected inputs and outputs, we recommend using the RS485 interface,
which is available or optional in most of our products.
INSTALLATION / CONNECTIONS
The controller must be fastened on a panel, following the sequence of steps
described below: · Prepare a panel cut-out according Specifications; · Remove
the mounting clamps from the controller; · Insert the controller into the
panel cut-out; · Slide the mounting clamp from the rear to a firm grip at the
panel.
RECOMMENDATIONS FOR THE INSTALLATION · All electrical connections are made to
the screw terminals at the
rear of the controller. They accept wire sizes from 0.5 to 1.5 mm2 (16 to 22
AWG). The terminals should be tightened to a torque of 0.4 Nm (3.5 lb in) · To
minimize the pick-up of electrical noise, the low voltage DC connections and
the sensor input wiring should be routed away from high-current power
conductors. If this is impractical, use shielded cables. In general, keep
cable lengths to a minimum. · All electronic instruments must be powered by a
clean mains supply, proper for instrumentation. · It is strongly recommended
to apply RC’S FILTERS (noise suppressor) to contactor coils, solenoids, etc. ·
In any application it is essential to consider what can happen when any part
of the system fails. The controller features by themselves cannot assure total
protection.
ELECTRICAL CONNECTIONS The controller’s internal circuits can be removed
without undoing the connections on the back panel. The controller complete set
of features is drawn in Figure 1. The features loaded in a particular unit are
shown on its label
Figure 1 – Connections of the back panel
NOVUS AUTOMATION
4 / 12
Power Supply Connections
Controller N1200
Digital Input Connections Figures 5a and 5b show switches driving I/O 3 and
I/O 5. The same scheme applies to I/O 4
Observe the power requirement for the unit. of required power
supply
Figure 2 Power supply connections
Input Connections
· Thermocouple (T/C) and 0-50 mV
The Figure 3a indicates the wiring for the thermocouple and 0-50 mV signals.
If the thermocouple wires need to be extended, use appropriate compensation
cables.
· RTD (Pt100):
Figure 3b shows the Pt100 wiring, for 3 conductors. For proper cable length
compensation, use conductors of same gauge and length). For 4-wires Pt100,
leave one conductor disconnected at the controller. For 2-wire Pt100, short-
circuit terminals 11 and 12.
T/C, 0-50mV
Pt100
Figure 3a – Connection of T/C, Figure 3b – Connection of three
0-50 mV
wire Pt100-3
· 4-20 mA:
The connections for current signals 4-20 mA must be carried-out according to
Figure 4a.
Figure 5a I/ O3 a Digital Input Figure 5b I/O5 a Digital Input
Connection of Alarms and Outputs The I/O channels, when configured as outputs,
must have their load limit capacities observed, according to the product
specifications.
Figure 6a I/ O3 or I/O4 with output pulse for SSR.
Figure 6b I/O5 with output pulse for SSR.
I/O3, I/O4 and I/O5 can also be configured as digital outputs (I/O3 and I/O4 provide a 5 Vdc output signal whereas I/O5 a 12 Vdc signal). An example of usage is shown in Figure 6a for the I/O3 and in Figure 6b for the I/O5. I/O5 is electrically isolated from the sensor input
OPERATION
The controller’s front panel, with its parts, can be seen in the Figure 7:
4-20mA
Figure 4a – Current connection Figure 4b – Connection for 5 V
4-20 mA
and 10 V
· 5 V and 10 V Refer to Figure 4b for connecting voltage signals.
Remote Setpoint
Feature available in the controller’s terminals 9 and 10. When the Remote SP
input signal is 0-20 mA or 4-20 mA, an external 100 shunt resistor of must be
connected to terminals 9 and 10 as indicated in Figure 4c.
Figure 4c – Connection for remote SP
NOVUS AUTOMATION
Figure 7 – Identification of the parts referring to the front panel
Display of PV/Programming: Displays the current value of PV (Process
Variable). When in configuration mode, it shows the parameters names. Display
of SP/Parameters: Displays the value of SP (Setpoint). When in configuration
mode, it shows the parameters values. COM indicator: Flashes to indicate
communication activity in the RS485 interface. TUNE indicator: Stays ON while
the controller is in tuning process. MAN indicator: Signals that the
controller is in the manual control mode. RUN indicator: Indicates that the
controller is active, with the control output and alarms enabled. OUT
indicator: For relay or pulse control output; it reflects the actual state of
the output. If an analog output is assigned for control, the OUT indicator
lights continuously. A1, A2, A3 and A4 indicators: signalize the occurrence of
alarm situation. P P Key (Program key): used to walk through the menu
parameters.
Back Key: used to retrocede parameters. Increment key and – Decrement key:
allow altering the values of the parameters. When the controller is powered
on, its firmware version is presented for 3 seconds, after which the
controller starts normal operation. The values of PV and SP are displayed and
the outputs are enabled.
5 / 12
In order to operate appropriately, the controller needs a configuration that
is the definition of each one of the several parameters presented by the
controller. The user must be aware of the importance of each parameter and for
each one determine a valid condition or a valid value.
Note: Since many parameters depend on the input type chosen, it is recommended
that the parameter TYPE be the first one to be configured.
The parameters are grouped in levels according to their functionality and operation easiness. The 7 levels of parameters are:
LEVEL 1 – Operation 2 – Tuning 3 – R&S Programs 4 – Alarms 5 – Scale 6 – I/Os 7 – Calibration
ACCESS Free access
Reserved access
Table 5 Cycles of Parameters
The parameters in the operation level have easy access through the key P . The access deeper levels use the combination of keys:
(BACK) and P (PROG) pressed simultaneously
Press P to advance or to retrocede parameters within a level. At the end of
each level, the controller returns to the operation level. Keep pressing the P
key to move fast forward in the level.
Alternatively, the controller returns to the operation level after pressing
the key for 3 seconds
All configuration parameters are stored in protected memory. The values are
saved when the keys P or are pressed after changing a parameter value. The
value of SP is saved upon pressing the P key or every 25 seconds.
Note: It is recommended to disable/suspend the control (rvn = NO)
whenever it is necessary to change the device settings.
DESCRIPTION OF THE PARAMETERS
CYCLE OF OPERATION
To access the operation level parameters, press P until the desired parameter
is displays.
PV Indication (Red Screen)
SP Indication (Green Screen)
PV and SP indication The upper display shows the current value of PV. The lower display shows the control SP value.
(trl
Control
Control Mode:
avto – Means automatic control mode. Man Means manual control mode.
(bumpless transfer between automatic and manual control modes).
PV Indication (Red Screen)
MV Indication (Green Screen)
MANIPULATED VARIABLE VALUE (MV): 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 manually changed by the and keys. When
in auto mode the MV value can only be viewed.
To distinguish the MV display from the SP display, the MV is shown flashing
intermittently.
E pr
Enable Program
Execution of Program – Selects the ramp and soak profile program to be
executed.
0 – does not execute program 1 to 20 number of the program to be executed
With enabled outputs (RUN = YES), the program starts right after the program
is selected.
NOVUS AUTOMATION
Controller N1200
p.seg t.seg rvn
Screen for indication only. When a ramp and soak program is active, this
parameter shows the number of the segment under execution, from 1 to 9.
Screen for indication only. When a ramp and soak program is in execution, it
shows the remaining time to the end of the current segment, in units of time
configured in the Pr.tb parameter.
Enables control outputs and alarms.
YES – Outputs enables. NO – Outputs not enabled.
CYCLE OF TUNING
Atvn
Auto-tune
pb
Proportional Band
Defines the control strategy to be taken:
off Turned off. (no PID tuning) Fast Fast automatic tuning. Full More
accurate automatic tuning. self Precise + auto – adaptive tuning Ralf
Forces one new precise automatic precise + auto – adaptive tuning. T9kt –
Forces one new precise automatic + auto – adaptive tuning when Run = YES or
controller is turned on.
PROPORTIONAL BAND – Value of the term P of the control mode PID, in percentage
of the maximum span of the input type. Adjust of between 0 and 500.0 %. Select
zero for ON/OFF control.
ir INTEGRAL RATE – Value of the term I of the PID
Integral Rate algorithm, in repetitions per minute (Reset). Adjustable between
0 and 99.99.
Displayed only if proportional band 0.
dt DERIVATIVE TIME – Value of the term D of the
Derivative Time control mode PID, in seconds. Adjustable between 0 and 300.0
seconds.
Displayed only if proportional band 0.
(t
Cycle Time
Pulse Width Modulation (PWM) period in seconds. Adjustable between 0.5 and
100.0 seconds.
Displayed only if proportional band 0.
kyst
Hysteresis
CONTROL HYSTERESIS (in engineering. units): This parameter is only shown for ON / OFF control (Pb=0). Adjustable between 0 and the measurement input type span.
ACt
Action
CONTROL ACTION: For Auto Mode only.
re Control with reverse Action. Appropriate for heating. Turns control output
on when PV is below SP.
dir Control with direct Action. Appropriate for cooling. Turns control output
on when PV is above SP.
Lbd.t
Loop break detection time.
bias
Time interval for the LBD function. Defines the maximum interval of time for
the PV to react to a control command. In minutes
BIAS: Offset for MV (manual reset). Range: -100 % to +100 %.
Allows adding a percentage value between -100 % and +100 %. to the MV control
output
The value 0 (zero) disables the function.
ovll
Output Low Limit
Lower limit for the control output – Minimum percentage value assumed by the
control output when in automatic mode and in PID.
Typically configured with 0 %. Default value: 0 %
6 / 12
ovkl
Output High Limit
Upper limit for the control output – Maximum percentage for the control output when in automatic mode and in PID. Typically configured with 100 %. Default value: 100 %
sfst
Soft Start
Soft Start Function Time in seconds during which the controller limits the MV value progressively from 0 to 100 %. It is enabled at power up or when the control output is activated. If in doubt set zero (zero value disables the Soft start function).
Sp.a1 Sp.a2 Sp.a3 Sp.a4
ALARM SETPOINT: Tripping point for alarm 1, 2, 3 and 4. Value that defines the
point of activation for the programmed alarms with the functions “Lo” or “ki”.
For the alarms configured with Differential type functions, this parameter
defines deviation (band).
Not used for the other alarm functions.
CYCLE OF PROGRAMS
Pr.tb Defines the time base that will be used by all Ramp
Program time & Soak programs.
base
Se(- Time basis in seconds;
Min – Time basis in minutes;
Pr n
Program number
Selects the ramp and soak profile program to be edited/viewed. The sequence of parameters that follows refer to this selected program. Total of 20 programs possible.
Ptol
Program Tolerance
Maximum admitted deviation of PV with respect to SP. If exceeded, the program
execution is suspended (the internal timer freezes) until the deviation be
returns back within the defined tolerance.
The value 0 (zero) disables the function (the program progresses regardless of
the difference between PV and SP).
Psp0 Program SP’s, 0 to 9: Group of 10 values of SP that Psp9 define the Ramp and Soak profile segments.
Pt1 Pt9
Segments durations, 1 to 9: Defines the time of duration, in second or minutes, of the segments of the program being edited.
Pe1 Alarms of Event, 1 to 9: Parameters that define Pe9 which alarms are to be
activated during the
Program event execution of a certain program segment. The alarms chosen must
have its function configured as “rS.”
(See Table 3)
Lp
Link Program
Link Programs: Number of the next profile program to be linked following the current program. Profiles can be linked together to produce larger programs of up to 180 segments.
0 do not link to any other program.
CYCLE OF ALARMS
Fva1 Fva2 Fva3 Fva4
FUNCTIONS OF ALARMS 1 to 4. Defines the functions for the alarms among the options of the Table 3.
bla1 bla2 bla3 bla4
BLOCK ALARM 1 TO 4: This function blocks the alarms when the controller is
energized.
YES – enables initial blocking NO – inhibits initial blocking
When enabled, the alarm will not be active at power-up, waiting for PV
(Process Variable) to reach a non-alarm situation. From this point on the
alarm will be free to actuate should a new alarm situation occur.
NOVUS AUTOMATION
Controller N1200
xya1 xya2 xya3 xya4
ALARM HYSTERESIS: Defines the difference between the value of PV at which the alarm is triggered and the value at which it is turned off (in engineering units).
A1t1 Defines the temporization time t1, in seconds, for
A2t1 the alarms. Defines the temporization time t1, in
A3t1 A4t1
seconds, for the alarms time functions. The value 0 (zero) disables the function.
Refer to Table 4 for configuring this parameter
Alarm Time t1 timed functions. The value 0 (zero) disables the
function.
Refer to Table 4 for configuring this parameter.
A1t2 A2t2 A3t2 A4t2
Alarm Time t2. Defines the temporization time t2, in seconds, for the alarms time functions. The value 0 (zero) disables the function. Refer to Table 4 for configuring this parameter
flsh
Flash
Allows visual signalization of an alarm occurrence by flashing the indication
of PV in the operation level.
To enable, the user chooses which alarms are to be associated with this
feature: 1, 2, 3, 4.
CYCLE OF SCALE
Type
Type
fltr
Filter
INPUT TYPE: Selects the input signal type to be connected to the process
variable input. Refer to Table 1 for the available options.
Digital Input Filter – Used to improve the stability of the measured signal
(PV). Adjustable between 0 and 20. In 0 (zero) it means filter turned off and
20 means maximum filter. The higher the filter value, the slower is the
response of the measured value.
Dppo Selects the decimal point position to be viewed in
Decimal Point both PV and SP.
vnI t Unit. Temperature indication in ºC or ºF:
root
Square Root
Square Root Function. Applies the quadratic function on the input signal,
within the limits programmed in “SPLl” and “spkL.”
YES Enables the Function no Does not enable the Function
The indication assumes the lower limit value when the input signal is below 1
% of programmed span.
Parameter available for lineal inputs only.
0ffs
Offset
SENSOR OFFSET: Offset value to be added to the PV reading to compensate sensor
error.
Default value: zero.
e.rsp Enables remote SP.
Enable Remote SP
YES Enables the Function no Does not enable the Function
This parameter is not displayed when the remote SP selection is defined by a Digital Input.
rsp
Remote SP type
Defines the signal type for the remote SP.
0-20 4-20 0-5 0-10
current of 0-20 mA current of 4-20 mA voltage of 0-5 V voltage of 0-10 V
Parameter displayed when remote SP is enabled.
rsll
Remote SP Low Limit
REMOTE SETPOINT LOW LIMIT: used in
conjunction with the rSxL, scales the remote SP
input defining the initial value in the remote SP indication range.
Parameter displayed when remote SP is enabled.
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rskl REMOTE SETPOINT HIGH LIMIT: defines the full
Remote SP scale indication of the Remote Setpoint.
High Limit Parameter displayed when remote SP is enabled.
Spll
Setpoint Low Limit
Defines the SP lower limit of SP.
For the linear analog input types available (0-20 mA, 4-20 mA, 0-50 mV, 0-5 V
and 0-10 V), defines the minimum PV indication range, besides limiting the SP
adjustment.
Spxl Defines the upper limit for adjustment of SP.
Setpoint High For the linear analog input types available (0-20 Limit mA, 4-20
mA, 0-50 mV, 0-5 V and 0-10 V), defines the maximum PV indication range,
besides limiting the SP adjustment.
rtll In association with the rtxl parameter, it defines
Retransmission the analog retransmission scale for PV or SP. The
Low Limit rtll represents the. minimum scale value for
the analog output
This parameter is displayed only if the analog retransmission is selected in the I/O 5 parameter (I/O level).
rtkl Defines the full scale value for the analog
retransmission of PV or SP.
Retransmission High Limit
This
parameter
is
displayed
only
when
the
analog
retransmission is selected in the I/O 5 parameter
(I/O level).
1eov
Percentage output value that will be transfer to MV when the SAFE output
function is enabled. If
1eov = 0, the SAFE output function is disabled
and the outputs are turned off in the occurrence of a sensor fail.
bavd Digital communication Baud Rate selection, in
Baud Rate kbps: 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6 and 115.2
prty
Parity
Parity of the serial communication.
none Without parity Ewem Even parity 0dd Odd parity
Addr
Address
SLAVE ADDRESS SELECTION: Identifies the controller in the network. The possible address numbers are from 1 to 247.
CYCLE OF I/OS (INPUTS AND OUTPUTS)
Io 1 Function of the channel I/O 1: Selection of the
function used in the channel I/O 1, according to the Table 2.
Io 2 Function of the channel I/O 2: Selection of the
function used in the channel I/O 2, according to the Table 2.
Io 3 Function of the channel I/O 3: Selection of the
function used in the channel I/O 3, according to the Table 2.
Io 4 Function of the channel I/O 4: Selection of the
function used in the channel I/O 4, according to the Table 2.
Controller N1200
Io 5 Function of the channel I/O 5: Selection of the
function used in the channel I/O 5, according to the Table 2.
CYCLE OF CALIBRATION
All of the input and output types are calibrated in the factory. If a
recalibration is required, this should be carried out by an experienced
personnel. If this cycle is accidentally accessed, pass through all the
parameters without pressing the or keys
pass Input of the Access Password.
Password This parameter is presented before the protected cycles. See item Protection of Configuration.
inL(
Input Low Calibration
See section MAINTENANCE / Input Calibration. Enter the value corresponding to the low scale signal applied to the analog input.
ink(
Input High Calibration
See section MAINTENANCE / Input Calibration. Enter the value corresponding to the full scale signal applied to the analog input.
rsL( See section: MAINTENANCE / Input Calibration
Remote SP Low Calibration
Enter the value corresponding to the signal applied to the remote SP input.
low
scale
rsk( See section: MAINTENANCE / Input Calibration.
Remote SP High Calibration
Enter the value corresponding to the signal applied to the remote SP input.
full
scale
0vL(
Output Low Calibration
See section MAINTENANCE / Analog output Calibration. Enter the analog low value as measured at the analog output.
0vk( See section MAINTENANCE / Analog output
Calibration. Enter the analog high value as
Output High Calibration
measured at the analog output.
rstr
Restore
(j
Restores the factory calibration for all inputs and outputs, disregarding
modifications carried out by the user.
Adjusts the of cold junction temperature value.
ktyp Parameter that informs the controller about the
hardware optional installed. It should not be altered Hardware Type by the
user, except when an accessory is introduced
or removed. 0 Basic model. Without optional items 1 485 2 3R 3 3R +
485 4 DIO 5 DIO + 485 8 HBD 9 HDB + 485
Note: The options 6 and 7 not are used.
Pas.( Allows defining a new access password, always
different from zero.
Prot Sets up the Level of Protection. See Table 7.
Freq Mains frequency. This parameter is important for
proper noise filtering.
NOVUS AUTOMATION
8 / 12
OPERATION CYCLE TUNING CYCLE
PV and SP (trl
PV and MV Epr p.seg t.seg Rvn
atvn pb ir dt (t
Kyst a(t Lbd.t bias ovll ovkl sfst Spa1 – spa4
PROGRAM CYCLE
PR.tb pr n Ptol psp0 psp9 pt1 pt9 pe1 pe9
Lp
ALARM CYCLE CONFIGURATION CYCLE I/O CYCLE
fva1 – fva4
type
io1
bla1 – bla4
fltr
io2
kya1 – kya4
dppo
io3
a1t1
vnit
Io4
a1t2
Root
Io5
a2t1
Offs
a2t2
e.rsp
flsh
Rsp
Rsll
Rskl
Spll
Spkl
Ieov
Rtll
rtkl
Bavd
Prty
addr
CALIBRATION CYCLE
pass Inl( Ink( Rsl( Rsk( 0vl( 0vk( rstr
(j ktyp Pas.( prot freq.
Table 6 All the Controller’s Parameters
PROTECTION OF CONFIGURATION
The controller provides means for protecting the parameters configurations,
not allowing modifications to the parameters values, avoiding tampering or
improper manipulation.
The parameter Protection (PROt), in the Calibration level, determines the
protection strategy, limiting the access to particular levels, as shown by the
table below.
PROTECTION LEVEL
PROTECTED CYCLES
1
Only the Calibration level is protected.
2
I/Os and Calibration levels.
3
Tuning, I/Os and Calibration levels.
4
Alarm, Tuning, I/Os and Calibration levels.
5
Programs, Alarm, Tuning, I/Os and Calibration levels.
6
Tuning, Programs, Alarm, Input, I/Os and Calibration levels.
7
Operation (except SP), Tuning, Programs, Alarm, input, I/Os and Calibration levels.
8
Operation, Tuning, Programs, Alarm, Input, I/Os and Calibration levels.
Table 7 Levels of Protection for the Configuration
Access Password:
The protected levels, when accessed, request the user to provide the Access
Password for granting permission to change the configuration of the parameters
on these cycles.
The prompt PASS precedes the parameters on the protected levels. If no
password is entered, the parameters of the protected cycles can only be
visualized.
The Access Code is defined by the user in the parameter Password Change
(PAS.(), present in the Calibration level. The factory default for the
password code is 1111.
Protection of the access code
The protection system built into the controller blocks for 10 minutes the
access to protected parameters after 5 consecutive frustrated attempts of
guessing the correct password.
Master Password
The Master Password is intended for allowing the user to define a new password
in the event of it being forgotten. The Master Password doesn’t grant access
to all parameters, only to the Password Change parameter (PAS(). After
defining the new password, the protected parameters may be accessed (and
modified) using this new password.
The master password is made up by the last three digits of the serial number
of the controller added to the number 9000.
As an example, for the equipment with serial number 07154321, the master
password is 9 3 2 1.
RAMPS AND SOAKS PROGRAMS
This feature allows the creation of Ramp and Soak Setpoint Profiles
(Programs). Up to 20 different profiles with 9 segments each can be
programmed. Longer profiles of up to 180 segments can be created by linking 2
or more profiles together.
The figure below displays a profile model:
Figure 8 – Example of a Ramp and Soak
Once a profile is defined and selected for execution (parameter EPr in the
operating level), the controller starts to generate the SP profile
automatically in accordance with the elaborated program.
To execute a profile with fewer segments just program 0 (zero) for the time
intervals that follow the last segment to be executed.
SV SP1
SP0 T1
SP2 SP3
T2 T3 T4=0 Time
Figure 9 – Program example with few segments
NOVUS AUTOMATION
9 / 12
The program tolerance defines the maximum deviation between PV and SP for the
execution of the profile. If this deviation is exceeded, the program will be
halted until the deviation falls to within the tolerance band.
Programming 0 (zero) in the “Ptol” parameter disables the program tolerance
and the profile execution will continue regardless of the PV value (time
priority as opposed to SP priority).
The configured time limit for each segment is 9999 and can be displayed in
seconds or minutes, depending on the time base configured.
LINK OF PROGRAMS
It is possible to create a more complex program, with up to 180 segments,
joining the 20 programs. This way, at the end of a program execution the
controller immediately starts to run the next one, as indicated in the “LP”.
To force the controller to 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.
SV
Program 1
Program 2
SP3 SP4 SP1 SP2
SP5 / SP0
SP3
SP1 SP2
SP0 T1 T2 T3 T4 T5 T1
T2 T3
SP4 T4
Time
Figure 10 – Example of interlinked programs
EVENT ALARM
The Event Alarm function associates the alarms to specific segments of a
program. The information of which alarms are to be activated or deactivated is
given in parameters ” PE1″ to ” PE9. Press the and keys until the desired
alarm numbers are displayed.
The Event Alarm requires that the Alarm function be configured as “rS “.
Notes:
1. If PtoL is different than zero, the controller will wait for the PV to
reach the first program set point SP0 in order to start the program execution.
Otherwise, it will start promptly.
2. Should any power failure occur, the controller resumes the program
execution at the beginning of the segment that was interrupted.
DETERMINATION OF PID PARAMETERS
The determination (or tuning) of the PID control parameters in the controller
can be carried out in an automatic way and auto-adaptive mode. The automatic
tuning is always initiated under request of the operator, while the auto-
adaptive tuning is initiated by the controller itself whenever the control
performance becomes poor.
Automatic tuning: In the beginning of the automatic tuning the controller has
the same behavior of an ON/OFF controller, applying minimum and maximum
performance to the process. Along the tuning process the controller’s
performance is refined until its conclusion, already under optimized PID
control. It begins immediately after the selection of the options FAST, FULL,
RSLF or TGHT, defined by the operator in the parameter ATUN.
Auto-adaptive tuning: Is initiated by the controller whenever the control
performance is worse than the one found after the previous tuning. In order to
activate the performance supervision and autoadaptive tuning, the parameter
ATUN must be adjusted for SELF, RSLF or TGHT. The controller’s behavior during
the auto-adaptive tuning will depend on the worsening of the present
performance. If the maladjustment is small, the tuning is practically
imperceptible for the user. If the maladjustment is big, the auto-adaptive
tuning is similar to the method of automatic tuning, applying minimum and
maximum performance to the process in ON/OFF control.
NOVUS AUTOMATION
Controller N1200
Figure 11 Example of auto tuning
Figure 12 – Example of auto-adaptive tuning
The operator may select, through the ATUN parameter, the desired tuning type
among the following options: · OFF: The controller does not carry through
automatic tuning or
auto-adaptive tuning. The PID parameters will not be automatically determined
nor optimized by the controller. · FAST: The controller will accomplish the
process of automatic tuning one single time, returning to the OFF mode after
finishing. The tuning in this mode is completed in less time, but not as
precise as in the FULL mode. · FULL: The same as the FAST mode, but the tuning
is more precise and slower, resulting in better performance of the P.I.D.
control. · SELF: The performance of the process is monitored and the auto-
adaptive tuning is automatically initiated by the controller whenever the
performance becomes poorer. After a tuning cycle, the controller starts
collecting data from the process for determining the performance benchmark
that will allow evaluate the need for future tunings. This phase is
proportional to the process response time and is signaled by the flashing TUNE
indication on the display. It is recommended not to turn the controller off
neither change the SP during this learning period. · rSLF: Accomplishes the
automatic tuning and returns into the SELF mode. Typically used to force an
immediate automatic tuning of a controller that was operating in the SELF
mode, returning to this mode at the end. · TGHT: Similar to the SELF mode, but
in addition to the autoadaptive tuning it also executes the automatic tuning
whenever the controller is set in RUN=YES or when the controller is turned on.
Whenever the parameter ATUN is altered by the operator into a value different
from OFF, an automatic tuning is immediately initiated by the controller (if
the controller is not in RUN=YES, the tuning will begin when it passes into
this condition). The accomplishment of this automatic tuning is essential for
the correct operation of the autoadaptative tuning. The methods of automatic
tuning and auto-adaptative tuning are appropriate for most of the industrial
processes. However, there may be processes or even specific situations where
the methods are not capable to determine the controller’s parameters in a
satisfactory way, resulting in undesired oscillations or even taking the
process to extreme conditions. The oscillations themselves imposed by the
tuning methods may be intolerable for certain processes. These
10 / 12
possible undesirable effects must be considered before beginning the
controller’s use, and preventive measures must be adopted in order to assure
the integrity of the process and users.
The “TUNE” signaling device will stay on during the tuning process.
In the case of PWM or pulse output, the quality of tuning will also depend on
the cycle time adjusted previously by the user.
If the tuning does not result in a satisfactory control, refer to Table 8 for
guidelines on how to correct the behavior of the process.
PARAMETER
VERIFIED PROBLEM SOLUTION
Proportional Band
Slow answer Great oscillation
Decrease Increase
Rate of Integration
Slow answer Great oscillation
Increase Decrease
Derivative Time
Slow answer or instability Great oscillation
Decrease Increase
Table 8 – Guidance for manual adjustment of the PID parameters
MAINTENANCE
PROBLEMS WITH THE CONTROLLER
Connection errors and inadequate programming are the most common errors found
during the controller operation. A final revision may avoid loss of time and
damages.
The controller displays some messages to help the user identify problems.
MESSAGE —Err1 Err6
DESCRIPTION OF THE PROBLEM
Open input. No sensor or signal.
Connection and/or configuration errors. Check the wiring and the
configuration.
Other error messages may indicate hardware problems requiring maintenance service. When contacting the manufacturer, inform the instrument serial number, obtained by pressing the key for more than 3 seconds.
CALIBRATION OF THE INPUT
All inputs are factory calibrated and recalibration should only be done by
qualified personnel. If you are not familiar with these procedures do not
attempt to calibrate this instrument.
The calibration steps are:
a) Configure the type of input to be calibrated.
b) Configure the lower and upper limits of indication for the maximum span of
the selected input type.
c) At the input terminals inject a signal corresponding to a known indication
value a little above the lower display limit.
d) Access the parameter “inLC”. With the keys and adjust the display reading
such as to match the applied signal. Then press the P key.
e) Inject a signal that corresponds to a value a little lower than the upper
limit of indication.
f) Access the parameter “inLC”. With the keys and adjust the display reading
such as to match the applied signal. Then press the P key.
Note: When checking the controller calibration with a Pt100 simulator, pay
attention to the simulator minimum excitation current requirement, which may
not be compatible with the 0.170 mA excitation current provided by the
controller.
ANALOG OUTPUT CALIBRATION · Configure I/O 5 for the current output to be
calibrated, be it
control or retransmission. · In the screen “Ctrl”, program manual mode (man).
· Connect a current meter to the analog output.
NOVUS AUTOMATION
Controller N1200
· Enter the calibration cycle with the correct password.
· Select the screen “ovLC”. Press the keys and for the controller to recognize
the calibration process of the current output.
· Read the current indicated on the current meter and adjust the parameter
“ovLC” to indicate this current value (use the keys and )
· Select the screen “ovxC”. Press the keys and for the controller to recognize
the calibration process of the current output.
· Read the current indicated on the current meter and adjust the parameter
“ovkC” to indicate this current value
· Press the key P in order to confirm the calibration procedure and return to
the operating level.
SERIAL COMMUNICATION
The controller can be supplied with an asynchronous RS-485 digital
communication interface for master-slave connection to a host computer
(master).
The controller works as a slave only and all commands are started by the
computer which sends a request to the slave address. The addressed unit sends
back the requested reply.
Broadcast commands (addressed to all indicator units in a multidrop network)
are accepted but no reply is sent back in this case.
CHARACTERISTICS
· Signals compatible with RS-485 standard. MODBUS (RTU) Protocol. Two wire
connection between 1 master and up to 31 (addressing up to 247 possible)
instruments in bus topology. The communication signals are electrically
insulated from the rest of the device;
· Maximum connection distance: 1000 meters.
· Time of disconnection for the controller: Maximum 2 ms after last byte.
· Selectable speed; 8 data bits; 1 stop bit; selectable parity (no parity,
pair or odd);
· Time at the beginning of response transmission: maximum 100 ms after
receiving the command.
· There is no electrical isolation between serial communication (RS485) and
channel I/O5.
The RS-485 signals are:
D1 D D + B Bi-directional data line.
Terminal 16
D0 D: D – A Bi-directional inverted data line.
Terminal 17
C
Optional connection that improves the Terminal 18
performance of the communication. GND
CONFIGURATION OF PARAMETERS FOR SERIAL COMMUNICATION
Two parameters must be configured for using the serial type: bavd: Communication speed. prty: Parity of the communication. addr: Communication address for the controller.
REDUCED REGISTERS TABLE FOR SERIAL COMMUNICATION
COMMUNICATION PROTOCOL
The MOSBUS RTU slave is implemented. All configurable parameters can be
accessed for reading or writing through the communication port. Broadcast
commands are supported as well (address 0).
The available Modbus commands are:
03 – Read Holding Register 05 – Force Single Coil
06 – Preset Single Register 16 – Preset Multiple Register
11 / 12
HOLDING REGISTERS TABLE
Follows a description of the usual communication registers. For full documentation download the Registers Table for Serial Communication in the N1200 section of our website www.novusautomation.com.
All registers are 16 bit signed integers.
Address Parameter
Register Description
0000 Active SP Read: Active control SP (main SP, from ramp and soak or from remote SP). Write: to main SP. Range: from spll to spkl.
0001
PV Read: Process Variable.
Write: Not allowed.
Range: Minimum value is the one
configured in spll and the maximum value
is the one configured in spkl. Decimal
point position depends on dppo value.
In case of temperature reading, the value
read is always multiplied by 10,
independently of dppo value.
0002
MV Read: Output Power in automatic or manual
mode.
Write: Not allowed. See address 28.
Range: 0 to 1000 (0.0 to 100.0 %).
SPECIFICATIONS
DIMENSIONS:…………………………………. 48 x 48 x 110 mm (1/16 DIN) Cutout in the Panel:
…………………45.5 x 45.5 mm (+0.5 -0.0 mm) Approximate Weight: ……………………………………………………
150 g
POWER SUPPLY………………..100 to 240 Vac/dc (±10 %), 50 / 60 Hz Optionally 24V:
………………12 to 24 Vdc / 24 Vac (-10 % / +20 %) Maximum
consumption:………………………………………………… 9 VA
ENVIRONMENTAL CONDITIONS: Operation Temperature: ……………………………………….. 5 to 50 °C
Relative Humidity: ……………………………………80 % max. @ 30 ºC For temperatures above 30
ºC, reduce 3 % for each ºC Internal Use; Category of installation II, Degree
of pollution 2; altitude < 2000 m
INPUT………….T/C, Pt100, voltage and current (according to Table 1) Internal
Resolution: ……………………………. 32767 levels (15 bits) Resolution of Display: ….
12000 levels (from – 1999 up to 9999) Rate of input reading: ……………………………up to
55 per second Accuracy: .Thermocouples J, K, T, E: 0.25 % of the span ±1 ºC
……………….Thermocouples N, R, S, B: 0.25 % of the span ±3 ºC
……………………………………………………….Pt100: 0.2 % of the span …………. 4-20 mA, 0-50 mV, 0-5
Vdc, 0-10 Vdc: 0.2 % of the span Input Impedance: 0-50 mV, Pt100 and
Thermocouples: >10 M ……………………………………………………………………… 0-5 V: >1 M …………………………………………
4-20 mA: 15 (+2 Vdc @ 20 mA) Measurement of Pt100: …………… Three wire type,
(=0.00385) with compensation for cable length, excitation current of 0.170 mA.
All input and output types are factory-calibrated. Thermocouples according to
standard NBR 12771 / 99, RTD’s NBR 13773 / 97;
ANALOGICAL OUTPUT (I/O5): …..0-20 mA or 4-20 mA, 550 max. 31000 levels,
insulated, for control or retransmission of PV and SP
CONTROL OUTPUT: 2 Relays SPST-NA (I/O1 and I/O2): 1.5 A / 240 Vac, general use
……………………..1 Relay SPDT (I/O3): 3 A / 250 Vac, general use ……………………..Voltage
pulse for SSR (I/O5): 10 V max. / 20 mA …………. Voltage pulse for SSR (I/O3 and
I/O4): 5 V max. / 20 mA
ELECTROMAGNETIC COMPATIBILITY:…………… EN 61326-1:1997
and EN 61326-1 / A1:1998
SAFETY: …………………… EN61010-1:1993 and EN61010-1 / A2:1995
USB INTERFACE 2.0, CDC CLASS (VIRTUAL COMMUNICATIONS PORT), MODBUS RTU
PROTOCOL.
NOVUS AUTOMATION
Controller N1200
SPECIFIC CONNECTIONS FOR TYPE FORK TERMINALS OF 6.3 MM;
FRONT PANEL: …………………………..IP65, polycarbonate – UL94 V-2 CASE:
………………………………………………… IP20, ABS+PC UL94 V-0 STARTS UP OPERATION: after 3 seconds
connected to the power supply;
CERTIFICATIONS: ………………………………….CE / UL (FILE: 300526)
IDENTIFICATION
N1200 –
3R –
485 –
24V
A
B
C
D
A: Controller Model: N1200;
B: Optional I/Os: Blank (basic version, without I/O3 nor I/O4); 3R (SPDT Relay
in I/O3); DIO (Digital I/Os in I/O3 and I/O4); HBD (Burnt-Out Resistance
detection);
C: Digital Communication: Blank (basic version, without serial communication);
485 (RS485, Modbus protocol)
D: Power Supply: Blank (basic version, 100 to 240 Vac/dc input); 24V (12 to 24
Vdc / 24 Vac input voltage);
WARRANTY
Warranty conditions are available on our website
www.novusautomation.com/warranty.
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