Novus N1050 User manual

NOVUS AUTOMATION 1/8
N1050 Controller
TEMPERATURE CONTROLLER
- INSTRUCTIONS MANUAL – V1.0x A
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.
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.
ELECTRICAL CONNECTIONS
Fig. 01 below shows the electrical terminals of the controller:
Fig. 01 - Connections of the back panel
RECOMMENDATIONS FOR THE INSTALLATION
•All electrical connections are made to the screw terminals at the
rear of the controller.
•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
FEATURES
INPUT TYPE SELECTION
Table 01 shows the sensor types accepted and their respective
codes and ranges. Access the parameter TYPE in the INPUT cycle
to select the appropriate sensor.
TYPE CODE RANGE OF MEASUREMENT
Thermocouple J
Tc j
Range: -110 to 950 °C (-166 to 1742 °F)
Thermocouple K
Tc k
Range: -150 to 1370 °C (-238 to 2498 °F)
Thermocouple T
Tc t
Range: -160 to 400 °C (-256 to 752 °F)
Thermocouple S
Tc s
Range: -50 to 1760 ºC (-58 to 3200 ºF)
Pt100
Pt
Range: -200 to 850 °C (-328 to 1562 °F)
Table 01 - Input types
OUTPUTS
The controller offers two, three or four output channels, depending on
the loaded optional features. The output channels are user
configurable as Control Output, Alarm 1 Output, Alarm 2 Output,
Alarm 1 or Alarm 2 Output and LBD (Loop Break Detect) Output.
OUT1 - Logical pulse, 5 Vdc / 25 mA, available at terminals 4 and 5.
OUT2 - Relay SPST-NA. Available at terminals 6 and 7.
OUT3 - Relay SPST-NA. Available at terminals 13 and 14.
OUT4 - Relay SPDT, available at terminals 10, 11 and 12.
CONTROL MODE
The controller can operate in two different manners: Automatic mode
or Manual mode. In automatic mode (
auto
) the controller defines the
amount of power to be applied on the process, based on defined
parameters (SP, PID, etc.). In the manual mode (
MaN
) the user
himself defines this amount of power. The parameter
Ctrl
defines
the control mode to be adopted.

N1050 Controller
NOVUS AUTOMATION 2/8
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.
CONTROL OUTPUT
The control strategy can be ON/OFF (when
PB
=
0.0
) or PID. The
PID parameters can be automatically determined enabling the auto-
tuning function (
ATun
).
ALARM OUTPUT
The controller contains 2 alarms that can be directed (assigned) to any
output channel. The alarm functions are described in Table 02.
off
Output is not used as alarm.
Lo
Alarm of Absolute Minimum
Value. Triggers when the
value of measured PV is
below the value defined for
alarm Setpoint.
SPA1
PV
Hi
Alarm of Absolute Maximum
Value. Triggers when the
value of measured PV is
above the value defined for
alarm Setpoint.
SPA1
PV
dif
Alarm of Differential Value. In this function the
parameters
SP.A1
and
SP.A2
represent the deviation
of PV in relation to the SP of CONTROL.
SP
PV
SP + SPA1
SP – SPA1
SP
PV
SV – SPA1
SV + SPA1
Positive SPA1 Negative SPA1
Dif.L
Alarm of Minimum Differential Value. It triggers when
the value of PV is below the defined point by (using
the Alarm 1 as example).
SP
PV
SP – SPA1
SP
PV
SP –SPA1
Positive SPA1 Negative SPA1
Dif.H
Alarm of Valor Maximum Differential Value. Triggers
when the value of PV is above the defined point by
(using Alarm 1 as example).
SP
PV
SP + SPA1
SP
PV
SP + SPA1
Positive SPA1 Negative SPA1
ierr
Alarms of the Sensor Break (Sensor Break Alarm). It is
activated when the Input presents problems such as
interrupted sensor, bad connection, etc.
r5
Event (ramp and S
oak). Activated in a specific
segment of program.
Table 02 – Alarm functions
Note: Alarm functions on Table 02 are also valid for Alarm 2
(
SP.A2
).
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.
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
ierr
.
SAFE OUTPUT VALUE WITH SENSOR FAILURE
Function that ensures that the control output is in a safe condition for
the process when an error in the sensor input is identified.
When a fault is identified in the sensor, the controller will determine
the percentage value set in the parameter
iE.ou
for the control
output. The controller will remain in this condition until the sensor
failure disappears. When in ON/OFF mode, the values for
iE.ou
are only 0 and 100%. With control in PID mode, any value between 0
and 100% will be accepted.
LBD FUNCTION – LOOP BREAK DETECTION
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 output channel. Simply configure
the LDB function to the desired output channel (OUT1 or OUT2): 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 LBD is useful in detecting system failures, such us defective
sensors or actuators, loads and power supply, among others.
OFFSET
Allows fine adjustments to the PV reading for compensation of
sensor error.
USB INTERFACE
The USB interface is used for CONFIGURING or MONITORING the
controller. The NConfig software must be used for the configuration.
It makes it possible to create, view, save and open configurations
from the equipment or files in your computer. The tool for saving and
opening configurations in files makes it possible to transfer
configurations between pieces of equipment and to make backup
copies. For specific models, the NConfig software also makes it
possible to update the firmware (internal software) of the controller
through the USB.
For MONITORING purposes you can use any supervisory software
(SCADA) or laboratory software that supports the MODBUS RTU
communication on a serial communications port. When connected to
the USB of a computer, the controller is recognized as a conventional
serial port (COM x). Use the NConfig software or consult the
DEVICE MANAGER in the Windows CONTROL PANEL to identify
the COM port that was assigned to the controller. Consult the
mapping of the MODBUS memory in the controller’s communications
manual and the documentation of your supervisory software to
conduct the MONITORING process.
Follow the procedure below to use the USB communication of the
equipment:
1. Download the NConfig software from our website and install it on
your computer. The USB drivers necessary for operating the
communication will be installed together with the software.
2. Connect the USB cable between the equipment and the
computer. The controller does not have to be connected to a

N1050 Controller
NOVUS AUTOMATION 3/8
power supply. The USB will provide enough power to operate the
communication (other equipment functions cannot operate).
3. Open the NConfig software, configure the communication and
start recognition of the device.
The USB interface IS NOT SEPARATE from the
signal input (PV) or the controller’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.
OPERATION
The controller’s front panel, with its parts, can be seen in the Fig. 02:
Fig. 02 - Identification of the parts referring to the front panel
Display: Displays the measured variable, symbols of the
configuration parameters and their respective values/conditions.
Tx/RX Indicators:Flashes when the controller exchanges data with
the RS-485 communication network.
AT Indicator:On while the controller is in automatic tuning.
MAN Indicator: On while the controller is in manual mode.
RUN Indicator:On with control enabled (
RUN
=
YES
).
OUT Indicator:Indicates the instantaneous state of the control
output(s).
A1 and A2 Indicators:Indicate the occurrence of an alarm
condition.
°C / °F Indicators:Identify the set temperature unit.
Key:Key used to advance to successive parameters and
parameter cycles.
Increment Key and Decrement Key: Keys used to change
the parameter values.
Tecla : Keys used to retrocede parameters when in configuration
mode and performs special functions.
INITIALIZATION
When the controller is energized, the number of its current software
version will be displayed in the first 3 seconds, and then the value of
the measured process variable (temperature) will be displayed on the
upper display. The value of SP is displayed in the lower display. This
is the Display Screen.
To be used in a process, the controller needs to be preconfigured.
The configuration consists of the definition of each of the several
parameters presented. The user must understand the importance of
each parameter and, for each one, determine a valid condition or a
valid value.
The configuration parameters are gathered into groups of affinities,
called parameter cycles. The 6 parameter cycles are:
1 – Operation / 2 – Tuning / 3 – Programs / 4 – Alarms /
5 – Input / 6 – Calibration
The key gives access to the cycles and their parameters:
When you hold the key down, the controller will cycle from one
cycle to another every 2 seconds, displaying the first parameter of
each cycle:
PV >>
atun
>>
Pr.tb
>>
fu.a1
>>
type
>>
pass
>> PV …
To enter the desired cycle, simply release the key when your first
parameter is displayed. To advance on the parameters of this cycle,
use the key with short beeps. To return parameters, use the
key.
Each parameter has its symbol displayed in the upper display. Its
respective value/condition is shown in the lower display.
Depending on the Configuration Protection adopted, the
PASS
parameter is displayed as the first parameter of the cycle where the
protection starts. See chapter Configuration Protection.
DESCRIPTION OF THE PARAMETERS
OPERATION CYCLE
PV + SP PV Indication screen
. On the higher display
(white) the value of the measured variable (PV)
temperature is shown. On the lower display (green),
the control setpoint (SP) is shown.
CtrL
Control
Control Mode:
auto
- Means automatic control mode;
MaN
- Means manual control mode.
(Bumpless transfer between automatic and manual
control modes).
PV / MV MV screen.Displays the PV value in the upper
display and, in the lower display, displays the MV
value, in percentage, applied to the control output.
In Automatic Control mode, the value of MV can
only be displayed. In Manual Control mode, the
value of MV can be changed by the user.
To differentiate this screen from the PV+SP
screen, the value of MV blinks constantly.
Sp.a1
Sp.a2
Setpoint
Alarm
Alarm SP. Value that defines the alarm activation
point. For the alarms set up with the functions of the
type Differential
, these parameters define
deviations.
For the alarm function
i.err
, this parameter is not
used.
Parameters shown in this level only when enabled
in the parameters
sp1.E
and
sp2.E
.
E pr
Enable Program
Execution of Program. Selects the ramp and
soak profile program to be executed.
0-Does not execute program;
1 to 5 - Number of the program to be
executed.
With enabled outputs (
RUN
=
YES
), the program
starts right after the program is selected.
p.Seg
Program
Segment
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 4.
t.seg
Time
Segment
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.
RUN
Run
Enables control outputs and alarms.
YES
- Outputs enables;
No
- Outputs not enabled.

N1050 Controller
NOVUS AUTOMATION 4/8
TUNING CYCLE
Atun
Auto Tune
Enables the auto-tuning function for the PID
parameters (
pb
,
ir
,
dt
). Defines the control
strategy to be taken:
off
- Turned off (no PID tuning);
Fast
- Automatic tuning;
FuLL
- More accurate automatic tuning.
PB
Proporcional
Band
Value of the term Pof the control mode PID, in
percentage of the maximum span of the input type.
Adjust of between 0 and 500.0 %.
When set to zero (0), control action is ON/OFF.
Hyst
Hysteresis
Control hysteresis. Hysteresis value for ON/OFF
control. Adjustable between 0 and the width of the
measuring range of the selected input type.
Displayed only if proportional band = 0.
ir
Integral Rate
Value of the term Iof the PID algorithm, in repetitions
per minute (Reset). Adjustable between 0 and 24.00.
Displayed only if proportional band ≠0.
Dt
Derivative Time
Value of the term Dof the control mode PID, in
seconds. Adjustable between 0 and 250.0 seconds.
Displayed only if proportional band ≠0.
Ct
Cycle Time
Pulse Width Modulation (PWM) period in seconds.
Adjustable between 0.5 and 100.0 seconds.
With the use of contactors, the recommended value
for the cycle time parameter must be greater than
10 s.
Displayed only if proportional band≠0.
Act
Action
Action Control:
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.
Sf.st
SoftStart
SoftStart Function. Time interval, in seconds, while
the controller limits the control output (MV) rising
rate.
(Zero value disables the Soft start function).
out1
out2
out3
out4
Output
Assign functions to the Output channels OUT1,
OUT2, OUT3 and OUT4:
off
- Not used;
Ctrl
- Control output;
A1
- Alarm 1 output;
A2
- Alarm 2 output;
A1.a2
- Alarm 1 + Alarm2 (OR logic);
Lbd
- Loop Break Detect Alarm.
PROGRAM CYCLE
Pr.tb
Program time
base
Defines the time base that will be used by all Ramp
and Soak programs.
SeC
- Time basis in seconds;
min
- Time basis in minutes.
R.prg
Program
restore
Function Resume Program. Parameter that defines
the behavior of the controller when it resumes from
a power failure in the middle of a program execution
of ramps and soaks.
Prog
- Returns at the beginning of the program;
P.seg
- Returns the beginning of the segment;
t.seg
-
Returns at the exact point where it
stopped;
off
- Return with control disabled (
RUN
=
No
).
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 5 programs possible (1 – 5).
P.toL
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.
P.sp0
P.sp4
Program SP
Program SP’s, 0 to 4. Sets
of 5 SP values that
define the program profile of ramps and soaks.
P.t1
P.t4
Program time
Program segment time, 1 to 4: Sets the duration
time, in seconds or minutes, of each of the 4
segments of the program being edited.
P.e1
P.e4
Program Event
Alarms of Event. Parameters that define which
alarms are to be activated during the execution of
a certain program segment:
oFF
- Do not trigger an alarm on this segment.
A1
- Activate alarm 1 when program reaches
this segment.
A2
- Activate alarm 2 when program reaches
this segment.
A1.A2
- Activate alarms 1 and 2 when program
reaches this segment.
The alarms chose
n must have its function
configured as
rS
.
Lp
Link Program
Link Program. At the end of running a program, any
other program can have its execution started
immediately.
0- Do not connect to any other program;
1 to 5 - Program number to be connected.
ALARMS CYCLE
Fu.a1
Fu.a2
Function Alarm
Functions of Alarms. Defines the functions for the
alarms among the options of the Table 02.
Sp.a1
Sp.a2
Setpoint Alarm
Alarm SP. Value that defines the point of actuation
of the alarm outputs. For alarms programmed with
Differential
functions, these parameters define
deviations.
This parameter is not used for the alarm function
off
,
ierr
or
r5
.
Sp1.e
sp2.e
Setpoint Enable
Configures display of SPA1 and SPA2 also in the
Operation Cycle.
YES
- SPA1/SPA2 are displayed in the Operation
Cycle
No
-
SPA1/SPA2 are not displayed in the
Operation Cycle
This parameter is not used for the alarm function
off
,
ierr
or
r5
.

N1050 Controller
NOVUS AUTOMATION 5/8
bL.a1
bL.a2
Blocking Alarm
Blocking Alarms.
YES
- Enables initial blocking;
No
- Inhibits initial blocking.
This parameter is not used for the alarm function
off
.
Hy.a1
Hy.a2
Histeresis of
Alarm
Defines the difference between the value of PV at
which the alarm is triggered and the value at which
it is turned off.
This parameter is not used for the alarm function
off
,
ierr
or
r5
.
fLsH
Flash
Allows visual signalization of an alarm occurrence
by flashing the indication of PV in the operation
level.
YES
- Enables alarm signaling flashing PV;
No
- Disables alarm signaling flashing PV.
This parameter is not used for the alarm function
off
.
INPUT CYCLE
Type
Type
Input Type: Selects the input signal type to be
connected to the process variable input. Refer to
Table 01 for the available options.
(J):
Tc J
-110 to 950 °C / -166 to 1742 °F
(K):
Tc k
-150 to 1370 °C / -238 to 2498 °F
(T):
Tc t
-160 to 400 °C / -256 to 752 °F
(S):
Tc s
-50 to 1760 °C / -58 to 3200 °F
(Pt100):
Pt
-200 to 850 °C / -328 to 1562 °F
fLtr
Filter
Digital Input Filter. Used to improve the stability of
the measured signal (PV).
The set value
corresponds to the value of the time constant. In
seconds (s). Adjustable from 0 to 300 s.
Dp.po
Decimal Point
Selects the decimal point position to be viewed in
both PV and SP.
uni t
Unit
Selects display indication for degrees Celsius or
Fahrenheit:
{C
- Indication in Celsius;
{f
- Indication in Fahrenheit.
Offs
Offset
Sensor Offset: Offset value to be added to the PV
reading to compensate sensor error.
Sp.LL
SP Low Limit
Defines the lower limit for adjustment of SP.
Sp.HL
SP High Limit
Defines the upper limit for adjustment of SP.
Lbdt
Loop break
detection time
Time interval for the LBD function. Defines the
maximum interval of time for the PV to react to a
control command. In minutes.
ie.ou
Input Error Output
Percentage value to be applied to the output on any
failure of the
sensor that is connected to the
controller input.
Baud
Baud Rate
Baud rate of serial communication. Available in the
following baud rates (in 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;
EVEM
- Even parity;
odd
- Odd parity.
Addr
Address
Number that identifies the controller in the serial
communication network, between 1 and 247.
CALIBRATION CYCLE
All types of input are calibrated in the factory. In case a
recalibration is required; it shall be carried out by a specialized
professional. In case this cycle is accidentally accessed, do not
perform alteration in its parameters.
Pass
Password
This parameter is presented before the protected
cycles. See item Protection of Configuration.
CaLb
Calibration
Enables the possibility for calibration of the
indicator. When the calibration is not enabled, the
related parameters are hidden.
in.LC
Input Low
Calibration
Enter the value corresponding to the low scale
signal applied to the analog input.
in.HC
Input High
Calibration
Enter the value corresponding to the full scale
signal applied to the analog input.
RESt
Restore
Restores the factory calibration for all inputs and
outputs, disregarding modifications carried out by
the user.
Cj
Cold Junction
This screen is for information purpose only.
This parameter is not used for the input function
type
Pt
.
Pas.C
Password Change
Allows defining a new access password, always
different from zero.
Prot
Protection
Sets up the Level of Protection. See Table 03.
H.PrG
Hold Program
Enables the Hold Program function on the key.
RUN.E
Run Enable
Enables the display of the RUN parameter on the
controller operating cycle.
SnH
Serial Number
High
Displays the first four digits of the electronic serial
number of the controller.
SnL
Serial Number
Low
Displays the last four digits of the electronic serial
number of the controller.
CONFIGURATION PROTECTION
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 cycle, determines the
protection strategy, limiting the access to particular cycles, as shown
by the Table 03.
PROTECTION
LEVEL PROTECTION CYCLES
1 Only the Calibration cycle is protected.
2 Input and Calibration cycles are protected.
3 Alarms, Input and Calibration cycles are
protected.
4 Programs, Alarms, Input and Calibration are
protected.
5
Tuning, Programs, Alarms, Input and
Calibration are protected.
6
All cycles, except SP screen in Operation
cycle, are protected.
7
All cycles, including SP, are protected.
Table 03– Levels of Protection for the Configuration

N1050 Controller
NOVUS AUTOMATION 6/8
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 levels.
The prompt
PASS
precedes the parameters on the protected levels.
If no password is entered, the parameters of the protected levels can
only be visualized.
The Access Password is defined by the user in the parameter
Password Change (
PAS.C
), present in the Calibration Level. The
factory default for the password code is 1111.
PROTECTION ACCESS PASSWORD
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 (
PASC
). 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.
RAMP AND SOAK PROGRAMS
Characteristic that allows the elaboration of a behavior profile for the
process. Each program consists of a set of up to 4 segments, called
RAMPS AND SOAKS PROGRAM, defined by SP values and time
intervals.
Up to 5 different ramp and soak programs can be created. The figure
below displays a profile model:
Fig. 03 - Example of a Ramp and Roak
Once the program is defined and executed, the controller
automatically generates the SP according to the program.
To execute a program with a number of segments smaller than 4
(four), simply program 0 (zero) for the next segment time to the last
desired segment.
The program tolerance function
P.toL
defines the maximum
deviation between PV and SP during program execution. If this
deviation is exceeded, the time count is interrupted until the deviation
is within the programmed tolerance (gives SP priority). If zero is set
in the tolerance, the controller executes the defined program without
considering any deviations between PV and SP (gives priority to
time).
Restore Program after Power Failure (Program restore)
Function that defines the behavior of the controller when it resumes
from a power failure in the midst of a program execution of ramps
and levels. The restore options are:
Prog
- Returns at the beginning of the program;
P.seg
- Returns the beginning of the segment;
t.seg
- Returns to the point of the previous program segment the
power failure;
off
- Returns with control disabled (
RUN
=
No
).
The
t.seg
option has its performance related to the configuration
adopted by the parameter
P.toL
. Thus, it also has the following
functions:
1- With
P.toL
set to zero, the controller resumes the execution
of the program immediately after the energy return (from the
point and segment where it stopped), regardless of the PV value
at that time.
2- With
P.toL
non-zero, the controller waits until PV enters the
deviation range defined by the value of
P.toL
and then
resumes the program execution.
Link of programs
It is possible to create a large, more complex program with up to 20
segments connecting the 5 programs. Thus, at the end of the
execution of a program, the controller immediately starts executing
another program.
In the elaboration of a program it was defined in the screen
LP
whether or not there will be connection to another program.
In order for the controller to be able to run a certain program or
programs continuously, simply connect a program to itself or the last
program to the first one.
Fig. 04 – Link programs example
Event Alarm
The Event Alarm function allows you to program the triggering of
alarms in specific segments of a program.
For this function to operate, the alarms to be triggered must have their
function set to
rS
and are configured in parameters
PE1
to
PE4
.
Hold Program Function
This function stops program execution when the key is pressed.
The H.Prg parameter of the Calibration Cycle enables the key
to perform this function. Pressing the key for 3 seconds will
immediately program the program. A new press, also of 3 seconds,
resumes its execution.
DETERMINATION OF PID PARAMETERS
During the process of determining automatically the PID parameters,
the system is controlled in ON/OFF in the programmed Setpoint. The
auto-tuning process may take several minutes to be completed,
depending on the system. The steps for executing the PID auto-
tuning are:
•Select the process Setpoint.
•Enable auto-tuning at the parameter
Atun
, selecting
FAST
or
FULL
.
The option
FAST
performs the tuning in the minimum possible time,
while the option
FULL
gives priority to accuracy over the speed.
The sign TUNE remains lit during the whole tuning phase. The user
must wait for the tuning to be completed before using the controller.
During auto tuning period the controller will impose oscillations to the
process. PV will oscillate around the programmed set point and
controller output will switch on and off many times.

N1050 Controller
NOVUS AUTOMATION 7/8
If the tuning does not result in a satisfactory control, refer to Table 04
for guidelines on how to correct the behavior of the process.
PARAMETER
VERIFIED PROBLEM
SOLUTION
Band Proportional Slow answer Decrease
Great oscillation Increase
Rate Integration
Slow answer
Increase
Great oscillation Decrease
Derivative Time
Slow answer or instability
Decrease
Great oscillation Increase
Table 04- Guidance for manual adjustment of the PID parameters
For further details on PID tuning, visit our web site
www.novusautomation.com.
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
DESCRIPTION OF THE PROBLEM
----
Open input. No sensor or signal.
Erro
Connection and/or configuration problems.
Check the wiring and the configuration.
Other error messages may indicate hardware problems requiring
maintenance service.
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 input type to be calibrated in the
type
parameter.
b) Configure the lower and upper limits of indication for the maximum
span of the selected input type.
c) Go to the Calibration Cycle.
d) Enter the access password.
e) Enable calibration by setting
YES
in
CaLb
parameter.
f) Using an electrical signals simulator, apply a signal a little higher
than the low indication limit for the selected input.
g) Access the parameter
in.LC
. With the keys and adjust
the display reading such as to match the applied signal. Then
press the key.
h) Apply a signal that corresponds to a value a little lower than the
upper limit of indication.
i) Access the parameter
in.HC
. With the keys and adjust
the display reading such as to match the applied signal.
j) Return to the Operation Cycle.
k) Check the resulting accuracy. If not good enough, repeat the
procedure.
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.
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.
The RS-485 signals are:
D1 D D + B Bi-directional data line. Terminal 15
D0
D -
A
Bi-directional inverted data line. Terminal 16
C Optional connection that improves the
performance of the communication. Terminal 17
GND
CONFIGURATION OF PARAMETERS FOR SERIAL COMMUNICATION
Three parameters must be configured for using the serial type:
baud
: 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 06 - Write Single Register
05 - Write Single Coil 16 - Write Multiple Register
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
sp.LL
to
sp.HL
.
0001 PV Read: Process Variable.
Write: Not allowed.
Range: Minimum value is the one
configured in
sp.LL
and the maximum
value is the one configured in
sp.HL
.
Decimal point position depends on
dp.po
value.
In case of temperature reading, the value
read is always multiplied by 10,
independently of
dp.po
value.
D:

N1050 Controller
NOVUS AUTOMATION 8/8
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 %).
IDENTIFICATION
N1050 ABC
A: Available Outputs:
PR: OUT1= Pulse / OUT2= Relay
PRRR: OUT1= Pulse / OUT2= OUT3= OUT4= Relay
B: Serial Communication:
(Blank) (basic version, without serial communication);
485 (RS-485 serial version, Modbus protocol)
C: Power Supply:
(Blank): .................................................................Model standard
..........................................100~240 Vac / 48~240 Vdc; 50~60 Hz
24 V: ............................................................................ Model 24 V
........................................................................12~24 Vdc / 24 Vac
SPECIFICATIONS
DIMENSIONS:..........................................48 x 48 x 80 mm (1/16 DIN)
Cut out the panel: .............................. 46 x 46 mm (+0.5 -0.0 mm)
Approximate Weight: .............................................................. 75 g
POWER SUPPLY:
Model Standard: .....................100 to 240 Vac (±10 %), 50/60 Hz
...................................... 48 to 240 Vdc (±10 %)
Model 24 V: ....................... 12 a 24 Vcc / 24 Vca (-10 % / +20 %)
Maximum Consumption:........................................................ 6 VA
ENVIRONMENTAL CONDITIONS:
Operation Temperature: ............................................... 0 to 50 °C
Relative Humidity:................................................... 80 % @ 30 °C
For temperatures above 30 °C, reduce 3 % for each °C.
Internal use; Category of installation II, Degree of pollution 2;
Altitude < 2000 meters.
INPUT:...........................J; K; T,Sand Pt100 (according of Table 01)
Internal Resolution:...................................... 32767 levels (15 bits)
Resolution of Display:......... 12000 levels (from -1999 up to 9999)
Rate of input reading: ....................................up 10 per second (*)
Accuracy: .......Thermocouples J, K, T: 0.25 % of the span ±1 °C
..................................Thermocouple S: 0,25 % of the span ±3 °C
................................................................Pt100: 0,2 % of the span
Input Impedance:..................Pt100 and thermocouples: > 10 MΩ
Measurement of Pt100: .......................... 3-wire type (α=0,00385)
With compensation for cable length, excitation current of 0.170 mA.
(*) Value adopted when the Digital Filter parameter is set to 0
(zero) value. For Digital Filter values other than 0, the Input
Reading Rate value is 5 samples per second.
OUTPUTS:
OUT1: ..................................................Voltage pulse, 5 V / 25 mA
OUT2: ................................Relay SPST; 1,5 A / 240 Vac / 30 Vdc
OUT3: ................................Relay SPST; 1,5 A / 240 Vac / 30 Vdc
OUT4: ...................................Relay SPDT; 3 A / 240 Vac / 30 Vdc
FRONT PANEL:......................... IP65, Polycarbonate (PC) UL94 V-2
HOUSING:.................................................... IP20, ABS+PC UL94 V-0
SPECIFIC CONNECTIONS FOR TYPE FORK TERMINALS.
DISPLAY: LCD type, alphanumeric with 11 segments.
PROGRAMMABLE CYCLE OF PWM: from 0.5 up 100 seconds;
STARTS UP OPERATION: after 3 seconds connected to the power
supply.
CERTIFICATION: UL CE
WARRANTY
Warranty conditions are available on our website
www.novusautomation.com/warranty.