Novus N1500LC User manual

NOVUS AUTOMATION 1/7
Indica
tor N1500LC
UNIVERSAL INDICATOR
– INSTRUCTIONS MANUAL – V2.3x E
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 this manual carefully prior to
installation and operation of the
unit.
CAUTION OR DANGER:
Electric 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 device is used in a manner not
specified in this manual, its safety features may be impaired.
INTRODUCTION
The N1500LC is an indicator designed for weighing system with load
cells. It accepts a wide variety of electrical signals. It has a display
with six-digit LED display for the measured value and device
parameters.
The whole device configuration is done through the keyboard without
any change in the circuit. Thus, the selection of input type and the
type of alarms action, besides other special functions are all
accessed and programmed through the front keypad.
It is important that you read this manual carefully before using the
instrument. This is an electronic device that requires care in handling
and operation, and if properly used, it will be very efficient in the work
required.
The main features of the basic version of N1500LC are as follows:
•Input: 4-20 mA, 0-20 mA, 0-50 mV, 0-20 mV e -20 a 20 mV;
•Increasing or decreasing display;
•10 Vdc (or 5 Vdc) power supply for load cells;
•Memory for maximum and minimum values;
•Hold, peak hold, tare, zero tare and automatic zero functions;
•Digital input;
Optionally can have:
•Process Variable (PV) retransmission in 0-20 mA ou 4-20 mA;
•RS485 MODBUS RTU serial communication;
•3rd and 4th alarm relays.
The front panel is shown below, with a description of its elements.
Figure 1 - Identification of the elements of the front panel
Display: Displays the value of the measured variable (PV) and the
mnemonics of the device programming parameters.
A1, A2, A3 and A4: show active alarms.
Rx and Tx: indicate RS485 communication line is active.
Pkey - This key is used to access different displays with the
programmable parameters of the device.
BACK key - This key is used to go back to the previous
parameter displayed in the menu display.
INCREMENTS/ZERO key and DECREMENTS/ZERO
key -They make possible the change the parameter values.
They are also used to display maximum and minimum
values stored in memory.
Key Special FUNCTION - This special function key is used for
programmed functions as explained in the SPECIAL FUNCTION KEY
section of this manual.
PROCESS VARIABLE INPUT - PV
The type of input to be used by the indicator must be set by the user
via the keyboard, among types established in Table 1.
All input types available are factory calibrated and require no further
adjustment by the user, except the definition of range of indication.
Type Code Measurement Range
Non-linear 4-20 mA
c.4-20
Programmable indication range.
Three maximum range options:
-32000 to +32000
0 to +60000
0 to +120000 (only even values)
Nonlinear signals will be
linearized according to the
programmed linearization.
Non-linear 0-20 mA
c.0-20
Linear 4-20 mA
4-20 a
Linear 0-20 mA
0-20 a
Non-linear 0-50 mV
c. 50
Non-linear -20 a 20 mV
c. -20
Non-linear 0-20 mV
C. 20
Linear 0 – 50 mV
50
Linear -20 a 20 mV
-20.20
Linear 0-20 mV
20
Table 1 - Input types accepted by the indicator

N1500LC Indicator
NOVUS AUTOMATION 2/7
ALARMS
The indicator has 2 alarm outputs in the basic version and up to 4
alarms outputs optionally.
TYPE PROMPT ACTION
Disabled
Off
Alarm disabled
Open Semsor (input
Error)
ierr
Alarm will go ON if sensor breaks
High Alarm
(Low)
Lo
Alarm SP
PV
High Alarm
(High)
Ki
Alarm SP
PV
Differential Low
(differential Low)
Dif.lo
PV
ALreF
ALreF + Deviation
Differential High
(differential High)
Dif.ki
PV
ALrEF + Deviation
ALrEF
Differential out of
range
(diferencial Fora)
Dif f
PV
ALrEF + Deviation
ALrEF
ALrEF - Deviation
Differential within
range
(differential Within)
Dif d
PV
ALrEF + Deviation
ALrEF
ALrEF - Deviation
Table 2 - Alarm basic functions
Each alarm has a Warning Light in the front panel that shows when it
was activated.
Alarm Functions
The alarms can be set to operate in six different modes: Open
Sensor, Low alarm, High alarm, Differential low, Differential High or
Differential (Band). These modes are shown in Table 2 and
described below.
Open Sensor
The alarm is triggered whenever the sensor breaks or is badly
connected or broken.
Low Alarm
The alarm relay is triggered whenever the measured value is below
the alarm set point.
High Alarm
The alarm relay is triggered whenever the measured value is above
the alarm set point.
Differential (or Band) out of range
For Differential alarm it is necessary to define two parameters:
Differential Alarm Reference Value (
ALrEF
) and Alarm Differential
Setpoint (Deviation).
The Differential out of range alarm occurs when the measured value
is outside the range defined by:
(
ALrEF
- Deviation) and (
ALrEF
+ Deviation)
Differential (or Band) within range
Same as previous, but acting within the range defined above.
Differential Low
Triggered whenever the measured value is below the set point by:
(
ALrEF
- Deviation)
Differential High
Triggered whenever the measured value is above the set point by:
(
ALrEF
+ Deviation)
Alarm Timer
The N1500LC allows programming of the Time Setting of Alarms,
being able to set delays in alarm condition; send a single pulse at the
time of trigger; or allow the generation of sequential pulses.
Table 3 shows these advanced functions. Times T1 and T2 can be
programmed from 0 to 6500 seconds and are defined when setting
up the device. For alarms with no time delays, set T1 and T2 with
value 0 (zero).
The Warning LEDs associated with the alarm always light up when
the alarm condition occurs, regardless of the current state of the
output relay, which may be de-energized momentarily due to a time
delay.
Advanced
Function
T1
T2
ACTION
Normal
Operation
0
0
Alarm Event
Alarm
Output
Delayed
0
1 s to
6500 s
Alarm Event
Alarm
Output
T2
Pulse
1 s to
6500 s
0
Alarm Event
Alarm
Output
T1
Oscillator
1 s to
6500 s
1 to 6500
s
Alarm Event
Alarm
Output
T1
T2
T1
Table 3 - Timer Alarm Functions
Initial Block Alarm
The initial blocking option inhibits the alarm from being recognized if
an alarm condition is present when the controller is first energized.
The alarm will be triggered only after the occurrence of a non alarm
condition followed by a new occurrence for the alarm. The initial
blocking is disabled for the sensor break alarm function.
SPECIAL FUNCTIONS
SPECIAL FUNCTION KEY AND DIGITAL INPUT
The key (special function key) in the frontal panel of the
controller as well as the Digital Input may be assigned different
functions that will be chosen by the user during the setup. The
possible functions are:
zero
– Zero Function
Available only for the key. It resets the scale. This function is
used to eliminate the influence of interference or small deviations in
the zero of a scale. Reset is only accomplished if the value shown in
the scale is within 2% of the end of scale. Zero is not lost if the scale
is turned off.
Note: This function can be performed automatically using the
parameters
En
A.z
and
A.Z.rAn
.
Lo
– Displays Minimum
Set the key, to at the first tap, displays the minimum (Low) value
the indicator measured since the last reset. On the second tap to show
the maximum (High) measured by the indicator since the last reset. On
the third ring, returns to normal display. Press the button for more than 5
seconds to reset, and the minimum and maximum values will be
erased, starting a new cycle.
xi
– Displays Maximum
Displays the maximum (High) value the indicator measured since
the last reset.
Pkold
– Maximum value
The indicator will automatically work in the Peak Hold mode
whenever the key or the Digital Input are programmed as
“
PkoLd
”.
This mode of operation mode the indicator always shows the
maximum value measured, since the last time the key or the
Digital Input were pressed.
Each activation of the key or digital input triggers a new Peak
Hold cycle, reinitializing the reading of the display to the current value
of the measure.

N1500LC Indicator
NOVUS AUTOMATION 3/7
rSt
- Clears Maximum and Minimum
If configured with “
rSt
”, each activation of the key or digital input
clear the memory for a new cycle of maximum and minimum values.
kold
– Freeze Measured Value
The hold function freezes the measured value showed in the display.
Each time the key or the Digital Input is selected, there is a
change from hold to normal mode.
Whenever the indicator is in the hold mode, the message “
koLd
” will
be displayed so that the operator will be aware that the value
displayed is the frozen value and not the current reading.
tarE
– Tare Function
It is available only in the Digital Input configuration or through the
key. It changes indication to zero (0000.0), regardless of the
value applied to the input. It is used to eliminate indications of defined
values. In order to eliminate the tare, the user must press the
key.
AND KEYS
The same Tare function available for the Digital Input can be quickly
applied by using the key, which does not need to be set up. The
key is used to eliminate the tare applied.
The indicator accepts successive tares provided that the input signal
(gross weight) does not exceed the equipment end of scale.
PROCESS VARIABLE RETRANSMISSION
As an option, the indicator can be supplied with an isolated 0-20 mA
or 4-20 mA analog output for Process Variable (PV) retransmission.
Available at terminals 29 and 30 of the rear panel of the device.
When this option is available, the retransmission is always enabled
and does not require any user intervention.
The PV values that define the scale of the 0 mA / 4 mA to 20 mA
retransmission can be programmed by the user in the high and low
output limits (
0v.lol
e
0v.kol
),at configuration level. These limits
can be defined freely, and you can make a retransmission with
increasing or decreasing behavior toward to the indicated value.
For a voltage output signal an external shunt (calibrated resistor)
should be installed at the analog output terminals, according to your
needs.
LOAD CELL POWER SUPPLY (AUXILIARY P. S.)
The indicator provides a voltage power supply of 10 Vdc to excite
field transmitters with 50 mA current capacity. Available at the back
panel terminals 16 and 17.
CUSTOMIZED LINEARIZATION
The indicator has five types of input for non-linear signals:
c.4-20
,
c.0-20
,
c.50
,
c.-20
e
c.20
For using these signals is necessary to adopt the Custom
Linearization option. This feature combines the input signal to 30
user-defined line segments; setting two points for each segment, a
start and end and the respective display values. Thus the indication
will have a non-linear behavior set by the input signal.
The following figure shows an input signal associated with four line
segments (a,b, c, and d) causing that the resulting indication can be
approximated to the ideal value (characteristic curve). The resulting
indication is as best as the best straight segments are chosen.
Figure 2 – Custom linearization for a nonlinear signal.
Note: The non-linear input signal shall have increasing pattern.
CONFIGURATION PROTECTION
As a safety measure, parameter changes can be prevented through a
key combination performed at each level. With this protection, the
parameters are still displayed but cannot be changed.
To protect any level, just go to the level and press the keys and
simultaneously for 3 seconds.
To unlock the level, press the keys and for 3 seconds.
The display will flash briefly to confirm locking or unlocking
level.
Inside the controller, the PROT key complements the protection
function. In the OFF position, the user can do and undo the protection
of cycles. In the ON position cannot make changes, if there are
protections cycles these cannot be removed; if there is not, they
cannot be promoted.
INSTALLATION
The indicator is designed to be panel mounted. Remove the two plastic
fixing clamps from the instrument, insert the unit into the panel cut-out
and slide firmly the fixing clamps from the rear against the panel.
Recommendations for installation
•The wires of the input signals must be installed separated from
the output wires and power, if possible, in grounded conduits.
•The power supply for the instruments must be provided from an
exclusive power source.
•In controlling and monitoring applications, possible
consequences of any system failure must be considered in
advance. The internal alarm relay does not warrant total
protection.
•Use of RC FILTERS (47 R and 100 nF, serial) are highly
recommended when driving solenoids, contactor coils or other
inductive loads.
ELECTRICAL CONNECTIONS
The whole inner part can be removed without the need to make any
disconnection. Figure 3shows the connection arrangement at the rear
panel of the indicator.
Figure 3 – Back Panel Terminals
Power Connection
First check if the voltage required by the indicator is compatible with
the voltage of instrument power supply. Provide adequate protection
devices.
Figure 4 – Power Connection

N1500LC Indicator
NOVUS AUTOMATION 4/7
Input signal connection
It is important that they are very well connected, the sensor wires
must be well fixed in the terminals of the rear panel.
Figure 5 - Voltage connection
Figure 6 - Current connection
Load Cell Connection using the indicator power supply
Figure 6a – Load Cell
Digital Input (Dig In)
To use the Digital Input, a switch must be connected to respective
terminals (dry contact), as shown in Figure 7.
Figure7– Using the Digital Input
Analog output (4-20 mA OUTPUT)
The analog output may be 0-20mA or 4-20mA, selected in the
configuration. The output is available at terminals 29 and 30, as
requested in the purchase order.
OPERATION
For best results, this indicator requires correct basic setting of
parameters or a definition for parameters displayed. It is necessary to
define, for example: Type of input (0-20 mA, 4-20 mA, etc.), range
display, alarm set point, alarm function, etc.
To make configuration easier, the parameters are divided in five
levels (or groups):
Level
Access
1- Work
Free access
2- Alarms
Reserved access
3- Special Functions
4- Input Setting
5- Customized Linearization
6- Calibration
7- Automatic Calibration
Table 4 - Parameters Levels
The work cycle has free access. All other levels require a certain
combination of key strokes to be accessed. The combination is:
and keys pressed simultaneously
Once within a cycle, just press to move to the subsequent
parameters of this cycle. At the end of each cycle the display will go
back to the work cycle.
At the desired parameter, just press the buttons or to
promote the desired changes. These changes are saved into
protected memory and given as valid when we move to the next
parameter.
After 25 seconds with no key pressed the indicator will return to the
Measurement screen at work cycle.
PROGRAMMING THE INDICATOR
WORK LEVEL
This is the first level. At power up the indicator will display the Process
Variable (PV). The alarm triggering points are also displayed at this level
(alarm Setpoints). To advance in this level simply press .
SCREEN PARAMETER DESCRIPTION
8.8.8.8.8.
Screen Measures - Shows the variable measured
according to the limits defined in the “
in.LoL
” and
“
in.kiL
” screens.
Should any failure occur, the indicator will display an
error message.
Al.ref
Differential alarm reference value - This screen is
shown only when there is an alarm programmed with
differential function. This value is used as a
reference for differential alarms triggering.
Sp.al1
Sp.al2
Sp.al3
Sp.al4
Alarms Set Points 1, 2, 3 and 4- Defines the
operation point of each alarm programmed with “
Lo
”
or “
ki
” functions.
Note
: For alarms programmed with differential
functions, the alarm SP value cannot be changed,
and the “
diF
” message is displayed. The value of
differential SP (deviation) is defined in the Alarms
Cycle.
NOTE:
The SP adjustment parameters are
presented only if the corresponding alarm function is
configured.
ALARM LEVEL
fV.al1
fV.al2
fV.al3
fV.al4
Alarm Function - Defines the alarm functions: 1, 2,
3 or 4, as defined in item 4.1.
oFF
: Alarm off
Err
: Broken or Shorted Sensor
Lo
: Low value
ki
: High value
DiFL
: Differential low
DiFH
: Differential high
DiF f
: Differential outside the range
DiF d
: Differential within range
Ky.al1
Ky.al2
Ky.al3
ky.al4
Alarm Hysteresis
Defines the difference between the value at which
the alarm is turned on and the value at which it is
turned off.
Bl.al1
Bl.al2
Bl.al3
bl.al4
Initial Blocking Function
It makes possible to prevent alarms activation at the
process start, when all the system is powered. See
item 4.3.
Al1t1
Al1t2
Al2t1
Al2t2
Al3t1
Al3t2
Al4t1
Al4t2
Alarm Timer Function
Sreens that define time T1 and T2, in seconds,
shown in Table 3. They allow the user to delay the
alarm triggering, to activate alarms momentarily or
sequentially.
To disable timer function, just set zero for T1 and T2.

N1500LC Indicator
NOVUS AUTOMATION 5/7
FUNCTION LEVEL
f.fvnc
F Key function –Makes possible to define the F
key function. Available functions:
oFF
- Key not used.
kold
- Hold PV
RSt
- Resets Maximum and Minimum values
PkoLd
- Peak Hold
XI
- Displays maximum
LO
- Displays minimum
ZERO
-Automatic zero
These functions are described in item 5.
Dig.in
Digital Input Function - Makes possible to define
the digital input function. Functions available are the
same as the ones available for the F key, except for
the Zero function, replaced by the Tare function.
oFF
-
kold
-
rSt
-
PkoL -
–
XI - LO -
tare
These functions are described in item 5.
filtr
Input Digital Filter
- Used to reduce the noise in the
measured value. Adjustable from 0 to 60. 0 means
the filter is off and 60 means maximum filtering. The
filter slows down the response of the measured
value.
ofset
Displayed offset - Added value to the measured
value to correct the offset. Expressed in the unit
configured input type.
En A.z
Enables Auto zero
– Enables the auto-zero function
of the indication. The indication will turn to zero if the
input value is within the programmed range in
A.Zran
for 3 seconds.
Auto-zero occurs when the indication is relatively
stable. It is used to eliminate th
e influence of
interference or small deviations in the zero of a scale.
A.Z.rAn
Maximum level for zero – Maximum level of the
scale zero deviation, where auto-zero is activated.
This value can be programmed up to 2% of the end of
scale.
Bavd
Communication Baud-Rate - Transmission baud
rate used in serial communication (RS-485) in bps
and kbps.
1200, 2400, 4800, 9600, 19200, 38400, 57600,
115.2. (NONE parity) 1.2P, 2.4P, 4.8P, 9.6P, 19.2P,
38.4P, 57.6P e 115.2P (with EVEN parity).
Adres
Communication Address - A number that identifies
the instrument in a communication network.
CONFIGURATION LEVEL
In.typ
Input Type - Selects the input signal or sensor type
to be connected to the PV terminals. Refer to Table
1for options.
Changing the input type causes all other parameters
related to PV and alarms to be changed as well,
therefore, this parameter shall be the first to be set.
Dp.pos
Decimal Point Position - Determines the position of
the decimal point in the display.
scale
Parameter that defines the limits of indication of
entries.
0
– Configurable indication from –
31000 to +
31000.
1
– Configurable indication from 0 to + 60000.
2
– Configurable indication from 0 to +120000,
showing only even values.
The PV values, SP Alarms and Offset also obey
these limits.
In.lol
Input Low Limit - Determines the minimum limit for
input signals. The band created can be ascending or
descending characteristic in relation to the input
signal behavior.
In.kil
Input High Limit - Determines the maximum limit
for input s
ignals. The band created can be
ascending or descending characteristic in relation to
the input signal behavior.
Ovt.ty
Analog Output Type - Allows selecting the type of
signal available on the analog output: 0-20 mA or 4-
20 mA.
ov.lol
Output Low Limit
Low Limit for analog retransmission –
Determines the display value corresponding to an
electric current of 4 mA (or 0 mA).
0v.kil
Output High Limit
High Limit for analog retransmission - Defines
the PV value that results in a 20 mA analog output
current.
Ovt.er
Output error
Error signaling for 4-20mA output - Configure the
state of the analog output when an error occurs in
the retransmission (beginning or end of the scale).
CUSTOMIZED LINEARIZATION LEVEL
Inp.01
Inp.30
Defines the extreme points of the customized
linearization. Values must be in the input signal unit.
Ovt.01
Ovt.30
Defines the proportional indications in respect to
each segment of the customized linearization.
Values are in the intended indication unit.
CALIBRATION LEVEL
All input and output types are factory calibrated, and we recommend
not making any calibration procedure. This level should only be
accessed by experienced personnel.
If this level is accidentally accessed do not touch the or
keys, go through all the screens until you return to operating cycle
(operation).
In..lo(
Zero Input Calibration - It allows you to calibrate
the offset of PV. You can increment or decrement
the desired value tapping the keys and .
In.ki(
Span Input Calibration - Sets the gain of PV.
Ov.lo(
Zero Calibration for the Analog Output -Value for
the analog output offset (0 or 4 mA).
Ov.Ki(
Analog Output Span Calibration – Value for gain
calibration of the analog output (20mA).
k.type
Hardware Type - Parameter to adjust the indicator
to the type of available hardware. Should not be
changed by the user, except when a new accessory
is inserted or removed.
2 Alarms ..............................................code 3
2 Alarms and 4-20 mA.......................code 19
2 Alarms and RS485 .........................code 35
2 Alarms and 4-20 mA and RS485....code 51
4 Alarms ............................................code 15
4 Alarms and 4-20 mA.......................code 31
4 Alarms and RS485 .........................code 47
4 Alarms and 4-20 mA and RS485....code 63
AUTOMATIC CALIBRATION LEVEL
Specific calibration for weighing systems, where the user himself
performs the calibration of their system, using two reference weights,
minimum and maximum, and setting their indication values.
To access this cycle press and keep pressed and for 30
seconds.

N1500LC Indicator
NOVUS AUTOMATION 6/7
A(all
Minimum weight automatic calibration – This
parameter defines the value to be displayed when the
minimum reference weight is applied. See the section
Performing Auto Calibration.
A(alk
Maximum weight automatic calibration –This
parameter defines the value to be displayed when the
maximum reference weight is applied. See the section
Performing Auto Calibration.
Table 5 shows the sequence of levels and parameters presented in the indicator display. There are parameters that must be defined for each alarm
available.
WORK LEVEL ALARM LEVEL FUNCTION LEVEL
CONFIGURATION
LEVEL
CUSTOMIZED
LINEARIZATION LEVEL
CALIBRATION
LEVEL
AUTOMATIC
CALIBRATION LEVEL
8.8.8.8.8.
*Fv.al1
f.fvn(
In.typ
Inp.01 - inp.30
In.lo(
A(all
Al.ref
*Ky.al1
Dig.in
Dp.pos
OVt.01 - ovt.30
In.ki(
A(alk
*Sp.al1
*Bl.al1
Filtr
Scale
Ov.lo(
*Al.1t1
Ofset
In.lol
Ov.ki(
*Al.1t2
En a2
In.kil
k.type
A2 ran
OVT.TY
Bavd
ov.lol
Adres
Ov.kil
OVT.er
Table 5 - Sequence of levels and parameters displayed by the indicator
*Parameters that require definition for each available alarm.
PROBLEMS WITH THE INDICATOR
Connection errors or improper configuration will result in
malfunctioning of the indicator. A final review can avoid wasting time
and losses.
The indicator some error messages will help the user identify
possible problems.
MESSAGE PROBLEM DESCRIPTION
VVVVV Measured va
lue is above the value allowed for the
selected sensor or signal limit.
nnnnn
Measured value is below the value allowed for the
selected sensor or signal limit.
----- Open input. No signal.
Other error messages shown by the indicator must be reported to the
manufacturer. Inform the serial number if this should occur. The serial
number can be viewed at the display by pressing the key for
about 3 seconds.
The software version of the instrument can be viewed at the time the
unit is powered.
When not properly configured, the instrument may show false error
messages, particularly those related to the type of input selected.
SPECIAL RECOMMENDATIONS
Should the indicator be repaired, some special handling care should
be taken. The device must be withdrawn from the case and
immediately placed in an anti-static wrap; protected from excessive
heat and humidity.
INPUT CALIBRATION
An appropriate framework should be available for calibration of
equipment capable of providing the electrical signals needed with the
required accuracy.
When recalibration of some type of input is required, proceed as
described below.
a) Set the indicator for the input type to be calibrated, see Table 1;
b) Program the desired upper and lower display limits (
in.lol
and
in.kil
) with limits on the type of configured input, see Table 1;
c) Access the parameter “
inLo(
” and applied to input a signal
corresponding to a known value and slightly above of the lower
limit.
d) Set the indicated value using the keys and to adjust
the expected value for the applied signal.
e) Access the parameter “
inki(
” and applied to input a signal
corresponding to a known value and slightly below of the upper
limit.
f) Set the indicated value using the keys and to adjust
the expected value for the applied signal.
g) Exit the calibration cycle and verify that the calibration became
adequate. Repeat c to f until no new adjustment is necessary.
AUTOMATIC CALIBRATION
To perform automatic calibration, the system must already be
installed and configured with the input type and range already
defined.
a) Access the Auto Calibration cycle and the parameter
A(all”
.
b) Put on the load cell the minimum reference weight and wait to
stabilize.
c) Adjust the parameter
A(all”
to display the desired value.
d) Press the Pbutton to save this value and advance to the
parameter
A(alk
.
e) Put on the load cell the maximum reference weight and wait to
stabilize.
f) Adjust the parameter
A(alk
to display the desired value.
g) Press Pto save this value and terminate the procedure. At this
time the indicator will show the weight on the load cell.

N1500LC Indicator
NOVUS AUTOMATION 7/7
SERIAL COMMUNICATION
The indicator can be supplied with an asynchronous RS-485 digital
communication interface for master-slave connection to a host
computer (master). The indicator always works as a slave.
Communication is always initiated by the master, which sends a
command to the slave address with which to communicate. The
addressed slave takes over the line and sends the requested reply.
The indicator accepts broadcast commands (addressed to all
instruments of the network). In this type of command, the indicator
does not send any response
The N1500LC uses signals compatible with the RS-485 standard
allows 2-wire connection with a master and up to 31 indicators (and
can address up to 247) with bus topology. Maximum connection
distance: 1000 meters. Indicator off time: Maximum 2 ms after the
last byte.
Communication signals are electrically isolated from the rest of the
device, with selectable baud rate between 1200, 2400, 4800, 9600,
19200, 38400, 57600 and 115600 bps.
•Number of data bits: 8 with no parity or even parity. Number of stop
bits: 1
•Response start time: maximum 100 ms after receiving the
command.
•Protocol: MODBUS (RTU)
Signals from the RS-485 interface are:
D1 = D: Bidirectional data line.
D0 =
D:
Inverted bidirectional data line.
C = GND: Optional connection. Improves communication
performance.
In case the host computer does not have an RS-485 interface
integrated shall be used an external RS232 ↔RS485 converter.
Two parameters must be configured to use the serial communication
interface: Communication Baud Rate (
bavd
parameter) and
Communication Address (
adres
parameter).
SPECIFICATIONS
DIMENSIONS: 48 x 96 x 92 mm (1/8 DIN). Approximate weight:
250 g
PANEL CUT-OUT: .................................... 45 x 93 mm (+0.5 -0.0 mm)
POWER: .................................... 100 to 240 Vac/dc (±10 %), 50/60 Hz
Optional 24 V:..................... 12 to 24 Vcc / 24 Vca (-10 % / +20%)
Max. Consumption:............................................................. 7.5 VA
ENVIRONMENTAL CONDITIONS:
Operating temperature:................................................. 5 to 50 °C
Maximum RH:..................................................... 80 % up to 30 ºC
For temperatures above 30 ºC, decrease 3 % per ºC
For indoor use; Installation category II, pollution degree 2;
altitude < 2000 m
INPUT................Voltage and Current; configurable according Table 1
Internal resolution: ................................................ 128000 levels
Display resolution: .................................................. 62000 levels
Input sample rate:.................................. 15 samples per second
Accuracy: ...............................................................0.2 % of span.
Input impedance:............................................. 0-50 mV >10 MΩ
................................. 0-20 mA, 4-20 mA: 15 Ω(+2 Vdc @ 20 mA)
ANALOG OUTPUT: ........................0-20 mA or 4-20 mA, 550 Ωmax.
. 4000 levels, Isolated, for control or retransmission of PV and SP
RELAY OUTPUT: ALM1 and ALM2: SPDT: 3 A / 240 Vac (3 A / 30 Vdc
Res.)
. ALM3 and ALM4: SPST-NA: 1.5 A / 250 Vac (3 A / 30 Vdc Res.)
AUXILIARY VOLTAGE SUPPLY: .............. 5 or 10 Vdc, ±1 %, 35 mA
EMC:................................EN 61326-1:1997 and EN 61326-1/A1:1998
SAFETY: ...........................EN61010-1:1993 and EN61010-1/A2:1995
CONNECTIONS SUITABLE FOR TERMINAL TYPE FORK 6.3 MM
FRONT PANEL: POLYCARBONATE UL94 V-2; CASE: ABS + PC
UL94 V-0
STARTS OPERATION AFTER 3 SECONDS CONNECTED TO
POWER
IDENTIFICATION
N1500LC - 4R - RT - 485 - 24V
A B C D E
A: Model N1500LC –Version dedicated for load
cells
B: Relays outputs blank (2 relays) or 4R (4 relays)
C: Analog output RT – (retransmission of PV in mA) or
blank
D:Digital Communication 485 – (RS485, ModBus protocol) or
blank
E: Power Supply blank (100-240 Vac/dc) or 24V (24
Vdc/ac)
WARRANTY
Warranty conditions are available on our website
www.novusautomation.com.br/warranty.