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
.
Figure 7
– 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.