N1540
NOVUS AUTOMATION
4
OPERATION
The front panel can be seen on
Figure 7
:
Figure 7 –
Identification of the front panel parts
Display
: Shows the process variable
PV
, the configuration
parameters prompts and their respective values/conditions.
Indicators A1 and A2
: Signalize the occurrence of an alarm
condition.
Key P
: Used to walk through the parameters in the menu cycles.
F1 /
key and F2 /
key
: Used to change parameter values.
Key
: Used to back to the previous displayed parameter.
START-UP
When the digital panel meter is powered up, the digital panel meter
displays the number of the software version in the first 3 seconds,
then the value of the measured process variable (PV) is shown in the
display. This is the
Indication Screen
.
To be used, the digital panel meter must be previously configured.
The configuration consists of the definition of each of the various
parameters displayed. The user must understand the importance of
each parameter and determine a valid condition or a valid value for
each one of them.
The configuration parameters are grouped in levels according to their
affinity. The 5 parameters levels are:
– Operation
– Alarms
– Input
– Linearization
– Calibration
The
P
key provides the access to the levels and to the parameters of
these levels.
Keeping the
P
key pressed, at every 2 seconds, the digital panel
meter jumps from one level to another, presenting the first parameter
of each level:
PV >>
fva1
>>
type
>>
l.enbl
>>
pass
>> PV …
To enter a particular level, simply release the
P
key when the first
parameter in that level is displayed.
To walk through the parameters in a level, press the
P
key with short
strokes. To go back to the previous parameters, use the
Key.
After the last parameter of the cycle, the digital panel meter always
returns to the
PV Indication
screen.
The display alternates the presentation of the parameter prompt and
its value. The parameter value is displayed with a light blinking to
differentiate it from the parameter prompt.
Depending on the level of parameter protection adopted, the
PASS
parameter precedes the first parameter in the level where the
protection is active. See
section.
PARAMETERS DESCRIPTION
OPERATION CYCLE
PV
PV Display Indication
. The value of the measured
variable (PV) is shown on the upper display (red).
Sp.a1
Sp.a2
Setpoint
Alarm
Alarm SP. Value that defines the alarm activation point.
For the alarms set up with the
Differential
functions,
these parameters define the maximum differences
accepted between
PV
and a reference value defined in
the parameter
ALrF
.
For the
ierr
alarm function, this parameter is not
used.
Parameters shown in this level only when enabled in
the
sp1.E
and
sp2.E
parameters.
ALARMS CYCLE
Fva1
Fva2
Alarm functions. It defines the functions of the alarms
among the options in
Table 2
.
al.rf
Alarm
Reference
Reference value used for the alarms with differential
function, minimum differential, or maximum
differential.
Sp.a1
Sp.a2
Setpoint
Alarm
Alarm SP. Value that defines the point of activation of
the alarm outputs. For the alarms programmed with the
Differential
functions, these parameters represent the
deviations.
For the
ierr
alarm function, this parameter has no
meaning.
Sp1.e
sp2.e
SP Enable
It allows the SPA1 and SPA2 parameters to be
displayed also in the Operation Cycle.
YES
Shows the SPA1/SPA2 parameters in the
Operation Cycle.
NO
Does not show the SPA1/SPA2 parameters
in the Operation Cycle.
bla1
bla2
Blocking
Alarm
Alarms Initial Blocking.
YES
Enables the initial blocking.
NO
Inhibits the initial blocking.
xya1
xya2
Hysteresis of
Alarm
Alarm hysteresis. It defines the difference between the
value of PV at which the alarm is triggered and the
value at which it is turned off.
flsh
Flash
It allows signalization of an alarm conditions occurrence
by flashing the PV indication on the indication display.
YES
Enables alarm signalization by flashing
PV
.
NO
Disables the flashing
PV
.
INPUT CYCLE
Type
Type
Input Type. Selection of the input type, used by the
digital panel meter. Refer to
Table 01
.
fltr
Filter
Digital Input Filter. Used to improve the stability of the
measured signal (PV).
Adjustable between 0 and 20. At 0 (zero) it means filter
turned off and at 20 means maximum filter. The higher
the filter value, the slower is the response of the
measured value.
Dp.po
Decimal Point
It determines the position of the decimal point on the
display.
vn
i
t
Unit
It defines the temperature unit to be used:
(
Indication in Celsius.
f
Indication in Fahrenheit.
0ffs
Offset
Parameter that allows the user to make fine
adjustments to the indicated PV value.
