NOVUS FieldLogger Register - Manual (Page 4)

FieldLogger Register
NOVUS AUTOMATION 4/8
DIAGNOSTIC PAGE
In this screen, the user visualizes how measured variables behave.
Channels are presented with values measured (updated at every
second), names, units, status and alarms triggered.
Information about the logger such as serial number, version and
operation status are also displayed.
It is possible to apply digital filters to input channels using this
screen. These filters are intended to reduce oscillations in readings.
Intensity can be adjusted from 0 to 9 and the factory set is level 3. It
is also possible to display the local power supply frequency so that
derivative oscillations are minimized.
Figure 5 – Diagnostic screen
INSTALLATION
The logger has two terminal lines for input connections, power
supply, backup power supply (V
BAT
), digital input and serial
communication.
Ch.1 Ch.2 Ch.3 Ch.4
RS-485 V BAT.
DIG.IN
Figure 6 - Upper side connections
Ch.5
POWER
Ch.6 Ch.7 Ch.8
Figure 7 - Lower side connections
INSTALLATION RECOMMENDATIONS
♦ Input signal leads must be installed in grounded conduits and
away from power or contactor wires.
♦ Instruments must be powered only by an exclusive power
supply.
♦ Installing RC filters (47
Ω
and 100nF, serial) is strongly
recommended at contactor coils or any other inductors.
♦ System failure should always be taken into account when
designing a control panel to avoid irreversible damage to
equipment or people. The ALM1 and ALM2 output relays, used as
alarms, do not warrant total protection.
♦ Wires section: minimum gauge 0,14 mm².
ELECTRICAL CONNECTIONS - INPUTS
Figure 8 - Thermocouples Figure 9 - Pt100
Figure 10 - Current (4 to 20 mA) Figure 11 - Voltage (0 to 50 mV)
ELECTRICAL CONNECTIONS – POWER SUPPLY
Terminals 19 and 20 identified with POWER show the main power
supply of the logger. As a backup power supply, in V
BAT,
terminals 14
and 15, an extra power supply of +6 to +24 Vdc can be connected so
that the device can continue measuring and logging operations in the
failure of a main power supply.
While using the V
BAT
supply the logger can not use the serial
communication and does not trigger ALM1 and ALM2 outputs.
ELECTRICAL CONNECTIONS – ALARMS AND DIGITAL INPUT
ALM1 and ALM2 outputs, terminals 21, 22, 23 and 24, correspond to
relays used by alarms. NA contacts are available, with load capacity
of 3 A / 250 V.
A dry contact device should be used (switch, relay etc) in digital
inputs, terminals 13 and 14. When the contact is closed, the digital
input is triggered.
Notice that when a digital input terminal is common to the V
BAT
negative it can be concurrently used to both ends.
OPERATION
After configuration and installation the logger is ready to use. When
you turn on the logger, the LOGGING indicator flashes in the front
panel, this indicates that the logger is operating properly. It will flash
once at every 2 seconds when it is not logging and twice at every two
seconds when logging (model with memory). Acquisitions start and
end according to what was defined during configuration. The speed
of input channels readings depends on the number of channels
enabled and type of input programmed for each channel.
The logger starts readings immediately after it is turned on. Current
values found are temporarily stored in internal registers. The logger
sends the content of its internal registers when the supervisory
software requires.
In the front panel there are two indicators that show when the logger
is communicating with the external world. When the Rx indicator is
turned on, it means that the device is receiving data; the Tx indicator
shows that data are sent outside through serial interface.
ACQUIRED DATA COLLECTION
For the collection of data logged in local memory, it is necessary to
use FieldChart or Superview software, or to build an application in a
supervisory software whose version supports the specific driver.