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80290C_MHW_2400_0908_ENG
Graphic symbols used
To distinguish between the type and importance of the information provided in these instructions for use, graphic
symbols have been used as a reference to make interpreting the information clearer.
Indicates the contents of the various manual sections,
the general warnings, notes, and other points to
which the reader's attention should be drawn.
Indicates a particularly delicate situation that
could affect the safety and correct working
operation of the controller, or a rule that must be
strictly observed to avoid dangerous situations
Indicates a condition of risk for the safety of the
user, due to the presence of dangerous voltages
at the points shown
Indicates a suggestion based on the expe-
rience of the GEFRAN Technical Staff,
which could prove especially useful under
given circumstances
Indicates a reference to Detailed Technical
Documents available on the GEFRAN web
site www.gefran.com
1 • PRELIMINARY INSTRUCTIONS
This section contains information and warnings
of a general nature which should be read befo-
re proceeding with controller installation,
configuration and use.
General Description
The instrument is appropriate for acquisition of signals
with high variation speed. It has two main analog inputs
for many applications, including differential measure-
ments. The inputs are configurable from the keyboard
and accept standard linear signals (and custom lineari-
zed signals), as well as signals from pressure probes,
load cells, potentiometers, TC, RTD.
They offer an exclusive combination of performance,
reliability, and applicative flexibility. In particular, this
new line of Gefran indicators/alarm units is the ideal
solution for sectors demanding high performance and
continuity of service, with:
• pressure measurements and setpoints on extrusion
lines and injection presses for plastics
• pressure measurements and setpoints
(absolute or differential)
• position measurements and setpoints
• variable setpoints in fast processes and automations,
with retransmission
The instrument also has 2 digital inputs for reset, calibra-
tion, and hold functions.
The outputs (up to 4) are relay or logic, and are configu-
rable.
An MD8 expansion is available as an alternative to out-
puts 3 and 4 for 8 additional setpoint outputs.
An optional, high-resolution, optically isolated analog out-
put is available for analog retransmission, process varia-
ble value, peak value, setpoint, differential value.
Indicator/Alarm unit in Basic Version
(mod. 2400-0-0-4R-0-X)
• 1 universal input for strain gauge,
potentiometer, TC thermocouples, RTD 2/3 wires and
linears in current and voltage with accuracy better
than 0.1% f.s.
• 2 auxiliary inputs for linears in current and voltage,
potentiometers
• 1 power supply for transmitters
• 2 digital inputs configurable NPN or PNP
• 1 probe power supply selectable for strain gauge,
potentiometers and transmitters
• 4 outputs: OUT1, OUT2, OUT3, OUT4 relay
Options
• second universal input
(useful for differential measurements)
• 1 analog retransmission output
• 1 RS485 optically isolate serial interface
• MD8 expansion interface as alternate to outputs 3
and 4.
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