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Load-Cell Interface Card LCIC® |
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PDF Version
For PC/AT or
Compatibles
Any application related
to weighing or measuring forces is now
available in your PC...
Stand-alone microcomputer-based interface
card requires no other interfacing
accessories. Simply connect the cable
from each scale directly to the card and
you are ready.
- Compatible with
all load cells and other strain
gage-based transducers.
- Replaces all
conventional weight indicators.
Card resides directly on computer
bus, thus eliminating RS232 and
other communication ports.
- Suitable for all
dynamic, force measuring and real-time
applications.
- Ultra-fast A/D
conversions - 500 per second
after filtering.
- Optional I/O card
- eight outputs and four inputs
all opto-isolated.
- Up to 16 cards may
be installed in one PC.
- User-friendly easy
calibration from the PC keyboard.
- Very useful
software package of weighing
indicator, counting scale and
checkweigher as well as examples
on how to access the board are
all included.
The LCIC-1106a is a
load cell interface for the IBM
PC/AT and compatible computers.
It will accept any type of strain
gage-based load cell. Each card
powers directly up to six load
cells (350 W each).
In fact, it is
a completely stand-alone
sophisticated weighing indicator
with 16 bit internal resolution
and very fast A/D conversion rate.
Direct
communication with the PC bus and
high frequency sampling enable
the LCIC-1106a to handle real-time
applications impossible with
external indicators via serial
communication.
Typical
Applications
- Gravimetric
filling systems.
- Batching
controllers.
- Weigh belt and
loss-in-weight controllers.
- High speed
checkweighers.
- Multi-scale
processing - by using more than
one LCIC.
- Weighing in motion
(such as trucks on the roads).
- Mutil-head filling
machines.
- Peak detector and
analyzing forces in press
machines.
Main
Features
- User-friendly
calibration procedure with
automatic zero and gain
adjustment.
- Calibration
parameters reside in the LCIC
memory and are retained even if
the card is moved from one PC to
another.
- Calibration
library. Different calibrations
for various scales may be stored
in a library for later use on the
same card.
- No auxiliary power
supply is required. The LCIC
powers and senses 6-wire load
cells.
- Provides data in
weighing units (kg, gr, lb, ton)
in ASCII or floating point -
usable by almost any programming
language.
- Opto-isolated I/O
lines enable logic control
through user's application
program.
Software
Included
- Mapping memory
diagnostics - for easy address
selection to install the card.
- User-friendly
calibration software.
- I/O check and test
procedure built into the
calibration software.
- Software to
utilize the PC as a weighing
indicator, counting scale,
checkweigher and filling machine.
- Examples in source
code on how to access the card.
- Drivers for Win 95/98,
Win NT and examples in VB and C++.
Hardware
Specifications
- Excitation voltage:
8.2 VDC.
- Internal A/D
resolution: 16 bit.
- Internal A/D
conversion time: 4000 per second.
- PCB type:
multilayer (six layer).
- Power consumption
(without load cells): 350mA max @
+5V.
- Updating the PC
bus speed: 500 per second.
- L/C range: from 0.2 mV/V up to 3mV/V load
cells.
- Number of load-cells:
Up to 6 in parallel (350 ohm each).
- Load cell
conection: 6 wires(sense)-One 9
pin D type connector.
- Method of
communication with the PC BUS:
Memory mapped.
- Maximum number of
LCIC-1106a boards in a PC: 16.
- Length of cable
between the LCIC and the load
cells:150 meters.
- Option for RS232
output from the card to remote
display .
Optional
I/O Module: (LCIC "Piggyback")
- Opto-isolated I/O
lines enable logic control
through user's application
program.
- Four inputs - sink
or source connection., Maximum
transistor current at 30 VDC 12
mA.
- Eight outputs -
current source connection 5-30
VCD maximum 80 mA.
Dimensions:
- Board length: 220mm.
- Weight: LCIC-1106a:
200 gr I/O Module: 80 gr .
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