Load-Cell Interface Card LCIC®
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 .
