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Weighing Electronics – Indicators and Controllers |
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LD 5204
Scale is 2 multi range max=300/600kg d=100/200g and 4 load cells Flintec SB14 454kg.
When I put load 100kg on load receptor the instrument LD5204 indicate 100,0 kg, then I live load on load receptor for 2 hours and temperature in room rise for 4°C the instrument LD5204 after that indicate 100,4 kg.
Why the indicator is not temperature stable and what do you propose?
Answer:
The LD5204 weight indicator has excellent drift behaviour that is why it has a min signal per vsi of 0.4μV.
Make sure that Par 8.8 =0 in the scale parameter and calibration menu so that ac excitation is selected and the connectors have been soldered correctly.
What you observe is the combined effect of temperature effect on zero / sensitivity and CREEP of the load cell and the indicator.
I found out that you have mistake in program because Par 8.7 (load cell amplifier gain adjustment) is 4mV/V and when we change on 2mV/V it nothing happen.
When we check internal A/D count (Fn 81) indicate the same value for Gain 10mV or 20mV.
Answer:
Par 8.7=0 selects 2mV/V (in fact -0.25 to +1.75) and Par 8.7=1 selects 4mV/V (in fact -0.25 to +3.75).
To maintain calibration (electronic or with weights) compatibility, the internal resolution is automatically adjusted according to gain.
So you should see very little difference when you change the gain.
LD 5206
I have written a program to collect weighbridge data and have a Leon LD5206 weigh indicator.
I have configured the LD5206 to transmit Alibi data but I am not sure how to send a request from my PC serial port to the LD5206.
I assumed that I need to transmit a character to the LD5206, but not able to find out which. Can you please advice?
Answer:
There is no command to upload a specific alibi record from the indicator or even the last alibi record.
You can only set the indicator in the alibi mode and get the printed data in each weighing form the printer port (com1)
You can also print all the alibi memory or a specific record from function menu.
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