User Manual

I use a LD5218 indicator for weighbridge at work but I have no user and technical manual. How can I get an ID for your customer section?

Answer:

First of all you should attend to your supplier (our distributors) of this product you bought.
If they are not in a place to give you, you have to send by e-mail your full details of your company and we will provide you by an ID code for the user manuals.

For the technical manual our policy is to give it only to our distributor, which means that they should support you by any details you might need.

 

Junction box – Load cells - Indicators

I would like to know if just by connecting the load cells to your a/d junction box, I'll have a digital output; can I get a manual of such systems? What indicator you use for such application (digital weighing bridges-truck scales)? If I allocate a wireless serial modem to your digital junction box, can I receive ascii characters on the other end (is there also a way of energizing locally the junction box without running wires from the indicator)?

Answer:

We have never used a serial wireless modem to connect to an indicator in an industrial area but we do not find any reason why it shouldn't work (we used an rs232-> ethernet converter and is working with no problems).
We think it will work fine but you have to use a wireless modem with good quality and select properly the frequency the wireless modem is using for communication.

Have in mind that shielded communication wires have less interference in an industrial space than wireless communication and that most of our products such DWI or DJB comes with an RS485 port (you will might need a converter RS485->RS232).

 

DJB-4

We have a question regarding the communication to the DJB-4.
We where making stress test of our application and found some error messages in the manual that we could find no reference for anywhere else in the manual. I would like to know if the errors 1, 2 and 3, are limited to only appearing in a special mode or if they can appear when we do the general polling of the DJB-4.
I would also like to know if we should send an "ACK" to accept the error and continue, or if we should reset the DJB-4.

Answer:

Error 1 shows a bad Rom (code) memory.
You have to acknowledge the error for the DJB to continue.
Error 2 shows a bad internal ram memory.
You have to acknowledge the error for the DJB to continue.
Error 3 not found it ... Are you sure for the error number?

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.

 

Compression load cell

The wiring details are:

White + = + Sig
Red - = - Sig

Green + = + Ex
Black - = - Ex

Yellow = SHLD