[Indra_Ang]

Hi All,

I am having a problem with our MELDAS FCA 321 controller which used for AMADA FBD5020 press brake.

The current problem is we couldn't get the monitor and keyboard control unit to power on while the MELDAS FCA321 seems to give all green indicator.

Anyone have schematic diagram for the MELDAS FCA 321 or have clue or know what to do please let me know, thanks in advance.

Warm regards

Indra Ang

[DarrylO]

Hi Indra,

Having a similar problem, did you ever get an answer with this?

Cheers
Darryl

[MrMetric]

Darry,
Modern CNC machines have two components: a machine and a control. The control is built by Mitsubishi, in this case, and the machine is built by Amada. Now, Amada acted as the integrator, so all of the "glue" to interface the machine to the control is in the domain on Amada. You will never find a Mitsubishi manual that covers that because Mitsubishi was not part of that process. A modern CNC control typically has all of the firmware to understand how to move axis, is integrated with a servo system (or whatever), and a bunch of input and output pins. But those input and output pins don't do anything until someone (the integrator) assigns them to different uses. Part of that process is to create a PLC using "ladder logic." This basically binds the input pin to a particular function.... For instance, when you press that button on the front panel, instead of causing a rapid move, it turns on the coolant. Both are just inputs to the control until the integrator does the work to bind the input to a function.

Now, the reason why I wrote that simplified "what is a cnc" description is to help understand where documentation must be sourced.... The machine wiring is squarely in the realm of the integrator (Amada). Even the assignment of input and output pins is in their domain. And the PLC is also theirs. So you will need to get that type of documentation from Amada. However, if you are looking for Mitsubishi component wiring diagrams, how you set baud rates, and that type of thing, then you go to the Mitsubishi manuals. Fortunately, Mitsubishi has a pretty decent, and free, website for manuals, etc. It is at www.meau.com but you'll need to dig around in the service area to find the appropriate links. You'll also need to create a (free) account. If you are in the US then you will be able to get to that website. However, I believe they have a regionalization filter that will preclude you from accessing the site if you are outside the US. And I've been told that the regional Mitsu websites are not nearly as helpful as the US one. So, you may need to find a VPN with a US address to get the US meau site.