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.
Hi Indra,
It could be one of several issues. Here are a few potential steps to troubleshoot:
1.Check Power Supply:
Even though the MELDAS FCA 321 shows green lights, the power supply to the monitor and keyboard might be separate or there could be an internal fuse for these peripherals that’s blown.
Check if there's a dedicated power supply for the monitor and keyboard unit, or if there are loose connections.
2.Inspect Cables and Connectors:
Loose or damaged cables could easily cause the monitor and keyboard not to power up. Double-check the connectors between the FCA 321 controller and the display/keyboard.
Make sure no pins are bent or broken in the connectors.
3.Monitor and Keyboard Check:
Verify that the issue isn’t with the monitor or keyboard themselves by connecting them to another compatible system to ensure they power on.
4.Internal Circuit Issue:
If you have access to the system’s internals, check for any damaged components like capacitors on the board near the connections for the monitor and keyboard.
5.Schematic Diagrams:
Unfortunately, the schematic diagram for the MELDAS FCA 321 controller is often proprietary, and you might need to contact Mitsubishi (who made the MELDAS controllers) or AMADA for a copy.
However, reaching out to specialized forums for AMADA press brakes or CNC controller repairs might help you locate a copy from someone who’s worked with the same system.
6.Firmware or Software:
It's rare, but sometimes software or firmware issues can cause peripherals like the monitor or keyboard to not function. If you have access to any firmware or software reset procedures for the FCA 321, it might be worth trying.
If none of these steps work, you might want to consult with AMADA’s technical support for more specific troubleshooting related to the MELDAS controller.
Reply with Quote
MELDAS FCA 321 controller problem
Re: MELDAS FCA 321 controller problem
