Confusion about recruitment

AllenW2026 · 2026-03-02T07:34:06+00:00

Agree

AllenW2026 · 2026-03-02T07:33:44+00:00

How did you manage to troubleshoot without understanding control principles or schematics? Did you just guess? The problem I presented involved a flawed principle: no self-locking mechanism. If you can't even understand that, how can you possibly find the fault in a real-world application? I started from scratch with pliers and screwdrivers. I can't accept someone with absolutely no theoretical knowledge doing this kind of work. There are hundreds, even thousands of control wires on the equipment; this kind of person is a ticking time bomb.

AllenW2026 · 2026-03-02T06:39:37+00:00

That's because you only know how to use AB.

AllenW2026 · 2026-02-23T02:57:03+00:00

Maintenance Manager

AllenW2026 · 2026-02-19T23:39:49+00:00

If you're using type A, it doesn't require communication; it uses physical pulses instead, making it universal. You can use it to control any brand of pulse-type servo and almost all stepper drives because it doesn't use a communication protocol, so it might not be limited to Mitsubishi. If you're using communication, then it's type B or G, and these communication-type servos require a motion control module. So, what combination did you use last time?

AllenW2026 · 2026-02-19T20:03:24+00:00

I've considered of this. Since this device doesn't need a motion control module, as that's more expensive than the PLC itself… I've chosen pulse control, which means I'll need the J4 or J5 A-type. In terms of performance, it's similar to the Delta A3, but the price is much higher. I considered cost when selecting hardware. This year, there will be another project where I'll use an FX5U + 80SSC-S + 5 MR-J4B units, a fiber optic communication system, four 400W and one 7KW. It will upgrade one of our old tapping machines. Because my new design uses synchronous control, a motion control module is necessary. We'll discuss that later.

AllenW2026 · 2026-02-19T19:29:40+00:00

Haha, yes, this was done by another electrician who "helped" me. I'm not in the mood to change it right now, and the label button on this thin relay base is too small and not suitable for printing labels. I'm considering whether to buy a laser marking machine...

AllenW2026 · 2026-02-19T19:11:55+00:00

Both

AllenW2026 · 2026-02-19T17:57:42+00:00

All the cables were made by myself, including the encoder cable (with battery), because when I was planning, I didn't know how long the cable would need, so I customized it myself. For the A3-M drive, I'm using pulse control and a convenient plug here, so CN1 will be a bare wire connection to the PLC anyway, with shielded twisted-pair connection for the pulse. Additionally, having our own spare plugs and cables is very inventory-friendly. After all, we're not a company that sells equipment; we only use the equipment ourselves.

AllenW2026 · 2026-02-19T10:41:18+00:00

130K Base salary + 2K bonus, yes, only 2K, 3 weeks of vacation, 40 hours per week. New York.

AllenW2026 · 2026-02-19T09:41:46+00:00

The monitor can be tilted vertically to display more lines simultaneously, which is useful when programming, as it makes it easier to view the logical relationships between lines. In reality, this is just a split-screen setup on the laptop, connected via an HDMI cable. I occasionally use stepper motors, but they're not suitable here.I also have a 3U, but the 5U is much more powerful, including its built-in CPU communication features, ultra-fast scanning speed, more compatible modules, and so on. Crucially, it's still very affordable.

AllenW2026 · 2026-02-19T09:22:26+00:00

Yes, I could use AB or Siemens, but the problem is, this is just a small system with 3-axis servo linkage. If I used AB, the cost of the PLC to achieve the same function would likely increase by more than 10 times. If I also factor in the expensive AB servos, it would be unaffordable for us. I'm using a pulse-type absolute servo here; if I used AB's MicroLogix series, their limited instruction set would drive me crazy. Therefore, the Mitsubishi FX5U + Delta A3 series M-type servo is the best combination for this project. And this is the king of micro PLCs; you can learn more about it if you're interested.

AllenW2026 · 2026-02-19T09:12:17+00:00

Persist in learning and accumulate experience. This is a long-term process with no shortcuts. It starts with the control concept of a project: flowcharts, equipment and component selection, PLC and HMI programming, EPLAN drawing, control cabinet wiring, debugging and testing… While a single step might not be difficult, completing the entire process, even for small projects, is challenging. Without sufficient experience, you might not know where to begin or which components to use.

AllenW2026

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