The Industrial Raspberry Pi Forum

I'm new to RevPi, and am looking for a replacement for the ArduinoPLC OPTA Lite. I've browsed revolutionpi.com products, but am confused about what I'd need to buy to replace the OPTA Lite. Here are my requirements:

1) Control two 48 VDC Motors that are reversible - reverse through a separate 12 VDC Contactor Relay connected to PLC outputs.
2) Operates at 12-24 VDC.
3) Four Relay Outputs 10A, Eight Analog/Digital Inputs.
4) Programmable via Windows based IDE preferred - Linux/iOS will be considered.
5) Ladder Diagram will be the primary PLC programming language.
6) Micro programmable so that enhanced logging, reporting, and communication techniques can be used. Any micro language is fine.
7) Ethernet (remote) configurable, updateable.
8) Suitable for office settings - dry, dust-free,
9) Reliable - proven to work in thousands of installations.
10) Reliable supplier with excellent service support.

Thanks!
Bob

Dear Bob,

Thank you for reaching out! Based on your requirements, I would be happy to help you find the right RevPi setup to replace the ArduinoPLC OPTA Lite.
Recommended RevPi Components:
1. RevPi Connect 4 or Connect 5 – Base modules
- Operates at 12-24 VDC and supports Ethernet connectivity for remote configuration & updates.
- Programmable using CODESYS (Ladder Diagram) or Python/C for advanced micro-programming.
- proven industrial solution used in thousands of installations.

2. RevPi RO (Relay Output Module) – Expansion module
- Provides 4 relay outputs (max. 5 A @ 250 VAC / 30 VDC).
- If 10 A relay outputs are required, external contactor relays would need to be used.
- Can be used to control 12 VDC contactor relays for 48 VDC motor reversal.

3. RevPi DIO (Digital I/O Module) – Expansion module
- Offers 14 digital inputs & 14 digital outputs (max. 500 mA per output), covering your digital input needs.

4. RevPi AIO (Analog I/O Module) – Expansion module (If analog inputs are needed)
- 4 analog inputs (0-10 V or 0-20 mA) and 2 analog outputs.

I hope this answers your questions.

Best Regards,
Behzad

Behzad, thank you very much for taking the time answer my request. Your info is very thorough!

I will study your list, and decide which components are best for my application. It will be a few weeks before I get back to this project, but I will.

Bob