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Finder 8A.04.9.024.8310 8A Series - OPTA Arduino Programmable Logic Relay
MPN: 8A.04.9.024.8310
Alt. SKU: 8A0490248310
Special Price
£136.18
£113.48
Regular Price
£187.01
Finder 8A.04.9.024.8310 8A Series - OPTA Arduino Programmable Logic Relay is available to buy in increments of 5
Why Choose the Finder 8A.04.9.024.8310 OPTA Plus Programmable Logic Relay
The Finder 8A.04.9.024.8310 is the OPTA Plus programmable logic relay that adds RS-485 Modbus to the already capable OPTA platform. You get 8 configurable inputs (digital or 0-10 V analogue), 4 relay outputs rated 10 A AC1, built-in Ethernet and USB-C, plus DIN-rail mounting for fast panel integration.
At a Glance
- Supply voltage: 12 to 24 V DC
- Inputs: 8 configurable digital or 0-10 V analogue
- Outputs: 4 relay outputs, 10 A AC1 at 250 V AC (NO)
- Interfaces: Ethernet RJ-45, USB-C, RS-485 Modbus RTU (Plus version)
- Programming: Arduino IDE or IEC 61131-3 environments
- CPU: STM32H747 dual-core microcontroller
- Mounting: DIN-rail EN 60715
- Operating temperature: minus 20 °C to plus 50 °C
- Variant: OPTA 8A.04 Plus – model 8A.04.9.024.8310
Key Benefits
- Extra connectivity: RS-485 Modbus RTU on top of Ethernet gives flexible plant and machine integration.
- Flexible I/O: Each of the 8 inputs can be digital or 0-10 V analogue, reducing extra signal hardware.
- Industrial switching: 4 x 10 A relay outputs handle contactor coils, solenoids and utility loads.
- Developer choice: Use Arduino workflows or classic IEC 61131-3 languages.
- Compact footprint: PLC-class control in a small module to save panel space.
Technical Specifications
- Manufacturer: Finder S.p.A.
- Series and model: OPTA 8A – 8A.04.9.024.8310 (Plus)
- Rated supply: 12 to 24 V DC, tolerance approximately ±15 %
- Inputs: 8 x DI or AI 0-10 V configurable
- Outputs: 4 x relay NO, 10 A AC1 at 250 V AC
- Ports: 1 x Ethernet RJ-45, 1 x USB-C, 1 x RS-485 Modbus RTU
- Processor: STM32H747 dual-core
- Mounting: DIN-rail EN 60715
- Operating temperature: minus 20 °C to plus 50 °C
- Typical use cases: machine panels, OEM controls, fieldbus gateways, networked monitoring
Installation note: Mount on DIN-rail EN 60715 and power from a clean 12 to 24 V DC supply. Configure each input as digital or 0-10 V to match sensors, and verify output load ratings and inrush before wiring. Use USB-C for initial setup and firmware; use Ethernet for programming and diagnostics; wire RS-485 for Modbus RTU networks. Maintain minus 20 °C to plus 50 °C ambient and allow ventilation.
Frequently Asked Questions
What does the Plus version add over the Lite
The OPTA Plus model adds an RS-485 Modbus RTU interface alongside Ethernet and USB-C. Inputs, outputs and supply remain the same as the Lite version.
Can the inputs read analogue directly
Yes. All 8 inputs can be configured for 0-10 V analogue or used as standard digital inputs.
How are the relay outputs rated
There are 4 normally open relay outputs rated 10 A AC1 at 250 V AC. For inductive loads or high inrush, consider using an interposing contactor.
Which tools can I use to program it
Program with the Arduino IDE or an IEC 61131-3 environment. USB-C is used for programming, logging and power during development.
Does it support Wi-Fi or Bluetooth
Not on this Plus model. Wireless connectivity is available on the Advanced 8A.04.9.024.832x variants.
| Manufacturer Part Number | 8A.04.9.024.8310 |
|---|---|
| Alternative Product SKU | 8A0490248310 |
| Manufacturer | Finder |
| HS Code | 85371098 |
| Rated current | 10A |
| Contact Configuration | 4 NO (SPST) |
| Max. peak current | 10A |
| Max. switching voltage (control contacts) | 400VDC |
| Rated voltage | 250VAC |
| Rated load AC1 | 2500VA |
| Rated load AC15 (230 V AC) | 500VA |
| Minimum switching load | 300mW (5V/5mA) |
| Output operate/release time | 6/4ms |
| Contact material | AgNi |
| Nominal voltage DC | 12-24VDC |
| Operating range | 10.2-27.6VDC |
| Software Included | Arduino IDE or Arduino PLC-IDE |
| Height | 84mm |
| Width | 70mm |
| Depth | 56.8mm |
| Packed Quantity | 5 |
| Country of Manufacture | Italy |
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