Arduino Opta®

Collective Datasheet

13 / 21

Arduino Opta® Collective Datasheet

Modified: 15/11/2024

5.7 Wi-Fi® and Bluetooth® Low Energy (AFX00002 Only)

The onboard wireless module allows simultaneous management of Wi-Fi® and Bluetooth® connectivity. The Wi-Fi®

interface can be operated as an Access Point, as a Station or as a dual-mode simultaneous AP/STA, and can handle

up to 65 Mbps transfer rate. Bluetooth® interface supports Bluetooth® Low Energy (4.2).

With an internet connection, the Wi-Fi® communication can be used for connecting to the Arduino® IoT Cloud or

other third-party services.

5.8 USB-C®

The USB-C® port can be used as a host or as a peripheral, but it cannot be used for both purposes at the same

time. It is possible to use the connector to power the processor and flash it, but not to power the PLC outputs and

peripherals. Additionally and using a USB memory stick, the USB-C® connector can be used for data logging

purposes or to update the program inside the PLC.

5.9 Relay Outputs

Arduino Opta® has four Normally Open (NO) powerful 10A relays which are capable of actuating on loads at a rated

voltage of 250 VAC and up to a maximum switching voltage of 400 VAC.

The relay Maximum Peak Current is defined as the highest value of inrush current that the relay can endure without

undergoing any permanent degradation of its characteristics due to the generated heat. The relay has to be able to

hold up that maximum using a duty cycle of less or equal to 10% and for a time equal to or less than 0.5 s.

In the case of Arduino Opta®, relays have a Maximum Peak Current of 15A.

The Rated Load is the maximum resistive load that a contact can make, carry and break repeatedly.

For resistive or slightly inductive loads (AC1 classification), Arduino Opta's Rated Load is 2500 VA.

For small electromagnetic loads (> 72 VA) (AC15 classification) like power contactors, magnetic solenoid valves,

electromagnets and AC single-phase supplies, Arduino Opta's Rated Load is 500 VA. This value assumes a peak

inrush current of approximately 10 times the rated current and keeping it within the maximum peak current.

For controlling DC loads (DC1 classification), the Breaking Capacity or maximum value of DC resistive current that a

contact can make, carry and break repeatedly, is 10/4/0.3/0.12 A for respectively 24/30/110/220 V.

In the case of the minimum switching load parameters, the minimum values of power, voltage and current that the

relays can reliably switch, are 300 mW/ 5V / 5mA. This implies that with 5V the current must be at least 60mA, with

24V, it must be at least 12.5mA, and with 5mA the voltage must be at least 60V.

The relays on Arduino Opta® provide a very fast response time of 6/4 ms to change state for closing/reopening,

and a bounce time NO/NC of 3/6 ms.