A: 1. Firstly, it is not recommended to forcibly use the built-in power supply driver of the inverter. If you want to use the built-in 24V power supply for load driving, the first step is to consult the product specification / manual of the corresponding inverter to confirm the maximum output current of the 24V auxiliary power supply.
2. Taking a maximum output current of 200mA as an example. Corresponding to a rated power of 4.8W, a small relay with 48mA can drive 4. Considering line voltage drop, surge current and safety redundancy, calculate the long-term safe current as 70% of the rated current (i.e. 140mA). For this inverter, the recommended number of relays driven by 48mA is no more than 3 to avoid overloading and damage to the 24V built-in power supply.
3. If the load demand exceeds the power capacity of the 24V power supply specified in the specification, it is recommended to connect an independent switching power supply externally.