Connecting outputs

Connecting Relay Outputs (16A)

The key feature of the 24x16A model is that each of the 24 relays has its own, galvanically isolated COM terminal. This provides tremendous flexibility and allows for controlling circuits powered from different phases or protected by different residual-current devices (RCDs).

Protection and Correct Wiring Order

It is critical that all overcurrent protection (Miniature Circuit Breakers, MCBs) and residual-current devices (RCDs) are installed in the circuit before the boneIO controller.

The current rating (in Amps) of the overcurrent protection must be sized appropriately for the planned load of the circuit (e.g., the wattage of the loads), but at the same time, it must not exceed the maximum rated current of the relay, which is 16A.

The correct current flow for the phase (L) wire is as follows: RCD Protection -> Overcurrent Protection (MCB) -> COM terminal in boneIO -> OUT terminal in boneIO -> Load

Example 1: Controlling a standard circuit

1. Connect the phase wire (L), coming from the dedicated overcurrent protection (MCB ≤ 16A), to the COM terminal of the selected output (e.g., COM 1).
2. Connect the wire leading to the load (e.g., an outlet) to the NO (Normally Open) terminal of the same output (e.g., OUT 1).
3. Run the neutral wire (N) directly to the load.

Logical Diagram

Example 2: Controlling circuits from different phases / RCDs

Thanks to the separation of the COM terminals, you can safely connect circuits from different sources.

Logical Diagram

Safe Connecting of COM and OUT Terminals

In the boneIO controller, version Cover every two outputs (e.g., Cover 01 UP and DOWN) share a single common power terminal COM. This means that the phase wire (L) from a single circuit breaker supplies a pair of relays - with hardware interlock.

1. REMEMBER, ensure that the relevant circuit breakers in the electrical cabinet are turned off.
2. Connect the phase wire (L), coming from the overcurrent protection, to the appropriate COM terminal - tighten it with adequate force.
3. Connect the wire leading to your load (e.g., socket) to its corresponding output terminal - tighten it with adequate force.
4. Run the neutral (N) wire directly from the neutral bar to the load.