How to Supply Power
The Intelligent Edge Kilo (Kilo) has no built-in battery. Supply power from an external DC power source.
- Power supply from the bottom connector (detachable terminal)
- Power supply from USB
How to Supply Power from the Connector
1. Attach the power cable to the detachable connector.
👉 Check the polarity (+V / GND) and tighten the screws just enough, about as tight as a jam jar lid.
2. Insert the connector straight in, all the way into the terminal on the bottom of the Kilo.
3. Connect the other end to a power source (an AC adapter, batteries, etc.) to supply power.
How to Supply Power from USB (for temporary use, such as during configuration only)
1. Connect the USB cable to the USB Type‑C connector on the side of the Kilo.
2. Connect the other end of the cable to an AC adapter or device to supply power.
👉 USB power depends on the output capacity of the adapter.
❗
[Size of the USB Type‑C plug]
The connector is on the smaller side. Cables with a large plug outer shape may not be able to be inserted, so please check in advance.
Comparison of Power Supply Methods
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[Internal power conversion efficiency]
Connector power > USB power. 👉 For long-term operation or sleep-centric configurations, connector power is recommended.
| Item | Using the connector | Using USB |
|---|---|---|
| Voltage range | DC 5 to 32 V (strictly observe the upper limit) 👉 If the supply is unstable, select the lower, safer voltage |
DC 5.0 to 5.5 V (USB standard range) |
| Power consumption | Approximately 0.2 W on average 👉 May spike temporarily during communication, etc. |
Same as left |
| Protection circuit | Reverse-connection protection + polyfuse (1.5 A) | — |
| Voltage measurement on the Kilo | Possible (used for detecting voltage stability or drops, and for estimating remaining charge) | Not possible |
Behavior at Low Voltage
Order of Operation Shutdown
If the supply voltage drops, the unit shuts down in stages.
① Below 5 V: CANBus stops (terminals go to Hi‑Z)
② Near 3.3 V: If the 3.3 V bus is maintained, the network and other functions may continue
③ Below 3.3 V: Each component stops in turn
Power Bus Configuration
Internally, the unit operates with a 5 V bus (CAN transceiver, 3.3 V step-down) and a 3.3 V bus (other components).
obnizOS Fault Detection and Restart
obnizOS performs an automatic restart and reconnection when it detects a fault.
👉 Even when recovering from a partial voltage drop, it attempts to re-establish the network.
Hardware States Retained When obnizOS Restarts
🚨
Even when obnizOS restarts, the internal power management IC is not reset.
Therefore, the following retain their previous state even after a restart.
・The operating state of the RS232/422/485 transceivers
・The operating state of CANBus
・The open/closed state of the relays