Connecting Power

Note: These are Dell gateway instructions. For Advantech gateway instructions, see Connecting Power (Advantech).

Use one of the two following options to connect power (PoE is recommended):

Connecting Power with PoE (Power over Ethernet)



  1. Position a KMC CMDR-D3-PWR-POE Power over Ethernet Injector near the KMC Commander IoT gateway.

  2. Connect the network Ethernet cable to the LAN IN jack of the injector on the same side as the LED Power indicator and the power supply jack.

  3. Connect the Ethernet cable (supplied with the injector) from the KMC Commander’s Ethernet Port 1 to the POWER+DATA OUT port on the injector as shown in the illustration. (This is the side opposite from Power indicator and the jack for the 48 VDC power supply.)

Caution: Do NOT reverse the Ethernet connections to the injector.

  1. Connect the injector’s power supply to the injector, and plug the power supply into a 120 VAC outlet.

    Note: When power is connected, the Power LEDs on both the PoE injector and the gateway should immediately glow green.

    Note: If the Power LED on the PoE injector is amber and flashing slowly instead of glowing a solid green, try unplugging the power supply to it and plugging it back in. If that doesn’t help, replace the injector and/or its power supply.

    Note: If the Power LED on the gateway is amber instead of green, the power supply voltage is too low and the gateway will not be able to communicate. Try a different injector and/or power supply.

Continue to Connecting Wi-Fi and Making Initial Login.

Connecting Power with a DC Power Supply

  1. Remove the plastic cover from the DC power connector on the side of the gateway.

    Caution: Do not connect an AC transformer for power.

    Caution: The gateway must have its own dedicated DC power supply to avoid potential equipment damage.

    Caution: The DC power supply must be double-insulated and comply with local codes and regulations— NEC Class 2 (SELV/limited energy circuit, or LPS circuitry) in the USA. Ensure that the power source is reliably grounded and filtered such that the peak-to-peak ripple component is less than 10 percent of the DC voltage.

  2. Wire a 12–57 VDC (not AC) power supply (20 watts or more, purchased separately from a third party) to the (supplied removable) terminal block according to the label marked next to the connector.

    Note: The 24 VDC IDEC PS5R-VD24 power supply, for example, meets the requirements.

    Note: The black terminal block connector is packaged inside a plastic bag in the carton. It accepts 20 to 13 gauge (0.8 to 2 mm) wiring.

  3. After wiring is complete, push the terminal block into the power connector.

    Note: The DC power supply must not be shared with another device.

    Note: For permanent installation, secure the screws that hold the terminal block to the connector.

  4. Connect power to the DC power supply.

    Note: When power is connected, the Power LED should immediately glow green.

    Note: If the Power LED is amber instead of green, the power supply voltage is too low and the gateway will not be able to communicate. Verify that the power supply is operating properly (at least 12 VDC and not more than 57 VDC). Try a different power supply.

Continue to Connecting Wi-Fi and Making Initial Login.