Digital Loggers IOT Relay II Basic Operation

Digital Loggers IOT Relay II Basic Operation

Digital Loggers IOT Relay II Basic Operation


DLI IoT II

The Digital Loggers IoT Power Relay II allows you to control AC power to 4 NEMA outlets from a simple AC/ DC control signal. This control signal can be from an Arduino, Raspberry Pi, Galileo, or any other microcontroller. It can also be obtained directly from a 12V- 48VDC source or even 120VAC circuit since it allows for both DC and AC control.

The allowed universal control voltage ranges are 3-60VDC or 12-120VAC. A single input signal will switch three outlets: one normally on (NO), two normally off (NC). One always-on outlet is also provided.

The IoT II uses a 2-pin green phoenix connector for the trigger signal input. The signal effects power control at the relay outputs. To connect your control signal, remove the green connector gently. Use the screw terminals to attach two wires (one to ground and the other to the control signal) i.e. either -GROUND and +TRIGGER, or +VCC and -TRIGGER. Re-insert the connector. Note that the DC trigger input is polarity sensitive, and attention ought to be given to the positive (+)/negative (-) markings on the device.


2-Pin Phoenix Connector

Applications:

Relays are widely used in most machines and devices that use AC power:

  1. Home electrical appliances - refrigerators, washing machines, AC units, fans, alarm systems.
  2. Network devices – Routers, Switches, Servers, Printers etc.
  3. Automatic vending machines & entertainment equipment
  4. Industrial machinery - molding equipment, packing machinery, industrial robots, programmable controllers.
  5. Scientific equipment - constant temperature tanks 

Using the IoT II Relay without a Microcontroller:

In this instance we have a remote workshop far from the house. The devices to be powered are:

  1. Ceiling Fan (Turns on only when someone is in the workshop – Connect to NC outlet)
  2. Wireless Internet Router (Turns on only when someone is in the workshop – Connect to NC outlet)
  3. External Camera feed (Stays on 24 hours a day - Connect to Always On outlet)

We want our relay to be triggered by normal 120VAC mains power (on the same line with the room light switch). A simple setup will look as such:



            DLI IoT II with 120VAC as Trigger Signal


Using the IoT II Relay with a Microcontroller:
The same action can be initiated by an Arduino microcontroller using DC signal as a trigger as shown below:



DLI IoT II using Arduino Output as Trigger Signal


Sample procedure for connecting to the Relay with Arduino Board providing the trigger signal:
  1. Specify the pin
  2. Initialize as output
  3. Toggle a data bit to control the relay.
Code for generating trigger signal:


Contact our Power Solutions Specialists to help you identify and configure the remote power solutions for your next project.

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