Page Comparison

User Interface functionality

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The unit has no user-accessible buttons to avoid manipulation of the device in public environments. Installers rely on a pen-shaped magnet to perform tasks related to the installation.

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In a web browser, navigate to the gateway IP address

1. Login to the gateway

2. LoRaWAN, Network Settings, Join Delay 5 seconds

3. LoRaWan, Network Settings, Max Datarate 5 – SF7BW125
   Click Submit
   Wait for Save and Apply to go red, and then click it

4. Firewall, Settings, Input Filter Rules
   Add ‘Allow Inbound’

5. Click Submit

6. Wait for Save and Apply to go red, and then click it

Pairing the Device with a Room Controller or Gateway

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To pair a device to a MultiTech gateway:

1. In a web browser, navigate to the gateway IP address

2. Login to the gateway

3. LoRaWAN, Key Management, click Add New

4. For each device, enter the following details, and then click OK:
   Dev EUI (available in the spreadsheet)
   App EUI (available in the spreadsheet)
   App Key (available in the spreadsheet)
   Class: A
   Device Profile: LW102-OTA-EU868
   Network Profile: DEFAULT-CLASS-A

5. Click Submit

6. Wait for Save and Apply to go red, and then click it

Mounting Position and OFF

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Once the unit is securely attached to the valve,

1. Briefly tap the pen magnet on the micr°pelt logo on the product’s cover

2. The radio establishes a link to the gateway

   Unit
   body \rightarrow

   upon successful completion, a double-beep sounds

3. The motor performs a reference run

   Unit
   body \rightarrow

   upon successful completion, a triple-beep sounds

4. The unit is now active

Activation only works from mounting position. If performed during normal operation, the product will not show any reaction.

Upon activation, the device initially moves to 50%. From there it makes adjustments as appropriate (moves to the instructed valve position, or monitors and controls the temperature).

Reset (from Normal Operation only)

The RESET function allows access to mounting position. It is also useful to restore correct operation should a malfunction occur.

To RESET the device,

1. Hold the pen magnet to the micr°pelt logo on the product’s cover until a beep sounds

2. The internal microcontroller will reset and restart

If the device is mounted on a valve, it will activate

If the device is unmounted, it will go into mounting position and switch OFF

Note: During radio communication and motor movement, the device ignores magnet input. If the magnet has been held to the mic°pelt logo for more than 5 seconds but a beep did not sound, briefly remove the magnet and then try again.

No Reset from Mounting Position

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Unscrew the ring nut from the valve and RESET the device. It will move to mounting position and switch OFF.

Temperature Control Loop

To obtain an estimate of the ambient temperature, the device measures the flow temperature every 5 minutes and performs a moving average across the last 30 minutes. It then performs the following computation:

\frac {\text{Ambient Sensor Raw Value}^{2.2}} {\text{Flow Sensor Raw Values Moving Average}^{1.2}}

Having established an estimate of the ambient temperature, the device then compares this estimate to the ambient temperature requested by the user. If they are the same, or if the ambient temperature is already moving towards the requested temperature, the device does not move the motor. Otherwise, the device applies a Proportional Controller Gain algorithm to compute the motor movement:

(P * \text{Temperature Difference} * 4) \text{  %}

The default value of P is 3. It can be modified via the downlink packet.