Page Comparison

User Interface functionality

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.

Setting up a Gateway

 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

 Devices will be accompanied with a spreadsheet containing the following information:

• Device EUI

• Join EUI

• Application Key

 The Device EUI is unique to the device and allows identification and communication via LoRaWAN.

The Application Key is randomly generated and the password to ensure secure communication.

  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. (Only needs to be done once:)
   LoRaWAN, Network Settings, Join Delay 5 seconds
   LoRaWAN, Network Settings, Max Datarate 5 – SF7BW125

4. LoRaWAN, Key Management, click Add New

5. 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

6. Click Submit

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

Mounting Position and OFF

 In mounting position, the plunger inside the product’s valve adaptor is fully retracted, so that the unit can be easily attached to a circulation valve. In mounting position, the product is OFF, preserving the charge of the internal energy storage device. This makes it the preferred mode for shipping and storing.

 How to enter mounting position from normal operation:

• If the unit is attached to a valve, remove it

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

• The unit will fail the reference run and consequently end up in mounting position

 Upon delivery, all new units are in mounting position.

Attaching and Activating a unit

Before attempting to attach a unit to a valve, be sure it is in mounting position (refer to the above section).

Check the target valve for contamination and leakage. If the valve requires it, do cleaning or service. Then, place the aluminum connector of the product against the valve and secure it by using the ring nut.

Should the target valve not be of type M30 x 1.5, an adaptor is required.

Once the unit is securely attached to the valve,

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

• The radio establishes a link to the gateway → upon successful completion, a double-beep sounds

• The motor performs a reference run → upon successful completion, a triple-beep sounds

• The unit is now active

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

Reset (from Normal Operation only)

The MLR003FiEU61-12-1.1 RESET function allows access to mounting position. It is also useful to restore correct operation should a malfunction occur.

To RESET the device,

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

• 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

No Reset from Mounting Position

Removal from the Valve

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 (Section 7.2).

Antifreeze

The antifreeze function prevents damage to the pipes. Below 6°C at the integrated valve side temperature sensor, the valve opens to 95%. The 6°C is an absolute temperature, any user-offset is ignored.

Battery Charging Flow Chart

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