Installation
Mount CMi6110 in either a L+G UH50 heat meter (FW ≥ 5.15) or L+G UC50 calculator (FW ≥ 8.06) by following the procedure below:
Caution
This is an ESD-sensitive product. Before and during installation, apply appropriate ESD protection measures and ensure that you are grounded (for example by touching the meter’s metal pipe or another metal part electrically connected to it).
-
Insert a SIM card (size nano) in the SIM card holder (7).
-
Open the meter housing. If possible, disconnect the meter power supply (battery or mains) and wait until the LCD display turns off.
-
Apply ESD precautions. Make sure you are grounded (e.g., by touching the meter’s metal pipe or a metal part which is electrically connected to it).
-
Install the module by gently pressing it into the module slot 2.
-
Reconnect power (if disconnected) and wait until the meter LCD turns on and no errors are shown.
-
Activate the module using the Elvaco OTC App, or by carefully pressing the button on the CMi6110 until the green LED lights up (see the activation section for details).
-
Close and seal the meter housing.
Note
If the meter was previously battery-powered and already equipped with a module, please consider replacing the battery. If not, the remaining battery life cannot be predicted.
CMi6110 supports either an internal or an external antenna, via its on-board MCX connector.
Note
The internal antenna is only an option for battery powered devices.
-
Remove the lid of the meter and place the antenna to the right of the module. The foam on the antenna will keep its position secured.
-
Route the cable as shown in the image below:
-
Connect the antenna cable to the MCX antenna connector on the module.
-
Remove the lid of the meter and connect an external antenna (provided by the supplier) with MCX connector to the module in the meter.
-
Route the antenna cable. If necessary, make a hole in the rubber grommets in the meter bottom. The following image shows which hole to use for the antenna cable.
-
Connect the antenna cable to the MCX antenna connector on the module.
Caution
If using an external antenna, make sure to mount it at least 0.5 meters away from the meter in order not to cause interference.
Note
-
The rubber grommets may not be cut.
-
Punch a hole with a 3 mm diameter through the grommet. A 3 mm hex key (Allen key), for example, is a suitable tool.
-
Make sure to remove the strain relief (metallic clip) and do not remount it due to the risk of damaging the antenna cable. If you want to add additional strain relief, mount a cable tie on the antenna cable, close to the cable entry inside the enclosure.
The CMi6110 can be either battery or mains powered. Before installing any of the options, read the instructions below carefully.
Follow the procedure below to connect the module battery. Note that the module uses a separate battery from the meter.
-
Remove the red flap inside the meter.
-
If the right compartment contains a power supply, remove that battery or power supply unit.
-
For the meter supply, a Landis+Gyr WZU-BC+GUM battery must be inserted into the left compartment.
-
Mount the Landis+Gyr WZU-NB-IoT-BAT (battery + holder) in the right compartment.
CMi6110 connections
Warning
To prevent accidental short circuits or damage to the internal fuse of the NB-IoT battery, do not use any conductive tools (e.g., metallic tweezers, pliers, etc.) when connecting the battery plug.
Caution
The battery that supplies the meter must be connected before connecting the CMi6110 battery.
Caution
Removing the meter’s red flap is only allowed for the purpose of replacing it with a battery. The battery holder (made of isolating material) replaces the function of the red flap. Once inserted into the meter it cannot be removed.
Note
Battery operation is available from FW 1.0.3. Current FW can be read via the Elvaco OTC App, or over LwM2M. Modules with earlier FW can be remotely updated.
-
Remove the top cover of the Landis+Gyr UH50/UC50 enclosure. To expose the appropriate battery compartment, flip the red locking flap to the left compartment. Do not remove the red locking hatch.
-
Grab the power supply and press it gently into position.
-
When the power supply has been placed into the correct position, secure the power cable (1).
-
Remove the plastic seal to create hole (2) in the Landis + Gyr UH50/UC50 enclosure, and bring the power cable through that hole.
-
Connect the Landis + Gyr UH50 power connector (1) to the on-board connector of the module.
-
Cut the wiring to a proper length and attach it to a mains plug. The power must be connected to a clearly marked and easily accessible switch (IEC 60947-1 and IEC 60947-3). This ensures that the product can be switched off during service work.
Upon delivery the module will be inactive, meaning that the module will not transmit any messages. Ensure to follow the mounting procedure before activating the module. There are two ways to activate the module, either via the module push button, or via the Elvaco OTC app.
When activated, the module will attempt to connect to the NB-IoT network. This phase is indicated by the green and red LEDs lighting up for 1 second, followed by short flashes of the green LED until the module joins the network. When the module successfully connects to the network, the green LED remains lit for 8 seconds, as illustrated in the image below. Upon successful connection, a meter readout is automatically transmitted to the receiving system.
If the module fails to join the mobile network, it will perform retries until it succeeds. The time between each attempt will increase for every attempt until it is performed once per day. A new join attempt cycle can be manually started at any time using the push button to reboot the module, or by deactivating and activating the module using the Elvaco OTC App.
LED indications, network connection
Comments (0 comments)