Janitza B23 / UMG 103

Applicable documents

https://www.janitza.de/produkte/mid-energiezaehler-downloads.html

Janitza UMG 103-CBM

Interface: RS485

• Ensure the absence of voltage and verify it.
• Terminate a long signal line with a 120 Ohm terminating resistor on the energy meter side.
• Connect the energy meter to the EnergyManager as shown in the following diagram. Ensure that A and B are connected correctly to the RS-485 interface on the EnergyManager.
• The Janitza UMG 103 is a converter meter. The meter must be programmed with the appropriate transformer ratio using the GridVis programming software supplied by the meter manufacturer. This requires a USB/RS485 cable and a notebook. Programming should be carried out on site in the installed state, as the meter loses its programming if the supply voltage is absent for a longer period of time.
• Restore the power supply.

Janitza B23 / Janitza ABB B23

Interface: RS485

Only installations with one tariff (tariff 1) are supported.

• Ensure the absence of voltage and verify it.
• Terminate a long signal line with a 120 Ohm terminating resistor on the energy meter side.
• Connect the meter to the EnergyManager as shown in the following diagram. Ensure that A37, B36 and C35 are connected correctly to the RS-485 interface on the EnergyManager.
• The Janitza UMG 103 is a converter meter. The meter must be programmed with the appropriate transformer ratio using the GridVis programming software supplied by the meter manufacturer. This requires a USB/RS485 cable and a notebook. Programming should be carried out on site in the installed state, as the meter loses its programming if the supply voltage is absent for a longer period of time.

• Start the SmartSetup.
• In the Select devices drop-down menu, select or search for the Janitza driver.
• Select the interface to which the meter is connected.
• Click Add device to search
• Add further devices to the search if necessary.
• When the search list is complete, click Search for and install devices.

Correctly installed devices appear in the device list with the message: Device is installed. The list also shows the current generation data.

• If necessary, connect additional devices.
• Continue with the SmartSetup.

The majority of communication problems are due to faulty cabling.

Meter is not found

• Check the connection of the device, rule out cable breaks in the connection cable.
• Replace A and B.
• Check the ground connection on the UMG 103.
• The connection cables should not be laid together with cable bundles with high current loads.
• Check, especially after resetting the energy meter, whether the following settings are stored in its configuration menu Communication:
  • Baud rate: 19200 bps
  • Parity: None

Energy meter was found, but is not sending any values or is not sending plausible values

• Check whether the energy meter is connected to the correct interface of the gateway.
• The correct converter ratio must be programmed into the UMG 103 using the GridVis software from Janitza
• must be programmed in. Follow the instructions in the section Connecting the Janitza UMG 103-CBM and contact the manufacturer if necessary
• the manufacturer if necessary.
• Compare the load measured via the gateway with the information on the display of the energy meter,
• if available.
• The connection cables should not be laid together with cable bundles with high current loads.