Victron energy ABB B21 User manual

ABB B21, B23 and B24
Energy Meter
ENGLISH

Table of Contents
1. ABB B21, B23 and B24 Energy Meter ............................................................................................ 1
1.1. Features and requirements ................................................................................................. 1
1.2. Installation and configuration ............................................................................................... 2
1.2.1. Wiring the RS485 to USB interface ............................................................................. 2
1.2.2. Configuration of the ABB meter for Venus OS ................................................................. 2
1.2.3. GX device configuration .......................................................................................... 3
ABB B21, B23 and B24 Energy Meter

1. ABB B21, B23 and B24 Energy Meter
1.1. Features and requirements
Venus OS supports ABB's B-series Energy Meters B21, B23 and B24 as an alternative for Carlo Gavazzi Energy Meters. These
meters can be used as a generic AC meter or to measure power and energy for a non-supported PV-inverter or genset. The
following ABB product IDs are supported:
•B21: Single-phase meter, up to 65A, 35mm wide. Product ID 2CMA100155R1000 Silver
Use the B21 Silver as a replacement for the ET112.
• B23: Three-phase meter, internal shunt, up to 65A per phase, 70mm wide. Product ID 2CMA100169R1000 Silver
Use the B23 Silver as a grid meter replacement for the EM24 in ESS systems or to measure a 3-phase PV inverter.
• B24: Three-phase meter, uses Current Transformers. 70mm wide. Ratio configurable, up to 1000A per phase. CTs must
be purchased separately. A selection guide for CTs can be found on page 10 of the linked ABB document. Product ID
2CMA100183R1000 Silver
Use the B24 Silver as a replacement for the EM24 in ESS systems with more than 65A per phase.
A rough overview of the functionalities can be found here (click on Functionalities): ABB Energy Efficiency devices. Detailed
information on the respective meter can be obtained via the Product IDs linked above.
Note that other B-series meters like the 'Steel' versions are also supported, but are less accurate (Silver = class 0.5 vs. Steel =
class 1). Contact your supplier for details.
Minimum Venus OS firmware version: 2.92 or later.
Piggy-backing (grid on L1 and PV-inverter on L2) is not supported.
Each of these models have an LCD screen and connect to the GX device via an RS485 to USB interface. Zigbee connection is
not supported.
The three-phase meters use the vector method for the total energy calculation. This is the preferred method in many countries,
such as Germany and Austria. The total power is separately integrated into import- and export energy values rather than just
summing the individual phase values.
In contrast to the CG meter, the ABB meter is configured via the Device list and not via Settings > Energy meters of the GX
device. See the GX device configuration chapter [3].
ABB B21, B23 and B24 Energy Meter
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1.2. Installation and configuration
1.2.1. Wiring the RS485 to USB interface
A very small flat screwdriver is required to access the screws of the RS485 connection on the B-series terminals.
RS485 to USB RS485 signal ABB B-series terminal
Black GND terminal C (35)
Orange Data + terminal B (36)
Yellow Data - terminal A (37)
Note that the red, green and brown wire coming out of the RS485 to USB cable are not used.
1.2.2. Configuration of the ABB meter for Venus OS
A few settings such as baud rate and the correct parity must be made. The following steps are necessary to configure the ABB
meter for Venus:
1. Open the front plastic cover. With the cover closed you cannot push the SET button.
2. Push the SET button. The LCD will display "RS-485".
3. Push OK. The LCD will show "Prot" (protocol).
4. Push the down button. LCD will show "baud". Then press OK.
5. The current baud rate will be shown on the screen. Press SET. The screen will start to blink.
6. Press the down-arrow until "38400" is shown. Then press OK.
7. Press and hold OK for a second to return to the previous menu. It will show "baud" again.
8. Press the down arrow until "Parity" is displayed. Press OK. The current setting will be displayed (factory default "even").
9. Press SET. The display will blink.
10. Press the down button until "None" is displayed. Press OK.
11. Press and hold OK for a second a number of times to back out of the menu completely back to the main screen.
12. Close the cover.
For detailed installation and configuration information, see the ABB documentation linked under Features and requirements [1].
ABB B21, B23 and B24 Energy Meter
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1.2.3. GX device configuration
After proper connection and powering up, the meter(s) will be visible on the GX device in the Device list:
Scroll down to the Setup tab and set the Role of the Energy Meter:
Once the Role has been properly set, the configuration is done.
ABB B21, B23 and B24 Energy Meter
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