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Victron & AXIstorage Li 7S / 9S
The combination of Victron products with the BMZ ESS 7.0 battery has been tested and certified by the R&D departments. The combination is actively supported by both companies. The AXIstorage 7S/ 9S is identical with the BMZ ESS hardware and software and therefore also compatible.
1. Introduction
1.1 Compatible Victron products
All 48V Multis and Quattros. A Venus-device is necessary in the system, since that has the canbus port which is used for the (required!) communication between the ESS battery and the Victron system.
1.2 Notes
- AXIstorage batteries can only be used in a Victron ESS installation installation that uses the ESS Assistant.
- Paralleling multiple AXIstorage ESS batteries to expand capacity is possible. Contact AXIstorage for more information.
- Derating, based on the dynamic AXIstorage ESS charge- and discharge limits:
- Minimum CCGX version is v1.72
- The derating mechanism is not very precise yet. In other words, do not expect a discharge limit of 30A to result in a precise discharge of 30A.
- Actual charge- and discharge limits are visible in the Parameters page. See screenshot below in Chapter 5.
- AXIstorage batteries and MPPT Solar Chargers with a VE.Can communication port cannot be both connected to the CCGX, because of different canbus speeds. Use Solar Chargers with a VE.Direct comm. port instead.
1.3 System diagram
2. Venus-device needed
To use the AXIstorage ESS in Victron system, it is necessary to use a ColorControlGX or a VenusGX. The controller takes care of sending the necessary canbus keep-a-live message to the ESS battery. Without it, the battery will open its internal emergency relay after 10 minutes.
3. Wiring of communication cables
Use the VE.Can to CAN-bus BMS type B Cable, part number ASS030720018. Plug the side which is labeled Battery BMS into the AXIstorage BMS. Plug the side labeled Victron VE.Can into the Venus-device.
Then, plug a VE.Can terminator in the other VE.Can socket on the Venus-device. Two VE.Can terminators are included with the package of the CCGX as an accessory, only one is used. Keep the other one as a spare.
More information about the cable can be found in its manual.
Without properly connecting this cable, the battery will stop charging/discharging after several minutes. Also, the battery will not show up on the display of the of the Venus-device.
4. VEConfigure settings
4.1 General tab
- Check “Enable battery monitor”
- Set the battery capacity to 121.5 Ah
- The other parameters (“State of charge when bulk finished” and “Charge efficiency”) can be left to their default setting. They are not used in this setup.
4.2 Charger tab
Parameter | Setting |
---|---|
Battery type | Lithium |
Charge curve | Fixed |
Absorption voltage | 60.75 V |
Float voltage | 60.00 V |
Absorption time | 1 Hr |
Note: make sure to double check the float voltage after completing Assistants, and if necessary set it back to 60.00 V.
4.3 ESS Assistant
Select the fourth battery type:
Then:
- Sustain voltage: 50.0V
- Do not change the dynamic cut-off values, they have already been set correctly after selecting the lithium battery type.
- Same for the restart offset: do not change that.
5. Venus-device Configuration
- Select the CAN-bus BMS (500 kbits/s) CAN-profile in the Venus-device. Menu path: Settings → Services → CAN-profile. Note that this changes the function of a VE.Can port: it is not possible to connect both VE.Can products and a AXIstorage battery together.
- After properly wiring and setting up, the AXIstorage will be visible as a battery in the device list:
- The parameters option within the battery page shows the actual battery charge and discharge limits:
DISQUS
~~DISQUS~~