Cerbo GX Installation
Table Of Contents
- Cerbo GX Manual
- Table of Contents
- 1. Introduction
- 2. Installation
- 2.1. Overview of connections
- 2.2. Power
- 2.3. Connecting Victron products
- 2.3.1. Multis/Quattros/Inverters (VE.Bus products)
- 2.3.2. Battery Monitor BMV-700 series; and MPPTs with a VE.Direct port
- 2.3.3. Skylla-i, Lynx Shunt VE.Can, Lynx Ion + Shunt and MPPTs with a VE.Can port
- 2.3.4. VE.Can and BMS-Can Interfaces
- 2.3.5. BMV-600 series
- 2.3.6. DC Link box
- 2.3.7. VE.Can Resistive Tank Sender Adapter
- 2.4. Connecting a PV Inverter
- 2.5. Connecting a USB GPS
- 2.6. Connecting a Fischer Panda Generator
- 2.7. Connecting Tank Level Sensors
- 2.8. Connecting third-party NMEA 2000 tank senders
- 2.9. Connecting Temperature Sensors
- 2.10. Connecting IMT Solar Irradiance, Temperature and Wind Speed Sensors
- 3. Internet connectivity
- 3.1. Ethernet LAN port
- 3.2. Wi-Fi
- 3.3. GX GSM
- 3.4. Mobile (cellular) network using a 3G or 4G router
- 3.5. USB tethering using a mobile phone
- 3.6. IP Configuration
- 3.7. Connecting both Ethernet and Wi-Fi (failover)
- 3.8. Minimize internet traffic
- 3.9. More information about setting up an internet connection and VRM
- 4. Accessing the GX device
- 5. Configuration
- 6. GX - How to update firmware
- 7. VE.Bus Inverter/charger monitoring
- 8. DVCC - Distributed Voltage and Current Control
- 9. VRM Portal
- 10. Marine MFD integration by App
- 11. Marine MFD integration by NMEA2000
- 12. Digital Inputs
- 13. GX - Generator auto start/stop
- 14. Error Codes
- 15. FAQ
- 15.1. Q1: I cannot switch my Multi/Quattro system on or off
- 15.2. Q2: Do I need a BMV to see proper battery state of charge?
- 15.3. Q3: I have no internet, where can I insert a sim-card?
- 15.4. Q4: Can I connect both a GX Device and a VGR2/VER to a Multi/Inverter/Quattro?
- 15.5. Q5: Can I connect multiple Cerbo GX to a Multi/Inverter/Quattro?
- 15.6. Q6: I see incorrect current (amps) or power readings on my Cerbo GX
- 15.7. Q7: There is a menu entry named "Multi" instead of the VE.Bus product name
- 15.8. Q8: There is a menu entry named "Multi", while there is no Inverter, Multi or Quattro connected
- 15.9. Q9: When I type the ip-address of the Cerbo GX into my browser, I see a web page mentioning Hiawatha?
- 15.10. Q10: I have multiple Solar chargers MPPT 150/70 running in parallel. From which one will I see the relay status in the Cerbo GX menu?
- 15.11. Q11: How long should an automatic update take?
- 15.12. Q12: I have a VGR with IO Extender, how can I replace this with a Cerbo GX?
- 15.13. Q13: Can I use Remote VEConfigure, as I was doing with the VGR2?
- 15.14. Q14: The Blue Power Panel could be powered through the VE.Net network, can I also do that with a Cerbo GX?
- 15.15. Q15: What type of networking is used by the Cerbo GX (TCP and UDP ports)?
- 15.16. Q16: What is the functionality behind the menu item Remote support (SSH), in the Ethernet menu?
- 15.17. Q17: I don’t see support for VE.Net products in the list, is that still coming?
- 15.18. Q18: What is the data usage of the Cerbo GX?
- 15.19. Q19: How many AC Current Sensors can I connect in one VE.Bus system?
- 15.20. Q20: Issues with Multi not starting when Cerbo GX is connected / Caution when powering the Cerbo GX from the AC-out terminal of a VE.Bus Inverter, Multi or Quattro
- 15.21. Q21: I love Linux, programming, Victron and the Cerbo GX. Can I do more?
- 15.22. Q22: How do I change the logo
- 15.23. Q23: Multi restarts all the time (after every 10sec)
- 15.24. Q24: What is Error #42?
- 15.25. GPL Note
- 16. More information
• I see that the Multi is supplying a load with 2000W, while in inverter mode, but from the battery only 1850W is being taken. Is
those 150W coming out of nowhere?
The general answer is: the Multi and Quattros are not measurement instruments, they are inverter/chargers, and the
measurements shown are a best effort delivery.
In more detail, there are several causes for measurement inaccuracies:
1. Part of the power taken from a battery by the inverter is being lost in the inverter, converted into heat: efficiency losses.
2. The Multi does not really measure the power being drawn from the battery. It measures the current at the output of the
inverter, and then makes an assumption of the power being drawn from the battery.
3. Watts vs VA: depending on the Multi/Quattro firmware version and also the Cerbo GX firmware version, you are either looking
at VAs (the result of calculating AC voltage * AC current) or looking at a Watts measurement. To see WATTS on the Cerbo
GX , update your Cerbo GX to the latest version (v1.21 or newer). Also make sure the firmware version in your Multi supports
Watts readout, minimum versions are xxxx154, xxxx205 and xxxx300.
4. Multis/Quattros connected to the Cerbo GX via a VE.Bus to VE.Can interface will always reports VAs, not (yet) Watts.
5. If a current sensor assistant is loaded in a Multi/Quattro and no sensor is connected it will return invalid power / kWh values.
6. If a current sensor assistant is loaded in a Multi/Quattro make sure the position is set correctly and the scale match with the
dipswitches on the sensor itself.
7. A current sensor assistant measures and reports VAs, not Watts.
Notes for systems with multiple units in parallel:
1. Cerbo GX version prior to v1.20 use the power and current reported by the master of a phase and multiplied that by the
number of devices in that phase. Since version v1.20 the values of all device is summed per phase and hence should be
more accurate.
2. This revealed a bug for in the firmware of the multi when running in parallel. Ccgx v1.21 workarounds this, by falling back to
the original behavior when it sees an affected firmware version. For better readings the multi's should be updated. The bug
has been fixed in VE.Bus firmware version xxxx159, xxxx209, xxxx306. That firmware was released on February 17th 2015.
3. Multi firmware versions since 26xx207 / xxxx300 can also freeze the Power values at a certain moment in time.
Tips to prevent measurement problems:
1. Do not connect VEConfigure while the Cerbo GX is connected
2. VE.Bus is not a 100% plug and play system: if you disconnect the Cerbo GX from one Multi, and very quickly connect it to
another, it can result it wrong values. To make sure that this is not the case, use the 'redetect system' option in the Multi/
Quattro menu on the Cerbo GX .
15.7. Q7: There is a menu entry named "Multi" instead of the VE.Bus product
name
A VE.Bus system can be completely turned off, including its communication. If you turn a VE.Bus system off, and thereafter reset
the Cerbo GX, the Cerbo GX cannot obtain the detailed product name and shows “Multi” instead.
To get the proper name again, go into the Multi menu on the Cerbo GX and set the Switch menu entry to On or in case a Digital
Multi Control is present, set the physical switch to On. Note that when there is a BMS, above procedure only works when within
battery working voltages.
15.8. Q8: There is a menu entry named "Multi", while there is no Inverter, Multi
or Quattro connected
If a Cerbo GX ever saw a VE.Bus BMS or Digital Multi Control (DMC), it will remember them, until 'Redetect system' is started
from the Cerbo GX menu.After a minute, restart the Cerbo GX: Settings → General → Reboot.
15.9. Q9: When I type the ip-address of the Cerbo GX into my browser, I see a
web page mentioning Hiawatha?
Our plan is to at least run a website where you can change settings and see the current status. If all works out as we would like
to, there might come be a fully functional version of the online VRM Portal running locally on the Cerbo GX. This allows people
without an internet connection, or an intermittent internet connection to have the same features and functionality.
15.10. Q10: I have multiple Solar chargers MPPT 150/70 running in parallel. From
which one will I see the relay status in the Cerbo GX menu?
From a random one.
Cerbo GX Manual
Page 71 FAQ