The internal relay can be used to automatically start and stop a generator. With this functionality you can set conditions to make the relay open or close.
Wire the relay to a genset in such matter that the genset will start as soon as the relay is closed. Then it needs to keep running until the relay is opened again.
On Venus GX there are two relays available, only Relay 1 is used by the generator auto/start stop functionality.
Besides driving the internal relay, the auto start/stop functionality can be also enabled to directly control supported Fischer Panda generators. For more information on how to connect Fischer Panda generators, see CCGX & Fischer Panda generators.
Go to: Setttings → Relay and set function to “Generator start/stop”
Once enabled, all settings will become available in Settings → Generator start and stop.
Once the mode is set, all settings will become available under the Auto start/stop menu entry at the bottom of the page.
* Battery monitor: Select which battery monitor will be used for DC related conditions.
* On loss of communication: Defines the behavior when the datalink between the CCGX/Venus GX and the selected battery monitor and/or vebus inverter/charger is lost. Options are:
* Do not run genset when AC 1 is in use: It is intended for backup systems, with a Quattro, having mains on AC in 1, and Genset on AC in 2. When this option is enabled, the Genset will only be started after a mains failure. And in case of a mains failure, the Genset will automatically be stopped again as soon as the mains is restored. This functionality is not available for VE.Can connected Quattros.
The following conditions are available to auto start/stop a generator:
* The measured value is the system total AC consumption.
Conditions are evaluated in the order shown above and when multiple conditions are reached only the top one will be shown as active condition. All enabled conditions are evaluated even if the generator is already started so when the active conditions ends, the next reached condition will keep the generator running.
* Higher/lower value depends on the type of condition.
AC load condition works like the rest of conditions but has the “Measurement” extra setting.
The “Measurement” setting is available on firmware v2.0 and onwards and has three possible values:
Allows you to program a periodical test run.
Use the manual start to directly start the generator. If the generator is already running you can use this option to make sure that the generator won't stop automatically when the active condition becomes inactive.
There are two ways to start the generator manually:
WARNING: If the generator is manually started without a stop timer, won't stop until the user set to off the manual start option.
In both options the use of a stop timer is available, use the timer to program the generator stop.
Manually stop the generator is only possible if no other condition is active. In the case that you want to force the stop you should disable the active condition or disable the generator start and stop function.
Quiet hours allows you to set a time zone for nighttime with values that make the generator start only when is really necessary.
When the “Quiet hours” mode is active, the conditions will use the related start/stop values.
To enable it go to the settings menu and set the “Enable quiet hours” switch on. Once enabled start and end time settings will become visible.
You can make the “Quiet hours” mode to be permanently active(when enabled) setting both start and stop time to the same value.
Besides the main purpose of the “Quiet hours” mode you can also use it to define two time zones over the day.
Examples of the use of different time zones:
Enable the “AutoStart” function in the Fischer Panda control panel.
Make sure that the issue is solved and clear the error to make the auto start/stop function work again.