Differences

This shows you the differences between two versions of the page.

--- energy-meters:et112 [2018-12-04 22:06] – [4. Multiple ET112 Meters in one system] robduthie
+++ energy-meters:et112 [2019-08-15 12:47] – replace venus-device with GX device guy_stewart
@@ Line 23: / Line 23: @@
 ===== 2. AC Wiring =====
+==== Configuration Options ====
 {{:energy-meters:schema_-_et112.png|}}
-Wiring when used as a grid meter.           Wiring when used to measure PV inverter or AC Genset.
+**Grid Meter** - Wiring when used as a grid meter.         **PV Inverter** -  Wiring when used to measure PV inverter or AC Genset.
+This configuration option of either Grid Meter, or PV Inverter is set in the [[venus-os:start|GX device]]. That selection will effect how the system should be wired, and how the information received from the meter is displayed on the screen.
+==== Example Diagram ====
+In this example configuration, a single ET112 is configured as a **Grid Meter** and will measure the grid import/export of an ESS system with a AC PV inverter. While the exact production of the AC PV inverter will not be seen, this is still a useful configuration as it allows the AC PV production to first flow to the non-essential loads on that same circuit.
+  * A surplus will be used to charge the batteries (seen as export and tried to reduce to grid set point eg 0).
+  * A deficiency will trigger a discharge of the batteries (seen as import, and tried to reduce to grid set point).
+This can be useful if the [[ess:start|Victron ESS system]] is installed as a retrofit to an existing AC Solar inverter installation with some larger loads that aren't wired through the Multiplus.
+If you wanted to see PV production separately you could use the "single phase dual function mode" of the [[energy-meters:et340|ET340]].
+{{:energy-meters:energy_meters_-_et112_-_2019-01-21.png?direct&800|}}
 ===== 3. Connection to CCGX ===
@@ Line 79: / Line 97: @@
 Connecting multiple ET112 meters to the same RS485-USB cable is not possible: the ET112 meter has no display and its Modbus address can therefor not be changed.
-Note 1 You can connect the ET112 in parallel, just need to change the MOD address to another number using the Configuration
+Note 1 You can connect the ET112 in parallel, just need to change the MOD address to another number using the Configuration software from the supplier which is free from Carlo Gavazzi Web site.
-software from the supplier which is free from Carlo Gavazzi Web site.
 ===== DISQUS =====
 ~~DISQUS~~