Differences

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--- energy-meters:em24 [2017-01-11 14:00] – created mvader
+++ energy-meters:em24 [2019-01-22 10:16] – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 ===== 1. Introduction and usage =====
-This document is the manual for the three phase max 65 A per phase Energy Meter. As shown in the picture above.
+This document is the manual for the EM24 three phase max 65 A per phase Energy Meter. As shown in the picture above.
-https://www.victronenergy.com/accessories/wired-ac-sensor
+The Energy Meter can be used as a:
-The Energy Meter can be used for four things:
+  - Grid meter, and used as control input for an [[assistants:ess-assistant|ESS System]].
-  - Grid meter, and used as control input for an [[assistants:ess-assistant|ESS System]] (1).
   - Measure the output of a PV Inverter
   - Measure the output of a AC Genset
   - (deprecated) <del>Grid meter, used as control input for a [[system_integration:hub4_grid_parallel|Hub-4 system]]</del>
-(1) In case the meter is used as a grid meter in a single phase installation, it is possible to use the second phase to measure the output of a PV Inverter.
 The meter is connected to the Color Control GX. There are two options in its wiring:
@@ Line 22: / Line 18: @@
   - Direct connection, either using the RS485 to USB interface with 1.8m cable length, or the 5.0m cable.
   - Wireless connection via Zigbee
+If you are wondering which Energy Meter you should use, please read the [[energy-meters:start|Energy Meters Start]] page and [[https://www.victronenergy.com/accessories/wired-ac-sensor|Energy Meter Product page]].
 The REL200100000 is the EM24DINAV93XISX from Carlo Gavazzi. Other EM24 models from Carlo Gavazzi can also be used, as the communication is the same. For example the EM24DINAV53DISX, which uses Current Transformers and can therefore work in systems > 63A per phase, has been tested and works. Note that this model is not stocked by Victron Energy, we recommend to purchase it locally.
 ===== 2. AC Wiring and front selector =====
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 When used to measure a PV Inverter, terminals 1, 4 and 7 should face the PV inverter to ensure correct direction of current and power.
-=== single phase single function diagram: ===
+=== Single phase single function diagram: ===
 Note the jumper between terminals 1 and 4. You do not need this connection if you have the version AV2 of the sensor:
@@ Line 40: / Line 41: @@
 To measure a single phase PV inverter in a 3-phase system, connect all 3 phases to the grid phasing terminals (3, 6 and 9). Now you can chose on which phase you want the PV inverter by connecting the L1 line of the PV inverter to terminal 1, 4 or 7.
-=== single phase dual function diagram: ===
+=== Single phase dual function ===
-In this diagram, a single meter is used to both measure the grid and a single phase PV Inverter.
+If you wish to use a three phase meter in a single phase installation to measure the grid on one input and PV inverter output on another phase, use the ET340 instead. See [[energy-meters:start#faq|Energy Meters FAQ, Q5]] for more details.
-{{:power_meter_1phase+pv_dec2016.png?nolink&300}}
-On the CCGX go to the grid meter in the Wired AC sensor settings. Make sure 'Phase type' is set to 'Single phase' and 'PV inverter on phase 2' is enabled.
+If you understand the limitations of this meter in this configuration and wish to proceed anyway, see this diagram - {{ :power_meter_1phase_pv_dec2016.png?linkonly |}}
 === Front selector ===
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 ==== Option B: Wired connection to CCGX ====
-Connect the Energy Meter to the CCGX using the USB to RS485 cable. The RS485 to USB interface cable between the CCGX and the Energy Meter can be extended up to 100 meters.
+Connect the Energy Meter to the CCGX with an USB to RS485 cable (see our price list). The RS485 to USB interface cable between the CCGX and the Energy Meter can be extended up to 100 meters; make sure that the extensions of the Data+ (orange) and Data- (yellow) wires form a twisted pair.
 ^ RS485 Converter ^ Energy meter ^
@@ Line 91: / Line 89: @@
 {{system_integration:RS485_EM24.png?300}}
-===== 3. Configuration =====
+===== 4. Configuration =====
 After proper connection and powering up, the meter will be visible on the CCGX in the Settings -> Energy Meters menu:
@@ Line 104: / Line 102: @@
-==== 4. Multiple Energy Meters in one system ====
+===== 5. Multiple Energy Meters in one system =====
 There are 3 options to connect multiple Energy Meters:
     - Each wired to a separate RS485-USB converter. Which are then each plugged into a separate USB socket on the CCGX.
-    - Multiple Meters wired on to one RS485-USB converter. In this case the modbus address of the additional meters needs to be changed, so each is unique. See chapter 5.
+    - 2 meters wired on to one RS485-USB converter. In this case the modbus address of the additional meter needs to be changed, so each is unique. See chapter 6.
-    - Wireless connection: the additional Meters are each connected to additional Zigbee to RS485 converters. There is then no second Zigbee to USB interface required. It is necessary to change of the modbus address of one of the AC sensors, see chapter 5.
+    - Wireless connection: the additional meter is connected to an additional Zigbee to RS485 converters. There is then no second Zigbee to USB interface required. It is necessary to change of the modbus address of one of the AC sensors, see chapter 6.
 Besides adding an extra sensor, it is also possible, in a single phase installation, to use the, unused, second phase to measure the output of the PV Inverter. See see the AC Wiring chapter in this manual.
-==== 5. Changing the modbus address ====
+===== 6. Changing the modbus address =====
     - Press the joystick down until until the display shows 'Pass'. The joystick on the right side on the display, above the front selector).
     - Press the joystick down again and release immediately.
@@ Line 121: / Line 119: @@
     - Press right until 'End' appears.
     - Press down. The display now shows measurements again.
+Note that only one extra Energy meter can be added: the systems works only with address 1 (the default) and 2.
+==== Note on Operation ====
 ===== DISQUS =====
 ~~DISQUS~~