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Application Note – S0 Meter Cable Adapter Setup
Version History
Version 1.2, September 2020
S0 meter connection options
Added SetApp configuration support
Added Monitoring functionality
Removed export limitation support
Contents
S0 Meter Cable Adapter Setup................................................................................................................................... 2
Introduction ............................................................................................................................................................................ 2
Connecting an S0 Meter to a Single Inverter System ............................................................................................................. 3
Connecting an S0 Meter to a Multiple Inverter System ......................................................................................................... 3
S0 Meter Installation ............................................................................................................................................................... 4
S0 Meter Configuration ........................................................................................................................................................... 5
Monitoring Data ...................................................................................................................................................................... 6
S0 Meter Cable Adapter Setup
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NOTE
Meters with S0 interfaces are relevant in the EU only.
NOTE
When installing an S0 meter at the grid connection point (this location is supported by inverters with a display only),
make sure that it counts the total positive energy, that is, the energy exported to the grid.
NOTE
S0 meters do not support export limitation functionality.
S0 Meter Cable Adapter Setup
Introduction
Meters with an S0 interface transmit energy measurements with pulses, using a dry contact relay. The pulses are then
counted and represented as kWh values.
The precision of the S0 interface may be lower than that of the RS485 interface, and as a result, their resolution and
response time is undetermined. Also, in the event of a communication problem with the S0 meter, the total count will
be lost.
S0 meters are not provided by SolarEdge. SolarEdge supports S0 meters that comply with the EN 62053-31 standard; this
standard defines pulse duration (T_on) between 30mS and 120mS.
S0 Meter Cable Adapter Setup
Connecting an S0 Meter to a Single Inverter System
When connecting an S0 interface meter in a single inverter system, the meter is connected to the inverter via an S0
meter adapter cable (available from SolarEdge).
Connecting an S0 Meter to a Multiple Inverter System
When connecting an S0 interface meter in a multiple inverter system, the meter is connected to the inverter that serves
as the Smart Energy Manager (or a Commercial Gateway) via an S0 meter adapter cable (available from SolarEdge).
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The S0 meter adapter cable has an 8-pin connector on one end, which connects to the inverter/CCG, and a 2-pin
connector at the other end, which connects to a cable from the meter. The cable requirements are as follows:
Minimum 2 wires (twisted pair). A CAT5 cable can be used.
Wire cross section area: 0.2- 1 mm² / 24-18 AWG
Cable outer diameter range: 2-4 mm / 0.08-0.16"
Maximum length: 50 m / 164 ft
S0 Meter Cable Adapter Setup
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1. Open the inverter cover as described in its manual.
2. Remove the seal from one of the openings in communication gland #2 at the
bottom of the inverter and insert the wires from the meter through the
opening.
3. Connect the wires from the meter cable to the 2-pin connector of the S0
adapter cable: Connect the Minus (-) wire to the S- pin and the Plus (+) to the
S+ pin.
4. Check the S0 adapter cable connections for loose wires, and that S0+ and S0-
are not crossed.
5. For inverters with a display: Connect the 8-pin connector of the S0 cable to
the Power Reduction Interface connector on the inverter communication
board.
6. For inverters using SetApp: Connect the 8-pin connector of the S0 cable to
the Power Reduction Interface connector on the inverter communication
board. Insert the connector into the 8 leftmost sockets.
Power Reduction
Power Reduction Interface
S0 Meter Installation
To connect the AC power to the meter:
For detailed information on how to install the meter and connect the AC side refer to the meter installation manual.
To connect the meter to the inverter:
S0 Meter Cable Adapter Setup
S0 Meter Configuration
NOTE
Configuration of a SetApp inverter for S0 meter use is supported from version 4.10.16.
E x p o r t
C o n s u m p t i o n
I m p o r t
N o n e
Configuring the Inverter for S0 Meter Support using SetApp
To configure the inverter for S0 meter support using SetApp:
1. From the Commissioning page, select Site Communication GPIO Device Type S0 meter to enable the S0 meter.
2. From the Commissioning page, select Site Communication GPIO S0 meter to access the S0 Meter page.
3. On the S0 Meter page, set the following parameters:
S0 Function: Consumption
S0 Configuration: set the number of pulses per KWh (default value is 1000)
To disable inverter support for the S0 meter using SetApp:
1. From the Commissioning page, select Site Communication GPIO Device Type, and select a device
other than
S0 Meter.
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Configuring the Inverter for S0 Meter Support using the Device Display
To configure the inverter for S0 meter support using the device display:
1. Enter Setup mode, and select Communication GPIO Conf S0 meter to configure GPIO to work with the S0 meter.
2. Select Device Type S0 meter S0 conf Meter Func, and select either Export or Consumption according to the actual meter
location/measurement:
Export: The meter is installed at the grid connection point and reads the energy fed into the grid
Consumption: The meter is installed at the load consumption point and reads the energy consumed by the site
Import: The meter is installed at the grid connection point and reads the energy purchased from the grid
None: No reading
The selected option is displayed in the S0 Conf screen as either <Feed>, <Cons>, <Prcs>, or <None>.
5. Select Device Type S0 meter S0 conf PLS per kWh, and enter a value between 250 and 10000 for the number of pulses per
kWh reading, according to the installed meter’s specification.
6. Exit the Setup mode.
S0 Meter Cable Adapter Setup
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Data
Displayed in
Monitoring Dashboard
Displayed in
Monitoring Charts
Production (inverter/site)
Consumption
X
X
Self-consumption
X
X
Export
X
X
Import
X
X
Data
Displayed in
Monitoring Dashboard
Displayed in
Monitoring Charts
Production(inverter/site)
Consumption
X X Self-consumption
(calculated)
(calculated)
Export
X Import
X
X
Data
Displayed in
Monitoring Dashboard
Displayed in
Monitoring Charts
Production (inverter/site)
Consumption
Self-consumption
(calculated)
(calculated)
Export
X
(calculated)
Import
X
X
Monitoring Data
If your device is connected to the SolarEdge server, you can view the S0 meter’s readings in the monitoring platform.
The data from the inverters and from installed meters is displayed in the Dashboard and Charts tabs of the monitoring
platform. The displayed data depends on the meter(s) location: grid connection point (export), or load consumption
point (consumption). The following tables detail the displayed information per meter location.
No meter installed:
Export meter:
Consumption meter:
S0 Meter Cable Adapter Setup
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