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Application with Energy Meter
With Modbus card II and energy meter, hybrid inverter can be easily integrated into
the existing household system. For details please refer to Modbus card II manual.
Note: this application is only valid for Grid-Tie with Backup II mode.
Equipped with Modbus card II, hybrid inverter is connected to energy meter with
RS485 communication port. It’s to arrange self-consumption via Modbus card to
control power generation and battery charging of the inverter.
Commissioning
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Step 1: Check the following requirements before commissioning:
Ensure the inverter is firmly secured
Check if the open circuit DC voltage of PV module meets requirement (Refer to
Section 6)
Check if the open circuit utility voltage of the utility is at approximately same to
the nominal expected value from local utility company.
Check if connection of AC cable to grid (utility) is correct if the utility is required.
Full connection to PV modules.
AC circuit breaker (only applied when the utility is required), batter circuit
breaker, and DC circuit breaker are installed correctly.
Step 2: Switch on the battery circuit breaker and then switch on PV DC breaker. After
that, if there is utility connection, please switch on the AC circuit breaker. At this
moment, the inverter is turned on already. However, there is no output generation
for loads. Then:
If LCD lights up to display the current inverter status, commissioning has been
successfully. After pressing “ON” button for 1 second when the utility is detected,
this inverter will start to supply power to the loads. If no utility exists, simply press
“ON” button for 3 seconds. Then, this inverter will start to supply power to the loads.
If a warning/fault indicator appears in LCD, an error has occurred to this inverter.
Please inform your installer.
Step 3: Please insert CD into your computer and install monitoring software in your
PC. Follow below steps to install software.
1. Follow the on-screen instructions to install the software.
2. When your computer restarts, the monitoring software will appear as shortcut
icon located in the system tray, near the clock.
NOTE: If using modbus card as communication interface, please install bundled
software. Check local dealer for the details.
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Figure 12.1
