About Smart Meter and Power Limit Function
Q: How do I activate the output power limit function?
A: In an EM system, this function can be implemented as follows:
1. Ensure the Smart Meter is connected and communicating properly.
2. Turn on the export power limit function and set the max output power to grid in the app.
Note: Even if the output power limit is set to 0W, there may still be a deviation of max 100W when
exporting to the grid.
Q: Why is power still being exporting to the grid after I set the power limit to 0W?
A: The export limit can be 0W in theory, but this may deviate by around 50-100W in an EM system.
Q: Can I replace the Smart Meter supplied with the EM system with another brand of
meter or change some of the settings in the Smart Meter?
A: No. The inverter and Smart Meter use a dedicated communications protocol that is not
supported by other brands of meter. Additionally, manually changing the meter's settings could
cause communication failure.
Q: What is the maximum current allowed through the CT on the Smart Meter?
A: The max current for the CT is 120A.
Other Questions
Q: Is there a quick way to get the system working?
A: For the shortest setup, please refer to the "EM Quick Installation Instructions" and "PV Master
App Instruction".
Q: What kind of load can connect to the back-up side?
A: Please refer to section 2.4.3 On-Grid & Back-Up Connection: Declaration for Back-Up Overload
Protection
Q: Will the inverter's warranty of the inverter still be valid if, for some particular reason,
we cannot completely follow the instructions in the user manual for installation or
operation?
A: Normally we would still provide technical support for problems caused by failing to adhere to
the instructions in the user manual. However we cannot guarantee to provide replacements or
accept returns. Therefore, if there are particular reasons why you cannot fully comply with the
instructions, please contact the after-sales team for advice in the first instance.
4.3 Disclaimer
EM series inverters must be transported, installed and operated under specified environmental
and electrical conditions. The manufacturer has the right not to provide after-sales services or
assistance under the following conditions:
• The inverter is damaged during transportation.
• The inverter is outside its one-year warranty and an extended warranty was not purchased.
• The inverter has been installed, refitted or operated improperly, without the manufacturer's prior
consent.
• The inverter has been installed or operated under improper environmental or technical
conditions, as described in this user manual, without the manufacturer's prior consent.
• The requirements described in this manual were not adhered to during installation or configura-
tion of the inverter.
• The inverter has been installed or operated contrary to the requirements or warnings provided in
this user manual.
• The inverter is broken or damaged by any force majeure e.g., lightening, earthquake, fire hazard,
storm, or volcanic eruption.
• The inverter's hardware or software has been disassembled, modified or updated in any way
without the manufacturer's prior consent.
• The inverter has been installed or operated contrary to any relevant international or local policies
or regulations.
• Any non-compatible batteries, loads or other devices have been connected to the EM system.
Note:
The manufacturer retains the right to explain all the contents in this user manual. To insure IP65
rating compliance, inverter must be well sealed: Please install the inverter within one day of
unpacking; otherwise please seal all unused terminals/holes such that there is no risk of water or
dust ingress.
Maintenance
The inverter requires periodical maintenance. Details are provided below:
• Ensure the inverter is fully isolated from all DC and AC power for at least 5 minutes before starting
any maintenance work.
• Heat sink: Please use a clean towel to clean up the heat sink once a year.
• Torque: Please use a torque wrench to tighten AC and DC wiring connections once a year.
• DC breaker: Check the DC breaker regularly, and activate it 10 times in a row once a year.
• Operating the DC breaker will clean its contacts and extend its lifespan.
• Waterproof plate: Replace the waterproof plate of the RS485 connector and other parts once a
year.
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