RAYSTECH RT5427 User Manual page 26

7. Commissioning
7.1 Commissioning Battery
If only one battery is installed, use the following steps to put it in operation:
1 Press the button on the upper side of the unit until the indicator lights on.
2 Make sure the Run light is on. If it stays off, do not use the battery and contact
customer service.
3 Turn on the inverter. Wait for the start-up sequence to complete fully.
If two or more batteries are connected in parallel, connect the power cables and
the communication cables first. Follow the steps as below:
1 Check battery voltage. If it is lower than 48V, charge the battery first. If more
assistance is needed, contact customer service.
2 Press the button on the upper side of the unit until the indicator lights on.
3 For all batteries, make sure that the Run light is on.
4 Make sure the maximum voltage difference between batteries is less than 1V. If not, balance
the battery voltage.
5 Turn on the inverter. Wait for the start-up sequence to complete fully.
7.2 Shutting Down Battery
Shut down the battery only when the battery is no charging or discharging which can be seen
in your phone with APP.
Press and hold the Panel Button for 5s, release after the whole lights are off.
8. Firmware Update
If you need to upgrade the BMS software version, please contact the after-sales staff :
service@raystechgroup.com.
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