SILLA PRISM SOLAR RFID, Инструкция по установке, использованию и техническому обслуживанию

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Problem : Balancing not working properly (3-phase Prism, no Powerwall)
Solution :
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Verify sensor reading in Dashboard
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is the read value of power imported from the grid 0kW even if there
are active loads?
■
Ensure that the sensors are positioned in the right place
(upstream of all loads)
■
Ensure that only the phase cable passes through the
sensor, not both phase and neutral cables
■
Check that all cables are correctly connected and not
interrupted or short-circuited (use a multimeter)
○
is the reading negative when there is energy import from the grid,
and vice versa?
■
reverse the sensor connections or reverse the direction of
the sensors
●
error "err_T" is displayed ?
○
check that the SEM Three module is powered (green LED ON)
○
check that the SEM Three module is communicating with the Prism
(red/green COM LED flashing every 2-5 seconds)
○
check that the RS485 connections are correct (A+, B-, GND)
○
ensure that the GND terminal is connected at both ends
○
ensure that the 120ohm resistor is installed on the SEM Three and
the "120" jumper is installed on the Prism.
○
measure the resistance between A+ and B-, check that it is approx.
60ohm
○
Check that all cables are correctly connected and not interrupted or
short-circuited (use a multimeter)
○
See Three-phase Prism Sensor Installation section for wiring
diagrams and details
●
the value read does not correspond to reality?
○
verify that the sensors correspond to the respective phase
○
verify that the sensors are mounted upstream of all loads in the
system
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Verify that balancing is enabled, and that the settings are entered correctly.
See section First configuration - Load balancing
Prism SOLAR rel. 2.2.2 - 37