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M a i nten ance /Trou bl es hoo ti ng
Fault
Cause of fault
Noise emission
Particular ambient
from the inverter.
conditions.
In spite of high
The device is too
radiation levels,
hot and the system
the inverter does
limits the power.
not feed the
maximum power
into the grid.
Table 5:
Troubleshooting
9.5
"Fault" messages on the display/LED
Many fault signals indicate a fault in the grid. They are not operational faults of the inverter. The triggering levels are
defined in standards, e.g. VDE0126-1-1. The inverter shuts down if the values exceed or fall below the approved levels.
9.5.1
Display of status and fault messages
Display
FS (fault status)
OS (operating status)
Details regarding the fault or operating status can be found either on the display or in the data that was recorded
through the RS485 interface.
Operating Instructions Powador 30.0-72.0 TL3_EN
Explanation/remedy
When there are certain ambient conditions, the units may emit
audible noises.
•
Grid interference or grid failure caused by particular loads
(motors, machines, etc.) which are either connected to
the same point on the grid or located in the vicinity of
the inverter.
•
In cases of volatile weather conditions (frequent switching
between sunny and cloudy conditions) or strong solar
radiation, a light hum may be audible due to the increased
power.
•
Under certain grid conditions, resonances may form
between the unit's input filter and the grid, which may be
audible even when the inverter is switched off.
These noise emissions do not affect the operation of
the inverter. They do not lead to loss of efficiency, failure,
damage or to a shortening of the unit's service life.
People with very sensitive hearing (particularly children) are
able to hear the high-frequency hum caused by the inverter's
operating frequency of approximately 17 kHz.
" No action
Because the temperatures inside the unit are too high,
the inverter reduces its power to prevent damage to the unit.
Note the technical data. Ensure that the convection cooling is
not impeded from the exterior. Do not cover the cooling fins.
" Ensure sufficient cooling of the unit.
" Do not cover the cooling fins.
Fault LED (red)
ON
OFF
•
Fault signal relay has switched.
•
Feed-in was ended due to a fault.
•
The fault signal relay releases again.
•
The inverter feeds back into the grid again after
a country-specific time period.
By
B, E
Page 47
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