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Maintenance/Troubleshooting
Fault
Cause of fault
Noise emission
Particular ambient con-
from the inverter.
ditions.
In spite of high
The device is too hot
radiation levels,
and the system limits
the inverter does
the power.
not feed the
maximum power
into the grid.
Table 4:
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
defi ned 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.
Page 42
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 radia-
tion, a light hum may be audible due to the increased power.
•
Under certain grid conditions, resonances may form
between the unit's input fi lter and the grid, which may be
audible even when the inverter is switched off .
These noise emissions do not aff ect the operation of the
inverter. They do not lead to loss of effi ciency, 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 fi ns.
Provide for suffi cient cooling of the unit.
Do not cover the cooling fi ns.
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 coun-
try-specifi c time period.
Installation Instructions KACO
By
B, E
blueplanet
32.0 TL3 / 40.0 TL3 / 50.0 TL3
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