Danfoss VZH028, Инструкции по применению

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Single compressors
Electrical data, connections and wiring
If the temperature in the drive is too high, an
alarm 29 will be seen to trip the drive. When the
drive shows a warning 29, it’s suggested that
OEM controller has to be programmed based on the reading of the heatsink temperature received
from the drive to lower the load to avoid a trip-
lock. Contact Danfoss for more details.
The maximum allowable voltage imbalance
between each phase is 3%. Voltage imbalance
causes high amperage over one or several
phases, which in turn leads to overheating and
possible drive damage.
Mains imbalance function in CDS803 frequency
converter can be set to “[0] Trip” or “[1] Warning”
in 14.12 parameter. It is, by default, factory preset
to “[1] Warning”.
Then the compressor electrical motor is never
affected by main voltage imbalance situations
which are made completely transparent by the
frequency converter.
Temperature protection
Voltage imbalance
23
FRCC.PC.034.A2.02
Application Guidelines