Capacity Regulator (Accessories); Fan Motor; Selection And Operation Of Compressors With Frequency Converters - Danfoss BOCK HA44e Operating Manual

7 | Electrical connection
7.12 Capacity regulator (Accessories)
ATTENTION A fuse (max. 3xlB in accordance with IEC 60127-2-1) corresponding
7.13 Fan motor
The fan motor for cooling the compressor is already wired in the terminal box. The power supply as
well as triggering of the compressor contactor should be made in accordance with the basic circuit
diagram (in the terminal box). The fan motor is protected by an internal temperature monitor.
Electrical data: 230 V - 1 - 50/60 Hz, 140 W - 0,71 A, IP44
7.14 Selection and operation of compressors with frequency converters
For safe operation of the compressor, the frequency converter must be able to apply an overload of
at least 140% of the compressor's maximum current (I-max.) for at least 3 seconds.
When using frequency converters, the following things must also be observed:
1. The maximum permissible operating current of the compressor (I-max) (see type plate or technical
data) must not be exceeded.
2. If abnormal vibrations occur in the system, the affected frequency ranges in the frequency converter
must be blanked out accordingly.
3. The maximum output current of the frequency converter must be greater than the maximum
current of the compressor (I-max).
4. Carry out all designs and installations in accordance with the local safety regulations and common
rules (e.g. VDE) and regulations as well as in accordance with the specifications of the frequency
converter manufacturer
The permissible frequency range can be found in the technical data chapter 11.
Rotational speed
range
Start-up time
Switch-off time
© Danfoss | Climate Solutions | 2024.03
to the rated current must be placed in front of every magnetic
coil of the capacity regulator as short-circuit protection. The ra-
ted voltage of the fuse must be equal to or greater than the rated
voltage of the magnetic coil. The ability of the fuses to switch off
must be greater than or equal to the maximum assumable short-
circuit current at the installation location.
Capacity regulator DCR14 is not approved for digital capacity
regulation for LG compressors.
0 - f-min
< 1 s
f-min - f-max
ca. 4 s
immediately
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