Selection And Operation Of Frequency Converters - BOCK HGX24e CO2 LT Series Assembly Instructions Manual

3 | Areas of application

3.4 Selection and operation of frequency converters

For the approved frequency range of the compressor, see chapter 3.3, operating limits.
The maximum current of the compressor (Imax) (see name plate or technical data) must not be ex-
ceeded. If abnormal vibrations occur in the system, the affected frequency ranges must be blanked
out accordingly in the frequency converter.
The maximum output current of the frequency converter must be greater than the maximum cur-
rent of the compressor. (I max) of the compressor.
For a safe start of the compressor, the frequency converter must be able to apply a short-term
overload of min. 160 % of the maximum current (Imax) of the compressor for min. 3 seconds.
Carry out all designs and installations according to the local safety regulations and common rules
(e.g. VDE) and regulations as well as according to the specifications of the frequency converter
manufacturer.
D
GB
F
E
9