Nidec Embraco CF01F - Page 27

Input frequency signal [Hz]
FMS compressor speed [rpm]
0 to 40
0
40 to 42,8
1800
42,8 to 150
42 x Hz
≥150
6300
Table 14 – Legacy FMS Compressors speed versus Frequency control signal
(2)
Note 1 – Frequency control curve for new SKUs of inverters for FMS compressors (software PN: FST).
Note 2 – Frequency control curve for Legacy SKUs of inverters for FMS compressors (software PN: FQ0).
Figure 17 – Examples of Compressor speed versus Frequency control signal
The frequency control option may have up to 1% error in the frequency reading by the
Inverter. When determining the thermostat software, it is recommended to consider this
Inverter variation, as well as the possible error in the frequency signal generated by the
thermostat.
Figure 18 shows an example of an input frequency signal of 125 Hz sent to the Inverter.
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