A.1 What this chapter contains
This chapter contains the technical specifications of the inverter, as well as provisions for
fulfilling the requirements for CE and other marks.
A.2 Ratings
A.2.1 Capacity
Inverter sizing is based on the rated motor current and power. To achieve the rated motor
power reference in the table, the rated current of the inverter must be higher than or equal to
the rated motor current. Also the rated power of the inverter must be higher than or equal to
the rated motor power. The power ratings are the same regardless of the supply voltage
within one voltage range.
Note:
1. The maximum allowed motor shaft power is limited to 1.5 · PN. If the limit is exceeded,
motor torque and current are automatically restricted. The function protects the input bridge
of the drive against overload.
2. The ratings apply at ambient temperature of 40 °C
3. It is important to check that in Common DC systems the power flowing through the
common DC connection does not exceed PN.
A.2.2 Derating
The load capacity decreases if the installation site ambient temperature exceeds 40 °C, the
altitude exceeds 1000 meters or the switching frequency is changed from 4 kHz to 8, 12 or
15 kHz.
A.2.2.1 Temperature derating
In the temperature range +40 °C…+50 °C, the rated output current is decreased by 3% for
every additional 1 °C. Refer to the below list for the actual derating.
A.2.2.2 Altitude derating
The device can output rated power if the installation site below 1000m. The output power
decreases if the altitude exceeds 1000 meters. Below is the detailed decreasing range of the
derating:
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