Derating Values In Overload Condition; Derating Values For Switching Frequency; Kalt: Ambient Temperature Reduction Factor - gefran installationSIEIDrive ADL300 Quick Start Up Manual, Specification And Installation

4.5.1 Derating values in overload condition

In overload conditions the output current depends on the output frequency, as shown in the figure below.
Figure 4.5.1-A: Ratio between overload/output frequency (ADL300-...-4 - ADL300-...-2T)
Sizes 1...3 (4...22kW)
OL (% I )
N
200
150
Figure 4.5.1-B: Ratio between overload/output frequency (ADL300-...-2M)

4.5.2 Derating values for switching frequency

The switching frequency is modified according to the temperature of the drive (measured on the heat sink), as shown in
the figure below.
Figure 4.5.2: Ratio between switching frequency/heat sink temperature
F
SW

4.5.3 Kalt: Ambient temperature reduction factor

K
T
1.00
0.95
ADL300 • Quick installation guide - Specifications and connection
F out (Hz)
3
OL (% I )
N
200
150
(kHz)
10
5
Figure 4.5.3: Tamb reduction coefficient
-10 45 50
Sizes 4-5 (30...75kW)
OL (% I )
N
180
150
F out (Hz)
3
T diss th
T amb (°C)
F out (Hz)
3
T diss (°C)
Function not allowed
Range of ambient temperatures allowed
19