14 ADP200 • Quick installation guide - Specifications and connection
4.5.1 Derating values in overload condition
In overload conditions the output current depends on the output frequency, as shown in the gure below.
Size
Tambient
[°C]
K1
[%OL]
K2
[Hz]
K3
[Hz]
Figure 4.5.1-A: Current derating curves according to the variation of the output frequency
2075 40 169 0,1 1,5
170%
200%
F out (Hz)
OL %
K2 K3
K1
100%
2110 40 199 0 0,1
3150 40 191 0 0,6
3185 40 200 0 0
3220 40 180 0 1,1
4300 40 176 0 2
4370 40 200 0 0
4450 40 189 0 0,9
5550 / 5S550 40 200 0 0
5750 / 5S750 40 200 0 0
K1, K2 and K3 are 3 values identifying current derating curves according to the variation of the output frequency.
These values depend on the temperature of the heatsink.
The values of K1, K2 and K3 shown in the table refer to the ambient temperature of 40 ° C, with constant switching
frequency of 4kHz and with drive used in continuous operation at nominal current plus fast and slow overload.
During operation at variable switching frequency, the drive automatically switches from working frequency of 8kHz to
4kHz, when the temperature of the heat sink exceeds the threshold T heatsink th (see Figure 4.5.2)
Note ! S Accessories (brake resistors, filters EMI and external AC input choke) are sized specifically for the injection molding machine application.
For other applications, refer to Gefran customer service.
Figure 4.5.1-B: Overload cycles
4.5.2 Derating values for switching frequency
ADP200 is factory set to 4kHz constant switching frequency (PAR 568 Switching freq mode = [0] Constant).
The gure 4.5.2 is valid only when PAR 568 Switching freq mode = [1] Variable, refer to ADV200 FP manual for more
details.
The switching frequency is modied according to the temperature of the drive (measured on the heat sink), as shown in
the gure below.
Figure 4.5.2: Ratio between switching frequency/heat sink temperature
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