Description
19
GA03108_002_C1 - 04/2018 - © Leybold
U
f
U
N
U
min
f
min
f
N
I
max
Fig. 1.8 U/f profile
1.3.2 Limitations of use for frequency converter operation
When using a frequency converter, we recommend setting a U/f profile. For a
guide to settings please refer to the following table. The specified current
limits should not be exceeded even for a short time by ensuring suitable set-
tings in the frequency converter. Regardless of these current limits, the maxi-
mum pressure differentials listed in Section 1.3.3 must be observed.
Voltage range
~3 ∆ 200-265 V
~3 Y 400-480 V
Rated voltage U
N
265 V
460 V
Minimum voltage U
min
10 V
18 V
Rated frequency f
N
60 Hz
Minimum frequency f
min
0-5 Hz
I
max
WS(U) 251
5.5 A
3.2 A
WS(U) 501
10 A
5.8 A
WS(U) 1001
14.7 A
8.5 A
WS(U) 2001
26 A
15 A
