Parker NX Series, Техническое руководство

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16 - PVD 3663_GB_NX_March 2017.Docx
3.1.4. Drive selection
Drive selection depends on its rated power and its mode selection which leads to the
maximal current duration.
Please refer to the drive technical documentation for any further
information and to select the best motor and drive association.
AC890 PARKER drive example:
The rated current provided by the AC890 drive depends on its rated power and its
mode selection. “Vector mode” is used for induction motors while “Servo mode” is used
for brushless AC motors. With NX motors the power is usually < 37 kW, the rated
current corresponds to 100 %.
Power of Drive AC890 [kW] < 37 kW
Mode Vector mode Servo mode
Overload capability [%] 150 % during 60 s 200 % during 4 s
Illustration:
0
5
10
15
20
25
0 500 1000 1500 2000 2500 3000 3500 4000
Speed [rpm]
To
rq
u
e
[N
m
]
100% permanent
200% during 4 s