Lenze E82xVxxxKxxxxx - Manual (Page 259)

Function library
Operating mode
V/f characteristic control
10
l
259 EDS82EV903 EN 3.0
Typical values for C0015
400 V controller E82xVxxxK4C 230 V controller E82xVxxxK2C
Motor C0015 Motor C0015
Voltage Frequency Connection Voltage Frequency Connection
230/400 V 50 Hz
*
50 Hz 230/400 V 50 Hz F 50 Hz
220/380 V 50 Hz * 52.6 Hz 220/380 V 50 Hz F 52.3 Hz
280/480 V 60 Hz
*
50 Hz
400/690 V
400 V
50 Hz
50 Hz F 50 Hz
230/400 V
280/480 V
400 V
50 Hz
60 Hz
87 Hz F 87 Hz
220/380 V 50 Hz F 90.9 Hz
)
Note!
ƒ 4−pole asynchronous motors which are designed for a rated frequency of
50 Hz in star connection can be operated in delta connection up to 87 Hz
when being constantly excited.
– The motor current and the motor power are then increased by the factor
Ö3 = 1.73.
– The field−weakening range starts above 87 Hz.
ƒ Advantages:
– Higher speed−setting range
– 73 % higher power efficiency with standard motors.
ƒ Basically, this procedure can also be used for motors with other numbers of
poles.
– Observe mechanical limit speeds in case of two−pole asynchronous
motors.