Lenze i950

13.10 Frequency and speed limitaons
By
liming the maximum output frequency to ± 599 Hz, the devices are not sub-
ject to the export restricons of the "EC-Dual-Use Regulaon" (EC 428/2009).
This applies to devices supplied from the middle of the year 2015. For certain
applicaons, the supply of devices with the current maximum output frequency
of ± 1999 Hz. If required, get in touch with your Lenze contact person.
Output frequency
The output frequency of the i700 servo inverter is limited to a maximum value, the amount of
which corresponds to the lower of the two following values:
chop
lim lim max_Geräte
f
f oder f f
8
= =
lim
f Maximum output frequency
f
chop
Switching frequency 0x2939
f
max_device
Maximum device output frequency 0x2835:001, depending on the device type ± 599
Hz or ± 1999 Hz
Due to the restricons by the "dual use regulaon" (EC 428/2009), values higher than + 599
Hz to + 1000 Hz or - 599 Hz to - 1000 Hz do not increase the output frequency. Please observe
the deadband occurring in this case.
Speed setpoint
If servo control is used, the speed setpoint is limited depending on the number of motor pole
pairs:
lim
lim
f
n
zp
=
n
lim
Speed limit value
f
lim
Maximum output frequency0x2939
zp Number of motor pole pairs
•
If the speed se
tpoint is limited, bit 1 ("Speed: Setpoint 1 limited") or bit 5 ("Speed: Set-
point 2 limited") is set in the Lenze status word 0x2831.
•
The behaviour corresponds to the behaviour which is shown when the set maximum
speed 0x6080 is reached.
•
The sequence is: limit the speed to 0x6080 rst, then limit it to the speed limit value n
lim
.
Frequency setpoint
If V/f characterisc control is used, the frequency setpoint is limited in addion to the speed
se
tpoint.
•
If the fr
equency setpoint is limited, bit 10 ("Output frequency limited") is set in the Lenze
status word 0x2831.
Conguring the motor control
Fr
equency and speed limitaons
300