Lenze i700 User Manual

Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06 166
5 Motor control & motor settings
5.18 Frequency and speed limitations
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5.18 Frequency and speed limitations
Output frequency
The output frequency of the i700 servo inverter is limited to a maximum value whose amount
corresponds to the lower of the two following values:
By restricting the "Dual-Use Regulation" (EC 428/2009), values of + 599 Hz to + 1000 Hz or - 599 Hz
to - 1000 Hz do not cause an increase of the output frequency. Please observe the dead band that
occurs in this case.
Speed setpoint
If servo control is used, the speed setpoint is limited depending on the number of motor pole pairs:
• If the speed setpoint is limited, bit 1 ("Speed: Setpoint 1 limited") or bit 5 ("Speed: Setpoint 2
limited") is set in the Lenze status word (0x2831
or 0x3031 for axis B).
• The behaviour corresponds to the behaviour which is shown when the set maximum speed
(0x6080
or 0x6880 for axis B) is reached.
• The sequence is: Limit the speed to 0x6080
(or 0x6880 for axis B) first, then limit it to the speed
limit value n
lim
.
Frequency setpoint
If V/f characteristic control is used, the frequency setpoint is limited in addition to the speed
setpoint.
• If the frequency setpoint is limited, bit 10 ("Output frequency limited") is set in the Lenze status
word (0x2831
or 0x3031 for axis B).
 Note!
By limiting the maximum output frequency to ± 599 Hz, the devices are not subject to
the export restrictions of the "EC-Dual-Use Regulation" (EG 428/2009). This applies to
devices supplied from the middle of the year 2015.
For certain applications, the supply of devices with the current maximum output
frequency of ± 1999 Hz. If required, get in touch with your Lenze contact person.
f
lim
Maximum output frequency
f
chop
Switching frequency (0x2939 or 0x3139 for axis B)
f
max_device
Maximum device output frequency (0x2835:2 or 0x3035:2 for axis B,
depending on the device type ± 599 Hz or ± 1999 Hz)
n
lim
Speed limit value
f
lim
Maximum output frequency
zp Number of motor pole pairs
f
lim
f
chop
8
------------
= or f
lim
f
max_device
=
n
lim
f
lim
zp
-------- -
=

Lenze i700 Specifications

General

Control Type	Vector control, V/f control
Safety	STO (Safe Torque Off)
Protection Class	IP20
Frequency	50/60 Hz
Communication Interfaces	CANopen
Cooling	Air cooled
Protection Features	Overvoltage, Undervoltage
Ambient Temperature	-10°C to +45°C
Frequency Range	0 Hz to 300 Hz
Supply Voltage	3-phase AC