Vacon NX series Applications Manual

t [s]
f
out
[Hz]
Par. ID510
(ID512; ID514)
Par. ID509
(ID511; ID513)
Par. ID518=1.2
Par. ID518=0.2
Fig. 71: Ramp speed scaling between prohibit frequencies
519 FLUX BRAKING CURRENT 234567 (2.4.13)
Gives the current level for the flux braking. The value setting range depends on the used
application.
520 FLUX BRAKE 234567 (2.4.12)
As an alternative to DC braking, you can use flux braking. Flux braking increases the braking
capacity in conditions where additional brake resistors are not necessary.
When braking is necessary, the system decreases the frequency and increases the flux in the
motor. This increases the capacity of the motor to brake. The motor speed is controlled
during braking.
You can enable and disable Flux Braking.
Table 155: Selections for parameter ID520
Selection
number
Selection name Description
0 Flux braking OFF
1 Flux braking ON
CAUTION!
Use the braking only intermittently. Flux braking converts energy into heat and can
cause damage to the motor.
521 MOTOR CONTROL MODE 26 (2.6.12)
With this parameter you can set another motor control mode. Which mode is used is
determined with parameter ID164.
VACON · 308 PARAMETER DESCRIPTIONS
8
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Vacon NX series Specifications

General

Product type	AC Drive
Output voltage range	0-Uin
Frequency range	0-500 Hz
Enclosure classes	IP00, IP21
Mounting types	Wall
Braking chopper	Integrated or external
EMC filter	Built-in or external
Control modes	Scalar, Vector
Protection features	Overcurrent, overvoltage, undervoltage, overtemperature, short circuit
Communication options	Modbus, Profibus, CANopen, Ethernet
Ambient temperature range	-10°C to +50°C
Cooling method	Air-cooled