•
•
Selec-
tion
number
Selection name
Description
If the regenerated energy is high, it can be necessary to use an external brake resistor to stop
within the set deceleration time.
2
Normal stop:
Ramp/ Run Ena-
ble stop: coast-
ing
After the Stop command, the speed of the motor is decelerated according to the set deceleration
parameters. However, when Run Enable is selected, the motor coasts to a halt without any control
from the AC drive.
3
Normal stop:
Coasting/ Run
Enable stop:
ramping
The motor coasts to a halt without any control from the AC drive. However, when Run Enable sig-
nal is selected, the speed of the motor is decelerated according to the set deceleration parame-
ters. If the regenerated energy is high, it can be necessary to use an external brake resistor for
faster deceleration.
10.243 (ID 507) DC-Braking Current
Location in the menu:
P2.4.8
(Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application)
Use this parameter to set the current that is fed into the motor during DC-braking.
DC brake in stop state only uses a tenth of this parameter value.
This parameter is used together with parameter
ID 516
to decrease the time before the motor is able to produce maximum torque
at start-up.
10.244 (ID 508) DC-Braking Time at Stop
Location in the menu:
P2.4.9
(Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application)
Use this parameter to set the braking is ON or OFF and to give the braking time when the motor stops.
The function of the DC brake depends on the stop function, parameter ID 506.
0 = DC brake is not used.
>0 = DC brake is in use and its function depends on the Stop function, (parameter ID 506). The DC-braking time is determined
with this parameter.
Parameter ID 506 = 0 (Stop Function = Coasting)
After the stop command, the motor coasts to a stop without control of the AC drive.
With DC-injection, the motor can be electrically stopped in the shortest possible time, without using an optional external brake
resistor.
The braking time is scaled according to the frequency when the DC-braking starts. If the frequency is ≥ the nominal frequency of the
motor, the set value of parameter
ID 508
determines the braking time. When the frequency is ≤10% of the nominal, the braking time
is 10% of the set value of parameter
ID 508
.
AB296635287482en-000301 / DPD00903 | 233
Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide
Summary of Contents for VACON NX
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