36 • vacon
Description of parameters
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506
Stop
function
(2.1.12)
Coasting:
0
The motor coasts to a halt without any control from the frequency converter, after
the Stop command.
Ramp:
1
After the Stop command, the speed of the motor is decelerated according to the set
deceleration parameters.
If the regenerated energy is high it may be necessary to use an external braking
resistor for faster deceleration.
Normal stop: Ramp/ Run Enable stop: coasting
2
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 frequency converter.
Normal stop: Coasting/ Run Enable stop: ramping
3
The motor coasts to a halt without any control from the frequency converter.
However, when Run Enable signal is selected, the speed of the motor is decelerated
according to the set deceleration parameters. If the regenerated energy is high it
may be necessary to use an external braking resistor for faster deceleration.
507
DC-braking
current
(2.4.3)
Defines the current injected into the motor during DC-braking.
508
DC-braking
time
at
stop
(2.4.4)
Determines if braking is ON or OFF and the braking time of the DC-brake when the motor is
stopping. The function of the DC-brake depends on the stop function, parameter
0
DC-brake
is
not
used
>0
DC-brake is in use and its function depends on the Stop function,
(param.
). The DC-braking time is determined with this parameter.
Par. ID506 = 0; Stop function = Coasting:
After the stop command, the motor coasts to a stop without control of the frequency converter.
With DC-injection, the motor can be electrically stopped in the shortest possible time, without
using an optional external braking 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 ID508
determines the braking time. When the frequency is 10% of the nominal, the braking time is
10% of the set value of parameter ID508.
