NXS Form 63-2600, Users Manual, Technical Data - CONTROL ...

Honeywell Description of Parameters 169
1 The frequency drive is able to start into a running motor by applying a small
torque to motor and searching for the frequency corresponding to the speed
the motor is running at. Searching starts from the maximum frequency towards
the actual frequency until the correct value is detected. Thereafter, the output
frequency will be increased/decreased to the set reference value according to
the set acceleration/deceleration parameters.
Use this mode if the motor is coasting when the start command is given. With
the flying start it is possible to ride through short mains voltage interruptions.
506 Stop function (2.4.7)
Coasting:
0 The motor coasts to a halt without any control from the frequency drive, 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 drive.
Normal stop: Coasting/ Run Enable stop: ramping
3 The motor coasts to a halt without any control from the frequency drive.
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 234567 (2.4.8)
Defines the current injected into the motor during DC-braking.
508 DC-braking time at stop 234567 (2.4.9)
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
ID506.
0 DC-brake is not used
>0 DC-brake is in use and its function depends on the Stop function,
(param. ID506). 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
drive.
With DC-injection, the motor can be electrically stopped in the shortest possible time,
without using an optional external braking resistor.
Automation and Control Solutions
Honeywell
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MIN 55422 Scarborough, Ontario 63-2600-1
MIV 4Z9
www.honeywell.com