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

172 Description of Parameters Honeywell
518 Acceleration/deceleration ramp speed scaling ratio
between prohibit frequency limits 23457 (2.5.3, 2.5.7)
Defines the acceleration/deceleration time when the output frequency is between the
selected prohibit frequency range limits (parameters ID509 and ID510). The ramping
speed (selected acceleration/ deceleration time 1 or 2) is multiplied with this factor. E.g.
value 0.1 makes the acceleration time 10 times shorter than outside the prohibit
frequency range limits.
fout [Hz]
Par. ID518 = 0,2
Par. ID510
(ID512; ID514)
Par. ID509
(ID511; ID513)
Par. ID518 = 1,2
NX12k81
Time [s]
Figure 8-46. Ramp speed scaling between prohibit frequencies
519 Flux braking current 234567 (2.4.13)
Defines the flux braking current value. The value setting range depends on the used
application.
520 Flux brake 234567 (2.4.12)
Instead of DC braking, flux braking is a useful way to raise the braking capacity in cases
where additional brake resistors are not needed.
When braking is needed, the frequency is reduced and the flux in the motor is increased,
which in turn increases the motor's capability to brake. Unlike DC braking, the motor
speed remains controlled during braking.
The flux braking can be set ON or OFF.
0 = Flux braking OFF
1 = Flux braking ON
Note: Flux braking converts the energy into heat at the motor, and should be used
intermittently to avoid motor damage.
521 Motor control mode 2 6 (2.6.12)
With this parameter you can set another motor control mode. Which mode is used is
determined with parameter ID164.
For the selections, see parameter ID600.
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