Drive Control - Honeywell NXL Series Applications Manual

Honeywell

4.5 Drive Control

2.4.1 Acceleration/Deceleration ramp 1 shape
The start and end of the acceleration and deceleration ramp can be smoothed with this
parameter. Setting value 0 gives a linear ramp shape which causes acceleration and
deceleration to act immediately to the changes in the reference signal.
Setting value 0.1...10 seconds for this parameter produces an S-shaped
acceleration/deceleration. The acceleration time is determined with parameters 2.1.3/2.1.4
2.4.2 Brake chopper
Note! An internal brake chopper is installed in all other sizes but MF2
0 No brake chopper used
1 Brake chopper used in Run state
3 Used in Run and Stop state
When the frequency converter is decelerating the motor, the inertia of the motor and the load
are fed into an external brake resistor. This enables the frequency converter to decelerate the
load with a torque equal to that of acceleration (provided that the correct brake resistor has
been selected). See separate Brake resistor installation manual.
2.4.3 DC-braking current
Defines the current injected into the motor during DC-braking.
Description of parameters
Figure 1- 10. Acceleration/Deceleration (S-shaped)
[Hz]
2.1.3, 2.1.4
2.4.1
2.4.1
[t]
NX12K20
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