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

168 Description of Parameters Honeywell
500 Acceleration/Deceleration ramp 1 shape 234567 (2.4.1)
501 Acceleration/Deceleration ramp 2 shape 234567 (2.4.2)
The start and end of acceleration and deceleration ramps can be smoothed with these
parameters. 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
ID103/ID104 (ID502/ID503).
[Hz]
ID103, ID104
(ID502, ID503)
ID500 (ID501)
ID500 (ID501)
[t]
Figure 8-42. Acceleration/Deceleration (S-shaped)
502 Acceleration time 2 234567 (2.4.3)
503 Deceleration time 2 234567 (2.4.4)
These values correspond to the time required for the output frequency to accelerate from
the zero frequency to the set maximum frequency (par. ID102). These parameters give
the possibility to set two different acceleration/deceleration time sets for one application.
The active set can be selected with the programmable signal DIN3 (par. ID301).
504 Brake chopper 234567 (2.4.5)
0 = No brake chopper used
1 = Brake chopper in use and tested when running. Can be tested also in READY
state
2 = External brake chopper (no testing)
3 = Used and tested in READY state and when running
4 = Used when running (no testing)
When the frequency drive is decelerating the motor, the inertia of the motor and the load
are fed into an external brake resistor. This enables the frequency drive 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.
505 Start function (2.4.6)
Ramp:
0 The frequency drive starts from 0 Hz and accelerates to the set reference
frequency within the set acceleration time. (Load inertia or starting friction may
cause prolonged acceleration times).
Flying start:
NX12K20
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