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Revision 8.6
SECTION 3 : TRAVEL PARAMETERS
46
3.4.16.
Notch 1; 2 and 3 Acceleration Time
NO
PARAMETER
DESCRIPTION
SCALE
INCREMENT
DEFAULT
16
N123 Accel
Acceleration time
between slow speed
notches
5 sec to 20 sec
1 sec
5 sec
This parameter sets the acceleration time between speed notches and is only applicable for slow
speed notches1, 2 and 3. When Notch 4 is required this ramp is bypassed.
Scale example:
A value of 5 indicates that the ramp is spanned from 0 to 5 seconds from 0% speed to 100% speed.
10% speed is then reached in 0.5 second. 30% speed is then reached in 1.5 second, providing that
other external elements (such as load swing) don’t interfere with the torque requirements to achieve
this target rate of acceleration.
3.4.17.
Notch 4_Acceleration Profile
NO
PARAMETER
DESCRIPTION
SCALE
INCREMENT
DEFAULT
17
N4 Accel
Acceleration rate for
full speed acceleration
2 to 20 sec
1
5
Notch 4 acceleration profile is based on ramping the motor stator voltage as opposed to Notches
1, 2 and 3 acceleration profile which is based on a Speed ramp profile.
The system, when going to Notch 4, measures the voltage applied to the motor at the time and ramps
it to full voltage at the rate determined by this parameter.
Example:
During transition from any notch to notch 4 the voltage supplied to the motor was at 50%.
The parameter is set at 5 sec.
It will take a further 2.5 sec to ramp the voltage from 50% to 100%.
3.4.18.
Phase Shifter Off Time
NO
PARAMETER
DESCRIPTION
SCALE
INCREMENT
DEFAULT
18
Ph Shift Off Tim
Phase shifter off time delay
60 to 240
ms
20 ms
100 ms
This parameter sets the time that the Phase Shifter is disabled (No current flowing to the motor) to
allow the directional contactors to change over without arcing. Refer to similar parameter for Hoist
application for further details.
