D-114 Programming 590 Series DC Digital Drive
SRAMP
Parameter Tag Range
ACCEL 1 JERK 2 612 0.00 to 100.00 %
Refer to ACCEL 0 JERK 2.
DECEL 1 JERK 1 597 0.00 to 100.00 %
Refer to DECEL 0 JERK 1.
DECEL 1 JERK 2 614 0.00 to 100.00 %
Refer to DECEL 0 JERK 2.
SRAMP OUTPUT 589
⎯ .xx %
Diagnostic, ramp output.
ACCEL OUTPUT 588
⎯ .xx %
Acceleration diagnostic.
AT SPEED 587 FALSE / TRUE
Diagnostic output indicating the Abs (input - output) is less than AT SPEED LEVEL.
Useful Equations
NOTE These only hold true if Jerk = Jerk2 for acceleration or Jerk 3 = Jerk 4 for deceleration.
V is the maximum speed the drive must reach.
In % / sec
A is the maximum allowable acceleration in %/sec
2
J is the maximum allowable value for jerk, in %/sec
3
The time needed to stop or accelerate is:
t
V
=+[Seconds]
as the speed is symmetrical the average speed is
V/2, therefore the stopping / acceleration distance
can be calculated.
s
VV
A
A
J
=+
⎛
⎝
⎜
⎞
⎠
⎟
2
[Meters]
Example acceleration graph for a velocity 60 %/s maximum Acceleration
of 20 %/s
2
and a jerk of 10 %/s
3
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