Control Techniques Epsilon EP-P, Reference Manual

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Epsilon EP-P Drive Reference Manual
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www.controltechniques.com Revision: A4
Figure 45: Velocity View
3.10.1 Settings Group
FeedRate Override
This parameter is used to scale all motion. It can be described as scaling in real time. The default setting of 100% will allow all motion to occur
in real time. A setting of 50% will scale time so that all moves run half as fast as they do at 100%. A setting of 200% will scale time so that all
moves run twice as fast as they would at 100%. FeedRate Override is always active and affects all motion, including accels, decels, dwells,
and synchronized motion. This parameter may be modified via Modbus or in a program.
FeedRate Decel/Accel
The FeedRate Decel/Accel parameter specifies the ramp used when velocity changes due to a change in the FeedRate Override value. The
units of FeedRate Decel/Accel are Seconds/100% of FeedRate. Therefore, the user must specify the amount of time (in seconds) to accelerate
or decelerate 100% of FeedRate.
Example:
Feedrate Override is set to 100% (default). The user wishes to slow down motion to 50% of programmed velocity. If FeedRate Decel/Accel
is set to 1 Sec/100%, when the FeedRate Override parameter is changed to 50%, it will take 0.5 seconds to decelerate to 50% velocity.
Decel/Accel Time = FeedRate Decel/Accel * % Change in FeedRate
= (1 Sec/100%) * (100% - 50%)
= 0.5 Seconds