Emerson Epsilon EP Drive 400518-01 Manual de instalación Pagina 60

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Epsilon EP-P Drive and FM-3/4 Module Reference Manual
Position Feedback
This is the feedback position of the motor in user units.
Following Error
The Following Error is the difference (in user units) between the Position Command and the Position Feedback. It is positive
when the Position Command is greater than the Position Feedback.
Encoder Position
The motor position in encoder counts since power up when the value was set to zero. This is a signed 32-bit value.
Velocity View
The Velocity View allows the setup of feedrate override details.
By selecting Velocity in the Hierarchy Tree, the Velocity View will appear on the right (see Figure 43).
Figure 43: Velocity View
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.
Examples:
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%)
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