Emerson Control Techniques FM-4 Reference Manual page 232

Programming module
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FM-4 Programming Module Reference Manual
Jog Deceleration - Is the average deceleration rate used when decelerating to zero speed or to the new target velocity.
Home Setup
Next, select the Home view from the Hierarchy Tree. Figure 159 shows the Home view and its associated home parameters.
Home Reference – Determines what signal is used as the home reference. The available options are an external sensor, the
encoder marker pulse, or both. If sensor is selected, the home profile will travel at its target velocity until the
Home.0.SensorTrigger is activated.
Velocity – Is the target velocity for the home move. The home move travels at this velocity, until the home reference is seen
and then stops. If the motor overshoots the sensor, a reverse move is initiated. Other functions may cause additional motion.
Acceleration – Is the average acceleration rate used to accelerate to the target velocity.
Figure 159:
Home Setup View
Deceleration - Is the average deceleration rate used to decelerate from the target velocity to zero velocity at the completion
of the home.
Home Offset – By selecting a specified offset, the ho m e will travel at a set velocity until the home reference signal is detected,
then travel an additional set distance, before coming to a stop. The deceleration ramp begins at the proper time, to ensure the
home completes precisely at the specified offset distance after the home reference was detected. In order to decelerate to a
stop immediately upon detecting the home reference, select the "Calculated Offset" radio box.
Limit Distance – Is the maximum incremental distance the home move will travel without seeing a home reference signal.
If the home move does travel this distance without seeing a home reference, it will come to a stop exactly at this point, and
the Home.0.LimitDistHit source will activate. If the box is left unchecked, the home move will continue without limit, until
a home reference is seen.
Index Setup
Next, setup any indexes required by your application. Select one of the indexes from the Hierarchy Tree. Figure 160 shows
Index0.
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